Emeraldine salt of polyaniline-dodecylbenzenesulfonic acid (PANT-DBSA) in organic solvents such as toluene and xylene was obtained by a direct one-step emulsion polymerization technique. When the molar ratio of DBSA to aniline monomer was 1.5:1, solubility and electrical property showed a maximum value. The solid contents of PANT-DBSA was 8 wt.% in toluene. The casting film of PANI-DBSA was obtained on glass or plastic substrate under ambient conditions. PANT solution can also be easily blended with polyurethane and polystyrene polymers in toluene. Better electrical performance (up to 5 S/cm), good light transmittance (up to 70% at 500 nm thickness), were obtained and more homogeneous morphology was observed for the casting film of PANT-DBSA prepared by the present method as compared with that prepared by the aqueous emulsion polymerization. The partially dispersed PANI-DBSA particles of 50-400 nm sizes in organic solvents such as toluene and xylene were observed and the crystalline nature of these powder samples was confirmed from the XRD patterns. (c) 2006 Elsevier B.V. All rights reserved.