化学学报 ›› 2000, Vol. 58 ›› Issue (11): 1413-1418. 上一篇    下一篇

研究论文

12-钼磷酸-葡聚糖包合物固容体的光致变色

程贤甦;苏英草;关怀民   

  1. 福建师范大学高分子科学研究所.福州
  • 出版日期:2000-11-15 发布日期:2000-11-15

Photochromism of solid solution of an inclusion compound formed from 12-molybdenum phosphoric acid and dextran

CHENG XI;Su Yingcao;Guan Huaimin   

  1. Fujian Normal University, Inst of Polymer Sci.Fuzhou
  • Online:2000-11-15 Published:2000-11-15

通过DSC曲线,IR光谱,电子光谱和XRD谱分析,发现12-钼磷酸与葡聚糖在水溶液中可形成黄色包合物。以ESR,XPS,IR和电子光谱等手段研究此黄色包合物在紫外光照射下的光致变蓝紫色,是由于其光电子转移反应产物多价态钼(Ⅵ,Ⅴ,Ⅳ)配合物呈蓝紫色,而另一产物带部分羰基葡聚糖为无色所致。由DSC曲线,电子光谱,IR光谱和XRD谱测试结果得知,随着光化反应产物的生成,两者分子间产生包合作用,从而提高光致变色的稳定性。

关键词: 钼磷酸, 葡聚糖, 光致变色, 包合作用, 稳定性, 示差扫描量热法, 红外分光光度法, 钼络合物, 示差扫描量热法, 红外分光光度法

DSC, IR, UV-vis and XRD analysis showed that an inclusion compound was formed from 12-molybdenum phosphoric acid and dextran. The photochromism of the yellow inclusion compound was studied by ESR, XPS, IR and UV-vis spectra. it was shown that photoelectron transfer reaction between 12-molybdenum phosphoric acid and dextran in yellow inclusion compound occurred. The obtained product was blue-violet and composed of blue-violet multivalent molybdenum (Ⅵ, Ⅴ,Ⅳ) complex and colorless dextran with the partial carbonyl groups. DSC, UV-vis, IR and XRD measurements indicate that photochromic product mentioned above is also a kind of inclusion compound. Owing to the formation of this inclusion compound, the stability of photochromism is rised.

Key words: GLUCAN, PHOTOCHROMISM, STABILITY, DIFFERENTIAL SCANNING CALORIMETRY, INFRARED SPECTROPHOTOMETRY, MOLYBDENUM COMPLEX, DIFFERENTIAL SCANNING CALORIMETRY, INFRARED SPECTROPHOTOMETRY, X-RAY DIFFRACTION ANALYSIS

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