Biphotochromic and ionochromic benzoxazolyl-substituted spirobipyrans
| Autor: | N. A. Voloshin, E.B. Gaeva, Anatoly V. Chernyshev, A.S. Nepomnyashiy, E. V. Solov’eva, A. V. Metelitsa, Oleg P. Demidov |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
General Chemical Engineering
Metal ions in aqueous solution General Physics and Astronomy 02 engineering and technology General Chemistry Benzoxazole 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences Benzopyran chemistry.chemical_compound Photochromism chemistry Absorption band Molecule Merocyanine 0210 nano-technology Isomerization |
| Zdroj: | Journal of Photochemistry and Photobiology A: Chemistry. 413:113259 |
| ISSN: | 1010-6030 |
| Popis: | Novel photochromic spirobipyrans bearing benzoxazole group in the 3H-naphthopyran fragment have been synthesized. Spiro-conjugated benzopyran and naphthopyran fragments cause the observed dual photochromism of the molecules. In the presence of Cd2+, Mn2+, Co2+, Ni2+, Zn2+, Cu2+ metal ions thermal isomerization of the spirobipyrans is observed, followed by the formation of the intensely coloured complexes of the merocyanine form. The long-wavelength absorption band of the complexes is located at λ>600 nm. |
| Databáze: | OpenAIRE |
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