Manjunatha, M.G.Vasudeva Adhikari, A.V.Hegde, P.K.Suchand Sandeep, C.S.S.Philip, R.2026-02-062010Journal of Electronic Materials, 2010, Vol.39, 12, p. 2711-27193615235https://doi.org/10.1007/s11664-010-1381-3https://idr.nitk.ac.in/handle/123456789/33136A new donor-acceptor-type poly[3-{5-[3,4-didodecyloxy-5-(1,3,4-oxadiazol- 2-yl)thiophen-2-yl]-1,3,4-oxadiazol-2-yl}-9-dodecyl-9H-carbazole] (P) has been synthesized through multistep reactions. The new polymer P exhibited good thermal stability and film-forming behavior. The electrochemical band gap is estimated to be 2.15 eV. The polymer emits intense green fluorescence in the solid state. Third-order nonlinear optical (NLO) studies showed that the strong absorptive nonlinearity observed for the polymer is of the optical limiting type, which is due to an "effective" three-photon absorption (3PA) process. This 3PA process can have potential applications in photonic devices. The studies revealed that the new polymer P is a promising material for development of efficient optoelectronic devices. © 2010 TMS.1,3,4-oxadiazole3PADonor-acceptor conjugated polymerelectrochemical propertiesfluorescenceN-dodecyl carbazoleoptical limiting