Synthesis, photophysical and electrochemical properties of stilbenoid dendrimers with phenothiazine surface group

Synthesis of some novel stilbenoid dendrimers with the phenothiazine surface group has been achieved using Horner-Wadsworth-Emmons (HWE) and click reactions through convergent methodology. Alkyl chains have been incorporated at the periphery of phenothiazine moiety to enhance the solubility of the dendrimers. The photophysical properties indicate an increase in the molar extinction coefficient, fluorescence quantum yield, and lifetime as the generation of the dendrimer increases. The higher fluorescence quantum yield indicates the trans geometry for stilbene unit.