Induced CD from chiral Schiff base metal complexes involving azo-dye groups to gold nanoparticles

Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka,

Shinjuku-ku, Tokyo 162-8601, Japan

E-mail : akitsu@rs.kagu.tus.ac.jp Fax : 81-3-5261-4631

Manuscript received 02 October 2017, revised 12 November 2017, accepted 14 November 2017

We reported on synthesis, characterization, and docking of supramolecular systems of azo-group containing chiral salen-type Schiff base Ni^II, Cu^II and Zn^II complexes and colloidal gold nanoparticles (AuNPs) of 10 nm diameters. Appropriate conditions enabled some of them to exhibit induced CD from chiral species adsorbed on the surface of AuNPs. We have compared differences of dipole-dipole interactions of cis-trans isomerization as well as coordination geometries of these complexes associated with induce CD spectra around plasmon region. This optical features will be promising light absorption mechanism of dyes for solar cells developing new concept of organic/inorganic hybrid functional materials.