Polymer Chemistry最新文献_第7页

Organocatalyzed photoredox radical cyclopolymerization of methacrylate- and acrylamide-crotonate hybrid monomers†

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-20 DOI: 10.1039/d4py01369g

Gaoyuan Yu , Yong-Le Tian , Ke Li , Dian-Feng Chen

引用次数: 0

Fluorescent surface-grafted block copolymer brushes obtained in a versatile post-polymerization approach†

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-20 DOI: 10.1039/d4py01490a

Piotr Wieczorek , Tomasz Kuciel , Tomasz Uchacz , Szczepan Zapotoczny

{"title":"Fluorescent surface-grafted block copolymer brushes obtained in a versatile post-polymerization approach†","authors":"Piotr Wieczorek , Tomasz Kuciel , Tomasz Uchacz , Szczepan Zapotoczny","doi":"10.1039/d4py01490a","DOIUrl":"10.1039/d4py01490a","url":null,"abstract":"<div><div>Surface-grafted luminescent polymer brushes are promising materials for applications in sensing, stimuli-responsive and light-harvesting systems. We report the synthesis of photoactive block copolymer brushes through surface-initiated atom transfer radical polymerization followed by post-polymerization functionalization and chain extension. The attachment of the bulky fluorophore, 6-aminofluorescein (6AF), to poly(glycidyl methacrylate) (poly(GMA)) brushes grafted from ITO-coated substrates was optimized by changing the solvent from DMSO to nitromethane and adjusting the amine catalyst from triethylamine to pentamethyldiethylenetriamine (PMDETA). This resulted in a faster, more controlled coupling of 6AF, leading to homogeneous distribution of chromophores within the brushes. Despite the aggregation-caused quenching nature of fluorescein, high concentrations of 6AF maintained efficient fluorescence, attributed to covalent attachment to polymer chains adopting extended conformations. Importantly, reducing PMDETA concentration preserved chain end activity, enabling the formation of apoly(GMA) block copolymer brush. The successful synthesis of block copolymers was confirmed by AFM and FTIR analyses. UV-Vis and fluorescence spectroscopy revealed that the formation of the second poly(GMA) block did not affect the photophysical properties of the first block. These photoactive block copolymer brushes, with densely packed, non-aggregated fluorophores, offer potential for light energy transfer applications and facilitate the fabrication of multi-block polymer systems with bulky pendant groups.</div></div>","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"16 13","pages":"Pages 1458-1468"},"PeriodicalIF":4.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462451","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

Isomeric orientation of the S atom in thiophene of benzodithiophene-4,8-dione to achieve a high-performance electrochromic polymer† 苯并二噻吩-4,8-二酮噻吩中 S 原子的异构取向实现高性能电致变色聚合物

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-20 DOI: 10.1039/d4py01239a

Pengjie Chao , Qicheng Su , Yuqing Liao , Daize Mo , Dongling Shen , Yizhong Shi , Lanqing Li

{"title":"Isomeric orientation of the S atom in thiophene of benzodithiophene-4,8-dione to achieve a high-performance electrochromic polymer†","authors":"Pengjie Chao , Qicheng Su , Yuqing Liao , Daize Mo , Dongling Shen , Yizhong Shi , Lanqing Li","doi":"10.1039/d4py01239a","DOIUrl":"10.1039/d4py01239a","url":null,"abstract":"<div><div>In this work, two pairs of D–A–D type isomeric monomers, ETTD, EBDD and EETTD, EEBDD, were designed and synthesized by modifying the orientation of the thiophene ring and the conjugation length of the molecular backbone based on benzodithiophene-4,8-dione acceptor units. We also successfully synthesized polymers PEETTD and PEEBDD <em>via</em> electrochemical polymerization, but failed to obtain PETTD and PEBDD from ETTD and EBDD. These subtle structural changes significantly impacted the optical and electrochemical properties and polymerization of the monomers. Notably, EEBDD exhibited the lowest onset oxidation potential (0.44 V) and the strongest absorption at 486 nm, while EETTD displayed the most red-shifted absorption edge. PEEBDD demonstrated impressive electrochromic properties, including a better optical contrast of 39.9% and a coloration efficiency of 320.7 cm<sup>2</sup> C<sup>−1</sup> at 660 nm when compared to PEETTD. These results reveal the importance of thiophene ring orientation and conjugation length in tuning the electrochromic performance of polymers, offering a promising approach for designing high-performance electrochromic materials.</div></div>","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"16 13","pages":"Pages 1469-1477"},"PeriodicalIF":4.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143495696","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

The base-free multicomponent polymerization of elemental sulfur, difluoromethylene phosphobetaine and amines toward electron-deficient aromatic polythioureas†

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-20 DOI: 10.1039/d4py01387e

Yongjiang Yu , Wang Chen , Rongrong Hu , Ben Zhong Tang

{"title":"The base-free multicomponent polymerization of elemental sulfur, difluoromethylene phosphobetaine and amines toward electron-deficient aromatic polythioureas†","authors":"Yongjiang Yu , Wang Chen , Rongrong Hu , Ben Zhong Tang","doi":"10.1039/d4py01387e","DOIUrl":"10.1039/d4py01387e","url":null,"abstract":"<div><div>Polythioureas are emerging materials with fascinating properties, such as self-healing and adhesion, high refractive indices, high dielectric constants, and heavy metal ion adsorption.With the increasing requirement for polymer structures and properties suiting a wide range of potential applications, versatile synthetic approaches are demanded to access a great diversity of polythiourea structures efficiently and economically. In this work, a commercially available difluorocarbene precursor, difluoromethylene phosphobetaine (PDFA), was selected to react with sulfur and electron-deficient aromatic amines to enable the efficient syntheses of electron-deficient polythioureas from amine monomers with low reactivity based on the high reactivity of a difluorothiocarbonyl intermediate. A one-pot catalyst-free multicomponent reaction of sulfur, PDFA and an amine was designed, which could take place efficiently in DMAc at 60 °C under nitrogen and was applicable for aromatic amines with both electron-donating and electron-withdrawing groups, producing thioureas in high yields (up to 93%). Most importantly, catalyst-free multicomponent polymerizations of sulfur, PDFA, and diamines were also developed in DMAc at 60 °C with commercially available monomers, showing high efficiency (<em>M</em><sub>w</sub>s up to 65 900 g mol<sup>−1</sup> and yields up to 99%) and wide monomer applicability, providing an efficient synthetic approach for syntheses of polythioureas. Moreover, these polythiourea thin films showed high refractive indices (<em>n</em><sub>633 nm</sub> up to 1.8133), suggesting their potential application in optical devices.</div></div>","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"16 13","pages":"Pages 1509-1518"},"PeriodicalIF":4.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393550","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

Nanoconfined polymerization: advantages of lyotropic liquid crystals as soft templates

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-20 DOI: 10.1039/d4py01470g

Seyed Mostafa Tabatabaei , Reza Foudazi

{"title":"Nanoconfined polymerization: advantages of lyotropic liquid crystals as soft templates","authors":"Seyed Mostafa Tabatabaei , Reza Foudazi","doi":"10.1039/d4py01470g","DOIUrl":"10.1039/d4py01470g","url":null,"abstract":"<div><div>Polymerization within nanoconfinement offers a versatile approach to creating nanostructured materials with unique properties and a wide range of applications. Therefore, it is important to understand the nature of polymerization in both hard and soft nanoconfinements, which have been classified based on their mechanical modulus in this perspective. We also evaluate factors affecting the kinetics of polymerization within different templates. Template walls, mainly in hard nanoconfinement, may have a catalytic effect and enhance initial polymerization rates. Additionally, increased termination rates as well as lower limiting conversion are observed in those templates. On the other hand, we discuss the self-assembled amphiphilic molecules in selective solvents, known as lyotropic liquid crystals (LLCs), as a common class of soft templates inducing nanoconfinement during polymerization. Key factors such as initiator type, monomer chemistry, crosslinking density, and arrangement of the micelles in LLC templates are brought into a framework in this perspective to analyze their impact on polymerization rates and structural retention in LLCs.</div></div>","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"16 13","pages":"Pages 1427-1440"},"PeriodicalIF":4.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/py/d4py01470g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507203","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

A pinch of silver salt to enable rac-lactide ring-opening polymerisation at room temperature using Ti-salen complexes†

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-20 DOI: 10.1039/d4py01319k

Justin Koh , Chloe A. Baker , Marianna N. Diamantakis , Nicholas J. Long , Charles Romain

引用次数: 0

An alkylthio side chain tuned the PM6 structure and elevated photovoltaic performance of ternary donor polymers†

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-20 DOI: 10.1039/d4py01152j

Pengzhi Guo , Jinye He , Junhong Liang , Tiantian Wang , Mingruo Li , Jianhong Wei , Wentao Miao , Zezhou Liang , Yuan Zhou , Junfeng Tong , Xunchang Wang , Chenglong Wang , Yangjun Xia

{"title":"An alkylthio side chain tuned the PM6 structure and elevated photovoltaic performance of ternary donor polymers†","authors":"Pengzhi Guo , Jinye He , Junhong Liang , Tiantian Wang , Mingruo Li , Jianhong Wei , Wentao Miao , Zezhou Liang , Yuan Zhou , Junfeng Tong , Xunchang Wang , Chenglong Wang , Yangjun Xia","doi":"10.1039/d4py01152j","DOIUrl":"10.1039/d4py01152j","url":null,"abstract":"<div><div>Modification of conjugated polymer skeletons using side chain engineering is important for the development of efficient conjugated donor polymers. In this work, alkylthio-substituted BDD units (SBDD) were introduced into the high-efficiency donor PM6 to construct a series of conjugated polymers (PBDB-TF-S5, PBDB-TF-S10 and PBDB-TF-S20, with the molar ratios of SBDD of 5%, 10%, and 20%, respectively), and the effect of the third component SBDD on the photovoltaic performance of organic solar cells (OSCs) was systematically investigated. First, we demonstrated that the highest occupied molecular orbital energy level (<em>E</em><sub>HOMO</sub>) of polymers gradually decreases when the content of SBDD increases, which facilitates the obtainment of progressively higher open-circuit voltages (<em>V</em><sub>OC</sub>) for the corresponding devices. Second, the detailed experimental results proved that OSCs based on PBDB-TF-S5:Y6 revealed a lower energy loss (<em>E</em><sub>loss</sub>), suitable degree of crystallinity, good miscibility with Y6, more balanced carrier mobilities and weaker charge recombination. Eventually, the power conversion efficiency (PCE) of the device based on PM6:Y6 (15.47%) was increased to 16.46% with a <em>J</em><sub>SC</sub> of 25.68 mA cm<sup>−2</sup>, <em>V</em><sub>OC</sub> of 0.861 V and fill factor (FF) of 74.45% with the help of an alkylthio side chain. This work provides a sufficient reference for optimizing the efficient donor polymer PM6 and confirms that PBDB-TF-S5 is a promising and efficient donor polymer for OSCs.</div></div>","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"16 13","pages":"Pages 1493-1502"},"PeriodicalIF":4.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143477435","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

Geometry-directed cyclisation within the transfer-dominated branching radical telomerisation of dimethacrylates†

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-20 DOI: 10.1039/d4py01368a

Corinna Smith , Oliver B. Penrhyn-Lowe , Samuel Mckeating , Stephen Wright , Andrew B. Dwyer , Steve P. Rannard

引用次数: 0

Chemical modification of poly(isosorbide carbonate)-based copolymers with boronic acids and the ammonolysis of the modified copolymers†

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-20 DOI: 10.1039/d4py01365d

Kazuaki Rikiyama , Akari Matsunami , Shunsuke Fujimata , Tatsuo Taniguchi , Daisuke Aoki

{"title":"Chemical modification of poly(isosorbide carbonate)-based copolymers with boronic acids and the ammonolysis of the modified copolymers†","authors":"Kazuaki Rikiyama , Akari Matsunami , Shunsuke Fujimata , Tatsuo Taniguchi , Daisuke Aoki","doi":"10.1039/d4py01365d","DOIUrl":"10.1039/d4py01365d","url":null,"abstract":"<div><div>Here, the functionalization of bio-based polycarbonates by post-polymerization modification with boronic acids was demonstrated as an effective method for tuning the thermal and physical properties of original polymers without losing their original nature, <em>i.e.</em>, the degradability into monomers and urea by ammonolysis. Poly(isosorbide carbonate)-based copolymers with hydroxy groups in the polymer main chain were modified using low-molecular-weight boronic acids and polymers containing boronic acids, respectively. The modifications significantly changed the glass transition temperature, solubility, and mechanical properties. In particular, the use of modifiers with two or more boronic acids noticeably varied the mobility of the polymer, resulting in cross-linked structures. All the modified polymers, including cross-linked polymers, were successfully degraded to monomers and urea by aqueous ammonia treatment. Thus, this study provides a design guideline to control the physical properties of PIC copolymers by balancing their stability as a polymer material and their degradability after use.</div></div>","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"16 13","pages":"Pages 1448-1457"},"PeriodicalIF":4.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143443979","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

Nickel-catalyzed reductive cross-coupling polymerization of dithiosulfonates and dibromides for the synthesis of polythioethers† 镍催化二硫代磺酸盐和二溴化物的还原交叉耦合聚合反应以合成聚硫醚

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-20 DOI: 10.1039/d4py01374c

Xin Yi , Hao Zeng , Chunyu Chen , Ziwei Luo , Ningyu Li , Junyang Cen , Yuening Pan , Ze Li , Pinglu Zhang

引用次数: 0