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Abstract:
Inherent redox active carbocation center with strong photo absorption in visible light region shapes the triaryl carbenium system as a unique platform for diverse applied fields. Synthesized in two steps from corresponding aryl precursor, this moiety can easily react with primary amines in different temperature to yield either acridinium or helicenium. Acridiniums are widely celebrated as photooxidant in the field of photocatalysis. Nevertheless, we have developed a photoreducing acridinium family which absorbs low energy green light. At the same time, we were able to photoexcite the helicene radicals that can demonstrate reduction potential similar to the alkali metals. Apart from photocatalysis, nitro functionalized helicenium was employed as electrolytes in the organic redox flow battery system. Furthermore, in our quest to develop metal-carbocation interaction, we have synthesized imine-metal complexes exploiting the Lewis acidic nature of the carbocation center.
Presenter:
MD Mubarak Hossain, Graduate Student, Department of Chemistry and Biochemistry, The University of Arizona
Biosketch:
Mubarak is a PhD candidate working in the Gianetti Lab. His research focuses on photoredox catalysis and the study of underlying mechanisms. He is a winner of David F. O’Brien fellowship and Carl S. Marvel Fellowship in the department of CBC. Apart from that, he is also a winner of the Merck Research Award for the Underrepresented Chemists of Color.
Hosted By:
Dr. Thomas Gianetti