文献类型：期刊文献

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

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

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China;[2]Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Sch Chem & Mat Sci, Hangzhou 310024, Peoples R China;[3]Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Fluorine & Nitrogen Chem & Adv Mat, Shanghai 200032, Peoples R China

年份：2024

卷号：67

期号：7

起止页码：2341

外文期刊名：SCIENCE CHINA-CHEMISTRY

收录：;EI(收录号：20242516266768);WOS:【SCI-EXPANDED(收录号:WOS:001248299000001)】；

基金：This work was 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) and the Shanghai Rising-Star Program (23QA1402500). The authors thank Dr. Kun Cui for his assistance in TEM measurements.

语种：英文

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

摘要：Living crystallization-driven self-assembly (CDSA) provides robust access to uniform pi-conjugated nanostructures (CNSs) from block copolymers (BCPs) containing a crystalline pi-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) (OPE9-b-PMTPA(35) and OPE9-b-PMTPA(58); the subscript represents the number of repeat unit of each block) consisting of a crystalline pi-conjugated core-forming OPE9 segment and a corona-forming PMTPA block are synthesized. By efficient "click-type" alkylation of methylthio groups, OPE9-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 of pi-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.