Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM),Nanjing Tech University(NanjingTech),Nanjing 211816,China;
State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM),Nanjing University of Posts&Telecommunications,Nanjing 210023,China;
Frontiers Science Center for Flexible Electronics(FSCFE),MIIT Key Laboratory of Flexible Electronics(KLoFE),Northwestern Polytechnical University,Xi'an 710072,China;
Electrical Engineering College,Nanjing Vocational University of Industry Technology,Nanjing 210023,China;
Side-chain coupling; Small molecular emitter; Morphological stability; Deep-blue emission; Optoelectronic device;