Title
Impact of the position of the imine linker on the optoelectronic performance of π-conjugated organic frameworks
Author
Samrat Ghosh, Yusuke Tsutsui, Katsuaki Suzuki, Hironori Kaji, Kayako Honjo, Takashi Uemur, Shu Seki
Year
2018
Journal
Molecular Systems Design & Engineering
Abstract
Conjugated organic frameworks are an interesting class of functional porous organic materials having a π-conjugated backbone with permanent porosity. These materials are potential candidates for optoelectronic applications. Although there are several reports on the structure–property relationship between π-conjugated building blocks and optoelectronic performance, the influence of the linker position is hitherto unknown. We report two novel imine-linked 2D π-conjugated polymers which are positional isomers of each other consisting of pyrene and anthracene units. The polymers exhibited similar optical and electronic properties under ambient conditions. Upon I2doping, one of the isomers exhibited high radical density and enhanced conductivity due to energetically favoured chemical oxidation. The linker position dramatically affects the optoelectronic performance of these polymers even though they have the same π-conjugated backbone.
Instrument
FP-8500, V-730
Keywords
Fluorescence, Optical properties, Solid state, Band gap, Polymers, Materials