Self-induced porphyrin dimer formation via unusual atropisomerization of tetraphenylporphyrin derivative

Article abstract of DOI:10.1016/0040-4039(95)01819-4

Atropisomerization of meso-tetrakis(2-carboxy-4-nonylphenyl)porphyrin 1, in nonpolar solvents such as CHCl₃ gives the αααα isomer exclusively, while the same isomerization in polar solvents such as DMSO proceeds normally. Spectroscopic investig