A new bifunctional photorefractive active succinate (TPD-2DCVA) consisting of a tetraphenyldiaminobiphenyl (TPD) unit and 4-dicyanovinylaniline (DCVA) moieties was prepared, which forms stable molecular glass. The glass-transition temperatures (T-g's) of TPD-2DCVA-based composites were efficiently controlled by the doping of small amount of plasticizers. The compound possesses a high photoconductivity of 2.1 x 10(-9) cm Omega(-1) W-1 at 50 V mu m(-1). A gain coefficient of 56.7 cm(-1) at electric field of 56 V mu m(-1) was achieved. Fast response times of 29-37 ms were also obtained at low electric fields for these composites.