[2-[(E)-2-(2,5-dimethylphenyl)ethenyl]phenyl]-diphenylphosphane;[2-[(E)-2-[8-[(E)-2-(2-diphenylphosphanylphenyl)ethenyl]-3,7-dimethyldibenzothiophen-2-yl]ethenyl]phenyl]-diphenylphosphane;[2-[(E)-2-[6-[(E)-2-(2-diphenylphosphanylphenyl)ethenyl]-2,7-dimethyl-9,9-dioctylfluoren-3-yl]ethenyl]phenyl]-diphenylphosphane