Unique Solvatochromism of a Membrane Composed of a Cationic Porphyrin−Clay Complex
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- 作者：Shinsuke Takagi ; Tetsuya Shimada ; Dai Masui ; Hiroshi Tachibana ; Yohei Ishida ; Donald A. Tryk ; Haruo Inoue
- 刊名：Langmuir
- 出版年：2010
- 出版时间：April 6, 2010
- 年：2010
- 卷：26
- 期：7
- 页码：4639-4641
- 全文大小：719K
- 年卷期：v.26,no.7(April 6, 2010)
- ISSN：1520-5827
文摘
A novel optically transparent membrane composed of porphyrin−clay mineral complexes was developed. Reversible solvatochromism behavior of the membrane was successfully observed, due to an orientation change of porphyrin in the clay interlayer space. The λmax value of porphyrin was 423 nm in acetone, while it was 464 nm in hexane. The color of the membrane changed from pink to green through to brown, when Sn porphyrin was used. The mechanism for solvatochromism in the present system is very unique compared to those for conventionally reported materials.