{HEAD ~ The present invention} relates to diphenyl amine derivatives having luminescent properties, and particularly to diphenyl {TAIL ~ amines} substituted with various electron donating or electron withdrawing groups 
{ HEAD ~ The present invention } relates to diphenyl amine derivatives having luminescent properties , and particularly to diphenyl { TAIL ~ amines } substituted with various electron donating or electron withdrawing groups
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH