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Novel Disubstituted Phenylene-Linked Bis-imidazole Derivatives: Facile Synthesis and Optical Properties

✍ Scribed by Guang-Liang Song; Hong-Jun Zhu; Lei Chen; Shan Liu; Zhong-Hua Luo

Publisher
John Wiley and Sons
Year
2010
Tongue
German
Weight
328 KB
Volume
93
Category
Article
ISSN
0018-019X

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✦ Synopsis

Six novel disubstituted phenylene-linked bis-imidazole derivatives, 3a -3f, were prepared by a onepot, microwave-assisted method under solvent-free conditions, in yields ranging from 61.6 to 85.6%. The new compounds were characterized by 1 H-and 13 C-NMR, UV/VIS, and fluorescence spectroscopy, and mass spectrometry, as well as by elemental analyses. The influence of substituents and solvents on the optical properties of 3a -3f was investigated. It was found that there is little influence on absorption and excitation spectra in contrast to emission spectra. Compounds 3a -3f exhibit strong fluorescence in solution, their fluorescence quantum yields ranging from 0.27 to 0.96.

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