摘要
用DSC、CD和UV光谱研究了单链手性化合物C_(12)-L-Val-Azo-CmN^+(Ⅰ)和C_S^FC_2-L-Val-Azo-Cm N^+(Ⅱ)(1,m=6;2,m=10)双层分子膜的相转移过程。实验表明:它们形成的双层分子膜相转移过程包含复杂的亚相相互作用;膜构型转移临界点(Tc’)与主相转移临界点(Tc)有较大差别:化合物Ⅰ-1,Tc’>Tc;Ⅰ-2和Ⅱ-1,Tc’<Tc;Ⅲ-2未见明显的Tc’;在双层分子膜的分子集合场中偶氮苯(发色团)的电子能级产生位移。
The phase transition behavior of chiral, bilayer membranes was studied by DSC, CD and UV spectrometry, which are self-organized from single-chain am-phiphiles containing L-valine that azobenzene: C_(12)-L-Val-Azo-CmN^+(Ⅰ) and C_?~FC_?-L-Val-Azo-CmN^+(Ⅱ)(1m=6; 2m=10). DSC thermograms and CD and UV spectra showed that the phase transitons of their bilayer membranes consist of oomplex subphase interactions, that the Critical points (Tc') of membranous conformation transitions are different from that (Tc) of main phase transitions: compound Ⅰ-1,Tc'>Tc; Ⅰ-1 and Ⅱ-1, Tc'<Tc; Ⅱ-2, no obvious Tc', aud that the electronic energy level of azobenzene (chromophote) can shifts in molecular cluster field of bilayer membrane.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
1992年第3期49-54,共6页
Acta Scientiarum Naturalium Universitatis Sunyatseni
关键词
相转移
膜构型
双层
分子膜
手性
phase transition
membranous conformation
molecular cluster field
bilayer membrane
