| 钨硅酸/有机胺改性的二氧化硅纳米复合薄膜的制备和光致变色性质 |
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| 引用本文： | 张铁锐,金明,冯威,卢然,包春燕,赵英英,李铁津,姚建年.钨硅酸/有机胺改性的二氧化硅纳米复合薄膜的制备和光致变色性质[J].高等学校化学学报,2002,23(10):1979-1981. |
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| 作者姓名： | 张铁锐 金明 冯威 卢然 包春燕 赵英英 李铁津 姚建年 |
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| 作者单位： | 1. 吉林大学化学学院,长春,130023
2. 中国科学院化学研究所分子科学中心,北京,100080 |
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| 基金项目： | 国家自然科学基金 (批准号 :5 993 2 0 40 )资助 |
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| 摘 要： | 光致变色材料由于在信息显示、传感器、调光器件和高密度存储等领域中具有显著的应用前景而备受关注1] .杂多酸是一类含有氧桥的无机多核配合物 ,可作为电子受体与有机给体形成电子给 -受配合物 ,该类配合物在光激发下可发生电子转移 ,并表现出光致变色性 2 ,3] .文献 4,5 ]已报道了以杂多酸为电子受体设计制备光致变色化合物 ,并研究了其在固态和溶液中的光致变色性 ,但由于粉末和溶液本身的局限性而限制了其应用 .本文首次报道了由溶胶 -凝胶法将钨硅酸 ( Si WA)引入到有机胺改性的二氧化硅 ( APS)网络 ,得到 Si WA/APS纳米复合薄…
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| 关 键 词： | 有机胺 改性 二氧化硅 制备 光致变色性质 乌硅酸 溶胶－凝胶法 电荷转移 纳米复合薄膜 |
| 文章编号： | 0251-0790(2002)10-1979-03 |
Preparation and Photochromic Properties of Tungstosilicate Acid/Organoamino-modified Silica Nanocomposite Films |
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| ZHANG Tie-Rui,JIN Ming,FENG Wei,LU Ran ,BAO Chun-Yan,ZHAO Ying-Ying,LI Tie-Jin.Preparation and Photochromic Properties of Tungstosilicate Acid/Organoamino-modified Silica Nanocomposite Films[J].Chemical Research In Chinese Universities,2002,23(10):1979-1981. |
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| Authors: | ZHANG Tie-Rui JIN Ming FENG Wei LU Ran BAO Chun-Yan ZHAO Ying-Ying LI Tie-Jin |
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| Institution: | ZHANG Tie-Rui,JIN Ming,FENG Wei,LU Ran *,BAO Chun-Yan,ZHAO Ying-Ying,LI Tie-Jin |
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| Abstract: | A novel inorganic-organic nanocomposite film was prepared and characterized by IR, UV-Vis, XRD and DTA-TG. IR and UV-Vis spectra show that the Keggin structure of SiW 12O 4- 40 polyanion is preserved in the composite film and there is an interaction between H 4SiW 12O 40 and the organic substrate. The composite film showed a reversible photochromism. Under UV irradiation, the composite film turns blue and charge transfer occurs by oxidation of R-NH + 3 and reduction of SiW 12O 4- 40. When the irradiated samples are placed in air and sheltered from the light, they change back to their original color, and recover again when being exposed to UV light. |
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| Keywords: | Tungstosilicate acid Sol-gel technique Photochromism Charge-transfer |
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