University of PardubiceFaculty of Chemical Technology

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1,3,5-Triazine as electron withdrawing group in push-pull system

Authors: Šimon Pavel | Kulhánek Jiří

Year: 2018

Type of publication: ostatní - přednáška nebo poster

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	1,3,5-Triazine as electron withdrawing group in push-pull system	This work deals with the synthesis and study of properties of new derivatives of 1,3,5-triazine. The 1,3,5-triazine was used as an acceptor of electrons and dimethyl amino group as a donor of electrons in target molecules with -conjugeted system as a bridge. The  linkage has been formed by systematic extension of the -conjugated path by ethenylene, ethynylene and 1,4-phenylene subunits. Knoevenagel condensation and cross-coupling reactions were used for preparation of eight new push-pull chromophores (7 compounds have not been described in the literature yet). In the prepared chromophores were studied effect of 1,3,5-triazine as electron withdrawing group in push-pull systems and physico-chemical properties depending on the conjugated system between donor and acceptor. New compounds were identified by 1H and 13C NMR, IR and MALDI (and 5 chromophores were identified by RTG analysis). The properties of target molecules were investigated by cyclic voltammetry, UV/Vis spectroscopy, differential scanning calorimetry, and by the semi empiric calculations. The prepared chromophores have a good fluorescence properties, thermal stability and they are soluble in commercial organic solvents. These facts it is giving good probability to use chromophore as an organic photovoltaic solar cells (OPVC) or light-emitting diodes (OLED). The picture is shown solvent effect of chromophore with ethenylbiphenyle backbone between acceptor and donor moiety.	Push-pull chromofor; 1,3,5-triazin; akceptor; cross-coupling