Pub Date : 2024-09-14DOI: 10.1016/j.cclet.2024.110457
Hao Lv , Zhi Li , Peng Yin , Ping Wan , Mingshan Zhu
Photocatalytic hydrogen peroxide (H2O2) production has been considered as a promising strategy for H2O2 synthesis due to its environmentally friendly. Among various photocatalysts, carbon nitride-based materials are excellent candidates for H2O2 production because of their excellent visible-light response, low cost and high stability. In this review, we summarize in detail the research progress on the photocatalytic production of H2O2 by carbon nitride. First, we summarize the basic principles of photocatalysis and photocatalytic H2O2 production. Second, the classification and modification methods of carbon-nitride-based materials are discussed, including morphology modulation, noble metal loading, defect control, heterojunction regulation, molecular structure engineering and elemental doping. Finally, the different in-situ applications of H2O2via photosynthesis were discussed, including disinfection and antibiotic resistant genes degradation, organic pollutants degradation, medical applications and fine chemical synthesis. This review brings great promise for in-situ H2O2 photosynthesis, which is expected to serve as a key component in future applications.
{"title":"Recent progress on non-metallic carbon nitride for the photosynthesis of H2O2: Mechanism, modification and in-situ applications","authors":"Hao Lv , Zhi Li , Peng Yin , Ping Wan , Mingshan Zhu","doi":"10.1016/j.cclet.2024.110457","DOIUrl":"10.1016/j.cclet.2024.110457","url":null,"abstract":"<div><div>Photocatalytic hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) production has been considered as a promising strategy for H<sub>2</sub>O<sub>2</sub> synthesis due to its environmentally friendly. Among various photocatalysts, carbon nitride-based materials are excellent candidates for H<sub>2</sub>O<sub>2</sub> production because of their excellent visible-light response, low cost and high stability. In this review, we summarize in detail the research progress on the photocatalytic production of H<sub>2</sub>O<sub>2</sub> by carbon nitride. First, we summarize the basic principles of photocatalysis and photocatalytic H<sub>2</sub>O<sub>2</sub> production. Second, the classification and modification methods of carbon-nitride-based materials are discussed, including morphology modulation, noble metal loading, defect control, heterojunction regulation, molecular structure engineering and elemental doping. Finally, the different <em>in-situ</em> applications of H<sub>2</sub>O<sub>2</sub> <em>via</em> photosynthesis were discussed, including disinfection and antibiotic resistant genes degradation, organic pollutants degradation, medical applications and fine chemical synthesis. This review brings great promise for <em>in-situ</em> H<sub>2</sub>O<sub>2</sub> photosynthesis, which is expected to serve as a key component in future applications.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 1","pages":"Article 110457"},"PeriodicalIF":9.4,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
As one of the most essential components in photocuring system, photoinitiators (PIs) exert a crucial influence on the properties of the cured product. However, commercially available PIs encounter challenges in simultaneously achieving efficient photoinitiation performance and excellent light absorption properties, significantly limiting their applications in various fields. Here, two bis-chalcones and four corresponding oxime esters (OXEs) were designed and synthesized as highly efficient PIs. Featuring a structure comprising bis-chalcone and two diphenyl sulfides, the conjugated systems in these compounds enhance their light-absorption properties in near-ultraviolet and visible region, effectively. Both the frontier molecular orbital simulations and excited state calculations suggest the contribution of sulfur atoms to electron delocalization and the formation of conjugated structure. Due to the high reactivity of the NO bond in OXE moiety, the four OXEs exhibit exceptional free radical photoinitiating ability in commercial acrylic monomers/oligomers with LED@365 nm as light source. Notably, one of them demonstrates superior performance in the photoinitiation of multifunctional crosslinker, achieving more than 70 % conversion within 3 s, coupled with outstanding absorption at 365 nm. These chalcone-based OXEs are considered to exert significant potential in the realm of free radical photocuring.
{"title":"Chalcone-derived oxime esters with efficient photoinitiation properties under LED irradiation","authors":"Qian Wu, Mengda Xu, Tianjiao Ma, Shuzhen Yan, Jin Li, Xuesong Jiang","doi":"10.1016/j.cclet.2024.110427","DOIUrl":"10.1016/j.cclet.2024.110427","url":null,"abstract":"<div><div>As one of the most essential components in photocuring system, photoinitiators (PIs) exert a crucial influence on the properties of the cured product. However, commercially available PIs encounter challenges in simultaneously achieving efficient photoinitiation performance and excellent light absorption properties, significantly limiting their applications in various fields. Here, two bis-chalcones and four corresponding oxime esters (OXEs) were designed and synthesized as highly efficient PIs. Featuring a structure comprising bis-chalcone and two diphenyl sulfides, the conjugated systems in these compounds enhance their light-absorption properties in near-ultraviolet and visible region, effectively. Both the frontier molecular orbital simulations and excited state calculations suggest the contribution of sulfur atoms to electron delocalization and the formation of conjugated structure. Due to the high reactivity of the N<img>O bond in OXE moiety, the four OXEs exhibit exceptional free radical photoinitiating ability in commercial acrylic monomers/oligomers with LED@365 nm as light source. Notably, one of them demonstrates superior performance in the photoinitiation of multifunctional crosslinker, achieving more than 70 % conversion within 3 s, coupled with outstanding absorption at 365 nm. These chalcone-based OXEs are considered to exert significant potential in the realm of free radical photocuring.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 3","pages":"Article 110427"},"PeriodicalIF":9.4,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143318374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-13DOI: 10.1016/j.cclet.2024.110456
Qijie Gong , Jian Song , Yihui Song , Kai Tang , Panpan Yang , Xiao Wang , Min Zhao , Liang Ouyang , Li Rao , Bin Yu , Peng Zhan , Saiyang Zhang , Xiaojin Zhang
In the realm of drug discovery, recent advancements have paved the way for innovative approaches and methodologies. This comprehensive review encapsulates six distinct yet interrelated mini-reviews, each shedding light on novel strategies in drug development. (a) The resurgence of covalent drugs is highlighted, focusing on the targeted covalent inhibitors (TCIs) and their role in enhancing selectivity and affinity. (b) The potential of the quantum mechanics-based computational aid drug design (CADD) tool, Cov_DOX, is introduced for predicting protein-covalent ligand binding structures and affinities. (c) The scaffolding function of proteins is proposed as a new avenue for drug design, with a focus on modulating protein-protein interactions through small molecules and proteolysis targeting chimeras (PROTACs). (d) The concept of pro-PROTACs is explored as a promising strategy for cancer therapy, combining the principles of prodrugs and PROTACs to enhance specificity and reduce toxicity. (e) The design of prodrugs through carbon-carbon bond cleavage is discussed, offering a new perspective for the activation of drugs with limited modifiable functional groups. (f) The targeting of programmed cell death pathways in cancer therapies with small molecules is reviewed, emphasizing the induction of autophagy-dependent cell death, ferroptosis, and cuproptosis. These insights collectively contribute to a deeper understanding of the dynamic landscape of drug discovery.
{"title":"New techniques and strategies in drug discovery (2020–2024 update)","authors":"Qijie Gong , Jian Song , Yihui Song , Kai Tang , Panpan Yang , Xiao Wang , Min Zhao , Liang Ouyang , Li Rao , Bin Yu , Peng Zhan , Saiyang Zhang , Xiaojin Zhang","doi":"10.1016/j.cclet.2024.110456","DOIUrl":"10.1016/j.cclet.2024.110456","url":null,"abstract":"<div><div>In the realm of drug discovery, recent advancements have paved the way for innovative approaches and methodologies. This comprehensive review encapsulates six distinct yet interrelated mini-reviews, each shedding light on novel strategies in drug development. (a) The resurgence of covalent drugs is highlighted, focusing on the targeted covalent inhibitors (TCIs) and their role in enhancing selectivity and affinity. (b) The potential of the quantum mechanics-based computational aid drug design (CADD) tool, Cov_DOX, is introduced for predicting protein-covalent ligand binding structures and affinities. (c) The scaffolding function of proteins is proposed as a new avenue for drug design, with a focus on modulating protein-protein interactions through small molecules and proteolysis targeting chimeras (PROTACs). (d) The concept of pro-PROTACs is explored as a promising strategy for cancer therapy, combining the principles of prodrugs and PROTACs to enhance specificity and reduce toxicity. (e) The design of prodrugs through carbon-carbon bond cleavage is discussed, offering a new perspective for the activation of drugs with limited modifiable functional groups. (f) The targeting of programmed cell death pathways in cancer therapies with small molecules is reviewed, emphasizing the induction of autophagy-dependent cell death, ferroptosis, and cuproptosis. These insights collectively contribute to a deeper understanding of the dynamic landscape of drug discovery.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 3","pages":"Article 110456"},"PeriodicalIF":9.4,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143318371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-12DOI: 10.1016/j.cclet.2024.110455
Mianling Yang , Meehyein Kim , Peng Zhan
{"title":"Modular miniaturized synthesis and in situ biological evaluation facilitate rapid discovery of potent MraY inhibitors as antibacterial agents","authors":"Mianling Yang , Meehyein Kim , Peng Zhan","doi":"10.1016/j.cclet.2024.110455","DOIUrl":"10.1016/j.cclet.2024.110455","url":null,"abstract":"","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 2","pages":"Article 110455"},"PeriodicalIF":9.4,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With the impact of energy crisis and environmental problems, it is urgent to develop green sustainable energy. Osmotic energy stored in the salinity difference between seawater and river water is one of the sustainable, abundant, and renewable energy. However, the membranes used to capture osmotic energy by reverse electrodialysis (RED) always suffer from low ion selectivity, low stability and low power. Hydrogels with three-dimensional (3D) networks have shown great potential for ion transportation and energy conversion. In this work, based on the homogeneity and porosity characteristics of acrylamide (AM) hydrogel, as well as the remarkable stability and abundant negative charge of 3-sulfopropyl acrylate potassium salt (SPAK), a high-performance AM/SPAK cation-selective hydrogel membrane was successfully developed for harvesting osmotic energy. Compared to AM hydrogels, utilizing AM/SPAK as a monomer mixture greatly facilitated the preparation of homogeneous polymers, exhibiting a porous structure, exceptional ion selectivity, and remarkable stability. A maximum output power density of 13.73 W/m2 was achieved at a 50-fold NaCl concentration gradient, exceeding the commercial requirement of 5 W/m2. This work broadens the idea for the construction and application of composite hydrogel in high efficiency osmotic energy conversion.
{"title":"A composite hydrogel with porous and homogeneous structure for efficient osmotic energy conversion","authors":"Guilong Li, Wenbo Ma, Jialing Zhou, Caiqin Wu, Chenling Yao, Huan Zeng, Jian Wang","doi":"10.1016/j.cclet.2024.110449","DOIUrl":"10.1016/j.cclet.2024.110449","url":null,"abstract":"<div><div>With the impact of energy crisis and environmental problems, it is urgent to develop green sustainable energy. Osmotic energy stored in the salinity difference between seawater and river water is one of the sustainable, abundant, and renewable energy. However, the membranes used to capture osmotic energy by reverse electrodialysis (RED) always suffer from low ion selectivity, low stability and low power. Hydrogels with three-dimensional (3D) networks have shown great potential for ion transportation and energy conversion. In this work, based on the homogeneity and porosity characteristics of acrylamide (AM) hydrogel, as well as the remarkable stability and abundant negative charge of 3-sulfopropyl acrylate potassium salt (SPAK), a high-performance AM/SPAK cation-selective hydrogel membrane was successfully developed for harvesting osmotic energy. Compared to AM hydrogels, utilizing AM/SPAK as a monomer mixture greatly facilitated the preparation of homogeneous polymers, exhibiting a porous structure, exceptional ion selectivity, and remarkable stability. A maximum output power density of 13.73 W/m<sup>2</sup> was achieved at a 50-fold NaCl concentration gradient, exceeding the commercial requirement of 5 W/m<sup>2</sup>. This work broadens the idea for the construction and application of composite hydrogel in high efficiency osmotic energy conversion.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 2","pages":"Article 110449"},"PeriodicalIF":9.4,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-12DOI: 10.1016/j.cclet.2024.110452
Jiaojiao Liang , Youming Peng , Zhichao Xu , Yufei Wang , Menglong Liu , Xin Liu , Di Huang , Yuehua Wei , Zengxi Wei
Flexible energy storage devices have been paid much attention and adapts to apply in various fields. Benefiting from the active sites of boron (B) and phosphorus (P) doping materials, co-doped carbon materials are widely used in energy storage devices for the enhanced electrochemical performance. Herein, B and P co-doped flexible carbon nanofibers with nitrogen-rich (B-P/NC) are investigated with electrospinning for sodium-ion battery. The flexible of binderless B-P/NC with annealing of 600 °C (B-P/NC-600) exhibits the remarkable performance for the robust capacity of 200 mAh/g at 0.1 A/g after 500 cycles and a durable reversible capacity of 160 mAh/g even at 1 A/g after 12,000 cycles, exhibiting the equally commendable stability of flexible B-P/NC-600. In addition, B-P/NC-600 delivers the reversible capacity of 265 mAh/g with the test temperature of 60 °C. More importantly, the flexible B-P/NC-600 is fabricated as anode for the whole battery, delivering the capacity of 90 mAh/g at 1 A/g after 200 cycles. Meanwhile, theoretical calculation further verified that boron and phosphorus co-doping can improve the adsorption capacity of nitrogen carbon materials. The favorable performance of flexible B-P/NC-600 can be ascribed to the nitrogen-rich carbon nanofibers with three-dimensional network matrix for the more active site of boron and phosphorus co-doping. Our work paves the way for the improvement of flexible anodes and wide-operating temperature of sodium-ion batteries by doping approach of much heteroatom.
{"title":"Boron/phosphorus co-doped nitrogen-rich carbon nanofiber with flexible anode for robust sodium-ion battery","authors":"Jiaojiao Liang , Youming Peng , Zhichao Xu , Yufei Wang , Menglong Liu , Xin Liu , Di Huang , Yuehua Wei , Zengxi Wei","doi":"10.1016/j.cclet.2024.110452","DOIUrl":"10.1016/j.cclet.2024.110452","url":null,"abstract":"<div><div>Flexible energy storage devices have been paid much attention and adapts to apply in various fields. Benefiting from the active sites of boron (B) and phosphorus (P) doping materials, co-doped carbon materials are widely used in energy storage devices for the enhanced electrochemical performance. Herein, B and P co-doped flexible carbon nanofibers with nitrogen-rich (B-P/NC) are investigated with electrospinning for sodium-ion battery. The flexible of binderless B-P/NC with annealing of 600 °C (B-P/NC-600) exhibits the remarkable performance for the robust capacity of 200 mAh/g at 0.1 A/g after 500 cycles and a durable reversible capacity of 160 mAh/g even at 1 A/g after 12,000 cycles, exhibiting the equally commendable stability of flexible B-P/NC-600. In addition, B-P/NC-600 delivers the reversible capacity of 265 mAh/g with the test temperature of 60 °C. More importantly, the flexible B-P/NC-600 is fabricated as anode for the whole battery, delivering the capacity of 90 mAh/g at 1 A/g after 200 cycles. Meanwhile, theoretical calculation further verified that boron and phosphorus co-doping can improve the adsorption capacity of nitrogen carbon materials. The favorable performance of flexible B-P/NC-600 can be ascribed to the nitrogen-rich carbon nanofibers with three-dimensional network matrix for the more active site of boron and phosphorus co-doping. Our work paves the way for the improvement of flexible anodes and wide-operating temperature of sodium-ion batteries by doping approach of much heteroatom.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 1","pages":"Article 110452"},"PeriodicalIF":9.4,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-12DOI: 10.1016/j.cclet.2024.110448
Wen Zhong , Dan Zheng , Xukun Liao , Yadi Zhou , Yan Jiang , Ting Gao , Ming Li , Chengli Yang
The escalation in the incidence of multidrug-resistant Gram-negative bacteria is becoming a pressing global concern. Polymyxin B (PMB), a conventional antibiotic with notable therapeutic efficacy against Gram-negative bacterial infections, serves as a crucial final recourse against carbapenem-resistant Klebsiella pneumoniae (CRKP) infections. Nevertheless, the clinical usage of PMB is impeded by its pronounced nephrotoxicity and poor infection site targeting. This investigation is geared to construct a nanoparticle formulation (named HA-PMB@H) comprising hyaluronic acid (HA) and PMB via a simple Schiff base reaction and further coating HA by electrostatic action. HA-PMB@H shows an average size of (153.8 ± 24.3) nm, and a mean zeta potential of (−25.6 ± 5.2) mV. Additionally, PMB can be released from HA-PMB@H more thoroughly and efficiently at pH 5.5 compared to pH 7.4, which demonstrates the Schiff base modification of PMB paves the way for its release at focus of infection. The uptake ratio of HA-PMB@H by alveolar epithelial cells (RLE-6TN) surpassed that of free PMB devoid of HA, which facilitates to the intracellular sterilization of PMB. Furthermore, the employment of HA-PMB@H ameliorated the toxicity of PMB towards human embryonic kidney cells (HEK 293) and pulmonary microvascular endothelial cells (HULEC-5a). What is more, HA-PMB@H effectively managed severe pneumonia induced by CRKP samples from clinical patients diagnosed with CRKP infection in vivo, substantially enhancing the survival rate of mice. Consequently, this nano-delivery system holds promising clinical significance in the combat against drug-resistant bacterial infections.
{"title":"Elaborate construction of pH-sensitive polymyxin B loaded nanoparticles for safe and effective treatment of carbapenem-resistant Klebsiella pneumoniae","authors":"Wen Zhong , Dan Zheng , Xukun Liao , Yadi Zhou , Yan Jiang , Ting Gao , Ming Li , Chengli Yang","doi":"10.1016/j.cclet.2024.110448","DOIUrl":"10.1016/j.cclet.2024.110448","url":null,"abstract":"<div><div>The escalation in the incidence of multidrug-resistant Gram-negative bacteria is becoming a pressing global concern. Polymyxin B (PMB), a conventional antibiotic with notable therapeutic efficacy against Gram-negative bacterial infections, serves as a crucial final recourse against carbapenem-resistant <em>Klebsiella pneumoniae</em> (CRKP) infections. Nevertheless, the clinical usage of PMB is impeded by its pronounced nephrotoxicity and poor infection site targeting. This investigation is geared to construct a nanoparticle formulation (named HA-PMB@H) comprising hyaluronic acid (HA) and PMB <em>via</em> a simple Schiff base reaction and further coating HA by electrostatic action. HA-PMB@H shows an average size of (153.8 ± 24.3) nm, and a mean zeta potential of (−25.6 ± 5.2) mV. Additionally, PMB can be released from HA-PMB@H more thoroughly and efficiently at pH 5.5 compared to pH 7.4, which demonstrates the Schiff base modification of PMB paves the way for its release at focus of infection. The uptake ratio of HA-PMB@H by alveolar epithelial cells (RLE-6TN) surpassed that of free PMB devoid of HA, which facilitates to the intracellular sterilization of PMB. Furthermore, the employment of HA-PMB@H ameliorated the toxicity of PMB towards human embryonic kidney cells (HEK 293) and pulmonary microvascular endothelial cells (HULEC-5a). What is more, HA-PMB@H effectively managed severe pneumonia induced by CRKP samples from clinical patients diagnosed with CRKP infection <em>in vivo</em>, substantially enhancing the survival rate of mice. Consequently, this nano-delivery system holds promising clinical significance in the combat against drug-resistant bacterial infections.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 3","pages":"Article 110448"},"PeriodicalIF":9.4,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143317468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-12DOI: 10.1016/j.cclet.2024.109912
Haiming Wu , Gaya N. Andrew , Rajini Anumula , Zhixun Luo
{"title":"Corrigendum to ‘How ligand coordination and superatomic-states accommodate the structure and property of a metal cluster: Cu4 (dppy)4 Cl2 vs. Cu21 (dppy)10 with altered photoluminescence’ Chin. Chem. Lett. 2024, 35, 108340","authors":"Haiming Wu , Gaya N. Andrew , Rajini Anumula , Zhixun Luo","doi":"10.1016/j.cclet.2024.109912","DOIUrl":"10.1016/j.cclet.2024.109912","url":null,"abstract":"","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"35 12","pages":"Article 109912"},"PeriodicalIF":9.4,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1001841724004315/pdfft?md5=ddf8d2e38282e482f6f6d14749a4ac75&pid=1-s2.0-S1001841724004315-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142172859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optimizing the interfacial quality of halide perovskites heterojunction to promote the photogenerated charge separation is of great significance in photocatalytic reactions. However, the delicately regulation of interfacial structure and properties of halide perovskites hybrid is still a big challenge owing to the growth uncontrollability and incompatibility between different constituents. Here we use BiOBr nanosheets as the start-template to in situ epitaxially grow Cs3Bi2Br9 nanosheets by “cosharing” Bi and Br atoms strategy for designing a 2D/2D Cs3Bi2Br9/BiOBr heterojunction. Systematic studies show that the epitaxial heterojunction can optimize the synergistic effect of BiOBr and Cs3Bi2Br9via the formation of tight-contact interfaces, strong interfacial electronic coupling and charge redistribution, which can not only drive the Z-scheme charge transfer mechanism to greatly promote the spatial separation of electron-hole pairs, but also modulate the interfacial electronic structure to facilitate the adsorption and activation of toluene molecules. The heterojunction exhibited 62.3 and 2.4-fold photoactivity improvement for toluene oxidation to benzaldehyde than parental BiOBr and Cs3Bi2Br9, respectively. This study not only proposed a novel dual atom-bridge protocol to engineer high-quality perovskite heterojunctions, but also uncovered the potential of heterojunction in promoting electron-hole separation as well as the application in photocatalytic organic synthesis.
{"title":"Dual atom-bridge effect promoting interfacial charge transfer in 2D/2D Cs3Bi2Br9/BiOBr epitaxial heterojunction for efficient photocatalysis","authors":"Yuan Teng , Zichun Zhou , Jinghua Chen , Siying Huang , Hongyan Chen , Daibin Kuang","doi":"10.1016/j.cclet.2024.110430","DOIUrl":"10.1016/j.cclet.2024.110430","url":null,"abstract":"<div><div>Optimizing the interfacial quality of halide perovskites heterojunction to promote the photogenerated charge separation is of great significance in photocatalytic reactions. However, the delicately regulation of interfacial structure and properties of halide perovskites hybrid is still a big challenge owing to the growth uncontrollability and incompatibility between different constituents. Here we use BiOBr nanosheets as the start-template to <em>in situ</em> epitaxially grow Cs<sub>3</sub>Bi<sub>2</sub>Br<sub>9</sub> nanosheets by “cosharing” Bi and Br atoms strategy for designing a 2D/2D Cs<sub>3</sub>Bi<sub>2</sub>Br<sub>9</sub>/BiOBr heterojunction. Systematic studies show that the epitaxial heterojunction can optimize the synergistic effect of BiOBr and Cs<sub>3</sub>Bi<sub>2</sub>Br<sub>9</sub> <em>via</em> the formation of tight-contact interfaces, strong interfacial electronic coupling and charge redistribution, which can not only drive the Z-scheme charge transfer mechanism to greatly promote the spatial separation of electron-hole pairs, but also modulate the interfacial electronic structure to facilitate the adsorption and activation of toluene molecules. The heterojunction exhibited 62.3 and 2.4-fold photoactivity improvement for toluene oxidation to benzaldehyde than parental BiOBr and Cs<sub>3</sub>Bi<sub>2</sub>Br<sub>9</sub>, respectively. This study not only proposed a novel dual atom-bridge protocol to engineer high-quality perovskite heterojunctions, but also uncovered the potential of heterojunction in promoting electron-hole separation as well as the application in photocatalytic organic synthesis.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 2","pages":"Article 110430"},"PeriodicalIF":9.4,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-11DOI: 10.1016/j.cclet.2024.110445
Junjie Duan , Dan Chen , Long Chen , Shuying Li , Ting Chen , Dong Wang
Achieving seamless tiling through the self-assembly of organic species has long fascinated scientists for its potential applications across various fields. However, constructing periodic nanostructures with high-order tessellation remains challenging, particularly in achieving precise control at the supramolecular level. In this study, we present the successful creation of multiple seamless 2D tessellations on Au (111) surface using versatile hexagonal tiles derived from a singular molecular unit, namely 2,6,10-tribromotricycloquinazoline. Through scanning tunneling microscopy imaging, seven distinct 2D tessellations, ranging from regular to semiregular to k-uniform tilings, are unveiled at the molecular level. Density functional theory calculations provide a theoretical basis for the formation of these complex 2D tessellation, highlighting the important role of the variability of Br···Br/H contacts in facilitating complex seamless 2D tessellations on surface. This work opens avenues for exploring possibilities in constructing intricate tiling patterns with diverse applications.
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