The effects of pH and lonic strength on the aggregation of bacteriochlorophll c in aqueous organic media: The posibility of two kinds of aggregates

From: Photochemistry and Photobiology | Date: November 1, 1999| Author: | Copyright information

ABSTRACT

The aggregation behavior of two homologs of bacteriochlorophyll c (BChI c) in various media was investigated for the effects of pH and salt, and the corresponding structures were analyzed by Fourier transform (FT)-IR spectroscopy. R-[P, El BChI c^sub F^ (3^sup 1^-R-form of BChI c with a propyl group at the C-8 position and an ethyl group at the C-12 position) and R-[E, El BChl CF (3^sup 1^-R-form of BChl c with two ethyl groups at positions C-8 and C-12) were isolated from the green sulfur bacterium Morobium limicola. Aggregates of each homolog showed a pHdependent shift of the ...

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