摘要
A diamine monomer(4,4’-(((5,11-dihydroindolo[3,2-b]carbazole-6,12-diyl)bis(4,l-phenyl-ene))bis(oxy))dianiline)containing a rigid conjugated indolocarbazole was designed and synthesized through a three-step reaction.A series of high-performance functional polyimides were prepared through simple condensation polymerization of the monomer with different industrial dianhydrides 6FDA,BTDA and ODPA,respectively,which exhibit superior thermal stability,good solubility in polar organic solvents and good mechanical properties.The glass transition temperature(T_(g))is above 334℃,and the 5%weight loss temperature(T_(d5%))of polyimides under nitrogen atmosphere falls in the range of 502〜526℃.The tensile strength and tensile modulus are 49.45~60.08 MPa and 1.4-1.6 GPa,respectively.In addition,the maximum fluorescence emission wavelength of polyimides in the NMP solution(0.02 mg/mL)are around 448 nm with blue light emission and 451 nm as film without significant red shift,which indicates the prepared polyimides process a certain application potential in high-performance flexible polymer optoelectronic devices.
作者
WANG Ting
SU Yu-Miao
CHEN Feng
LI Wen-Mu
王婷;苏玉苗;陈峰;李文木(Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;University of Chinese Academy of Sciences,Beijing 100049,China;Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry,Fujian Province University Key Laboratory of Green Energy and Environment Catalysis,College of Chemistry and Materials,Ningde Normal University,Ningde 352100,China;Innovation Academy for Green Manufacture,Chinese Academy of Sciences,Beijing 100190,China)
基金
This research was supported by Innovation Academy for Green Manufacture.Chinese Academy of Sciences(IAGM2020C22)
the Guiding Project of Fujian Province Science and Technology Department(2020H0050)。
