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Imidazolium as an acceptor unit in push-pull chromophores

Authors: Pippig Falko | Bureš Filip

Year: 2013

Type of publication: ostatní - přednáška nebo poster

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	Imidazolium as an acceptor unit in push-pull chromophores	Organic push-pull systems play an important role as active materials in optoelectronic devices. Among others, five-membered imidazole can be employed as a p-conjugated backbone in such charge-transfer chromophores. Moreover, further alkylation of imidazole generates imidazolium ion that would possess pronounced electron accepting ability. Hence, we have proposed a general structure of D-p-A system with methoxy donor appended at the position C2 and aromates modified by auxiliary acceptors at positions C4 and C5. This arrangement would assure efficient intramolecular charge-transfer from the methoxy donor to the imidazolium ion and results in push-pull chromophore with enhanced nonlinear-optical properties.	Imidazolium; acceptor unit; push-pull chromophores