Chemistry Letters, Vol.37, No.5, 532-533, 2008
Self-aggregation of synthetic zinc chlorophyll derivatives possessing fluoroalkyl chains in liquid carbon dioxide as models of green photosynthetic bacterial antennae
Zinc chlorophyll derivatives possessing (multi)-perfluoroalkyl chain(s) in the 17-propionate residue were dissolved in liquid carbon dioxide to form their oligomers (=J-aggregates), while the alkyl-type analog was insoluble in the medium. These results indicated solubilization and stabilization of their supramolecules by an interaction between the perfluoroalkyl substituents and liquid carbon dioxide.