• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2005 Fiscal Year Final Research Report Summary

Photoinduced Deracemization with Weak Interaction by Chiral Ruthenium(II) Complex

Research Project

Project/Area Number 16550063
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Inorganic chemistry
Research InstitutionOkinawa National College of Technology

Principal Investigator

HAMADA Taisuke  Okinawa National College of Technology, Department of Bioresources Engineering, Professor, 生物資源工学科, 教授 (10253717)

Project Period (FY) 2004 – 2005
Keywordschiral ruthenium / deracemization / photochemical reaction / electron transfer
Research Abstract

A deracemization is the very effective method to obtain optical active compounds, however, there are few reports of the photo deracemization, which consists of the enantioselective reduction and oxidation with a photo sensitizer. Therefore, a photo sensitizer for the photo deracemization was designed in this research. The tris-bipyridine type ruthenium(II) complex was employed for the photo sensitizer, which possesses the enantioselective ability. The camphamoyl group was introduced into bipyridine ligand through the ester bond as an optically active group. This chiral bipyridine ligand was used for the novel ruthenium(II) photo sensitizer. Two ruthenium(II) complexes, mono(chiral bipyridine) ruthenium(II) complex and bis(chiral bipyridine) ruthenium(II) complex were newly synthesized.
The photochemical and electrochemical properties of these ruthenium (II) complexes were investigated, and it was shown that these complexes could act as a photo sensitizer. These ruthenium (II) complexes were used as a photo sensitizer for the photo reduction of the chiral cobalt (III) complex. The cobalt (III) complex was reduced enantioselectively, and it is clear that these ruthenium(II) complexes can be used as a photo sensitizer for the photo deracemization. In addition, the enantioselective the energy transfer from the chiral ruthenium (II) complex to chiral osmium(II) complex was investigated to obtain knowledge about an enantioselection with a weak interaction.
These ruthenium(II) complexes would be applied for the photo deracemization of the metal complexes, and that of organic compounds.

URL: 

Published: 2007-12-13  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi