Journal
INTERNATIONAL JOURNAL OF PHOTOENERGY
Volume 2009, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2009/238615
Keywords
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Funding
- Russian Foundation for Basic Research [09-03-00052, 07-03-00234, 09-03-00813]
- Ministry of Education and Science of Russian Federation
- Russian Science Support Foundation [NSh-363.2008.3]
- [RNP2348]
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Novel photochromic spiropyrans (SPPs) containing 6'-hydroxy group were synthesized and their spectral properties as well as abilities for complexation with metal ions studied. In solutions they exist as equilibrium mixture of spirocyclic (A) and merocyanine (B) isomers. The largest content of merocyanine form was found for the derivative with an electron-donating methyl group in position 5 of hetaryl fragment. The irradiation of SPPs in acetonitrile shifts the equilibrium to the B form. Similar effect causes the addition of metal cations due to formation of colored complexes with merocyanine isomers. Copyright (C) 2009 Olga G. Nikolaeva et al.
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