Premium
Self‐Assembly of Synthetic Zinc Chlorins in Aqueous Microheterogeneous Media to an Artificial Supramolecular Light‐Harvesting Device
Author(s) -
Miyatake Tomohiro,
Tamiaki Hitoshi,
Holzwarth Alfred R.,
Schaffner Kurt
Publication year - 1999
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/(sici)1522-2675(19990609)82:6<797::aid-hlca797>3.0.co;2-9
Subject(s) - chemistry , supramolecular chemistry , aqueous medium , zinc , aqueous solution , artificial photosynthesis , self assembly , combinatorial chemistry , nanotechnology , photochemistry , organic chemistry , photocatalysis , molecule , catalysis , materials science
Self‐assembled aggregates of a synthetic zinc chlorin in an aqueous suspension with either α ‐lecithin or Triton X‐100 exhibit unique structural and functional properties. Absorption, circular dichroism, fluorescence, and resonance Raman spectra indicate that the supramolecular structure in an aqueous microheterogeneous medium is very similar to that of the bacteriochlorophyll c aggregates in non‐polar organic solvents and in chlorosomes, the main light‐harvesting antennae of green photosynthetic bacteria. The nature of the aggregates is controlled by structure and/or concentration of the added surfactants. When a small amount of metal‐free bacteriochlorin is present it acts as an efficient energy acceptor from the aggregated zinc chlorins. Thus, self‐assembly of synthetic zinc chlorins, doped with appropriate energy acceptors and surrounded with surfactants, affords an artificial supramolecular light‐harvesting device in aqueous environment.