Updatable Holographic Diffraction of Monolithic Carbazole-Azobenzene Compound in Poly(methyl methacrylate) Matrix
Updatable Holographic Diffraction of Monolithic Carbazole-Azobenzene Compound in Poly(methyl methacrylate) Matrix
复制标题
DOI：
10.1021/acs.jpcc.5b04869
复制
发表时间：
2015-07
影响因子：
3.7
通讯作者：
N. Tsutsumi;K. Kinashi;Kanako Ogo;T. Fukami;Y. Yabuhara;Y. Kawabe;K. Tada;K. Fukuzawa;Masuki Kawamoto;T. Sassa;T. Fujihara;T. Sasaki;Y. Naka
中科院分区：
文献类型：
--
作者：
N. Tsutsumi;K. Kinashi;Kanako Ogo;T. Fukami;Y. Yabuhara;Y. Kawabe;K. Tada;K. Fukuzawa;Masuki Kawamoto;T. Sassa;T. Fujihara;T. Sasaki;Y. Naka
提出了3-[（4-硝基苯基）偶氮]-9H-咔唑-9-乙醇（NACzE）分散聚甲基丙烯酸甲酯（MMA）薄膜器件的可更新全息衍射的综合机理。最大灵敏度出现在561 nm处，这与NACzE分子的顺反异构体之间的等吸光点相吻合。这种全息光栅是由于NACzE分子的光取向引起的吸收光栅和随后的折射率光栅。衍射的响应和衰减时间由基质的玻璃化转变温度决定。
The comprehensive mechanism of updatable holographic diffraction is presented for a monolithic compound of 3-[(4-nitrophenyl)azo]-9H-carbazole-9-ethanol (NACzE) dispersed poly(methyl methacrylate) film device. The maximum sensitivity occurs at 561 nm, which well coincides with an isosbestic point between cis-trans isomers of NACzE molecule. The holographic grating is ascribed to the absorption grating and the following refractive index grating due to the photo-orientation of NACzE molecules. The response and decay times for the diffraction are governed by the glass transition temperature of the matrix.