TY - JOUR
T1 - Photostability of a series of two-photon absorbing flourene derivatives
AU - Belfield, Kevin D.
AU - Bondar, Mykhailo V.
AU - Przhonska, Olga V.
AU - Schafer, Katherine J.
N1 - Funding Information:
We wish to acknowledge the donors of The Petroleum Research Fund of the American Chemical Society, the Research Corporation Cottrell College Science program, the National Research Council COBASE award, the National Science Foundation, and the University of Central Florida Presidential Initiative for Major Research Equipment for partial support of this work.
PY - 2004/3/15
Y1 - 2004/3/15
N2 - The photochemical stability of a series of two-photon absorbing (TPA) fluorene derivatives was investigated in air- and N2-saturated acetonitrile (ACN) at room temperature. The quantum yields of the photoreactions, Φ, were determined at various concentrations of the fluorene derivatives, oxygen concentration of the solvent, and irradiation wavelength. The absorption and fluorescence spectra of the photoproducts, corresponding to different excitation conditions, were analyzed. Photooxidation and electron transfer processes are proposed as photobleaching mechanisms for the fluorene derivatives in ACN. The relatively low photochemical quantum yields (Φ∼10-4) make the derivatives particularly promising for linear and nonlinear optical applications.
AB - The photochemical stability of a series of two-photon absorbing (TPA) fluorene derivatives was investigated in air- and N2-saturated acetonitrile (ACN) at room temperature. The quantum yields of the photoreactions, Φ, were determined at various concentrations of the fluorene derivatives, oxygen concentration of the solvent, and irradiation wavelength. The absorption and fluorescence spectra of the photoproducts, corresponding to different excitation conditions, were analyzed. Photooxidation and electron transfer processes are proposed as photobleaching mechanisms for the fluorene derivatives in ACN. The relatively low photochemical quantum yields (Φ∼10-4) make the derivatives particularly promising for linear and nonlinear optical applications.
KW - Fluorene derivatives
KW - Photochemical quantum yield
KW - Photooxidation
KW - Photostability
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U2 - 10.1016/S1010-6030(03)00393-9
DO - 10.1016/S1010-6030(03)00393-9
M3 - Article
AN - SCOPUS:1342307567
SN - 1010-6030
VL - 162
SP - 489
EP - 496
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
IS - 2-3
ER -