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Emeraldine salt of polyaniline-dodecylbenzenesulfonic acid (PANI-DBSA) in organic solvents such as toluene and xylene wasobtained by a direct one-step emulsion polymerization technique. When the molar ratio of DBSA to aniline monomer was 1.5:1, solu-PANI-DBSA was obtained on glass or plastic substrate under ambient conditions. PANI solution can also be easily blended with poly-urethane and polystyrene polymers in toluene. Better electrical performance (up to 5 S/cm), good light transmittance (up to 70% at500 nm thickness), were obtained and more homogeneous morphology was observed for the casting lm of PANI-DBSA preparedby the present method as compared with that prepared by the aqueous emulsion polymerization. The partially dispersed PANI-DBSAsamples was conrmed from the XRD patterns.