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化学学报
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化学学报 ›› 2003, Vol. 61 ›› Issue (3): 422-426. 上一篇    下一篇

研究论文

静电自组装聚电解质/有机染料插层蒙脱土光致变色纳米复合膜

李钟;李强   

  1. 中国科学院化学研究所分子科学中心
  • 发布日期:2003-03-15

Electrostatic Self-assembly Polyelectrolyte/Cation Azobenzene Dye- Montmorillonite Photochromic Nanocomposite Films

Li Zhong;Li Qiang   

  1. Center for Molecular Science,Institute of Chemistry,Chinese Academy of Sciences
  • Published:2003-03-15

PDF

848

被引次数

20 | 3

从构筑静电自组装聚电解质／有机染料插层蒙脱土光致变色纳米复合膜所必需 的基本纳米构件--有机染料插层蒙脱土光致变色纳米复合物的设计出发，制备了具有光致 变色功能的蒙脱土／阳离子偶氮染料（GTL）均插层纳米复合物现，插人蒙脱土层 间的GTL热稳定性大幅度提高．由于GTL在纳米受限空间的超分子有序结构共轭，使 偶氮基发生了高达91 nm的显著红移．使用该插层纳米复合物构件与阳离子聚电解 质（PDAC）通过静电自组装得到了生长均匀、排列规整有序的光致变色聚电解质／ 阳离子偶氮染料插层蒙脱土纳米复合膜.

关键词: 光致变色, 偶氮染料, 纳米相材料, 聚电解质, 蒙脱石

Montmorillonite/cation azobenzene dye ( GTL) intercalation nanocomplexes were prepared. The thermostability of intercalated dye was greatly enhanced as compared with pure GTL. It was also found that the absorption band corresponding to azobenzene group in intercalated GTL shifted towards longer wavelength by 91 nm as compared with pure GTL, which could be ascribed to the strong conjugation of GTL supramolecular order structure (J cluster) confined in a nanoscale space of montmorillonite interlayer gallery. Using such nanocomplexes as blocks to build polyelectrolyte/cation azobenzene dye- montmorillonite nanocomposite films via electrostatic self-assembly technique, PDAC/GTL-montmorillonite photochromic nanocomposite films was constructed finally.

Key words: PHOTOCHROMISM, AZO DYES, NANOPHASE MATERIALS, POLYELECTROLYTE, MONTMORILLONITE

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