title: Bacteriochlorophyll aggregates in positively charged micelles.
abstract: Micellar complexes were prepared from bacteriochlorophyll a and bacteriopheophytin a with the cationic detergents, cetyltrimethyl ammonium bromide and cetylpyridinium chloride. These complexes have spectroscopic properties (absorption, circular dichroism) which are very different from the ones formed with non-ionic detergents like Triton X-100, and also with anionic detergents. Bacteriochlorophyll a forms two complexes: One is blue-shifted and has excitonically coupled Qy transitions. The second one is extremely red-shifted. The unusual properties are suggested to result from interactions of the positively charged head-group of the detergent with the tetrapyrrole.
authors.affiliation: Botanisches Institut, Universität München, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Gottstein
authors.forename: A
authors.initials: A
authors.lastname: Scherz
authors.forename: H
authors.initials: H
authors.lastname: Scheer
mesh_terms: D001429:Bacteriochlorophylls / Q000737:chemistry*; D003902:Detergents; D008823:Micelles
chemical_list: D001429:Bacteriochlorophylls; D003902:Detergents; D008823:Micelles