混合溶剂对可录型光盘中吲哚类菁染料薄膜性能的影响

THE INFLUENCE OF MIXED SOLVENTS ON THE PROPERTIES OF INDOLECYANINE DYE FILM IN COMPACT DISC-RECORDABLE

本文采用紫外可见光谱、FT IR及AFM等手段,研究了混合溶剂对光盘记录介质吲哚类菁染料薄膜光学性能、稳定性和表面结构的影响.发现在不同混合溶剂下涂出的相同膜厚的染料薄膜,其光学性能和表面形貌都有很大的差异.不同的混合溶剂都存在一个最佳混合体积比,染料在此体积比下旋涂出膜的光学性能和表面形貌均优于单一溶剂下涂出的膜.对比不同混合溶剂涂出的膜的光学性质及AFM的观测结果,发现二丙酮醇与氯仿在等体积比混合、四氟丙醇与氯仿在7∶3体积下混合时效果最好,易得到反射率高,表面较平整的染料薄膜.

In this paper,a cyanine dye as recording materials was spincoated with different mixed solvents onto glass substrate to form thin films.The effect of mixed solvents on the optical properties,stability and surface topographies of the films were studied by means of VisNIR spectra of absorption and reflection of the films,FTIR spectra,AFM methods and so on.It was found that the mixed solvents could greatly affect the optical properties and surface topographies of dye films,and the best mixture volume ratio between two solvents exsits,dye films fabricated with mixed solvent in such ratio show higher quality optical properties and more flatter morphologies than those with pure solvent,respectively.Results of Atomic Force Microscopy(AFM)observations and optical properties measurements indicate that the best mixture volume ratio for diacetone alcohol and chloroform mixed solvent is 5∶5,while for the mixed solvent of tetrafluoropropanol and chloroform is 7∶3.