羟基卟啉衍生物LB膜的紫外可见光谱表征  

UV Vis Spectroscopic Characterization of LB Films of Hydroxyl Substituted Porphyrin Derivatives

作　　者：黄涛[1,2,3] 王永强[1,2,3] 田永驰 梁映秋 

机构地区：[1]武汉化工学院化工系 [2]吉林大学理论化学研究所 [3]南京大学化学系

出　　处：《光谱学与光谱分析》1999年第1期35-37,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金

摘　　要：研究了两种具有两条脂链的羟基卟啉在气液界面上的成膜性能及其ＬＢ膜。ＵＶ－Ｖｉｓ光谱表明，两种卟啉在ＬＢ膜中的聚集态不同，卟啉环上脂链和羟基呈对称取代时形成Ｊ－聚体，呈同侧取代时形成氢键聚集体。利用偏振ＵＶ－Ｖｉｓ吸收谱测定了ＬＢ膜中卟啉环的取向。结果表明，侧链和羟基的相对位置对环的取向没有影响，但影响膜中平均分子截面积的大小和环间的距离，因而影响膜中分子的聚集态。The LB films forming properties of two hydroxyl substituted porphyrins with double hexadecyl chains have been characterized.UV Vis spectra show that the two porphyrins possess various aggregation behaviors in LB films.The porphyrin with symmetrically attached chains tend to form J aggregate and the other asymmetric porphyrin can form hydrogen bonded aggregate in LB films.The orientation of porphyrin rings was examined by polarized UV Vis spectra.The results indicate that the situation of side chain attached on porphyrin ring has no influence on porphyrin ring orientation,but has great influence on mean molecular areas or the distanses between porphyrin rings,and so as to affect the aggregation behaviors of porphyrin in LB films.

关 键 词：LB膜 紫外可见光谱 卟啉类化合物 羟基卟啉 

分 类 号：O626.13[理学—有机化学]