ACS Macro Letters最新文献_第2页

High-Resolution Total Internal Reflection-Based Structural Coloration by Electrohydrodynamic Jet Printing of Transparent Polyethylene Glycol Microdomes. 通过电流体动力喷射打印透明聚乙二醇微域实现基于全内反射的高分辨率结构着色。

IF 5.1

ACS Macro Letters Pub Date : 2024-12-17 Epub Date: 2024-11-14 DOI: 10.1021/acsmacrolett.4c00512

Dongho Lee, Doyoung Byun, Dae-Hyun Cho

引用次数: 0

Injectable Self-Healing and Anti-Dissolving Low-Molecular-Weight Hydrogels Enabled by Ionic Cross-Linking for Cell Encapsulation

IF 5.8

ACS Macro Letters Pub Date : 2024-12-17 DOI: 10.1021/acsmacrolett.4c00725

Jiahao Zhang, Kaiyu Jin, Yifei Feng, Da Lu, Mai Chen, Hucheng Wang, Cheng Jin, Dengyu Wang, Zhiling Li, Yiming Wang

{"title":"Injectable Self-Healing and Anti-Dissolving Low-Molecular-Weight Hydrogels Enabled by Ionic Cross-Linking for Cell Encapsulation","authors":"Jiahao Zhang, Kaiyu Jin, Yifei Feng, Da Lu, Mai Chen, Hucheng Wang, Cheng Jin, Dengyu Wang, Zhiling Li, Yiming Wang","doi":"10.1021/acsmacrolett.4c00725","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00725","url":null,"abstract":"Injectable behavior is often observed in polymer-based hydrogels yet is rarely achieved in low-molecular-weight hydrogels (LMWHs), the realization of which may boost the development of new soft materials for biomedical applications. Here, we report on injectable self-healing and antidissolving LMWHs that are formed through a simple ionic cross-linking strategy, showing a fundamental application for the encapsulation of living cells. The LMWHs are formed by simply mixing Ca2+ with negatively charged supramolecular polymers. Surprisingly, the resultant hydrogels are capable of rapidly self-healing within seconds after damage, showing an unexpected injectable function. When the hydrogel is injected into an aqueous medium, continuous macroscopic hydrogel fibers can be produced. Interestingly, the hydrogel can remain intact in the aqueous medium, showing impressive antidissolving behavior which is less observed in other LMWHs. Furthermore, the hydrogel is demonstrated to be nontoxic and can be used as a cytocompatible scaffold for living cells. This work may open an avenue toward injectable and antidissolving LMWHs for the ever-expanding list of applications in biotherapy and bioprinting.","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":"78 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142840902","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

Mechanochemical Release of 9,10-Diphenylanthracene via Flex-Activation of Its 1,4-Diels–Alder Adduct

IF 5.8

ACS Macro Letters Pub Date : 2024-12-16 DOI: 10.1021/acsmacrolett.4c00766

Hui Hu, Lvjiang Meng, Yang Zhou, Yujing Chen, Yecheng Zhou, Bin Xi, Yuanchao Li

引用次数: 0

Impact of Guest Orientation in Host–Guest Supramolecular Hydrogels

IF 5.8

ACS Macro Letters Pub Date : 2024-12-13 DOI: 10.1021/acsmacrolett.4c00531

Christopher J. Addonizio, Adam S. Braegelman, Connor R. Schmidt, Rachel C. Ollier, Akwasi Ansah Antwi, Bo Su, Mohsen Farshad, Jonathan K. Whitmer, Matthew J. Webber

引用次数: 0

Influence of Polymer Architecture on the Structure of Complex Coacervate Core Micelles: AB + AC versus AB + C Systems

IF 5.8

ACS Macro Letters Pub Date : 2024-12-12 DOI: 10.1021/acsmacrolett.4c00679

Moon-Chul Ryu, Soo-Hyung Choi

引用次数: 0

Correction to “Cross-Linked Polyolefins through Tandem ROMP/Hydrogenation”

IF 5.8

ACS Macro Letters Pub Date : 2024-12-09 DOI: 10.1021/acsmacrolett.4c00775

Caitlin S. Sample, Brenden D. Hoehn, Marc A. Hillmyer

引用次数: 0

Direct Monomer Recovery from Ring-Closing Depolymerization of Thermosets

IF 5.1

ACS Macro Letters Pub Date : 2024-12-07 DOI: 10.1021/acsmacrolett.4c0066510.1021/acsmacrolett.4c00665

Chihui Zheng, Gadi Slor, Youwei Ma* and Francesco Stellacci*,

{"title":"Direct Monomer Recovery from Ring-Closing Depolymerization of Thermosets","authors":"Chihui Zheng, Gadi Slor, Youwei Ma* and Francesco Stellacci*, ","doi":"10.1021/acsmacrolett.4c0066510.1021/acsmacrolett.4c00665","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00665https://doi.org/10.1021/acsmacrolett.4c00665","url":null,"abstract":"Recovering monomers from the depolymerization of thermosets presents a significant challenge, which becomes even more daunting if one sets the goal of doing it directly, i.e., without complex chemical separation steps. To this end, we have synthesized a new type of polycarbonate thermoset by first copolymerizing alkyl cyclic carbonates (ACCs) with small amounts of allyloxy cyclic carbonates (AoCCs), followed by cross-linking the resulting allyloxy polycarbonate with excess tetrathiol compounds under UV irradiation. These cross-linked polycarbonates demonstrate enhanced thermal and mechanical properties compared to their linear analogues, while maintaining the linear polymers’ capacity for ring-closing depolymerization. The depolymerization process enables the direct recovery of ACC and its dimer, bypassing complex chemical separation steps that are commonly employed in the recycling of conventional chemically recyclable thermosets. The yields range from 74.7% to 91.7% depending on the ratios of AoCC to ACC in the thermosets. Furthermore, the recovered compounds can be repolymerized with AoCCs leading to polycarbonate of the same quality to the initially synthesized one.","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":"13 12","pages":"1704–1710 1704–1710"},"PeriodicalIF":5.1,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmacrolett.4c00665","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Direct Monomer Recovery from Ring-Closing Depolymerization of Thermosets

IF 5.8

ACS Macro Letters Pub Date : 2024-12-07 DOI: 10.1021/acsmacrolett.4c00665

Chihui Zheng, Gadi Slor, Youwei Ma, Francesco Stellacci

{"title":"Direct Monomer Recovery from Ring-Closing Depolymerization of Thermosets","authors":"Chihui Zheng, Gadi Slor, Youwei Ma, Francesco Stellacci","doi":"10.1021/acsmacrolett.4c00665","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00665","url":null,"abstract":"Recovering monomers from the depolymerization of thermosets presents a significant challenge, which becomes even more daunting if one sets the goal of doing it directly, i.e., without complex chemical separation steps. To this end, we have synthesized a new type of polycarbonate thermoset by first copolymerizing alkyl cyclic carbonates (ACCs) with small amounts of allyloxy cyclic carbonates (AoCCs), followed by cross-linking the resulting allyloxy polycarbonate with excess tetrathiol compounds under UV irradiation. These cross-linked polycarbonates demonstrate enhanced thermal and mechanical properties compared to their linear analogues, while maintaining the linear polymers’ capacity for ring-closing depolymerization. The depolymerization process enables the direct recovery of ACC and its dimer, bypassing complex chemical separation steps that are commonly employed in the recycling of conventional chemically recyclable thermosets. The yields range from 74.7% to 91.7% depending on the ratios of AoCC to ACC in the thermosets. Furthermore, the recovered compounds can be repolymerized with AoCCs leading to polycarbonate of the same quality to the initially synthesized one.","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":"220 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142788623","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

Highly Ordered Bimodal Mesoporous Carbon from ABC Triblock Terpolymers with Phenolic Resol

IF 5.8

ACS Macro Letters Pub Date : 2024-12-05 DOI: 10.1021/acsmacrolett.4c00651

Yuta Miyamori, Youngwon Kong, Yuta Nabae, Kan Hatakeyama-Sato, Teruaki Hayakawa

引用次数: 0

Highly Ordered Bimodal Mesoporous Carbon from ABC Triblock Terpolymers with Phenolic Resol

IF 5.1

ACS Macro Letters Pub Date : 2024-12-05 DOI: 10.1021/acsmacrolett.4c0065110.1021/acsmacrolett.4c00651

Yuta Miyamori, Youngwon Kong, Yuta Nabae, Kan Hatakeyama-Sato and Teruaki Hayakawa*,

{"title":"Highly Ordered Bimodal Mesoporous Carbon from ABC Triblock Terpolymers with Phenolic Resol","authors":"Yuta Miyamori, Youngwon Kong, Yuta Nabae, Kan Hatakeyama-Sato and Teruaki Hayakawa*, ","doi":"10.1021/acsmacrolett.4c0065110.1021/acsmacrolett.4c00651","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00651https://doi.org/10.1021/acsmacrolett.4c00651","url":null,"abstract":"Mesoporous carbons (MPCs) with a bimodal distribution of pore diameters are more advantageous than their monomodal counterparts for applications in adsorption, catalysis, and drug delivery systems; however, reports on their fabrication remain limited. In this study, we successfully fabricated bimodal MPCs using a soft template method with poly(2,2,2-trifluoroethyl methacrylate) (PTFEMA)-b-poly(4-vinylpyridine) (P4VP)-b-polystyrene (PS) and resol. The blend samples formed microphase-separated structures comprising PTFEMA spheres, PS cylinders, and matrix domains composed of P4VP and resol, leading to the separation of the PTFEMA and PS domains. The P4VP and resol matrix domains were carbonized at a high temperature of 900 °C, whereas the PTFEMA and PS domains were thermally decomposed. This process resulted in bimodal MPCs with both spherical and cylindrical mesopores. The pore diameters calculated using scanning electron microscopy were approximately 10 and 30 nm, while nitrogen adsorption measurements indicated a large specific surface area with a bimodal pore distribution.","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":"13 12","pages":"1698–1703 1698–1703"},"PeriodicalIF":5.1,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmacrolett.4c00651","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0