Photochromism of Clay−Diarylethene Hybrid Materials in Optically Transparent Gelatin Films
Photochromism of Clay−Diarylethene Hybrid Materials in Optically Transparent Gelatin Films
复制标题
光学透明明胶薄膜中粘土-二芳基乙烯杂化材料的光致变色
DOI：
10.1021/cm000822v
复制
发表时间：
2001
影响因子：
8.6
通讯作者：
K. Takagi
中科院分区：
文献类型：
--
作者：
R. Sasai;H. Itoh;Itsuki Shindachi;T. Shichi;K. Takagi
将粘土-二芳基乙烯杂化材料分散到离子型生物聚合物明胶中，成功制备了高功能的光致变色膜。将分散在N，N-二甲基甲酰胺（DMF）水溶液中的明胶和粘土-二芳基乙烯杂化材料的混合物浇铸在玻璃板上。在50 °C下干燥后获得的膜在可见光区域中是透明的，并且通过用约300 nm的UV光和约600 nm的可见光交替照射显示出高度可逆的着色和脱色。X-射线衍射分析表明，二芳基乙烯分子能够保持在粘土夹层中，而不会溢出到散装明胶基质中。此外，紫外可见偏振光谱分析显示，粘土-二芳基乙烯混合材料的取向基本上平行于玻璃板，这表明二芳基乙烯分子在粘土夹层内排列为倾斜的叉指状单层。
The dispersion of clay−diarylethene hybrid materials into an ionic biopolymer, gelatin, was investigated for the successful preparation of highly functional photochromic films. A mixture of the gelatin and the clay−diarylethene hybrid material dispersed in aqueous N,N-dimethylformamide (DMF) was cast on a glass plate. The film obtained after drying at 50 °C was transparent in the visible light region and showed highly reversible coloration and decoloration by alternative irradiation with UV light of around 300 nm and visible light of around 600 nm. X-ray diffraction analysis indicated that the diarylethene molecules were able to remain in the clay interlayers without spilling into the bulk gelatin matrix. Moreover, UV−visible polarized spectroscopic analysis revealed the clay−diarylethene hybrid materials to be oriented essentially parallel to the glass plate, indicating that the diarylethene molecules are aligned as inclined interdigitated monolayers within the clay interlayers.