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Paper | Regular issue | Vol 78, No. 4, 2009, pp.999-1013
Published online, 25th December, 2008
DOI: 10.3987/COM-08-11609
Novel Charge-Transfer Chromophores Featuring Imidazole as π-Linkage

Anjan Patel, Filip Bureš,* Miroslav Ludwig, Jiří Kulhánek, Oldřich Pytela, and Aleš Růžička

*Department of Organic Chemistry, Faculty of Chemical Technology, University of Pardubice, nám. Čs. legií 565, Pardubice, CZ-532 10, Czech Republic

Abstract

Overall 21 imidazole-based chromophores have been synthesized and fully characterized. The imidazole core was systematically substituted with donors (NMe2 and OMe) and acceptors (NO2 and CN groups) additionally separated from the imidazole by π-spacers such as 1,4-phenylen, styryl or thiophen-2-yl in order to finely tune their intramolecular charge transition. The target chromophores were further investigated by UV/Vis spectroscopy as potentially NLO-active compounds.