Pyrazoles are important UV absorbers and due to their photophysical properties they have received considerable attention as optical brighteners in detergents, and highly selective fluorescence sensors. They often display blue emission and large Stokes shifts, which makes them suitable in OLED applications and in dye-sensitized solar cells.<br/>In the past years we have disclosed various diversity-oriented approaches to substituted pyrazoles based upon consecutive multicomponent reactions based upon sequentially catalyzed processes. The substance libraries obtained by this approach allow comprehensive structure-fluorescence correlations and, eventually, the optimization of the fluorescence quantum yields. Furthermore, emission solvatochromic donor-acceptor pyrazole libraries can be efficiently generated.

Consecutive multicomponent syntheses of pyrazoles-diversity-oriented approach to blue emitters and emission solvatochromic dyes

253rd National Meeting (2017)

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