Cheng-Long Ji, Yi-Nan Lu, Siyu Xia, Chengjian Zhu, Congqing Zhu, Weipeng Li, Jin Xie
The simple and efficient conversion of carboxylic acids into structurally diverse organic molecules is highly desirable in chemical synthesis. This review covers recent developments in photocatalytic methodology for late‐stage transformations of complex carboxylic acids and their derivatives enabled by radical decarboxylation and deoxygenation, highlighting some representative and significant contributions in this field. These advancements are categorized based on the reactivity patterns exhibited by the carboxylic acids. Several activation modes to generate alkyl or aryl radical intermediates during decarboxylation of carboxylic acids are presented, namely, single‐electron transfer (SET) oxidation, ligand‐to‐metal charge transfer (LMCT), SET reduction, and energy transfer (EnT) processes. On the other hand, direct activation of C–O bonds in carboxylic acids mediated by phosphoranyl radicals has been discussed and illustrates their potential synthetic application for the synthesis of complex aldehydes, ketones and amides.
{"title":"Photoinduced Late‐Stage Radical Decarboxylative and Deoxygenative Coupling of Complex Carboxylic Acids and Their Derivatives","authors":"Cheng-Long Ji, Yi-Nan Lu, Siyu Xia, Chengjian Zhu, Congqing Zhu, Weipeng Li, Jin Xie","doi":"10.1002/anie.202423113","DOIUrl":"https://doi.org/10.1002/anie.202423113","url":null,"abstract":"The simple and efficient conversion of carboxylic acids into structurally diverse organic molecules is highly desirable in chemical synthesis. This review covers recent developments in photocatalytic methodology for late‐stage transformations of complex carboxylic acids and their derivatives enabled by radical decarboxylation and deoxygenation, highlighting some representative and significant contributions in this field. These advancements are categorized based on the reactivity patterns exhibited by the carboxylic acids. Several activation modes to generate alkyl or aryl radical intermediates during decarboxylation of carboxylic acids are presented, namely, single‐electron transfer (SET) oxidation, ligand‐to‐metal charge transfer (LMCT), SET reduction, and energy transfer (EnT) processes. On the other hand, direct activation of C–O bonds in carboxylic acids mediated by phosphoranyl radicals has been discussed and illustrates their potential synthetic application for the synthesis of complex aldehydes, ketones and amides.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"37 1","pages":""},"PeriodicalIF":16.6,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986160","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}
Chang‐An Lo, Yixian Wang, Varun R. Kankanallu, Aditya Singla, Dean Yen, Xiaoyin Zheng, Kaustubh G. Naik, Bairav S. Vishnugopi, Callum Campbell, Vikalp Raj, Chonghang Zhao, Lu Ma, Jianming Bai, Feipeng Yang, Ruipeng Li, Mingyuan Ge, John Watt, Partha P. Mukherjee, David Mitlin, Yu‐chen Karen Chen‐Wiegart
{"title":"Front Cover: Interdependence of Support Wettability, Electrodeposition Rate, Sodium Metal Anode and SEI Microstructure","authors":"Chang‐An Lo, Yixian Wang, Varun R. Kankanallu, Aditya Singla, Dean Yen, Xiaoyin Zheng, Kaustubh G. Naik, Bairav S. Vishnugopi, Callum Campbell, Vikalp Raj, Chonghang Zhao, Lu Ma, Jianming Bai, Feipeng Yang, Ruipeng Li, Mingyuan Ge, John Watt, Partha P. Mukherjee, David Mitlin, Yu‐chen Karen Chen‐Wiegart","doi":"10.1002/anie.202500499","DOIUrl":"https://doi.org/10.1002/anie.202500499","url":null,"abstract":"","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"53 1","pages":""},"PeriodicalIF":16.6,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986162","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}
Time‐dependent afterglow colored (TDAC) behavior differs from static afterglow by involving wavelength changes, enabling low‐cost, high‐level encryption and anti‐counterfeiting. However, the existing carbon dot (CD)‐based TDAC materials lack a clear mechanistic explanation and controllable wavelength changes, significantly hindering the progress of practical applications in this field. In this study, we synthesized CDs composites with customizable tunable TDAC wavelengths across the visible region. Furthermore, we elucidated the underlying mechanism of TDAC that exhibits sequential weakening and relative strengthening of long‐ and short‐wavelength afterglow centers. This phenomenon arises due to strong emission with a short lifetime originating from long‐wavelength thermally activated delayed fluorescence (TADF), along with weak emission having a longer lifetime originating from short‐wavelength phosphorescence. The presence of surface‐rich carboxyl groups on CDs determines the short‐wavelength afterglow in their dispersed state while their high conjugation degree governs the long‐wavelength afterglow in their aggregated state. Additionally, appropriate doping levels of CDs enhance color change phenomena during afterglow. Finally, by embedding CDs into different rigid matrix, the range of afterglow changes can be tailored arbitrarily within the visible light region. Leveraging these exceptional TDAC characteristics has allowed us to successfully develop advanced 4D coding technologies that facilitate multi‐mode anti‐counterfeiting and dynamic information encryption.
{"title":"Adjusting TADF and Phosphorescence for Tailored Dynamic Time‐Dependent Afterglow Colored Carbon Dots spanning Full Visible Region","authors":"Siyu Lu, Yongqiang Zhang, Yue Liu, Xueyan Ren, Yihong Kang, Shurong Ding, Linlin Shi","doi":"10.1002/anie.202421421","DOIUrl":"https://doi.org/10.1002/anie.202421421","url":null,"abstract":"Time‐dependent afterglow colored (TDAC) behavior differs from static afterglow by involving wavelength changes, enabling low‐cost, high‐level encryption and anti‐counterfeiting. However, the existing carbon dot (CD)‐based TDAC materials lack a clear mechanistic explanation and controllable wavelength changes, significantly hindering the progress of practical applications in this field. In this study, we synthesized CDs composites with customizable tunable TDAC wavelengths across the visible region. Furthermore, we elucidated the underlying mechanism of TDAC that exhibits sequential weakening and relative strengthening of long‐ and short‐wavelength afterglow centers. This phenomenon arises due to strong emission with a short lifetime originating from long‐wavelength thermally activated delayed fluorescence (TADF), along with weak emission having a longer lifetime originating from short‐wavelength phosphorescence. The presence of surface‐rich carboxyl groups on CDs determines the short‐wavelength afterglow in their dispersed state while their high conjugation degree governs the long‐wavelength afterglow in their aggregated state. Additionally, appropriate doping levels of CDs enhance color change phenomena during afterglow. Finally, by embedding CDs into different rigid matrix, the range of afterglow changes can be tailored arbitrarily within the visible light region. Leveraging these exceptional TDAC characteristics has allowed us to successfully develop advanced 4D coding technologies that facilitate multi‐mode anti‐counterfeiting and dynamic information encryption.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"94 1","pages":""},"PeriodicalIF":16.6,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986163","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}
Yujie Zhu, Zihao Zhu, Saixue Wang, Qiming Peng, Alim Abdurahman
Stable luminescent diradicals, characterized by the presence of two unpaired electrons, exhibit unique photophysical properties that are sensitive to external stimuli such as temperature, magnetic fields, and microwaves. This sensitivity allows the manipulation of their spin states and luminescence, setting them apart from traditional closed-shell luminescent molecules and luminescent monoradicals. As a result, luminescent diradicals are emerging as promising candidates for a variety of applications. This minireview discusses recent advances in the design and synthesis of luminescent diradicals, explores their photophysical properties, and potential applications. It also examines the challenges and prospects in the development of these materials, shedding light on their potential to drive technological innovation.
{"title":"Stable Luminescent Diradicals: The Emergence and Potential Applications","authors":"Yujie Zhu, Zihao Zhu, Saixue Wang, Qiming Peng, Alim Abdurahman","doi":"10.1002/anie.202423470","DOIUrl":"https://doi.org/10.1002/anie.202423470","url":null,"abstract":"Stable luminescent diradicals, characterized by the presence of two unpaired electrons, exhibit unique photophysical properties that are sensitive to external stimuli such as temperature, magnetic fields, and microwaves. This sensitivity allows the manipulation of their spin states and luminescence, setting them apart from traditional closed-shell luminescent molecules and luminescent monoradicals. As a result, luminescent diradicals are emerging as promising candidates for a variety of applications. This minireview discusses recent advances in the design and synthesis of luminescent diradicals, explores their photophysical properties, and potential applications. It also examines the challenges and prospects in the development of these materials, shedding light on their potential to drive technological innovation.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"54 1","pages":""},"PeriodicalIF":16.6,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987174","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}
Fan Rong, Wenxin Bao, Guanyi Li, Yuxuan Ge, Wangyang Zhu, Bin Hao, Yaxue Zhao, Yunsheng Yuan, Yin Wang
Hydrogen sulfide (H2S) plays crucial inflammatory modulating roles, representing a promising candidate for anti‐inflammatory therapies. However, current H2S delivery approaches lack sufficient specificity against inflammatory response. Herein, regarding the overexpressed aminopeptidase N (APN) at the inflammation sites, an APN‐activated self‐immolative carbonyl sulfide (COS)/H2S donor (AlaCOS) was developed for inflammatory response‐specific H2S delivery. The compound showed sustained H2S generation upon APN activation in the presence of carbonic anhydrase (CA), and the responsiveness could be well regulated by modulating the amino acid sequence. Due to the inflammatory response‐specific sustained H2S delivery, AlaCOS provided potent anti‐inflammatory capability, which was further validated by RNA sequencing. In vivo experiments on a full‐thickness cutaneous wound murine model also showed the strong promoting effect on wound healing, mainly due to the regulation of the inflammatory response by AlaCOS. By introducing a caged coumarin fluorophore to the molecular architecture, self‐reporting fluorescence could be generated accompanied with APN‐mediated COS/H2S release, which achieved the visualization of H2S delivery in vitro and in vivo. This work not only offers a useful tool for studying the bioactivity of H2S on inflammation, but also provides new insights for developing novel therapies to cope with inflammation‐associated diseases.
{"title":"Aminopeptidase N‐Activated Self‐immolative Hydrogen Sulfide Donor for Inflammatory Response‐Specific Wound Healing","authors":"Fan Rong, Wenxin Bao, Guanyi Li, Yuxuan Ge, Wangyang Zhu, Bin Hao, Yaxue Zhao, Yunsheng Yuan, Yin Wang","doi":"10.1002/anie.202423527","DOIUrl":"https://doi.org/10.1002/anie.202423527","url":null,"abstract":"Hydrogen sulfide (H2S) plays crucial inflammatory modulating roles, representing a promising candidate for anti‐inflammatory therapies. However, current H2S delivery approaches lack sufficient specificity against inflammatory response. Herein, regarding the overexpressed aminopeptidase N (APN) at the inflammation sites, an APN‐activated self‐immolative carbonyl sulfide (COS)/H2S donor (AlaCOS) was developed for inflammatory response‐specific H2S delivery. The compound showed sustained H2S generation upon APN activation in the presence of carbonic anhydrase (CA), and the responsiveness could be well regulated by modulating the amino acid sequence. Due to the inflammatory response‐specific sustained H2S delivery, AlaCOS provided potent anti‐inflammatory capability, which was further validated by RNA sequencing. In vivo experiments on a full‐thickness cutaneous wound murine model also showed the strong promoting effect on wound healing, mainly due to the regulation of the inflammatory response by AlaCOS. By introducing a caged coumarin fluorophore to the molecular architecture, self‐reporting fluorescence could be generated accompanied with APN‐mediated COS/H2S release, which achieved the visualization of H2S delivery in vitro and in vivo. This work not only offers a useful tool for studying the bioactivity of H2S on inflammation, but also provides new insights for developing novel therapies to cope with inflammation‐associated diseases.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"43 1","pages":""},"PeriodicalIF":16.6,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986159","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}
Sebastian Hasenstab-Riedel, Johanna Schlögl, Amelie L. Brosius, Ahmet N. Toraman, Anja Wiesner, Simon Steinhauer, Carsten Müller
Herein, we present the first easy-to-access synthesis of the perfluorotrityl cation (15F+) with commercial GaCl3 and the further functionalization of the para-fluorine atoms of 15F+ via halodefluorination using trimethylsilyl halides TMSX (X = Cl, Br). This gives access to equally reactive perhalogenated trityl derivatives (p-3Cl12F+ and p-3Br12F+), which can be handled at room temperature. The impact of the para-exchange on the electronic structure is determined by NMR and UV-Vis spectroscopy. Finally, the new synthons' high hydride ion affinities are demonstrated computationally and experimentally by hydride abstraction from the short-chain, linear alkanes n-pentane and n-butane.
{"title":"Halogenated Trityl Cations as Easy-to-Access Super Electrophiles","authors":"Sebastian Hasenstab-Riedel, Johanna Schlögl, Amelie L. Brosius, Ahmet N. Toraman, Anja Wiesner, Simon Steinhauer, Carsten Müller","doi":"10.1002/anie.202423857","DOIUrl":"https://doi.org/10.1002/anie.202423857","url":null,"abstract":"Herein, we present the first easy-to-access synthesis of the perfluorotrityl cation (15F+) with commercial GaCl3 and the further functionalization of the para-fluorine atoms of 15F+ via halodefluorination using trimethylsilyl halides TMSX (X = Cl, Br). This gives access to equally reactive perhalogenated trityl derivatives (p-3Cl12F+ and p-3Br12F+), which can be handled at room temperature. The impact of the para-exchange on the electronic structure is determined by NMR and UV-Vis spectroscopy. Finally, the new synthons' high hydride ion affinities are demonstrated computationally and experimentally by hydride abstraction from the short-chain, linear alkanes n-pentane and n-butane.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"29 1","pages":""},"PeriodicalIF":16.6,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987069","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}
Fluorescent macrocyclic arenes have attracted increasing interest in macrocyclic and supramolecular chemistry due to their exceptional photophysical properties and versatile applications. Classical macrocyclic arenes modified with fluorescent groups at the upper or bottom rims have long provided valuable platforms across various fields. Recently, a large number of novel fluorescent macrocyclic arenes directly composed of polycyclic aromatic or heteroaromatic building blocks including naphthalene, anthracene, tetraphenylethene, pyrene, fluorene, carbazole, acridan, phenothiazine, coumarin, triphenylamine, benzothiadiazole and so on, have been reported, and they have shown specific fluorescent property, and also exhibited broad applications in molecular recognition, sensing, bioimaging and functional materials. In this review, we focus on the recent advances in the synthesis and applications of fluorescent macrocyclic arenes containing polycyclic aromatic or heteroaromatic skeletons emerged in the past decade. By categorizing these fluorescent macrocyclic arenes based on the different building blocks, this review provides a comprehensive summary of their synthesis, properties and applications.
{"title":"Fluorescent Macrocyclic Arenes: Synthesis and Applications","authors":"Xiao-Ni Han, Ying Han, Chuan-Feng Chen","doi":"10.1002/anie.202424276","DOIUrl":"https://doi.org/10.1002/anie.202424276","url":null,"abstract":"Fluorescent macrocyclic arenes have attracted increasing interest in macrocyclic and supramolecular chemistry due to their exceptional photophysical properties and versatile applications. Classical macrocyclic arenes modified with fluorescent groups at the upper or bottom rims have long provided valuable platforms across various fields. Recently, a large number of novel fluorescent macrocyclic arenes directly composed of polycyclic aromatic or heteroaromatic building blocks including naphthalene, anthracene, tetraphenylethene, pyrene, fluorene, carbazole, acridan, phenothiazine, coumarin, triphenylamine, benzothiadiazole and so on, have been reported, and they have shown specific fluorescent property, and also exhibited broad applications in molecular recognition, sensing, bioimaging and functional materials. In this review, we focus on the recent advances in the synthesis and applications of fluorescent macrocyclic arenes containing polycyclic aromatic or heteroaromatic skeletons emerged in the past decade. By categorizing these fluorescent macrocyclic arenes based on the different building blocks, this review provides a comprehensive summary of their synthesis, properties and applications.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"26 1","pages":""},"PeriodicalIF":16.6,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986164","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}
Daniele Perilli, Valeria Chesnyak, Aldo Ugolotti, Mirco Panighel, Stefano Vigneri, Francesco Armillotta, Pardis Naderasli, Matus Stredansky, Monika Schied, Paolo Lacovig, Silvano Lizzit, Cinzia Cepek, Giovanni Comelli, Harald Brune, Cristina Africh, Cristiana Di Valentin
Confined single metal atoms in graphene-based materials have proven to be excellent catalysts for several reactions and promising gas sensing systems. However, whether the chemical activity arises from the specific type of metal atom or is a direct consequence of the confinement itself remains unclear. In this work, through a combined density functional theory and experimental surface science study, we address this question by investigating Co and Ni single atoms embedded in graphene (Gr) on a Ni(111) support. These two single atom catalysts (SACs) exhibit opposite behavior toward carbon monoxide (CO) gas molecules: at RT, CO binds stably to Co, whereas it does not to Ni. We rationalize this difference by the energy position of trapped metal dxz and dyz states involved in π backdonation to CO: while for Co, these states lie at the Fermi level, for Ni are located deep below it. This conclusion is corroborated by a proof-of-concept experiment, where a Gr/Ni(111) sample containing both stable Ni and Co single atoms was exposed to a CO partial pressure of 5 ‧ 10-7 mbar. Scanning tunnelling microscopy (STM), X-ray photoelectron spectroscopy (XPS), and temperature programmed desorption (TPD) measurements confirm the selective adsorption of CO on Co at RT.
{"title":"CO Adsorption on a Single-Atom Catalyst Stably Embedded in Graphene","authors":"Daniele Perilli, Valeria Chesnyak, Aldo Ugolotti, Mirco Panighel, Stefano Vigneri, Francesco Armillotta, Pardis Naderasli, Matus Stredansky, Monika Schied, Paolo Lacovig, Silvano Lizzit, Cinzia Cepek, Giovanni Comelli, Harald Brune, Cristina Africh, Cristiana Di Valentin","doi":"10.1002/anie.202421757","DOIUrl":"https://doi.org/10.1002/anie.202421757","url":null,"abstract":"Confined single metal atoms in graphene-based materials have proven to be excellent catalysts for several reactions and promising gas sensing systems. However, whether the chemical activity arises from the specific type of metal atom or is a direct consequence of the confinement itself remains unclear.\u0000In this work, through a combined density functional theory and experimental surface science study, we address this question by investigating Co and Ni single atoms embedded in graphene (Gr) on a Ni(111) support. These two single atom catalysts (SACs) exhibit opposite behavior toward carbon monoxide (CO) gas molecules: at RT, CO binds stably to Co, whereas it does not to Ni. We rationalize this difference by the energy position of trapped metal dxz and dyz states involved in π backdonation to CO: while for Co, these states lie at the Fermi level, for Ni are located deep below it.\u0000This conclusion is corroborated by a proof-of-concept experiment, where a Gr/Ni(111) sample containing both stable Ni and Co single atoms was exposed to a CO partial pressure of 5 ‧ 10-7 mbar. Scanning tunnelling microscopy (STM), X-ray photoelectron spectroscopy (XPS), and temperature programmed desorption (TPD) measurements confirm the selective adsorption of CO on Co at RT.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"42 1","pages":""},"PeriodicalIF":16.6,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987072","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}
Yucheng Zhao, Emma M. Rettner, Megan E. Battson, Zhitao Hu, Joel Miscall, Nicholas A. Rorrer, Garret M. Miyake
Recyclable polyethylene-like multiblock polymers offer tunable mechanical properties spanning LLDPE and LDPE while maintaining high melting temperatures. Synthesized using dehydrogenative polymerization, the glass transition temperature of these materials can be modulated through side-chain branching. They demonstrate chemical recyclability, selective depolymerization in mixed streams, and adjustable adhesive strength, promoting circularity and sustainable solutions for the plastic waste crisis, as reported by Garret M. Miyake et al in their Research Article (e202415707).
{"title":"Front Cover: Tailoring the Properties of Chemically Recyclable Polyethylene-Like Multiblock Polymers by Modulating the Branch Structure","authors":"Yucheng Zhao, Emma M. Rettner, Megan E. Battson, Zhitao Hu, Joel Miscall, Nicholas A. Rorrer, Garret M. Miyake","doi":"10.1002/anie.202500811","DOIUrl":"https://doi.org/10.1002/anie.202500811","url":null,"abstract":"Recyclable polyethylene-like multiblock polymers offer tunable mechanical properties spanning LLDPE and LDPE while maintaining high melting temperatures. Synthesized using dehydrogenative polymerization, the glass transition temperature of these materials can be modulated through side-chain branching. They demonstrate chemical recyclability, selective depolymerization in mixed streams, and adjustable adhesive strength, promoting circularity and sustainable solutions for the plastic waste crisis, as reported by Garret M. Miyake et al in their Research Article (e202415707).","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"45 1","pages":""},"PeriodicalIF":16.6,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987075","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}
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