The ionization potential (IP), electron affinity (EA) and energy gap (Eg) of polyimide are estimated from molecular orbital (MO) computations using the AM1 method on model compounds. Their computed values are 8.5, 1.4 and 7.1 eV, respectively. Interestingly, it was found that the EA of polyimide is comparable to that of N-phenylphthalimide.
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Sherif A. Kafafi (1990) studied this question.
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