Polymer Chemistry最新文献_第7页

Controlling Thiyl Radical Polymerization via In Situ Desulfurization 通过原位脱硫控制硫基自由基聚合

IF 4.6 2区化学

Polymer Chemistry Pub Date : 2024-11-22 DOI: 10.1039/d4py01140f

Huajuan Hu, Ping Yi, Jiayang He, Derong Cao, Hanchu Huang

引用次数: 0

Supramolecular method enabling effective through-space charge transfer in thermally activated delayed fluorescence materials with pure orange emission† 通过超分子方法实现热激活延迟荧光材料中有效的穿越空间电荷转移，并发出纯橙色荧光

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2024-11-22 DOI: 10.1039/D4PY01181C

Yufeng Sang, Ruicong Feng, Yuqian Wang and Qiao Song

{"title":"Supramolecular method enabling effective through-space charge transfer in thermally activated delayed fluorescence materials with pure orange emission†","authors":"Yufeng Sang, Ruicong Feng, Yuqian Wang and Qiao Song","doi":"10.1039/D4PY01181C","DOIUrl":"10.1039/D4PY01181C","url":null,"abstract":"Achieving efficient charge transfer remains a significant challenge for thermally activated delayed fluorescence (TADF) materials that rely on through-space charge transfer (TSCT). In this study, we successfully applied a novel donor–acceptor pair characterized by non-exclusive charge transfer to TSCT-based TADF polymers. We propose a supramolecular strategy to optimize charge transfer by regulating the spatial arrangement of the donor–acceptor pairs. As the order of these pairs increases, localized emission from monomers is gradually quenched, ultimately resulting in pure orange emission. Photophysical studies reveal that improved spatial order accelerates the reverse intersystem crossing process, thereby enhancing the radiative transition rate of TADF emission and enabling efficient TSCT. This research offers a feasible method for designing TSCT-TADF materials. The resulting supramolecular systems with ordered configurations exhibit excellent energy and charge transfer performance, indicating their potential applications in optoelectronic devices, bioimaging, photodynamic therapy, and other fields.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":" 1","pages":" 62-68"},"PeriodicalIF":4.1,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142684853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and RAFT polymerisation of hydrophobic acrylamide monomers derived from plant oils 从植物油中提取的疏水性丙烯酰胺单体的合成和 RAFT 聚合反应

IF 4.6 2区化学

Polymer Chemistry Pub Date : 2024-11-21 DOI: 10.1039/d4py01100g

Oliver Joseph Harris, Peter Tollington, Calum James Greenhalgh, Ryan Larder, Helen Willcock, Fiona Hatton

{"title":"Synthesis and RAFT polymerisation of hydrophobic acrylamide monomers derived from plant oils","authors":"Oliver Joseph Harris, Peter Tollington, Calum James Greenhalgh, Ryan Larder, Helen Willcock, Fiona Hatton","doi":"10.1039/d4py01100g","DOIUrl":"https://doi.org/10.1039/d4py01100g","url":null,"abstract":"Polymeric materials based on fatty acids (FAs) have a combination of characteristics (alkene groups, hydrophobicity, tuneable Tg) that give them great potential as renewable, high value materials. Here, we investigate the base catalysed transesterification of four different plant oils (high oleic sunflower, olive, hydrogenated coconut and hydrogenated rapeseed) with N-hydroxyethyl acrylamide. By conducting kinetics experiments, investigating potential side reactions and improving isolation of the target products, we were able to identify reactive impurities (radical inhibitors, unintended co-monomers) that were found to remain in the impure brine washed plant oil-based monomers (POBM). Kinetics experiments were then performed to investigate the RAFT polymerisation of these monomers. It was found that the more sustainable brine washing process was viable for the controlled radical polymerisation of the higher kp app (saturated) monomers, however column purification was necessary for good control of unsaturated monomers. Polymers with values of Mn between 3,000 and 12,000 gmol-1 were synthesised and dependent on the FA source exhibited either amorphous or semi-crystalline behaviour (Tg values between -1 and 33 °C, Tm values between 48 and 66 °C). This work demonstrates the first example of RAFT polymerisation of acrylamide monomers derived from plant oils by a one step direct transesterifcation, opening the door for novel well-defined, functional bio-based polymers.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"23 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Isomer-driven polymerization, depolymerization, and reconstruction† 异构体驱动的聚合、解聚和重构

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2024-11-20 DOI: 10.1039/D4PY01281J

Herbert Wakefield IV, Nicholas J. Fromel, Jennifer Jiang, Ilia Kevlishvili, Yunxin Yao, Stephen L. Craig, Heather J. Kulik and Rebekka S. Klausen

引用次数: 0

Simple amination of polystyrene via radical sp3 C–H imination† 通过sp3 C-H激酶胺化法简单胺化聚苯乙烯

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2024-11-19 DOI: 10.1039/D4PY01021C

Mengnan Hu, Lizhe He and Robert J. Comito

引用次数: 0

A new recyclable polymer based on Diels–Alder crosslinking networks derived from anisaldehyde† 一种基于由苯甲醛衍生的 Diels-Alder 交联网络的新型可回收聚合物

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2024-11-19 DOI: 10.1039/D4PY00759J

Caiyun Wang, Weibo Liu, Keying Wang, Kaili Wang, Bowen Deng, Liqiang Wan, Qiaolong Yuan and Farong Huang

引用次数: 0

Assembly-Controlled Supramolecular Aggregation-Induced Emission Systems based on Amphiphilic Block Polymer Hosts 基于两性嵌段聚合物宿主的组装控制超分子聚集诱导发射系统

IF 4.6 2区化学

Polymer Chemistry Pub Date : 2024-11-18 DOI: 10.1039/d4py01009d

Yu-Qi Zhu, Zhong-Yuan Chen, Zhi-Wei Zhou, Zhao-Jun Chen, Ming-Xue Wu, Xing-Huo Wang

{"title":"Assembly-Controlled Supramolecular Aggregation-Induced Emission Systems based on Amphiphilic Block Polymer Hosts","authors":"Yu-Qi Zhu, Zhong-Yuan Chen, Zhi-Wei Zhou, Zhao-Jun Chen, Ming-Xue Wu, Xing-Huo Wang","doi":"10.1039/d4py01009d","DOIUrl":"https://doi.org/10.1039/d4py01009d","url":null,"abstract":"Fabrication of controlled supramolecular assembly and establishing the structure-function relationship was of great significance in supramolecular chemistry. Uniform fluorescence supramolecular polymeric vesicles and/or micelles with enhanced photophysical property were elaborately designed and prepared by amphiphilic block polymer hosts bearing pillar[5]arene units, which following the working mechanism of synergistically confined effect of hydrophobic interactions and host-guest interactions. Additionally, transformation from supramolecular polymeric vesicles to supramolecular polymeric micelles was achieved by selecting different length of hydrophilic segments in block polymer hosts. The optical performance was detailed deciphered by the impact factors including guest patterns, density of pillar[5]arene unit, length of hydrophilic segments and solvent environment. By exploiting amphiphilic block polymer hosts, efficient artificial light-harvesting systems with ordered arrangement of donor and acceptor molecules were well constructed to realize tunable emission wavelength, which was used as Morse code for information encryption matrix with high storage capacity capable of simultaneously storing Chinese, English and digits.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"50 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of high molar mass all-(meth)acrylic thermoplastic elastomers by photo-iniferter RAFT polymerisation† 通过光iferter RAFT 聚合合成高摩尔质量全（甲基）丙烯酸热塑性弹性体

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2024-11-18 DOI: 10.1039/D4PY01123F

Izabela Kurowska, Maksym Odnoroh, Oleksandr Ivanchenko, Marc Guerre and Mathias Destarac

引用次数: 0

Azide–alkyne cycloaddition for polydimethylsiloxane chemistry 用于聚二甲基硅氧烷化学的叠氮烷烃环化反应

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2024-11-15 DOI: 10.1039/D4PY01052C

Kseniya A. Bezlepkina, Sergey A. Milenin and Aziz M. Muzafarov

引用次数: 0

Effect of architecture on the thermo-induced phase transition of methacrylate-based symmetric pentablock terpolymers† 结构对甲基丙烯酸酯基对称五嵌段三元共聚物热诱导相变的影响

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2024-11-14 DOI: 10.1039/D4PY01033G

Shaobai Wang, Xu Liu, Shuchen Wang and Theoni K. Georgiou

{"title":"Effect of architecture on the thermo-induced phase transition of methacrylate-based symmetric pentablock terpolymers†","authors":"Shaobai Wang, Xu Liu, Shuchen Wang and Theoni K. Georgiou","doi":"10.1039/D4PY01033G","DOIUrl":"10.1039/D4PY01033G","url":null,"abstract":"A series of six symmetric pentablock terpolymers were synthesised using group transfer polymerisation (GTP). The chemical composition of these terpolymers comprises 45 wt% of oligo(ethylene glycol) methyl ether methacrylate (molar mass = 300 g mol−1, OEGMA300, block A), 30 wt% of n-butyl methacrylate (BuMA, block B), and 25 wt% of di(ethylene glycol) methyl ether methacrylate (DEGMA, block C), aiming at a total molar mass (MM) of 9200 g mol−1 with varied architectures, including ABCBA, CBABC, BCACB, ACBCA, BACAB, and CABAC. The impact of the polymer architecture (specifically the block number and sequence) was evaluated by comparing the properties of these pentablock terpolymers in aqueous solution, including micellisation, thermo-induced phase transition and gelation, and rheological properties, with each other and the triblock controls (ABC, ACB, and CAB). It was found that the cloud point temperature (Tcp) of the pentablock terpolymer solution is related to the corresponding micelle conformation, which is dependent on the architecture of the polymer chain. Moreover, the BCACB pentablock terpolymer demonstrated enhanced gelation performance, exhibiting a broader gelation range in terms of both concentration and temperature as well as higher storage modulus (G′), compared to other pentablock and triblock counterparts.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":" 47","pages":" 4894-4907"},"PeriodicalIF":4.1,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/py/d4py01033g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142610339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0