We have synthesised a diamine containing anisidine based nonlinear optical chromophore via π-conjugated bridge in order to prepare more thermally stable chromophores. The chromophore is synthesised by using m-Phenylene diamine consisting of amine group as a electron donor and p-nitroaniline consisting of nitro group as electron acceptor through π-conjugated system. After performing FTIR, NMR, UV-vis, Fluorescence emission and TGA it is confirmed that the chromophore is thermally stable and the diamine group in it enables it to be used as one of the monomer in the synthesis of nonlinear optical(NLO) polyimide.
