Synthesis, characterization and light harvesting properties of nickel(II) diimine dithiolate complexes

Spectrochim Acta A Mol Biomol Spectrosc. 2013 Nov:115:106-10. doi: 10.1016/j.saa.2013.06.022. Epub 2013 Jun 19.

Abstract

Four Ni(II) diimine dithiolato complexes viz. [Ni{(S2C2Ph2)(1,10-Phenanthroline)}] (2), [Ni{(S2C2Ph2)(3,3'-dicarboxy-2,2'-bipyridyl)}] (3), [Ni{(S2C2Ph2)(4,4'-dicarboxy-2,2'-bipyridyl)}] (4) [Ni{(S2C2Ph2)(2,2'-bipyridyl)}] (5) have been prepared from [Ni(S2C2Ph2)2] (1) and characterized by microanalyses, UV-Vis, IR, (1)H and (13)C NMR. Attempts have been made to explain the nature of charge transfer in these molecules through quantum chemical calculations. The light harvesting properties of all the compounds have been studied using these compounds as photosensitizers in TiO2-based DSSC. The change in position of anchoring group on diimine derivative leads to different structural, electronic and light harvesting properties about the Ni(II) diimine dithiolate dyes.

Keywords: DFT; Diimine; Dithiolate; Light harvesting; TiO(2).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption
  • Coloring Agents / chemistry
  • Coordination Complexes / chemical synthesis*
  • Coordination Complexes / chemistry
  • Electricity
  • Electrochemical Techniques
  • Electrons
  • Imines / chemical synthesis*
  • Imines / chemistry*
  • Light*
  • Magnetic Resonance Spectroscopy
  • Nickel / chemistry*
  • Spectrophotometry, Infrared
  • Sulfhydryl Compounds / chemical synthesis*
  • Sulfhydryl Compounds / chemistry*

Substances

  • Coloring Agents
  • Coordination Complexes
  • Imines
  • Sulfhydryl Compounds
  • Nickel