摘要:
The first closely spaced quadruply bridged water-soluble cofacial dimer (5) was successfully synthesized by the reaction of porphyrin 2 with sulfonamide 3 followed by N-methylation with methyl iodide. The conformations of 5 and its precursor 4 are largely dependent on the solvent, and the solvent effect is inhibited by protonation or metalation of the porphyrin cores.