高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (9): 1455.

• 论文 • 上一篇    下一篇

聚酰亚胺的电荷转移研究

白续铎1, 张志谦1, 封继康2, 谢刚3, 陈九顺3   

  1. 1. 哈尔滨工业大学应用化学系, 哈尔滨 150006;
    2. 吉林大学理论化学计算国家重点实验室, 长春 130023;
    3. 黑龙江大学化学系, 哈尔滨 150080
  • 收稿日期:2000-02-22 出版日期:2000-09-24 发布日期:2000-09-24
  • 通讯作者: 白续铎(1953年出生),男,博士,副教授,主要从事功能高分子材料研究.
  • 基金资助:

    国家自然科学基金(批准号:59833110)资助

Studies on Charge Transfer of Polyimide Rings

BAI Xu-Duo1, ZHANG Zhi-Qian1, FENG Ji-Kang2, XIE Gang3, CHEN Jiu-Shun3   

  1. 1. Applied Chemistry Depa rtment, Harbin Instituteof Technology, Harbin 150006, China;
    2. State Key Lab.of Theoretical Chemical Calculation, Jilin University, Changchun 130023, China;
    3. Department of Chemistry, Heilongjiang University, Harbin 150080, China
  • Received:2000-02-22 Online:2000-09-24 Published:2000-09-24

摘要: 用量子化学从头计算方法,选用模型化合物对二种不同聚酰亚胺结构单元的基态和激发态的电荷分布、偶极矩和跃迁能进行了研究,并通过对聚酰亚胺荧光光谱的测定,探讨了二种聚酰亚胺形成电荷转移络合物的差异.结果表明,二种酰亚胺环在基态时均已发生了较大的电荷转移,但在激发态,只有4,4′-二氨三苯胺构成的酰亚胺环才发生进一步的电荷转移.

关键词: 聚酰亚胺, 量子化学从头计算法, 电荷分布, 偶极矩, 电荷转移络合物

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

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