TY - JOUR
T1 - Photophysical characterization of 2,9-bis(7-benzothiazole-9,9′-didecylfluoren-2-yl)perylene diimide
T2 - A new standard for steady-state fluorescence anisotropy
AU - Belfield, Kevin D.
AU - Bondar, Mikhailo V.
AU - Przhonska, Olga V.
AU - Schafer, Katherine J.
N1 - Funding Information:
The National Science Foundation (ECS-9970078, DMR9975773), the Research Corporation Cottrell College Science Award (CC5051), and the donors of The Petroleum Research Fund of the American Chemical Society (35115-B4) are gratefully acknowledged for partial support of this work. KDB and MVB would also like to acknowledge the National Research Council COBASE program for support.
PY - 2002/8/23
Y1 - 2002/8/23
N2 - The absorption, fluorescence excitation and emission spectra have been obtained in solution for 2,9-bis(7-benzothiazole-9,9-didecyl-fluoren-2-yl) perylene diimide. Efficient resonance energy transfer from the fluorenyl group to the perylene ring center was observed. Interestingly, fluorescence emission was detected from the second excited electronic state of the perylene ring system. Fluorescence excitation anisotropy spectra obtained at room temperature exhibited a parallel orientation of the main absorption and emission band transition moments for the perylene-based dye in CH2Cl2. The value of excitation fluorescence anisotropy for the perylene dye in solution approached the theoretical maximum limit (r ≈ 0.4), and indicated that the rotational correlation time exceeded the lifetime of the first excited state. These results provide the basis for using this unique compound as an anisotropy reference standard.
AB - The absorption, fluorescence excitation and emission spectra have been obtained in solution for 2,9-bis(7-benzothiazole-9,9-didecyl-fluoren-2-yl) perylene diimide. Efficient resonance energy transfer from the fluorenyl group to the perylene ring center was observed. Interestingly, fluorescence emission was detected from the second excited electronic state of the perylene ring system. Fluorescence excitation anisotropy spectra obtained at room temperature exhibited a parallel orientation of the main absorption and emission band transition moments for the perylene-based dye in CH2Cl2. The value of excitation fluorescence anisotropy for the perylene dye in solution approached the theoretical maximum limit (r ≈ 0.4), and indicated that the rotational correlation time exceeded the lifetime of the first excited state. These results provide the basis for using this unique compound as an anisotropy reference standard.
KW - Absorption
KW - Energy transfer
KW - Excitation anisotropy
KW - Fluorescence
KW - Perylene-based dyes
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U2 - 10.1016/S1010-6030(02)00176-4
DO - 10.1016/S1010-6030(02)00176-4
M3 - Article
AN - SCOPUS:0037162927
SN - 1010-6030
VL - 151
SP - 7
EP - 11
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
IS - 1-3
ER -