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The push-pull behavior of novel codonor-donor dyes bearing a N,N-dimethyl amine linked covalently  to  a  triphenylamine  group  through  a  vinyl  bridge  was  studied  by  experimental (electrochemical and spectroscopic) analysis. These dyes were obtained by conventional reactions using a convergent synthesis method. An intra-molecular charge transfer process was observed in the electronic structure of these compounds.

Ortiz G, A., Arcos, W. A., & Insuasty Obando, B. (2013). N, N-Dimethyl Amine Linked to Triphenylamine (TPA): A Promising Co-Donor Moiety in Organic Dyes and their Push-Pull Behavior. Revista De Ciencias, 17(3), 57–65. https://doi.org/10.25100/rc.v17i3.479