Heteroleptic copper switches

Sanaz Kabehie, Mei Xue, Adam Z. Stieg, Monty Liong, Kang L. Wang, Jeffrey I. Zink

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Heteroleptic copper compounds have been designed and synthesized on solid supports. Chemical redox agents were used to change the oxidation state of the SiO2-immobilized heteroleptic copper compounds from Cu(I) to Cu(II) and then back to Cu(I). Optical spectroscopy of a dimethyl sulfoxide suspension demonstrated the reversibility of the Cu(I)/Cu(II) SiO2-immobilized compounds by monitoring the metal-to-ligand charge transfer peak at about 450 nm. Electron paramagnetic resonance spectroscopy was used to monitor the isomerization of Cu(I) tetrahedral to Cu(II) square planar. This conformational change corresponds to a 90° rotation of one ligand with respect to the other. Conductive atomic force microscopy and macroscopic gold electrodes were used to study the electrical properties of a p+ Si-immobilized heteroleptic copper compound where switching between the Cu(I)/Cu(II) states occurred at -0.8 and +2.3 V.

Original languageEnglish
Pages (from-to)15987-15996
Number of pages10
JournalJournal of the American Chemical Society
Volume132
Issue number45
DOIs
Publication statusPublished - 2010 Nov 17

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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