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研究了一种新的gemini表面活性剂(C12H24-α,ω-(C12H25N+(CH3)2Br-)2,(简写为C12-C12-C12)和TPPS在气液界面上形成的复合膜及其手性.实验发现,单独C12-C12-C12不能在纯水表面形成稳定的单分子膜,但当亚相中存在TPPS时,可形成稳定的单分子膜,通过水平提拉法将复合膜转移到固体体基板上,发现在适当的pH值条件下,1TPPS可在复合膜中形成J-聚集体,并且发现,尽管Gemini表面活性剂和TPPS都是非手性的,TPPS的J-聚集体表现出强烈的Cotton效应.另外,gemini表面活性剂的两个正电荷中心对矸IPPS的J-聚集体的手性并不能表现出协同效应。
A new composite membrane of gemini surfactant (C12H24-α, ω- (C12H25N + (CH3) 2Br-) 2 (C12-C12-C12) and TPPS It has been found that C12-C12-C12 alone can not form a stable monomolecular film on the surface of pure water, but when TPPS is present in the subphase, a stable monomolecular film can be formed and the composite film can be transferred to On a solid substrate, 1TPPS was found to form J-aggregates in the composite membrane at the appropriate pH conditions, and it was found that the J-aggregates of TPPS, although both Gemini surfactant and TPPS are achiral, In addition, the two positive charge centers of gemini surfactants did not show a synergistic effect on the chirality of the J-aggregates of IPPS.