FT-IR Studies on the Aggregation of Bacteriochlorophyll cfrom Chlorobium limicola

Autor: Uehara, Kaku, Ozaki, Yukihiro, Okada, Kouichi, Olson, John M
Zdroj: Chemistry Letters; June 1991, Vol. 20 Issue: 6 p909-912, 4p
Abstrakt: Aggregates of three homologs of bacteriochlorophyll cfrom Chlorobium limicolain water-saturated carbon tetrachloride and in solid films were studied by means of FT-IR. Four keto-carbonyl stretching peaks were observed at 1703, 1682-4, 1649-51, and 1641-3 cm−1corresponding to free C=O (monomer), free C=O (dimer, tetramer), coordinated C=O (dimer, tetramer), and coordinated C=O (polymer), respectively.
Databáze: Supplemental Index