Add time:09/10/2019         Source:sciencedirect.com

This paper describes the synthesis of a novel series of 2-aryl-6-(1H-indol-1-yl)-4-(trifluoromethyl)quinolines, in which aryl = C6H5, 4-CH3C6H4, 4-FC6H4, 4-CF3C6H4 and heteroaryl = 2-thienyl, by an Ullmann-type cooper-catalyzed amination cross-coupling reaction. Photophysical properties of indolyl-quinolines were investigated using absorption and emission analysis. The emission fluorescence analysis showed a blue to cyan region emission in the 400–650 nm range. Large Stokes shifts values were observed for all new quinolines and attributed to the ICT state and to the electron-substituent properties. The ability to generate 1O2 species after being exposed to white light and biomolecule-binding DNA / HSA properties were also investigated.

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