双链和三链四苯酚基钴卟啉L－B膜结构的光谱表征

UV-vis Absorption and FTIR Spectra of Langmiur-Boldgett Films of the Cobalt Tetrahydroxyphenylporhrins Containing Double-and Tri-methylene Chain

讨论了双链和三链四苯酚基钴卟啉分子在气液界面π－Ａ曲线，及转移石英或氟化钙基片上多层Ｌａｎｇｍｕｉｒ－Ｂｌｏｄｇｅｔｔ（Ｌ－Ｂ）膜的ＵＶ吸收光谱和红外光谱，由卟琳环吸收的ｓｏｒｅｔ带和Ｑ带的位移，分析了Ｌ－Ｂ膜中钴卟琳分子的聚集状态；根据ＦＴＩＲ光谱对脂链构象敏感的ＣＨ＿２对称和反对称伸缩振动谱带，分析了脂链以全反式Ｚｉｇｚａｇ构象形式存在，这是卟啉环Ｊ聚体诱导的结果。

The UV-visabsorption and FTIR spectra were measured of the Langmiur-Blodgett(L-B)fioms of the cobalt tetrahydroxyphenylporphyrinscontaining double-and tri-hydrocarbon chain.It was pointed that the formation of J-assembly in the L-B films leads to a red shift of the soret bandinthe UV-vis absorption spectra relative to tha of chloroform solutions, The symmetric and asymmetricCH_2 stretching bands appeared at 2 849 adn 2 918 cm￣(-1) demonstrated that the methylene chains of thecobalt prophyrin are in all-trans conformation,which is the result of the considerable interaction be-tween the molecules.