title: Assemblies of ionic zinc chlorins assisted by water-soluble polypeptides.
abstract: Artificial chlorophyll-peptide complexes were prepared by mixing ionic chlorophyll derivatives and oligopeptides in aqueous media containing a small amount of organic solvent. The pigment-peptide complexes provided chlorophyll assemblies showing a sharp red-shifted Qy absorption band concomitant with giant circular dichroism signals. The polypeptide-assisted assemblies of chlorophyllous pigments would afford a good model for photosynthetic apparatuses such as pigment-protein complexes of light-harvesting antennas.
authors: Department of Materials Chemistry, Ryukoku University, Otsu, Shiga 520-2194, Japan; Innovative Materials and Processing Research Center, Ryukoku University, Otsu, Shiga 520-2194, Japan. Electronic address: miyatake@rins.ryukoku.ac.jp.
authors: Tomohiro
authors: T
authors: Miyatake
authors: Department of Materials Chemistry, Ryukoku University, Otsu, Shiga 520-2194, Japan.
authors: Yuki
authors: Y
authors: Hasunuma
authors: Department of Materials Chemistry, Ryukoku University, Otsu, Shiga 520-2194, Japan.
authors: Yumi
authors: Y
authors: Mukai
authors: Department of Materials Chemistry, Ryukoku University, Otsu, Shiga 520-2194, Japan.
authors: Hisato
authors: H
authors: Oki
authors: Department of Materials Chemistry, Ryukoku University, Otsu, Shiga 520-2194, Japan.
authors: Mikiya
authors: M
authors: Watanabe
authors: Department of Materials Chemistry, Ryukoku University, Otsu, Shiga 520-2194, Japan.
authors: Shohei
authors: S
authors: Yamazaki
mesh_terms: D002734:Chlorophyll / Q000031:analogs & derivatives*; D002942:Circular Dichroism; D008027:Light; D008665:Metalloporphyrins / Q000737:chemistry*; D010455:Peptides / Q000737:chemistry*; D010788:Photosynthesis; D012995:Solubility; D014867:Water / Q000737:chemistry
chemical_list: D008665:Metalloporphyrins; D010455:Peptides; C558702:zinc chlorin; D014867:Water; D002734:Chlorophyll
keywords: Chlorophylls; Circular dichroism; Light-harvesting antenna; Polypeptides; Reaction center; Self-aggregation