【摘要】 用作“表面离子”的钌螯合物Ru(dpphen)2+3与脂肪酸类成膜分子以1:2混合时能够得到稳定的混合单分子膜.以十八烷基三氯硅烷(octadecayltrichlorosilane,OTS)分子部分取代Ru(dpphen)2+3,得到功能分子组份可控的混合单分子膜.研究表明,OTS分子在纯水表面上可以形成交联网状单分子膜结构,混入硬脂酸(SA)分子后,网状结构逐渐被破坏.SA含量增加,破坏的程度就增大,直至SA/OTS为3:1时,完全没有网状交联结构,形成可以用来沉积LB膜的均匀致密的单分子膜.表面离子Ru(dpphen)2+3与OTS和SA一起构成三组份混合单分子膜,OTS和Ru(dpphen)2+3为表面离子.单分子膜中混有Ru(dpphen)2+3分子,可以有效地阻止OTS的交联发生,同时Ru(dpphen)2+3/SA基团与OTS/SA基团是均匀共混的.改变Ru(dpphen)2+3/SA基团与OTS/SA基团的混合比,即可以做到Ru(dpphen)2+的组份精确可控,得到可用来沉积LB膜的均一、稳定的单分子膜.更多还原

【Abstract】 In a mixture of and stearic acid (SA),the ratio of :SA=1 :2 is the only best one and any excess of or SA is not favorable for the deposi tion of mixed monolayer and LB films.If variation of the composition of in LB films is needed,some non- functional “ surface ions" must be introduced to rep lace partially.The octadecyltrichlorosilane (OTS) was used to replace successf ully.The threshold concentration of in mixing SA- OTS- on pure water and fo rming controlled LB films was studied.OTS can form crosslinked network monolaye r on pure water,on interfusing SA,crosslinked network is destroyed gradually.Inc rease of concentration of SA,till SA/OTS=3:1,there is no crosslinked network in the monolayer and is favorable for the stable and condensed mixed monolayer and LB films deposition./OTS/SA forms three component mixed monolayer,/OTS are surf ace ions.It is availably to prevent OTS from crosslinking when is mixed./SA an d OTS/SA are uniformly mixed.By changing the mixing ratios of/SA and OTS/SA,com ponent of will be controled accurately and can lead the deposition of stable an d condensed mixed monolayer for LB films.更多还原