5,10,15,20-四-(4-N,N,N-二甲基十六烷基氨基苯基)卟啉LB膜结构的研究

STUDY ON THE STRUCTURE OF 5,10,15,20 TETRA (4 N,N,N DIMETHYLHEXADECYLA MINOPHENYL) PORPHYRIN LB FILM

研究了两亲性卟啉５，１０，１５，２０－四－（４－Ｎ，Ｎ，Ｎ－二甲基十六烷基氨基苯基）卟啉（ＴＤＭＣ１６ＰＰ）在气／液界面上的成膜性能，制备了其多层ＬＢ膜．用ＵＶ－Ｖｉｓ吸收光谱、荧光光谱、偏振ＵＶ－Ｖｉｓ吸收光谱和小角Ｘ射线衍射对ＬＢ膜进行了测试表征．结果表明：两亲性卟啉ＴＤＭＣ１６ＰＰ具有良好的成膜性能，其ＬＢ膜性质稳定，有较好的结构均匀性和周期性．在ＬＢ膜内，脂肪链并不是直立的，卟啉大环平面与基片平面成４２．５°排列．

The film forming properties of 5,10,15,20 tetra (4 N,N,N dimethylhexadecyl aminophenyl) porphyrin (TDMC 16 PP) on the air/water interface was studied. Multilayers of amphiphilic porphyrin were built up on the glass and quartz substrate. The structure of LB films was characterized by UV Vis absorption spectra, polarized UV Vis absorption spectra, fluorescence spectra, and low angle X ray diffraction (LAXD). The experimental results indicated that TDMC 16 PP has good film forming performance, TDMC 16 PP LB films have good stability, homogeneity, and periodicity, the long alkyl chains are not straight and the porphyrin macroring in LB films lay on the substrate with a tilted angle 42.5°.