Intrinsically Viscoelastic Supramolecular Conjugated Polymer toward Suppressing Coffee-Ring Effect

作     者：Yamin Han Lubing Bai Xiang An Man Xu Chuanxin Wei Zongqiong Lin Mengna Yu Jinyi Lin Lili Sun Ning Sun Changting Wei Linghai Xie Xuehua Ding Qi Wei Chengrong Yin Chenghui Li Wenming Su Wei Huang 

作者机构：Key Laboratory of Flexible Electronics(KLOFE)Institute of Advanced Materials(IAM)Nanjing Tech University(NanjingTech)Nanjing 211816 Frontiers Science Center for Flexible Electronics(FSCFE)Shaanxi Institute of Flexible Electronics(SIFE)Shaanxi Institute of Biomedical Materials and Engineering(SIBME)Northwestern Polytechnical University(NPU)Xi’an 710072 State Key Laboratory of Organic Electronics and Information DisplaysInstitute of Advanced Materials(IAM)Nanjing University of Posts&TelecommunicationsNanjing 210023 State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresNanjing UniversityNanjing 210093 Printable Electronics Research CenterSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhouJiangsu 215123 

出 版 物：《CCS Chemistry》 (中国化学会会刊（英文）)

年 卷 期：2022年第4卷第11期

页      面：3529-3539页

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：The work was supported by the National Natural Science Foundation of China(nos.22075136 and 61874053) National Key Research and Development Program of China(no.2020YFA0709900) Natural Science Funds of the Education Committee of Jiangsu Province(no.18KJA430009) Natural Science Foundation of Jiangsu Province(no.BK20200700) “High-Level Talents in Six Industries”of Jiangsu Province(no.XYDXX-019) China Postdoctoral Science Foundation(no.2021M692623) the Open Research Fund from State Key Laboratory of Supramolecular Structure and Materials(no.sklssm202108) Anhui Province Key Laboratory of Environment-friendly Polymer Materials and Anhui Province Key Laboratory of Optoelectronic Materials Science and Technology,Research Innovation in University of Jiangsu Province(nos.KYCX21_0771,KYCX21_0772,and KYCX21_1097) 

主　　题：coffee-ring effect rigid conjugated polymer supramolecular criss-cross nanofibers optoelectronic properties 

摘      要：The rational molecular design of light-emitting conjugated polymers that inherently suppress the ubiquitous coffee-ring effect(CRE)is a great challenge and the critical bottleneck for printing ***,we describe a supramolecular route to construct an intrinsically viscoelastic rigid conjugated polymer(RCP)(PHDPF-Cz)toward avoiding the CRE without sacrificing optoelectronic ***π-πstacking interactions derived fromthe pendant carbazole(Cz)units enable PHDPF-Cz to self-assemble into criss-cross nanofibers and endow its solutionwith great ***,a high-quality and continuous PHDPFCz film was obtained by impeding the transport of aggregates to the droplet edge due to outward capillary flow during evaporation,in sharp contrast to the random aggregate migration and rapid precipitation generated fromthe controlled poly[4-(6-(9H-diphenylaniline-9-yl)hexyloxy)-9,9-diphenylfluorene]-co-[5-(6-(9H-diphenylaniline-9-yl)hexyloxy)-9,9-diphenylfluorene]and poly(9,9-dioctylfluorene)***,an efficient random laser is also achieved based on these cross-linked films with ultrastable single-chain excitonic behavior,confirming the effectiveness of our design strategy.