化学学报
化學學報
화학학보
ACTA CHIMICA SINICA
2001年
2期
158-162
,共5页
刘洪国%杨孔章%钱东金%薛庆斌%冯绪胜
劉洪國%楊孔章%錢東金%薛慶斌%馮緒勝
류홍국%양공장%전동금%설경빈%풍서성
卟啉%单层膜%取向
卟啉%單層膜%取嚮
계람%단층막%취향
四羧酸对称取代的卟啉衍生物5,10,15,20-tetra-4-oxy(acetic acid)phenyl porphyrin(TAPP)及其与二甲基二(十六烷基)溴化铵(DMDHA)所形成的复合物在空气/水溶液界面上可形成稳定的单层膜.利用π-A等温线、UV-vis光谱及偏振光谱对单层膜的结构作了研究.结果表明,纯TAPP的单层膜中,卟啉环间有强的相互作用,其间距约为0.55 nm;1:1(摩尔比)的复合物单层膜中,环间距离与纯TAPP相比无明显变化,但聚集体间距离增加了;而1:4的复合物单层膜中,环与环间的相互作用减弱,环间距离及聚集体间的距离均明显增加.
四羧痠對稱取代的卟啉衍生物5,10,15,20-tetra-4-oxy(acetic acid)phenyl porphyrin(TAPP)及其與二甲基二(十六烷基)溴化銨(DMDHA)所形成的複閤物在空氣/水溶液界麵上可形成穩定的單層膜.利用π-A等溫線、UV-vis光譜及偏振光譜對單層膜的結構作瞭研究.結果錶明,純TAPP的單層膜中,卟啉環間有彊的相互作用,其間距約為0.55 nm;1:1(摩爾比)的複閤物單層膜中,環間距離與純TAPP相比無明顯變化,但聚集體間距離增加瞭;而1:4的複閤物單層膜中,環與環間的相互作用減弱,環間距離及聚集體間的距離均明顯增加.
사최산대칭취대적계람연생물5,10,15,20-tetra-4-oxy(acetic acid)phenyl porphyrin(TAPP)급기여이갑기이(십륙완기)추화안(DMDHA)소형성적복합물재공기/수용액계면상가형성은정적단층막.이용π-A등온선、UV-vis광보급편진광보대단층막적결구작료연구.결과표명,순TAPP적단층막중,계람배간유강적상호작용,기간거약위0.55 nm;1:1(마이비)적복합물단층막중,배간거리여순TAPP상비무명현변화,단취집체간거리증가료;이1:4적복합물단층막중,배여배간적상호작용감약,배간거리급취집체간적거리균명현증가.
Monolayers of 5,10,15,20-tetra-4-oxy(acetic acid)phenyl porphyrin (TAPP) and TAPP/Dimethyldihexadecylammonium bromide (DMDHA) (molar ratio: 1: 1, 1:4) at the air/liquid interface and onquartz plates have been studied by using π-A isotherms, UV- vis spectra and polarized UV-vis spectra.The interaction between porphyrin rings is stronger in pure TAPP monolayer, and the distance between the macrocycles was deduced to be about 0.55 nm. The distance between the macrocycles does not change obviously in the 1: 1 complex monolayer, but the distance between the adjacent aggregates increased. In the 1:4 complex monolayer, the distances between the macrocycles in the same aggregate and between the adjacent aggregates increased significantly, and the interactions between porphyrin rings became weaker.