3,3'- and 4,4'-biphenylene-bridged subporphyrin dimers.
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.
Inokuma
Yasuhide
Y
Department of Chemistry, Graduate School of Science, Kyoto University Sakyo-ku, Kyoto 606-8502, Japan.
Osuka
Atsuhiro
A