影像科学与光化学 ›› 1991, Vol. 9 ›› Issue (1): 29-35.DOI: 10.7517/j.issn.1674-0475.1991.01.29

• 研究论文 • 上一篇    下一篇

有机化合物的光物理研究 ⅩⅢ.β-萘甲酸十六碳酯在L-B膜中基态二聚体及激基缔合物形成的研究

马晓东1, 朱自强1, 陈凤启2, 佟振合2, 樊美公2   

  1. 1. 河南大学物理系, 开封 475001;
    2. 中国科学院感光化学研究所, 北京100101
  • 收稿日期:1989-04-10 修回日期:1990-06-12 出版日期:1991-02-20 发布日期:1991-02-20
  • 通讯作者: 樊美公
  • 基金资助:
    国家自然科学基金

PHOTOPHYSICS STUDIES OF ORGANIC COMPOUNDS Ⅷ. INVESTIGATION ON THE GROUND STATE DIMER AND EXCIMER FORMATION OF CETYL β-NAPHTHOATE IN L-B FILMS

MA XIAO-DONG1, ZHU ZHI-QANG1, CHEN FENG-QI2, TUNG ZHEN-HO2, FAN MEI-GONG2   

  1. 1. Department of Physics, Henan University, Kaifeng 475001, P.R. China;
    2. Institute of Photographic Chemistry, Academia Sinica, Beijing 100101, P.R. China
  • Received:1989-04-10 Revised:1990-06-12 Online:1991-02-20 Published:1991-02-20

摘要: 制备了β-萘甲酸十六碳酯的L-B膜。分别用Y型、Z型,以及含有硬脂酸的β-萘甲酸十六碳酯与单纯硬脂酸间隔挂法,将分子膜转移至石英载片上,研究了β-萘甲酸十六碳酯分子膜吸收以及荧光光谱。并与溶液和固态中的荧光光谱作了比较。在氯仿溶液以及在固态,β-萘甲酸十六碳酯只呈现其单体的荧光。然而,在L-B膜中,除了观察到单体的荧光外,还观察到了激发态二聚体以及激基缔合物发射的荧光。通过对β-萘甲酸十六碳酯分子膜进行热和水处理后,发现L-B膜中亲水层的介质环境有所改变,从而造成亲水层中的亲水基团的某些物理和化学性质的改变。根据实验事实,提出了β-萘甲酸十六碳酯二聚体和激基缔合物在L-B膜中形成的机制。

关键词: β-萘甲酸十六碳酯, L-B膜, 二聚体, 激基缔合物

Abstract: The different types of cetyl β-naphthoate (NACE) molecule films were prepared by the Langmuir-Blodgett technique. The absorption and fluorescence spectra of the films were investigated. In chloroform solution and solid state of NACE monomer fluorescence was observed. The fluorescence of excimer and excited dimer of NACE were also observed, besides the monomer fluorescence, in L-B films. It was found that the environment of the hydrophilic region in L-B films is changed when the films are processed with heat and water. This makes that the chemical and physical properties of hydrophilic groups in hydrophilic region were changed. The formation mechanism of the ground state dimer and excimer of NACE in L-B films was supposed.

Key words: Cetyl β-naphthoat, L-B Film, Dimer, Excimer, Photophysics