ACS Macro Letters最新文献_第6页

Sequence-Dependent Effects of Folded Glycopolymer Structures on Their Biomolecular Recognition 折叠糖共聚物结构对其生物分子识别的序列依赖效应

IF 5.8

ACS Macro Letters Pub Date : 2025-06-30 DOI: 10.1021/acsmacrolett.5c00377

Masanori Nagao, Daichi Yoshimatsu, Hikaru Matsumoto, Yoshiko Miura

引用次数: 0

Polar Perturbations of Dipolar Interactions in Azole-Based Poly(ionic liquids) 偶极相互作用的极性摄动

IF 5.8

ACS Macro Letters Pub Date : 2025-06-20 DOI: 10.1021/acsmacrolett.5c00309

Jiahui Liu, Md. Walli Ullah, Marek W. Urban

{"title":"Polar Perturbations of Dipolar Interactions in Azole-Based Poly(ionic liquids)","authors":"Jiahui Liu, Md. Walli Ullah, Marek W. Urban","doi":"10.1021/acsmacrolett.5c00309","DOIUrl":"https://doi.org/10.1021/acsmacrolett.5c00309","url":null,"abstract":"Azole-based polymeric ionic liquids (PILs) containing imidazolium (Im) p(Im-TFSI) and triazolium (Tr) p(Tr-TFSI) ring cations naturalized by bis(trifluoromethane sulfonyl)imide (TFSI) anions were synthesized to elucidate the origin of dipolar–ionic interactions and their role in conductivity and mechanical properties. Spectroscopic analysis of p(Im-TFSI) and p(Tr-TFSI) PILs revealed that the presence of polar H2O alters ionic and dipolar interactions, resulting in distinct ring-dependent hydration effects. In p(Tr-TFSI), more stable cation–anion–H2O entities result from stronger electrostatic surface potentials (∼2 kcal/mol), where distinct separation of positive and negative electrostatic potentials in Tr-TFSI cation–anion pairs facilitates the formation of localized clusters inducing dipole–dipole interactions. In the presence of H2O, ionic mobility is enhanced by solvating cation–anion pairs at the expense of weaker van der Waals interactions. The content of H2O near Tr rings is higher, but there is restricted ionic mobility due to stronger polar forces that are formed at the expense of diminished induced dipole–dipole interactions. In contrast, in Im-based polymers, H2O molecule associations with cation–anion pairs are weaker, and enhanced ionic mobility is reflected in increased conductivity values by a factor of 2. Both Im and Tr rings also facilitate distinct parallel resistor–capacitor (RC) responses with constant phase element (CPE) combinations; upon exposure to H2O, the parallel RC circuits undergo configuration by an additional in-series connected R-CPE element.","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":"15 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335004","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

Microwave-Assisted Depolymerization of Polymethacrylates 微波辅助聚甲基丙烯酸酯解聚

IF 5.8

ACS Macro Letters Pub Date : 2025-06-20 DOI: 10.1021/acsmacrolett.5c00291

Manish Kumar, Maxime Michelas, Cyrille Boyer

引用次数: 0

Luminescent Perovskite–Polymer Gel Composites Prepared in Situ via PET-RAFT Polymerization PET-RAFT原位聚合制备荧光钙钛矿-聚合物凝胶复合材料

IF 5.8

ACS Macro Letters Pub Date : 2025-06-20 DOI: 10.1021/acsmacrolett.5c00269

Zeyi Yan, Jingjing Xiao, Weijie Zhang, Yuxiang Zhang, Lei Liu, Bo Zhang, Anchao Feng

{"title":"Luminescent Perovskite–Polymer Gel Composites Prepared in Situ via PET-RAFT Polymerization","authors":"Zeyi Yan, Jingjing Xiao, Weijie Zhang, Yuxiang Zhang, Lei Liu, Bo Zhang, Anchao Feng","doi":"10.1021/acsmacrolett.5c00269","DOIUrl":"https://doi.org/10.1021/acsmacrolett.5c00269","url":null,"abstract":"Although organic–inorganic lead halide perovskite nanocrystals (NCs) have emerged as new semiconductor photocatalysts with excellent photocatalytic performance, their stability remains inferior to that of all-inorganic lead halide perovskite NCs. To address this limitation, we propose a one-step in situ polymerization strategy via a CH3NH3PbBr3 NCs-initiated photoinduced electron/energy transfer-reversible addition–fragmentation chain transfer polymerization to construct CH3NH3PbBr3–PBA/PMA gel composites, demonstrating the feasibility of both oxygenated and oxygen-free preparation processes. In this system, CH3NH3PbBr3 NCs serve dual roles: catalyzing the polymerization reaction and endowing the nanocomposites with fluorescence properties. By adjusting the cross-linker content, gel composites with tunable mechanical strength were successfully fabricated. Furthermore, the composites exhibited sustained fluorescence intensity for over 15 days in air and water and enhanced ethanol resistance, with the polymer matrix significantly improving the environmental stability of CH3NH3PbBr3 NCs.","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":"44 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335189","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 : 2025-06-17

Luis L. Jessen, Kameron R. Hansen, George B. Crull, Tanner L. Grover and C. Allan Guymon*,