光学学报, 1997, 17 (1): 91, 网络出版: 2006-10-31
半花菁LB多层膜的光致各向异性研究
Study on Photoinduced Optical Anisotropy in Hemicyanine Langmuir Blodgett Multilayers
Langmuir-Blodgett多层膜 各向异性 半花菁 二次谐波产生 Langmuir Blodgett multilayers second harmonic generation hemicyanine anisotropy
摘要
用光学线性(偏振紫外-可见吸收)和非线性(旋转样品二次谐波)方法研究了Y型半花菁花生酸交替LB多层膜的光致光学各向异性。在纳秒紫外偏振脉冲激光照射下,LB多层膜中半花菁分子发色团长轴向紫外光偏振方向重新取向。加热可以使LB多层膜平面内各向异性消失及H-聚集体分解。
Abstract
Photoinduced optical anisotropy in Y type interleaving hemicyanine/arachidic acid Langmuir Blodgett multilayers has been investigated by optical linear and nonlinear measurements. Under illumination of a polarized UV nanosecond laser beam, the hemicyanine molecules would reorient and align their chromophore axes along the direction of the UV beam polarization. Thermal isotropic process was accompanied by dissociation of the H aggregate in the hemicyanine LB multilayers.
周广朋, 韩奎, 徐建华, 陆兴泽. 半花菁LB多层膜的光致各向异性研究[J]. 光学学报, 1997, 17(1): 91. 周广朋, 韩奎, 徐建华, 陆兴泽. Study on Photoinduced Optical Anisotropy in Hemicyanine Langmuir Blodgett Multilayers[J]. Acta Optica Sinica, 1997, 17(1): 91.
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