Surface immobilized heteroleptic copper compounds as state variables that show negative differential resistance

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

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Surface immobilized bidentate heteroleptic Cu(I) compounds are synthesized using a surface outward sequential synthesis and are characterized using solid-state NMR and atomic force microscopy (AFM). Through use of chemical redox agents, the reversible switching characteristics of SiO2-immobilized Cu(I) compounds (tetrahedral) to Cu(II) (square planar) are verified via UV-visible absorption spectroscopy and electron paramagnetic resonance. Electrical properties of this system are characterized via preparation of a sandwichtype device using p+ silicon and conductive AFM (cAFM). Current-Voltage (I-V) spectroscopy demonstrates that this system reproducibly switches between Cu(I) and Cu(II) states at approximately -0.8 and 2.3 V.

Original languageEnglish
Pages (from-to)589-593
Number of pages5
JournalJournal of Physical Chemistry Letters
Volume1
Issue number3
DOIs
Publication statusPublished - 2010 Feb 4

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physical and Theoretical Chemistry

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