文献类型：期刊文献

中文题名：Combination of methylthio-chemistry with living crystallization-driven self-assembly toward uniformπ-conjugated nanostructures with antibacterial activity,surface tailorability,tunable morphology and dimension

作者：Chuyu Duan[1,3];Binbin Xu[1];Ruru Li[2,3];Xiaoyu Huang[2,3];Shaoliang Lin[1];Chun Feng[1]

机构：[1]Shanghai Key Laboratory of Advanced Polymeric Materials,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China;[2]School of Chemistry and Materials Science,Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310024,China;[3]Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials,Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,Shanghai 200032,China

年份：2024

卷号：67

期号：7

起止页码：2341

中文期刊名：Science China Chemistry

外文期刊名：中国科学（化学英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2023_2024】；PubMed;

基金：supported by the National Natural Science Foundation of China(52122314,U22A20131,52273008,52361165657);the Strategic Priority Research Program of Chinese Academy of Sciences(XDB0590000);the Shanghai Scientific and Technological Innovation Project(21520780100,21ZR1481700,22ZR1479300,22JC1401000,22ZR1475400);the Shanghai Rising-Star Program(23QA1402500)。

语种：英文

中文关键词：crystallization-driven self-assembly;block copolymer;π-conjugated nanostructure;methylthio-chemistry

摘要：Living crystallization-driven self-assembly(CDSA)provides robust access to uniformπ-conjugated nanostructures(CNSs)from block copolymers(BCPs)containing a crystallineπ-conjugated segment with controlled dimension,morphology and composition,which show appealing applications in biomedicine,photocatalysis and microelectronics.To further expand the application spectrum of these CNSs,the development of facile strategies toward diverse CNSs with varying structures/functionalities is highly desired.Herein,BCPs consisting of oligo(p-phenylene ethynylene)-b-poly(polypropyl-3-methanethiol acrylate)(OPE_(9)-bPMTPA35and OPE_(9)-b-PMTPA_(58);the subscript represents the number of repeat unit of each block)consisting of a crystallineπ-conjugated core-forming OPE_(9)segment and a corona-forming PMTPA block are synthesized.By efficient“click-type”alkylation of methylthio groups,OPE_(9)-b-PMTPA with varying contents of sulfonium unit is obtained.Uniform ribbon-like micelles with different widths and lengths can then be generated in a controlled manner via the self-seeding approach of living CDSA.Additionally,negatively charged polymeric and Ag nanoparticles can be immobilized on sulfonium/methylthio-containing shells by taking advantage of electrostatic attraction and coordination interaction,respectively.Interestingly,the ribbon-like micelles with positively charged shells exhibit antibacterial activity against E.coli.Given the ease of modification of PMTPA-based shell and attractive opto-electronic/photocatalytic properties ofπ-conjugated units,the combination of methylthio-chemistry and living CDSA opens a new avenue to generate multi-functional CNSs for widespread applications from biomedicine to photocatalysis.