S-TAD

Spiro-TAD

2,2',7,7'-Tetrakis(diphenylamino)-9,9'-spirobifluorene

Spiro-TAD , 2,2',7,7'-tetrakis(N,N-diphenylaMino)-9,9-spir

2,2',7,7'-Tetrakis-(N,N-diphenylamino)-spiro-9,9'-bifluorene

N2,N2,N2′,N2′,N7,N7,N7′,N7′-octaphenyl-9,9′-spirobi[9H-fluorene]-2,2′,7,7′-tetramine