Donor-acceptor-type conjugated polymers (CV-QP-1 and CV-QP-2) containing carbazole-quinoline moiety were polymerized via Wittig condensation route. The structure of the polymers was well established by FTIR, NMR and gel permeation chromatography (GPC) techniques. The two polymers exhibited UV-Vis absorption bands at around 250-340 nm in solution and 360-365 nm in thin film. Fluorescence spectra showed PL maximum at 390-460 nm in solution and 470-480 nm in thin film. They had thermal stability up to 225 A degrees C with 7 % weight loss and char yields at 400 A degrees C. The polymers showed irreversible oxidation with ionization potential ranging from 6.36 to 6.35 eV and reversible electrochemical reduction with electron affinity of 3.75-3.70 eV, which indicated that the polymers are expected to provide enhanced charge-transporting (electron transport/hole blocking) properties for the development of efficient polymer light-emitting diodes (PLEDs). Carbazole- and quinoline-functionalized polymer exhibits excellent metal ion detection towards Fe2+ which suggests that the synthesized polymers are expected to promise future application in metal ion sensing.