ACS Macro Letters最新文献_第4页

IF 5.1

ACS Macro Letters Pub Date : 2025-07-15

Masanori Nagao*, Daichi Yoshimatsu, Hikaru Matsumoto and Yoshiko Miura*,

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IF 5.1

ACS Macro Letters Pub Date : 2025-07-15

Manish Kumar, Maxime Michelas and Cyrille Boyer*,

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IF 5.1

ACS Macro Letters Pub Date : 2025-07-15

Huina Lin, Maninderjeet Singh, Kaylie K. Musard, Sanat K. Kumar* and Brian C. Benicewicz*,

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IF 5.1

ACS Macro Letters Pub Date : 2025-07-15

Lillian E. Mortensen, Fernando Enriquez Barrero, Talaial B. Alina, Jennifer N. Cha and Andrew P. Goodwin*,

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IF 5.1

ACS Macro Letters Pub Date : 2025-07-15

引用次数: 0

Recyclable Cross-Linked Polyethylene from Self-Condensing Telechelic Polyethylene by Combining Olefin Metathesis, Hydrogenation, and Transesterification. 从自缩合远旋聚乙烯中合成可回收的交联聚乙烯，烯烃复分解、加氢和酯交换反应。

IF 5.8

ACS Macro Letters Pub Date : 2025-07-15 DOI: 10.1021/acsmacrolett.5c00313

Mara K Kuenen,Marc A Hillmyer

{"title":"Recyclable Cross-Linked Polyethylene from Self-Condensing Telechelic Polyethylene by Combining Olefin Metathesis, Hydrogenation, and Transesterification.","authors":"Mara K Kuenen,Marc A Hillmyer","doi":"10.1021/acsmacrolett.5c00313","DOIUrl":"https://doi.org/10.1021/acsmacrolett.5c00313","url":null,"abstract":"Cross-linked polyethylene (PEX) is a high-performance thermoset with improved thermomechanical properties compared to its parent linear polymer, polyethylene (PE). The covalent bonds linking PEX, however, prevent efficient recycling or reprocessing, which represents a critical liability with respect to addressing the current global plastic waste crisis. Existing strategies to impart recyclability into PEX rely largely on radical chemistries, which are difficult to control and lead to side reactions. Here, leveraging the versatility of ruthenium-based catalysis, we prepare self-condensing PE with both telechelic and pendant hydroxyl and ester groups, respectively. Self-condensation of these polymers gives ester-cross-linked PEX, which can be recycled to the original linear polymer upon alcoholysis. In addition to chemical recyclability, these cross-linked materials exhibit stress relaxation at elevated temperatures, and we demonstrate their vitrimeric behavior in a simple healing experiment. Together, this study provides a design strategy for recyclable PEX and informs the design of other self-cross-linkable polymers.","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":"3 1","pages":"1068-1074"},"PeriodicalIF":5.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144640162","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}

引用次数: 0

IF 5.1

ACS Macro Letters Pub Date : 2025-07-15

Haley K. Beech, Kseniia M. Karnaukh, Madeleine E. Miyamoto, KeRay Chen, Jerrick Edmund, Javier Read de Alaniz*, Craig J. Hawker* and Rachel A. Segalman*,

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IF 5.1

ACS Macro Letters Pub Date : 2025-07-15

Jan-Michael Y. Carrillo*, and , Yangyang Wang,

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Nonconjugated Fumaric Acid-Based Polymers with Red-Emissive Clusteroluminescence. 非共轭富马酸基红发簇发光聚合物。

IF 5.8

ACS Macro Letters Pub Date : 2025-07-14 DOI: 10.1021/acsmacrolett.5c00252

Weida Zhu,Ting Li,Xuhui Zhang,Bihua Xia,Jing Huang,Shibo Wang,Yang Wang,Weifu Dong

{"title":"Nonconjugated Fumaric Acid-Based Polymers with Red-Emissive Clusteroluminescence.","authors":"Weida Zhu,Ting Li,Xuhui Zhang,Bihua Xia,Jing Huang,Shibo Wang,Yang Wang,Weifu Dong","doi":"10.1021/acsmacrolett.5c00252","DOIUrl":"https://doi.org/10.1021/acsmacrolett.5c00252","url":null,"abstract":"The practical utilization of clusteroluminogens (CLgens) is fundamentally constrained by their inherent limitations in short-wavelength emission and low quantum yield (QY). Although conventional heteroatom doping strategies can facilitate charge transfer states, they often introduce structural complexity and exacerbate nonradiative energy dissipation. In this study, a series of terpolymers were successfully synthesized using maleic anhydride, fumaric acid, and vinyl acetate through a one-pot free radical polymerization. This method preserved the advantages of a simple linear structure while containing only oxygen heteroatoms, thereby eliminating the need for intricate molecular designs and avoiding heavy atom effects. The saturated carbon chain structure of fumaric acid, in combination with the formation of intermolecular hydrogen bonding, effectively modulated the flexibility of the polymer chains, enhanced through-space interactions between molecular chains, and promoted the stacking effect of cluster groups. These synergistic effects enabled red light emission and bimodal emission characteristics with a high QY, demonstrating the potential for controllable emission wavelength tuning. This study, based on well-defined linear polymers, not only presents a new strategy for designing high-efficiency, long-wavelength-emitting CLgens through chain structure modulation and hydrogen bonding but also expands the practical applications of CLgens in light-converting films and encryption technologies.","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":"52 1","pages":"1060-1067"},"PeriodicalIF":5.8,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144622075","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}

引用次数: 0

Polymer Sequence Alters Sensitivity and Resolution in Chemically Amplified Polypeptoid Photoresists. 聚合物序列改变化学扩增多肽类光刻胶的灵敏度和分辨率。

IF 5.8

ACS Macro Letters Pub Date : 2025-07-10 DOI: 10.1021/acsmacrolett.5c00320

Cameron P Adams,Carolyn Henein,Xiangxi Meng,Chenyun Yuan,Javier Read de Alaniz,Christopher K Ober,Rachel A Segalman

{"title":"Polymer Sequence Alters Sensitivity and Resolution in Chemically Amplified Polypeptoid Photoresists.","authors":"Cameron P Adams,Carolyn Henein,Xiangxi Meng,Chenyun Yuan,Javier Read de Alaniz,Christopher K Ober,Rachel A Segalman","doi":"10.1021/acsmacrolett.5c00320","DOIUrl":"https://doi.org/10.1021/acsmacrolett.5c00320","url":null,"abstract":"Continuous progress in semiconductor technology relies on the ability to pattern transistors at sub-10 nm dimensions, necessitating the development of high-resolution photoresists for extreme ultraviolet (EUV) lithography. Chemically amplified resists, traditionally composed of multicomponent polymer systems, face increasing challenges at such patterning wavelengths due to nanoscale heterogeneity and stochastic defects. To address these limitations, this study explores polypeptoids, monodisperse, sequence-defined polymers─as a new class of photoresists with precise molecular control. Systematic variation of the polypeptoid chain length reveals a critical threshold necessary for successful pattern formation. Additionally, variations in monomer sequence strongly impact both photoresist sensitivity and feature fidelity, challenging conventional models that assume that sequence effects should average out across polymer chains. Finally, processing conditions such as postexposure bake temperature can be optimized to mitigate sequence-dependent variability. These results highlight polymer sequence as a powerful yet underexplored tool for tuning resist performance, offering a promising pathway toward improved nanoscale lithography.","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":"16 1","pages":"1055-1059"},"PeriodicalIF":5.8,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144594398","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}

引用次数: 0