Studies on Charge Transfer of Polyimide Rings

Abstract

Abstract: Charge distributions, dipole monents and transition energies for model compounds of polyimide structure units in ground state and excited state were studied by ab initio calculation. Fluorescence spectra of polyimides were determined and differences of forming charge-transfer complex between two polyimides in excited state were explored. The results showed that large charge transfer occurred on the imide rings consisting of 1,4-diaminobenzene and 4,4′-diaminotriphenylamine in ground state but further charge transfer occurred on the imide ring consisting of 4,4′-diaminotriphenylamine in excited state .

Key words: Polyimide, Ab initio, Charge distribution, Dipole moment, Charge-transfer complex

CLC Number:

O633.22

TrendMD:

BAI Xu-Duo, ZHANG Zhi-Qian, FENG Ji-Kang, XIE Gang, CHEN Jiu-Shun. Studies on Charge Transfer of Polyimide Rings[J]. Chem. J. Chinese Universities, 2000, 21(9): 1455.

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Studies on Charge Transfer of Polyimide Rings

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