Rhenium tricarbonyl complexes of AIE active tetraarylethylene ligands: tuning luminescence properties and HSA-specific binding

Dalton Trans. 2017 Nov 7;46(43):15040-15047. doi: 10.1039/c7dt03380j.

Abstract

The synthesis and photophysical properties of luminescent Re(i) tricarbonyl complexes prepared from bis(pyridyl)- and bis(quinolyl) tetraarylethylene (TAE) ligands are reported. Emission wavelengths of the complexes are influenced by structural variation in the tetraarylethylene ligands, and several complexes display aggregation-induced enhanced emission in aqueous solution. A Re(i) complex prepared from an indole-functionalized TAE ligand shows significant enhancement in its luminescence intensity accompanied by a remarkable blue shift (∼95 nm) upon specific binding to site II of human serum albumin.

MeSH terms

  • Coordination Complexes / chemical synthesis
  • Coordination Complexes / chemistry
  • Coordination Complexes / metabolism*
  • Crystallography, X-Ray
  • Humans
  • Indoles / chemistry
  • Ligands
  • Molecular Conformation
  • Protein Binding
  • Rhenium / chemistry*
  • Serum Albumin / chemistry
  • Serum Albumin / metabolism*
  • Spectrometry, Fluorescence

Substances

  • Coordination Complexes
  • Indoles
  • Ligands
  • Serum Albumin
  • Rhenium
  • indole