| Autor: |
Kai Wei, Xiang-ming Meng, Zhi-ping Zhang, Qing-Xiang Guo, Hui-yuan Hu, Man-Zhou Zhu |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Journal of Photochemistry and Photobiology A: Chemistry. 189:307-313 |
| ISSN: |
1010-6030 |
| DOI: |
10.1016/j.jphotochem.2007.02.020 |
| Popis: |
Fluorescent photoswitching molecules in which photochromic diarylethene with terpyridine units (tpy) attached via a phenylene linker to the thiophene rings were synthesized. Both compounds exhibited pronounced photochromic properties. Irradiation of the open form of compounds 1 and 2 with UV light resulted in immediate photocyclization to the blue closed form; the colorless open forms could be regenerated by irradiation with visible light. In terms of potential use for optical data storage and readout, compounds 1 and 2 display fluorescence discrimination between their open and closed form. This fluorescence switching could be the basis of a nondestructive readout method. And the complexation of these two compounds with metal ions was also studied. It is amazing to find the addition of Zn 2+ lead the emission wavelengths of 2a red shift up to 105 nm. This unique phenomenon makes the compound 2a , a candidate for the chemical sensor for zinc. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect