【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。更多还原

【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.更多还原