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A New ESIPT Fluorescent Dye‐Doped Silica Aerogel
Author(s) -
Rodembusch Fabiano Severo,
Campo Leandra Franciscato,
Rigacci Arnaud,
Stefani Valter
Publication year - 2005
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200551122
Subject(s) - aerogel , fluorescence , benzoxazole , photochemistry , materials science , silica gel , intramolecular force , doping , chemistry , organic chemistry , nanotechnology , physics , optoelectronics , quantum mechanics
Summary: A silyl‐functionalized benzazole dye, fluorescent by excited state intramolecular proton transfer (ESIPT) mechanism, was synthesized by reacting 2‐(2′‐hydroxyphenyl)benzoxazole with 3‐(triethoxysilyl)propyl isocyanate. The fluorescent silica gel was prepared by the addition of a solution of 2‐propanol and the fluorescent dye after the gelation time. The monolithic aerogel was obtained via supercritical CO 2 drying of the fluorescent gel. The resulting aerogel is transparent in the visible light and fluorescent in the blue‐green region under UV radiation.