4,4'-bis(1-phenyl-1H-phenanthro[9,10-d]iMidazol-2-yl)biphenyl
4,4'-bis(1-phenyl-1H-phenanthro[9,10-d]iMidazol-2-yl)biphenyl ??
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4,4'-bis(1-phenyl-1H-phenanthro[9,10-d]iMidazol-2-yl)biphenyl C??? ??, ??, ??
4,4'-bis(1-phenyl-1H-phenanthro[9,10-d]iMidazol-2-yl)biphenyl ?? ?? ? ???
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4,4'-bis(1-phenyl-1H-phenanthro[9,10-d]iMidazol-2-yl)biphenyl ?? ??
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