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- W2039278330 abstract "Abstract A phase‐change thermochromic system was designed through the reversible transformation of the 4‐substituted flavylium dye 4‐(2‐carboxyphenyl)‐7‐diethylamino‐4′‐dimethylamino‐1‐benzopyrylium into its leuco form, in the presence of a developer (ethyldiisopropylamine) and a suitable solvent (e.g., acetonitrile, n ‐pentadecanonitrile). The leuco form of the flavylium‐based dye is a spirolactone species whose ring opens at low temperature (below the solvent melting point) to form the blue flavylium cation. Decarboxylation of the lactone to give 4‐phenyl‐7‐diethylamino‐4′‐dimethylamino‐1‐benzopyrylium was observed upon irradiation of the system with UV light, erasing the thermochromic effect." @default.
- W2039278330 created "2016-06-24" @default.
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- W2039278330 date "2010-07-05" @default.
- W2039278330 modified "2023-10-18" @default.
- W2039278330 title "Formation of a leuco Spirolactone from 4-(2-Carboxyphenyl)-7-diethylamino-4′-dimethylamino-1-benzopyrylium: Design of a Phase-Change Thermochromic System Based on a Flavylium Dye" @default.
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- W2039278330 doi "https://doi.org/10.1002/chem.200903482" @default.
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