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利用稳态荧光谱和时间分辨荧光技术研究了温度对半花菁Langmuir Blodgett(LB)多层膜光致荧光特性的影响。半花菁分子在半花菁 /花生酸、半花菁 /花生酸镉交替及纯半花菁Z 型LB多层膜中均形成了H 聚集体 ,加热能使聚集体部分离解。由于Z 型膜中没有花生酸或花生酸镉的屏蔽 ,分子间具有较强的偶极相互作用 ,加热使聚集体的离解的程度较小。镉离子的加入对半花菁LB多层膜的稳态荧光谱也有一定的影响
The effects of temperature on the photoluminescence of semi-cyanine hemimorphic Langmuir Blodgett (LB) multilayer films were studied by steady state fluorescence spectroscopy and time-resolved fluorescence. Hemicocyanine molecules formed H aggregates in hemicyanine / arachidic acid, hemicyanine / arachidate alternating and pure hemicyanine Z-type LB multilayers. Heating could cause partial dissociation of aggregates. Due to the absence of arachidic acid or cadmium arsenate shielding in the z-type membrane, the molecules have strong dipole interactions and the extent of dissociation of the aggregates by heating is less. The addition of cadmium ion also has a certain influence on the steady-state fluorescence spectrum of hemicyanine LB multilayers