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3,3′- and 4,4′-Biphenylene-Bridged Subporphyrin Dimers

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journal contribution
posted on 18.12.2008, 00:00 by Yasuhide Inokuma, Atsuhiro Osuka
3,3′- and 4,4′-biphenylene-bridged subporphyrin dimers were synthesized by means of a Ni-catalyzed homocoupling reaction. Distinctly red-shifted absorption bands and enhanced fluorescence were observed only for the latter, indicating effective through-bond interactions through a 4,4′-biphenylene bridge, which is not possible for porphyrins.

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