研究了不同活性分子 (半花菁和氐盐 )混合聚集体的形成以及紫外光照射对 L B交替多层膜光致荧光 (PL)特性的影响。在半花菁和氐盐混合的 L B膜中 ,由于不同分子间较强的相互作用使混合膜的荧光光谱较纯半花菁和氐盐分子膜分别发生了蓝移和红移。利用紫外光照射可以使分子的聚集体部分分解甚至破坏分子的结构 。
Polarized UV-visible absorption spectroscopy was used to investigate the inplanc orientation of the hemicyanine molecules in Y-type Langmuir-Blodgett(LB) multilayers. We demonstated for the first time that the dipping-induced molecular alignment.was enhanced significantly with increasing the layer number due to the interlayer interactions. Polarized UV nanosecond pulses were used to control the photoinduced reorientation of the hemicyanine molecules. Thermal-isotropic process was accompaniedd by dissocition of the H-aggregate in hemicyanine LB multilayers.
