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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。
L-B films of cetyl naphthoate were prepared. Respectively, with Y-type, Z-type, and stearic acid-containing beta-naphthoic acid naphthalene and stearic acid interval hanging method, the molecular film transferred to the quartz slide, the study of β-naphthoic acid hexadecyl ester Molecular film absorption and fluorescence spectroscopy. And compared with the fluorescence spectra in solution and in solid state. In chloroform solution as well as in the solid state, β-naphthoic acid hexadecyl ester only shows the fluorescence of its monomer. However, in the L-B film, in addition to the fluorescence of the monomer observed, the excited-state dimer and the fluorescence emitted by the excimer were also observed. By heat and water treatment of the β-naphthoic acid hexadecyl ester molecular film, it was found that the physical environment of the hydrophilic layer in the LB film was changed to cause some physical and chemical changes in the hydrophilic groups in the hydrophilic layer Changes in nature. Based on the experimental facts, the mechanism of the formation of cetyl naphthoate dimers and excimer in L-B films has been proposed.