期刊
DYES AND PIGMENTS
卷 88, 期 3, 页码 307-314出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2010.07.009
关键词
N heteroaryl 1 8 naphthalimide; Solvent effect; DFT; Fluorescent sensor; Stern-Volmer equation; Water content
资金
- National Natural Science Foundation of China [20834002]
A series of N-heteroaryl-1 8-naphthalimides with good sensitivity to solvent polarity were prepared Empirical and quantum calculations showed that the electron withdrawing effect of the heteroaryl group increases the change in dipole moment on excitation which results in the fluorescence quantum yield dramatically falling as the solvent polarity increases A typical compound 4-(1-piperidyl)-N-(2-pyrimidinyl)-1 8-naphthalimide was chosen to determine the water content in six common solvents (p-dioxane tetrahydrofuran acetone dimethylformamide acetonitrile and methanol) Fluorescence intensity changes as a function of water content correlated well with a modified Stern-Volmer equation over a wide range with detection limits being 0 016% and 0 020% for acetone and tetrahydrofuran respectively (C) 2010 Elsevier Ltd All rights reserved
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