Rhodopsins are photoreceptive membrane proteins containing 11-cis (animal rhodopsins) and all-trans (microbial rhodopsins) retinal chromophores. Animal rhodopsins act as G protein–coupled receptors, whereas microbial rhodopsins serve numerous roles and can act as light-driven ion pumps, photosensors, light-gated ion channels, and light-activated enzymes. Microbial rhodopsins play crucial roles in optogenetics. Isomerization is a shape-changing reaction that does not occur at low temperatures. In contrast, primary photo-intermediates are formed in rhodopsins even at 77 K. Therefore, the primary reactions in rhodopsins were debated in the 1970s, although isomerization was initially proposed. The ultrafast spectroscopy analysis of bovine rhodopsin containing an 11-cis-locked retinal chromophore revealed that the primary event in our vision is retinal photoisomerization. Moreover, molecular motions have been directly visualized by time-resolved x-ray crystallography. The unique ability of rhodopsins to undergo isomerization at 77 K was used to determine structural changes by low-temperature Fourier transform infrared spectroscopy, with detailed vibrational analysis providing structural information on animal and microbial rhodopsins, including protein-bound water. In contrast, unusual isomerization pathways (all-trans to 7-cis or 11-cis) and temperature effects (no reactions at <273 or <170 K) have been found for near-infrared light–absorbing microbial rhodopsins.
犀牛蛋白是一种感光膜蛋白，含有 11-顺式（动物犀牛蛋白）和全反式（微生物犀牛蛋白）视网膜发色团。动物的视黄素是 G 蛋白偶联受体，而微生物的视黄素则有多种作用，可以充当光驱动离子泵、光敏元件、光门控离子通道和光激活酶。微生物斜视素在光遗传学中发挥着至关重要的作用。异构化是一种改变形状的反应，在低温下不会发生。因此，尽管最初提出了异构化的观点，但在 20 世纪 70 年代，人们一直在争论犀牛蛋白中的主要反应。对含有 11-顺式锁定视网膜发色团的牛视黄素进行超快光谱分析后发现，我们视觉中的主要反应是视网膜光异构化。此外，分子运动还可通过时间分辨 X 射线晶体学直接观察到。通过低温傅立叶变换红外光谱分析，详细的振动分析提供了动物和微生物视网膜素的结构信息，包括与蛋白质结合的水。与此相反，在近红外光吸收微生物荷尔蒙蛋白中发现了不寻常的异构化途径（全反式到 7 顺式或 11 顺式）和温度效应（在小于 273 K 或小于 170 K 时没有反应）。
{"title":"Photoisomerization in rhodopsins: Shape-changing reactions of retinal at low temperatures","authors":"Hideki Kandori, Masahiro Sugiura, Kota Katayama","doi":"10.1063/5.0183056","DOIUrl":"https://doi.org/10.1063/5.0183056","url":null,"abstract":"Rhodopsins are photoreceptive membrane proteins containing 11-cis (animal rhodopsins) and all-trans (microbial rhodopsins) retinal chromophores. Animal rhodopsins act as G protein–coupled receptors, whereas microbial rhodopsins serve numerous roles and can act as light-driven ion pumps, photosensors, light-gated ion channels, and light-activated enzymes. Microbial rhodopsins play crucial roles in optogenetics. Isomerization is a shape-changing reaction that does not occur at low temperatures. In contrast, primary photo-intermediates are formed in rhodopsins even at 77 K. Therefore, the primary reactions in rhodopsins were debated in the 1970s, although isomerization was initially proposed. The ultrafast spectroscopy analysis of bovine rhodopsin containing an 11-cis-locked retinal chromophore revealed that the primary event in our vision is retinal photoisomerization. Moreover, molecular motions have been directly visualized by time-resolved x-ray crystallography. The unique ability of rhodopsins to undergo isomerization at 77 K was used to determine structural changes by low-temperature Fourier transform infrared spectroscopy, with detailed vibrational analysis providing structural information on animal and microbial rhodopsins, including protein-bound water. In contrast, unusual isomerization pathways (all-trans to 7-cis or 11-cis) and temperature effects (no reactions at <273 or <170 K) have been found for near-infrared light–absorbing microbial rhodopsins.","PeriodicalId":502275,"journal":{"name":"Chemical Physics Reviews","volume":"123 38","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141656712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The perfluoroaryl⋯aryl interaction, the most important subset of π-hole⋯π bonding, refers to the attractive stacking interaction between a perfluoroaryl group and an aryl group. In contrast to the aryl⋯aryl interaction with the same size, the much stronger perfluoroaryl⋯aryl interaction has its own characteristics and applications. A brief history of the development of the perfluoroaryl⋯aryl interaction was given first in this review, followed by an overview of the state-of-the-art of the nature of the perfluoroaryl⋯aryl interaction. Much attention was paid to the application of the perfluoroaryl⋯aryl interaction both in the traditional research fields such as crystal engineering and organic luminescent materials and in the hot research fields such as photovoltaics materials and biological engineering. It is believed that this timely and comprehensive review provides a foundation and guide for the future development and application of the perfluoroaryl⋯aryl interaction.
{"title":"Perfluoroaryl⋯aryl interaction: The most important subset of \u0000 π\u0000 -hole⋯\u0000 π\u0000 bonding","authors":"Weizhou Wang, Wen Xin Wu, Yu Zhang, Wei Jun Jin","doi":"10.1063/5.0205540","DOIUrl":"https://doi.org/10.1063/5.0205540","url":null,"abstract":"The perfluoroaryl⋯aryl interaction, the most important subset of π-hole⋯π bonding, refers to the attractive stacking interaction between a perfluoroaryl group and an aryl group. In contrast to the aryl⋯aryl interaction with the same size, the much stronger perfluoroaryl⋯aryl interaction has its own characteristics and applications. A brief history of the development of the perfluoroaryl⋯aryl interaction was given first in this review, followed by an overview of the state-of-the-art of the nature of the perfluoroaryl⋯aryl interaction. Much attention was paid to the application of the perfluoroaryl⋯aryl interaction both in the traditional research fields such as crystal engineering and organic luminescent materials and in the hot research fields such as photovoltaics materials and biological engineering. It is believed that this timely and comprehensive review provides a foundation and guide for the future development and application of the perfluoroaryl⋯aryl interaction.","PeriodicalId":502275,"journal":{"name":"Chemical Physics Reviews","volume":"18 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141664877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Advances in synthetic organic chemistry have facilitated the preparation and exploration of compounds exhibiting unusual bonding states. This review delves into carbon–carbon single bonds that are exceeding typical length of bonds, elucidating recent advances in understanding their bonding nature, properties, and chemical reactivity. Additionally, we examine factors contributing to the occurrence of such elongated bonds and their effects on other bonding parameters. Furthermore, we shift our focus toward the π-dimers of radical species, surpassing the limit of two-center two-electron (2c/2e) bonds, discussing their formation mechanisms, stability, and inherent properties. A key feature in the electronic structure of π-dimers is the bonding interaction of two unpaired electrons spanning multiple atoms, that is, multicenter two-electron (mc/2e) bonding. This review sheds light on the significant role played by extended carbon–carbon bonds (2c/2e bonds) and radical π-dimers (mc/2e bonding) in organic chemistry, providing valuable insight for future research on new functional materials.
{"title":"Long carbon–carbon bonds and beyond","authors":"Masaya Kishimoto, Takashi Kubo","doi":"10.1063/5.0214406","DOIUrl":"https://doi.org/10.1063/5.0214406","url":null,"abstract":"Advances in synthetic organic chemistry have facilitated the preparation and exploration of compounds exhibiting unusual bonding states. This review delves into carbon–carbon single bonds that are exceeding typical length of bonds, elucidating recent advances in understanding their bonding nature, properties, and chemical reactivity. Additionally, we examine factors contributing to the occurrence of such elongated bonds and their effects on other bonding parameters. Furthermore, we shift our focus toward the π-dimers of radical species, surpassing the limit of two-center two-electron (2c/2e) bonds, discussing their formation mechanisms, stability, and inherent properties. A key feature in the electronic structure of π-dimers is the bonding interaction of two unpaired electrons spanning multiple atoms, that is, multicenter two-electron (mc/2e) bonding. This review sheds light on the significant role played by extended carbon–carbon bonds (2c/2e bonds) and radical π-dimers (mc/2e bonding) in organic chemistry, providing valuable insight for future research on new functional materials.","PeriodicalId":502275,"journal":{"name":"Chemical Physics Reviews","volume":"7 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141714013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Solar photocatalytic water splitting for hydrogen production represents an ideal approach to address the current energy and environmental challenges, while also achieving “carbon peak and carbon neutrality” goals. The incorporation of photothermal effect into photocatalysis enables dual utilization of both light and heat energies, resulting in improved solar-to-hydrogen efficiency. In this review, we first discussed the behavior of energy flow and mass flow, and the characteristics of photogenerated carrier throughout the photocatalytic water splitting process, with particular focus on the behaviors induced by photothermal effect. Subsequently, we elaborate on strategies for designing high-efficiency photothermal catalytic systems and novel photothermal–photocatalytic integrated systems based upon concentrating-photothermal coupling effects. We then illustrate the development and large-scale demonstrations that utilize concentrated solar irradiation. Finally, we outline the challenges and highlight the future research directions of photothermal catalysis toward hydrogen production from water. This review aims to provide fundamental references and principal strategies for efficient utilization of solar energy in photothermal catalytic processes.
{"title":"Energy and mass flow in photocatalytic water splitting by coupling photothermal effect","authors":"Shujian Wang, Yitao Si, Kejian Lu, Feng Liu, Biao Wang, Shidong Zhao, Yi Wang, Shiyue Zhang, Youjun Lu, Naixu Li, Maochang Liu","doi":"10.1063/5.0202991","DOIUrl":"https://doi.org/10.1063/5.0202991","url":null,"abstract":"Solar photocatalytic water splitting for hydrogen production represents an ideal approach to address the current energy and environmental challenges, while also achieving “carbon peak and carbon neutrality” goals. The incorporation of photothermal effect into photocatalysis enables dual utilization of both light and heat energies, resulting in improved solar-to-hydrogen efficiency. In this review, we first discussed the behavior of energy flow and mass flow, and the characteristics of photogenerated carrier throughout the photocatalytic water splitting process, with particular focus on the behaviors induced by photothermal effect. Subsequently, we elaborate on strategies for designing high-efficiency photothermal catalytic systems and novel photothermal–photocatalytic integrated systems based upon concentrating-photothermal coupling effects. We then illustrate the development and large-scale demonstrations that utilize concentrated solar irradiation. Finally, we outline the challenges and highlight the future research directions of photothermal catalysis toward hydrogen production from water. This review aims to provide fundamental references and principal strategies for efficient utilization of solar energy in photothermal catalytic processes.","PeriodicalId":502275,"journal":{"name":"Chemical Physics Reviews","volume":"351 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141691747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Logan S. Lancaster, Taylor D. Krueger, Cheng Chen, E. N. Musa, Jacob M. Lessard, Nan-Chieh Chiu, Makenzie T. Nord, Kyriakos C. Stylianou, Chong Fang
Metal–organic frameworks (MOFs) have emerged as a highly tunable class of porous materials with wide-ranging applications from gas capture to photocatalysis. Developing these exciting properties to their fullest extent requires a thorough mechanistic understanding of the structure–function relationships. We implement an ultrafast spectroscopic toolset, femtosecond transient absorption and femtosecond stimulated Raman spectroscopy (FSRS), to elucidate the correlated electronic and vibrational dynamics of two isostructural 1,3,6,8-tetrakis(p-benzoic acid)pyrene (TBAPy)-based MOFs, which manifest drastically different photocatalytic behaviors. Systematic comparisons between the M3+-TBAPy MOFs and bare ligands in various environments reveal the unproductive dimer formation in Al-TBAPy, whereas Sc-TBAPy is dominated by a catalytically active charge-transfer (CT) process. Two ground-state FSRS marker bands of the TBAPy ligand at ∼1267 and 1617 cm−1 probe the chromophore environment at thermal equilibrium. For comparison, the excited-state FSRS of Sc-TBAPy suspended in neutral water unveils a key ∼300 fs twisting motion of the TBAPy peripheral phenyl groups toward planarity, promoting an efficient generation of CT species. This motion also exhibits high sensitivity to solvent environment, which can be a useful probe; we also showed the CT variation for ultrafast dynamics of Sc-TBAPy in the glyphosate aqueous solution. These new insights showcase the power of table-top tunable FSRS methodology to delineate structural dynamics of functional molecular systems in action, including MOFs and other photosensitive “nanomachines.” We expect the uncovered ligand motions (ultrafast planarization) to enable the targeted design of new MOFs with improved CT state characteristics (formation and lifetime) to power applications, including photocatalysis and herbicide removal from waterways.
{"title":"Ultrafast planarization of photoexcited ligands in metal–organic frameworks gates charge transfer to promote photocatalysis","authors":"Logan S. Lancaster, Taylor D. Krueger, Cheng Chen, E. N. Musa, Jacob M. Lessard, Nan-Chieh Chiu, Makenzie T. Nord, Kyriakos C. Stylianou, Chong Fang","doi":"10.1063/5.0194451","DOIUrl":"https://doi.org/10.1063/5.0194451","url":null,"abstract":"Metal–organic frameworks (MOFs) have emerged as a highly tunable class of porous materials with wide-ranging applications from gas capture to photocatalysis. Developing these exciting properties to their fullest extent requires a thorough mechanistic understanding of the structure–function relationships. We implement an ultrafast spectroscopic toolset, femtosecond transient absorption and femtosecond stimulated Raman spectroscopy (FSRS), to elucidate the correlated electronic and vibrational dynamics of two isostructural 1,3,6,8-tetrakis(p-benzoic acid)pyrene (TBAPy)-based MOFs, which manifest drastically different photocatalytic behaviors. Systematic comparisons between the M3+-TBAPy MOFs and bare ligands in various environments reveal the unproductive dimer formation in Al-TBAPy, whereas Sc-TBAPy is dominated by a catalytically active charge-transfer (CT) process. Two ground-state FSRS marker bands of the TBAPy ligand at ∼1267 and 1617 cm−1 probe the chromophore environment at thermal equilibrium. For comparison, the excited-state FSRS of Sc-TBAPy suspended in neutral water unveils a key ∼300 fs twisting motion of the TBAPy peripheral phenyl groups toward planarity, promoting an efficient generation of CT species. This motion also exhibits high sensitivity to solvent environment, which can be a useful probe; we also showed the CT variation for ultrafast dynamics of Sc-TBAPy in the glyphosate aqueous solution. These new insights showcase the power of table-top tunable FSRS methodology to delineate structural dynamics of functional molecular systems in action, including MOFs and other photosensitive “nanomachines.” We expect the uncovered ligand motions (ultrafast planarization) to enable the targeted design of new MOFs with improved CT state characteristics (formation and lifetime) to power applications, including photocatalysis and herbicide removal from waterways.","PeriodicalId":502275,"journal":{"name":"Chemical Physics Reviews","volume":"99 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141002868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gavin J. Giardino, Hongyan Wang, Jia Niu, Dunwei Wang
Lignocellulose as a form of biomass is inedible. It represents a renewable feedstock for the synthesis of chemicals and materials. Its utilization has become an area of growing interest. Of lignocellulose components, lignin is comparatively under-explored and under-utilized, despite its abundance. This Focus Review recognizes this missed opportunity and presents a concise overview on some of the most recent progress involving the generation and application of functional materials derived from lignin. Between the two commonly encountered forms of lignin, technical lignin is a by-product of the paper production industry and is highly processed under harsh conditions. As such, it has generally been used for filler and resin materials. By comparison, native lignin is rich in chemical functionalities and holds great promise for downstream chemical synthesis. In recognition of these potentials, “lignin-first” strategies have emerged to directly convert native lignin to building blocks rich in functional groups, such as alcohols and carbonyls, while maintaining the integrity of the aromatic structures in lignin. The lignin-first strategy complements the already well explored field of technical lignin utilization. These chemoselective, lignin-first methods promise routes to native lignin valorization into high-value building blocks while keeping cellulose and hemicellulose intact and, therefore, are particularly appealing. This Focus Review first recognizes the importance of the traditional strategies for technical lignin utilization and highlights some of the newest developments. It then puts an emphasis on these lignin-first approaches for improved native lignin utilizations.
{"title":"From technical lignin to native lignin: Depolymerization, functionalization, and applications","authors":"Gavin J. Giardino, Hongyan Wang, Jia Niu, Dunwei Wang","doi":"10.1063/5.0196825","DOIUrl":"https://doi.org/10.1063/5.0196825","url":null,"abstract":"Lignocellulose as a form of biomass is inedible. It represents a renewable feedstock for the synthesis of chemicals and materials. Its utilization has become an area of growing interest. Of lignocellulose components, lignin is comparatively under-explored and under-utilized, despite its abundance. This Focus Review recognizes this missed opportunity and presents a concise overview on some of the most recent progress involving the generation and application of functional materials derived from lignin. Between the two commonly encountered forms of lignin, technical lignin is a by-product of the paper production industry and is highly processed under harsh conditions. As such, it has generally been used for filler and resin materials. By comparison, native lignin is rich in chemical functionalities and holds great promise for downstream chemical synthesis. In recognition of these potentials, “lignin-first” strategies have emerged to directly convert native lignin to building blocks rich in functional groups, such as alcohols and carbonyls, while maintaining the integrity of the aromatic structures in lignin. The lignin-first strategy complements the already well explored field of technical lignin utilization. These chemoselective, lignin-first methods promise routes to native lignin valorization into high-value building blocks while keeping cellulose and hemicellulose intact and, therefore, are particularly appealing. This Focus Review first recognizes the importance of the traditional strategies for technical lignin utilization and highlights some of the newest developments. It then puts an emphasis on these lignin-first approaches for improved native lignin utilizations.","PeriodicalId":502275,"journal":{"name":"Chemical Physics Reviews","volume":"48 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140659758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Triplet–triplet annihilation upconversion (TTA-UC) has made major advances in many emerging fields in recent years, such as solar light harvesting, photocatalysis, biological imaging, and sensing. TTA-UC consists of photosensitizers and annihilators. In addition to acting as emitters, chemical modification of annihilators has expanded their roles to include the formation of organic gel to avoid oxygen-mediated triplet quenching, amplifying the asymmetry factor of circularly polarized luminescence, constructing an upconversion sensor as recognition units, serving as photoremovable protecting groups, and photocatalysts to realize long-wavelength light-driven organic transformations. Here, we will focus on the significant applications of functionalized annihilators other than photoluminescence, which are manifested via chemical modification with other functional units. Finally, we will elaborate on the existent issues with TTA-UC, including challenges in molecular design, material development, and emerging field applications. In accordance with our research experience, we will propose potential solutions.
{"title":"Advances in functionalized annihilators to extend triplet–triplet annihilation upconversion performances","authors":"Wen-Yue Lin, Zhi Huang, Ling Huang, Gang Han","doi":"10.1063/5.0185259","DOIUrl":"https://doi.org/10.1063/5.0185259","url":null,"abstract":"Triplet–triplet annihilation upconversion (TTA-UC) has made major advances in many emerging fields in recent years, such as solar light harvesting, photocatalysis, biological imaging, and sensing. TTA-UC consists of photosensitizers and annihilators. In addition to acting as emitters, chemical modification of annihilators has expanded their roles to include the formation of organic gel to avoid oxygen-mediated triplet quenching, amplifying the asymmetry factor of circularly polarized luminescence, constructing an upconversion sensor as recognition units, serving as photoremovable protecting groups, and photocatalysts to realize long-wavelength light-driven organic transformations. Here, we will focus on the significant applications of functionalized annihilators other than photoluminescence, which are manifested via chemical modification with other functional units. Finally, we will elaborate on the existent issues with TTA-UC, including challenges in molecular design, material development, and emerging field applications. In accordance with our research experience, we will propose potential solutions.","PeriodicalId":502275,"journal":{"name":"Chemical Physics Reviews","volume":"128 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140790515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yunfei Zuo, R. K. Kwok, Jianwei Sun, J. Lam, Ben Zhong Tang
Over the past three decades, humanity has successfully surpassed Abbe's diffraction limit through the development of super-resolution microscopy (SRM), which leads to an increasing demand for specialized fluorescent molecules. The concept of aggregation-induced emission (AIE) has emerged as a powerful tool in fluorescence imaging since its inception in 2001. While thousands of distinctive AIE-based fluorescent molecules have been extensively utilized, their application in SRM was not explored until 2013. Although fewer than one hundred works on AIE and SRM have been published so far, this field is experiencing rapid growth. This review provides a comprehensive summary of advancements made by these intersecting domains over the last decade. The recent research is outlined, and four future directions are highlighted to guide the design of high-quality AIE-based probes for SRM applications that can further advance and promote this exciting area of research.
{"title":"Aggregation-induced emission luminogens for super-resolution imaging","authors":"Yunfei Zuo, R. K. Kwok, Jianwei Sun, J. Lam, Ben Zhong Tang","doi":"10.1063/5.0170812","DOIUrl":"https://doi.org/10.1063/5.0170812","url":null,"abstract":"Over the past three decades, humanity has successfully surpassed Abbe's diffraction limit through the development of super-resolution microscopy (SRM), which leads to an increasing demand for specialized fluorescent molecules. The concept of aggregation-induced emission (AIE) has emerged as a powerful tool in fluorescence imaging since its inception in 2001. While thousands of distinctive AIE-based fluorescent molecules have been extensively utilized, their application in SRM was not explored until 2013. Although fewer than one hundred works on AIE and SRM have been published so far, this field is experiencing rapid growth. This review provides a comprehensive summary of advancements made by these intersecting domains over the last decade. The recent research is outlined, and four future directions are highlighted to guide the design of high-quality AIE-based probes for SRM applications that can further advance and promote this exciting area of research.","PeriodicalId":502275,"journal":{"name":"Chemical Physics Reviews","volume":"36 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140425906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kellen Mitchell, W. Hua, Erick Bandala, A. Gaharwar, Yifei Jin
Embedded ink writing (EIW) and direct ink writing (DIW) constitute the primary strategies for three-dimensional (3D) printing within the realm of material extrusion. These methods enable the rapid fabrication of complex 3D structures, utilizing either yield-stress support baths or self-supporting inks. Both these strategies have been extensively studied across a range of fields, including biomedical, soft robotics, and smart sensors, due to their outstanding print fidelity and compatibility with diverse ink materials. Particle additives capable of forming volume-filling 3D networks are frequently incorporated into polymer solvents. This integration is crucial for engineering the requisite microstructures essential for the formulation of successful support bath and ink materials. The interplay between the particle additives and polymer solvents is critical for achieving rheological tunability in various 3D printing strategies, yet this area has not been systematically reviewed. Therefore, in this critical review, we examined various mechanisms of particle–polymer interactions, the resulting microstructures, and their subsequent impact on mechanical and rheological properties. Overall, this work aims to serve as a foundational guideline for the design of next-generation materials in the field of extrusion additive manufacturing, specifically for EIW and DIW.
{"title":"Particle–polymer interactions for 3D printing material design","authors":"Kellen Mitchell, W. Hua, Erick Bandala, A. Gaharwar, Yifei Jin","doi":"10.1063/5.0179181","DOIUrl":"https://doi.org/10.1063/5.0179181","url":null,"abstract":"Embedded ink writing (EIW) and direct ink writing (DIW) constitute the primary strategies for three-dimensional (3D) printing within the realm of material extrusion. These methods enable the rapid fabrication of complex 3D structures, utilizing either yield-stress support baths or self-supporting inks. Both these strategies have been extensively studied across a range of fields, including biomedical, soft robotics, and smart sensors, due to their outstanding print fidelity and compatibility with diverse ink materials. Particle additives capable of forming volume-filling 3D networks are frequently incorporated into polymer solvents. This integration is crucial for engineering the requisite microstructures essential for the formulation of successful support bath and ink materials. The interplay between the particle additives and polymer solvents is critical for achieving rheological tunability in various 3D printing strategies, yet this area has not been systematically reviewed. Therefore, in this critical review, we examined various mechanisms of particle–polymer interactions, the resulting microstructures, and their subsequent impact on mechanical and rheological properties. Overall, this work aims to serve as a foundational guideline for the design of next-generation materials in the field of extrusion additive manufacturing, specifically for EIW and DIW.","PeriodicalId":502275,"journal":{"name":"Chemical Physics Reviews","volume":"7 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140479666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Y. D. Maulida, Sri Hartati, Yuliar Firdaus, Anjar Taufik Hidayat, L. J. Diguna, Dominik Kowal, Annalisa Bruno, D. Cortecchia, A. Arramel, M. Birowosuto
In the past decades, halide perovskites and chalcogenide materials have provided significant contributions to the vast development for optoelectronic applications. Halide perovskites are known for their tunable properties, while chalcogenides are known for their high efficiency. The combination of these types of materials as heterostructures is thought to have been able to produce a superior device/photophysical performance. A peculiar aspect to consider is an inherent weak interaction between these layers via the stacking of different materials, promoting the realization of van der Waals heterostructures with novel functional properties. In this review, we summarize the progress and foresee the prospectives of material systems obtained by combining low-dimensional (0D, 1D, and 2D) halide perovskite and chalcogenide systems. Both emergent materials share their promise in terms of energy and charge transfer consideration. In addition, several aspects that are mutually important in this context will be outlined, namely, interlayer excitons, interfacial engineering, quantum confinement effect, and light–matter interactions. Based on these fundamental approaches, we translate the current understanding by highlighting several representative heterostructures with prominent performance such as light-emitting diodes, x-ray detectors, photodetectors, and solar cells. In this review, we focus on the rich chemistry and photophysics of these heterostructures, emphasizing the open questions related to their structure–property relationship. Finally, potential research directions and outlooks based on the implementation of halide perovskite–chalcogenide heterostructures are also proposed.
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