Synthesis and study of 2-alkoxy(2-alkylsulfanyl)-4,6-distyrylpyrimidines containing a terminal carbazole group.

[Figure not available: see fulltext.] We report the synthesis of new 4,6-distyrylpyrimidines containing an unsubstituted carbazole ring linked with the pyrimidine moiety by a flexible aliphatic seven-membered -O(CH)- or -S(CH)- bridge. The electrochemical and spectral properties of the synthesized compounds were studied; optical band gaps were calculated from the relevant UV absorption onsets and were found to be equal to 2.55 and 2.54 eV, respectively. A thin film based on the derivative with sulfur-containing bridge (-S(CH)-) was deposited on a conductive material and demonstrated to have a smooth surface and hole conductivity. [ABSTRACT FROM AUTHOR]