The photophysical properties of N-methyl-1,8-naphthalimide (NI) and 4-phenoxy-N-methyl-1,8-naphthalimide (4-PNI) are studied by steady-state and time-resolved emission measurements. Both absorption and fluorescence spectra are red-shifted when the electron donor phenoxy group (-OPh) is introduced at the C-4 position. Compared to NI, the spectral shift in acetonitrile is 27 and 42 nm for the absorption and fluorescence, respectively. The 4-PNI shows high fluorescence emission in non-polar aprotic solvents that can be ascribed to stabilization of the S, state. The emission intensity of the 4-PNI decreases by addition of water to dioxane solution, and the fluorescence quenching occurs by combination of dynamic and static contribution ascribed to specific solute-solvent interaction. (c) 2006 Elsevier B.V. All rights reserved.
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North China Univ Water Resources & Elect Power, Phys Lab, Zhengzhou 450011, Peoples R ChinaNorth China Univ Water Resources & Elect Power, Phys Lab, Zhengzhou 450011, Peoples R China
Yang, Da-Peng
Li, Hui
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Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R ChinaNorth China Univ Water Resources & Elect Power, Phys Lab, Zhengzhou 450011, Peoples R China
Li, Hui
Liu, Yu-Fang
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Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R ChinaNorth China Univ Water Resources & Elect Power, Phys Lab, Zhengzhou 450011, Peoples R China
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Univ Nantes, UMR CNRS 6230, Lab CEISAM, 2 Rue Houssiniere,BP 92208, F-44322 Nantes 3, France
Inst Univ France, 1 Rue Descartes, F-75231 Paris 05, FranceUniv Sydney, Sch Chem, Sydney, NSW 2006, Australia
机构:
Kaunas Univ Technol, Dept Polymer Chem & Technol, LT-50254 Kaunas, LithuaniaKaunas Univ Technol, Dept Polymer Chem & Technol, LT-50254 Kaunas, Lithuania
Gudeika, Dalius
Grazulevicius, Juozas V.
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Kaunas Univ Technol, Dept Polymer Chem & Technol, LT-50254 Kaunas, LithuaniaKaunas Univ Technol, Dept Polymer Chem & Technol, LT-50254 Kaunas, Lithuania
Grazulevicius, Juozas V.
Volyniuk, Dmytro
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Kaunas Univ Technol, Dept Polymer Chem & Technol, LT-50254 Kaunas, LithuaniaKaunas Univ Technol, Dept Polymer Chem & Technol, LT-50254 Kaunas, Lithuania
Volyniuk, Dmytro
Juska, Gytis
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Vilnius State Univ, Dept Solid State Elect, LT-10222 Vilnius, LithuaniaKaunas Univ Technol, Dept Polymer Chem & Technol, LT-50254 Kaunas, Lithuania
Juska, Gytis
Jankauskas, Vygintas
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Vilnius State Univ, Dept Solid State Elect, LT-10222 Vilnius, LithuaniaKaunas Univ Technol, Dept Polymer Chem & Technol, LT-50254 Kaunas, Lithuania