Abstract: Laser action has been studied by pumping solutions of seven 1,4-bis-(β-styryl)benzene derivatives with a nitrogen laser.Being capable of giving higher relative energy transfer efficiency than PPO(2,5-dipheny-loxazole),the compounds (1),(2),(3),(5),and(7) may be used as dye lasers in between 4000Aand 5000A.Laser action has been studied by pumping solutions of seven 1,4-bis-(β-styryl)benzene derivatives with a nitrogen laser.Being capable of giving higher relative energy transfer efficiency than PPO(2,5-dipheny-loxazole),the compounds (1),(2),(3),(5),and(7) may be used as dye lasers in between 4000Aand 5000A.