Yuncheng Yan, Wen-long Pan, Huacan Song
Aug 1, 2010
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Influential Citations
48
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Journal
Dyes and Pigments
Abstract
Abstract A series of 1,3,4-oxadiazole derivatives containing an imidazole unit were synthesized and characterized using 1 H NMR, 13 C NMR, mass spectrometry (or high-resolution mass spectrometry) and elemental analysis. The crystal structure of 2,5-bis(4-(1- n -butyl-4,5-diphenylimidazol-2-yl)phenyl)-1,3,4-oxadiazole was determined as monoclinic, space group C2/c type, using single crystal X-ray crystallography. For nine samples, UV–visible absorption coefficient ( ɛ ), maximum wavelength ( λ max ), fluorescence excitation wavelength ( λ ex ), fluorescence emission wavelength ( λ em ), fluorescence quantum yield ( Φ F ), fluorescence lifetime ( T ) were measured in dichloromethane and in the solid state. For these selected compounds, thermogravimetric analysis was also employed and structure:optical behaviour characteristics were discussed.