Kinetically Controlled Supramolecular Block Copolymer Self-Assembly:Multicolor Photonic Crystal Patterns from a Single Formulation  

作　　者：Shuai Deng Renhua Deng Xi Mao Bijin Xiong Mian Wang Senbin Chen Wolfgang H.Binder Jintao Zhu Zhenzhong Yang 

机构地区：[1]State Key Laboratory of Materials Processing and Die&Mould Technology,Key Laboratory of Materials Chemistry for Energy Conversion and Storage(Ministry of Education),School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan 430074 [2]Chair of Macromolecular Chemistry,Faculty of Natural Science II(Chemistry,Physics,and Mathematics),Martin Luther University Halle-Wittenberg,Halle(Saale) [3]Department of Chemical Engineering,Tsinghua University,Beijing 100084

出　　处：《CCS Chemistry》2023年第10期2301-2311,共11页中国化学会会刊(英文)

基　　金：the National Natural Science Foundation of China(grant nos.52003094 and 51933005);the Fundamental Research Funds for the Central Universities(grant no.2020kfyXJJS011).

摘　　要：Photonic crystal(PC)patterns with tunable and changeable nonvolatile structural colors printed from a single ink are of great interest for optical products but have rarely been reported because most inks can only output one respective structural color.Herein,we propose a facile yet effective kinetically controlled self-assembly strategy to address this challenge.An ink formulation containing supramolecular block copolymers(SBCPs)is developed.SBCP patterns were printed by direct-ink-writing followed by solvent annealing to generate different structural colors by simply controlling the annealing time.The self-assembly kinetic regime suggests that different colors result from various kinetically trapped metastable states.In turn,the variation in structural color enables“visualization”of the self-assembly dynamics.Furthermore,we demonstrate that these kinetically trapped structures exhibit different responsive color-change behaviors.In addition,this kinetic control strategy can be synergistic with thermodynamic control to extend the color range.This study provides a facile yet effective solution for well-designed PC patterns with tunable,responsive,and unfading colors printed from the simplest single-nozzle printer with a single colorless ink,presenting great potential in broad applications,including information storage,encryption,and anti-fake.

关 键 词：block copolymers SELF-ASSEMBLY SUPRAMOLECULES photonic crystals direct write printing kinetics 

分 类 号：O63[理学—高分子化学]