Polymer Chemistry最新文献_第10页

Construction of the donor–acceptor type conjugated porous polymer/g-C3N4 S-scheme heterojunction for efficient photocatalytic hydrogen production† 高效光催化制氢用施受体型共轭多孔聚合物/g- c3n4s型异质结的构建

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-26 DOI: 10.1039/d4py01397b

Yinfeng Han , Miao Liu , Aihuan Sun , Fei Zhao , Jinsheng Zhao , Chang-An Wang

{"title":"Construction of the donor–acceptor type conjugated porous polymer/g-C3N4 S-scheme heterojunction for efficient photocatalytic hydrogen production†","authors":"Yinfeng Han , Miao Liu , Aihuan Sun , Fei Zhao , Jinsheng Zhao , Chang-An Wang","doi":"10.1039/d4py01397b","DOIUrl":"10.1039/d4py01397b","url":null,"abstract":"<div><div>The rational design of charge transport mechanisms is crucial for constructing efficient catalysts with polymer heterojunctions (PHJs) for photocatalytic hydrogen production (PHP). In this study, a series of composites DBDSO/g-C<sub>3</sub>N<sub>4</sub>-<em>x</em> (<em>x</em> = 10, 15, 20, and 30) were synthesized by combining different proportions of g-C<sub>3</sub>N<sub>4</sub> with DBDSO using the solvent dispersion method. The donor–acceptor (D–A) type conjugated porous polymer (CPP), named DBDSO, was synthesized through the Suzuki coupling reaction between dibenzothiophene-<em>S</em>,<em>S</em>-dioxide (DBTSO) and 4,8-di(thiophen-2-yl) benzo[1,2-<em>b</em>:4,5-<em>b</em>′] dithiophene (DBD). Optoelectronic measurements and theoretical simulations revealed that the formation of S-scheme PHJs facilitated efficient separation and transport of photo-generated carriers, resulting in a decrease in fluorescence lifetimes from 3.78 ns in pure g-C<sub>3</sub>N<sub>4</sub> to 2.63 ns in the DBDSO/g-C<sub>3</sub>N<sub>4</sub>-15 composite. As a result, DBDSO/g-C<sub>3</sub>N<sub>4</sub>-15 exhibited significantly enhanced PHP performance compared to pure g-C<sub>3</sub>N<sub>4</sub> catalysts without any precious metal co-catalyst addition, achieving an impressive hydrogen evolution rate (HER) of 80.75 mmol g<sup>−1</sup> h<sup>−1</sup>. Additionally, DBDSO/g-C<sub>3</sub>N<sub>4</sub>-15 demonstrated good photocatalytic stability with an apparent quantum yield of 3.88% at a wavelength of 420 nm. This work presents a promising approach for enhancing the photocatalytic HER through rational structural design to regulate charge transfer.</div></div>","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"16 14","pages":"Pages 1603-1612"},"PeriodicalIF":4.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143538501","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

Structure–property relationships of ionic poly(ethylene terephthalate) (PET): effect of ion content and species 离子型聚对苯二甲酸乙酯（PET）的结构-性能关系：离子含量和种类的影响

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-21 DOI: 10.1039/d4py01482k

Jia-Ming Song , Xue-Shuai Wang , Jun-Yu Li , Yi Liu , Liu-Chun Zheng

{"title":"Structure–property relationships of ionic poly(ethylene terephthalate) (PET): effect of ion content and species","authors":"Jia-Ming Song , Xue-Shuai Wang , Jun-Yu Li , Yi Liu , Liu-Chun Zheng","doi":"10.1039/d4py01482k","DOIUrl":"10.1039/d4py01482k","url":null,"abstract":"<div><div>The functionalization of poly(ethylene terephthalate) (PET) can potentially expand the applications of PET, particularly in high-value-added fields. To address the limitations of the low ionic content of traditional anionic PET, our study employs sodium dimethyl isophthalate-5-sulfonate (SIPM) as the ionic monomer. The copolymer was synthesized by transesterification and polycondensation. Ethylene glycol (EG) or butanediol (BDO) was applied to react with SIPM to obtain different types of ionic SIPE or SIPB. The ionic monomers are introduced into the PET macromolecular chains by reacting dimethyl terephthalate (DMT) and EG with SIPE or SIPB; for the first time, the effect of ion types and contents on PET properties was systematically studied. The incorporation of ionic groups leads to a notable enhancement in the mechanical, thermal, and hydrophilic properties of PET ionomers. The introduction of SIPB effectively improves the elongation at break and impact strength of PET, while the incorporation of SIPE substantially enhances the tensile and flexural strength of PET. Furthermore, an increase in the ion content evidently improves the hydrophilicity of the PET ionomer, with maximum water absorption of 30% and lowest water contact angle of 67°. With the introduction of the ion group, the macromolecular chain's regularity was disrupted, and the crystallinity of the PET ionomers was reduced. These changes promise an increase in transparency. Consequently, PET exhibits great potential to be applied in packaging materials, the textile industry, and the optical field.</div></div>","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"16 10","pages":"Pages 1197-1207"},"PeriodicalIF":4.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143026919","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

Polymethylene with cage silsesquioxane: densely grafted structure prevents side-chain crystallization† 聚乙烯笼型硅氧烷：密集接枝结构防止侧链结晶

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-21 DOI: 10.1039/d4py01222d

Yu Tomioka , Tomoki Yasui , Kensuke Naka , Hiroaki Imoto

引用次数: 0

Upcycling polyethersulfones to luminescent materials by aminolysis† 聚醚砜通过氨解升级回收为发光材料

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-21 DOI: 10.1039/d4py01250j

Johan Liotier , Leila Issoufou Alfari , Benoit Mahler , Thomas Niehaus , Christophe Dujardin , Simon Guelen , Vincent Schanen , Véronique Dufaud , Jean Raynaud , Vincent Monteil

引用次数: 0

1,2-Dithiolane/yne photopolymerizations to generate high refractive index polymers† 1,2-二硫代烷/炔光聚合制备高折射率聚合物

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-21 DOI: 10.1039/d4py01337a

Marianela Trujillo-Lemon , Benjamin D. Fairbanks , Andrew N. Sias , Robert R. McLeod , Christopher N. Bowman

{"title":"1,2-Dithiolane/yne photopolymerizations to generate high refractive index polymers†","authors":"Marianela Trujillo-Lemon , Benjamin D. Fairbanks , Andrew N. Sias , Robert R. McLeod , Christopher N. Bowman","doi":"10.1039/d4py01337a","DOIUrl":"10.1039/d4py01337a","url":null,"abstract":"<div><div>Copolymerization and conjugate addition of disulfides generally and dithiolanes particularly have been reported for various applications. Here, a new framework for preparing high refractive index polymeric materials through the photoinitiated addition of methyl ester of lipoic acid (LipOMe) or methyl 4-methyl-1,2-dithiolane-4-carboxylate (Me-AspOMe) with various alkynes is explored, and an infrared spectroscopy methodology was developed for understanding the dithiolane homopolymerization kinetics. The effects of the 1,2-dithiolane and alkyne chemical structures on reaction rates, polymer structures, and optical properties of the synthesized polymers were examined. Characterization of the photopolymerization products showed significant dependence on the specific structure of the 1,2-dithiolane and alkyne reactants. The ability of the 1,2-dithiolane/alkyne reaction to introduce a large amount of sulfide linkages resulted in differences in the polymer refractive index relative to that of the unreacted materials, reaching values up to 0.07. Furthermore, the application of these 1,2-dithiolane-alkyne systems into two-stage photopolymeric holography materials in a two-dimensional, high-refractive index structure was demonstrated.</div></div>","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"16 10","pages":"Pages 1176-1187"},"PeriodicalIF":4.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/py/d4py01337a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143077212","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

Binuclear Ni catalyzed ethylene copolymerization with short chain alkenol monomers† 双核镍催化乙烯与短链烯醇单体共聚

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-21 DOI: 10.1039/d4py01480d

Yuan Lu , Gang Ji , Shuyang Yu , Xiaoshan Ning , Xiu-Li Sun , Yanshan Gao , Xiaoyan Wang , Yong Tang

{"title":"Binuclear Ni catalyzed ethylene copolymerization with short chain alkenol monomers†","authors":"Yuan Lu , Gang Ji , Shuyang Yu , Xiaoshan Ning , Xiu-Li Sun , Yanshan Gao , Xiaoyan Wang , Yong Tang","doi":"10.1039/d4py01480d","DOIUrl":"10.1039/d4py01480d","url":null,"abstract":"<div><div>Ethylene coordination copolymerization with vinyl polar monomers, particularly short chain alkenols, offers an attractive method for controlled synthesis of important hydroxy-functionalized polyethylenes under mild conditions. However, reports on short-chain alkenol copolymerization are limited due to issues like chelating coordination and β-O elimination. Here, we report the synthesis and characterization of binuclear Ni complexes for ethylene copolymerization with various alkenol monomers such as allyl-OH, 3-buten-1-ol, 4-penten-1-ol and 9-decen-1-ol. These complexes, upon activation with Et<sub>2</sub>AlCl, achieved notable activity (as high as 592 kg (mol cat h atm)<sup>−1</sup>) in ethylene/3-buten-1-ol copolymerization, producing copolymers with 1.7 mol% comonomer incorporation and a high molecular weight (<em>M</em><sub>n</sub> = 64.2 kg mol<sup>−1</sup>). The activity and comonomer content were influenced by Et<sub>2</sub>AlCl loading, reaction temperature, and alkenol monomer length, with longer alkenols such as 9-decen-1-ol yielding higher activity, comonomer incorporation and molecular weight. Activities up to 169 kg (mol cat h atm)<sup>−1</sup> were also achieved in ethylene/allyl-OH copolymerization with reduced molecular weight (<em>M</em><sub>n</sub> = 17.2 kg mol<sup>−1</sup>). Microstructural analysis revealed predominant in-chain and chain-end polar monomer incorporation in all cases. Notably, ethylene/allyl-OH copolymers exhibited unique olefinic end groups and microstructures assignable to Friedel–Crafts reactions, which is likely due to an alternative chain termination pathway associated with the short chain length between the O atom and the active Ni center. For comparison, ethylene/allyl-OAc copolymers showed exclusively olefinic groups, indicating a β-OAc elimination mechanism. This process resulted in lower activity and molecular weight, suggesting catalyst poisoning from rapid chain termination.</div></div>","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"16 10","pages":"Pages 1146-1154"},"PeriodicalIF":4.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143071983","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

Room-temperature magnetism in the crystal of a 1,6-heptadiyne derivative and its processable polymer† 1,6-庚二炔衍生物和可加工聚合物晶体的室温磁性

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-21 DOI: 10.1039/d4py01459f

Manyu Chen , Guangze Hu , Zuping Xiong , Haoyuan Hu , Jing Zhi Sun , Haoke Zhang , Ben Zhong Tang

引用次数: 0

Synthesis of poly(3,4-propylenedioxythiophene) (PProDOT) analogues via mechanochemical oxidative polymerization† 机械化学氧化聚合法制备聚（3,4-丙基二氧噻吩）（PProDOT）类似物

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-21 DOI: 10.1039/d4py01253d

Tanzida Zubair , Raul S. Ramos , Ashley Morales , Robert M. Pankow

{"title":"Synthesis of poly(3,4-propylenedioxythiophene) (PProDOT) analogues via mechanochemical oxidative polymerization†","authors":"Tanzida Zubair , Raul S. Ramos , Ashley Morales , Robert M. Pankow","doi":"10.1039/d4py01253d","DOIUrl":"10.1039/d4py01253d","url":null,"abstract":"<div><div>Conjugated polymers (CPs) are foundational materials in established and emerging organic electronic technologies, including organic photovoltaics, lithium-ion batteries, electrochromic displays and smart-windows, and thin-film transistors. Although CPs can be prepared <em>via</em> sustainable syntheses relative to their inorganic counterparts, current polymerization methods often invoke the use of toxic, hazardous solvents, such as toluene, chlorobenzene, or dimethylformamide, and high-temperatures (<em>T</em> > 100 °C) to afford polymer products in desirable yields and molecular weights (<em>M</em><sub>n</sub>). Here, we report the solvent-free synthesis of poly(3,4-propylenedioxythiophene) (PProDOT) analogues using mechanochemical oxidative polymerization without the application of external heating. PProDOT-OC6, which is functionalized with <em>n</em>-hexyloxy sidechains, is synthesized in 46% yield with a <em>M</em><sub>n</sub> of 16.9 kg mol<sup>−1</sup> in 1 h using only a milling jar and ball, FeCl<sub>3</sub> oxidant, and NaCl as an additive. The structural fidelity of mechanochemically synthesized PProDOT-OC6 is confirmed <em>via</em><sup>1</sup>H-NMR relative to PProDOT-OC6 synthesized using solvent based oxidative polymerization, in addition to the optical absorption and electrochemical properties. The optimal mechanochemical polymerization conditions are then applied to PProDOT analogues with extended, <em>n</em>-decyloxy (PProDOT-OC10) or oligo(ethylene glycol) sidechains (PProDOT-OEG<sub>3</sub>) to demonstrate the tolerance of these solvent-free polymerization conditions towards structurally diverse sidechains. These findings offer a new platform and approach for further developing sustainable CP polymerization methods.</div></div>","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"16 10","pages":"Pages 1188-1196"},"PeriodicalIF":4.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050490","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

Novel hyperbranched polymers from transfer-dominated branching radical telomerisation (TBRT) of diacrylate taxogens† 转移主导分支自由基端粒化（TBRT）的新型超支化聚合物

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-21 DOI: 10.1039/d5py00062a

Samuel Mckeating , Corinna Smith , Oliver Penrhyn-Lowe , Sean Flynn , Stephen Wright , Pierre Chambon , Andrew Dwyer , Steve Rannard

引用次数: 0

A click-reaction for precise combination drug delivery: a general pH-responsive degradable backboned polyprodrug strategy† 精确组合药物递送的点击反应：一般ph响应的可降解骨架多药策略

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-02-21 DOI: 10.1039/d4py01390e

Jiali Wang , Yunpeng Luo , Weixun Duan , Daquan Wang , Lingjie Meng

引用次数: 0