Unsymmetrically functionalized 5,5''-diaryl- and 5,6,5''-triaryl-2,2':6',2''-terpyridines: an efficient synthetic route and photophysical properties

An efficient approach for the synthesis of 5,5''- or 5,6,5''-arylsubstituted 2,2':6',2''-terpyridines, bearing an anneleted cyclopentene unit in one of the side-chain pyridine ring for the improved solubility in organic solvents, via their 1,2,4-triazine analogues has been developed. By using this approach, various aromatic substituents were introduced in the 2,2':6',2''-terpyridine core. Depending on the nature of the aromatic substituents the obtained terpyridines exhibited an intense emission in a range of ca. 344â 394 nm in acetonitrile solutions. For the most representative compounds a pronounced bathochromic shifts in both absorption and emission spectra were observed compare to previously reported substituted terpyridines.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author