Surface coordination chemistry of YBa2Cu3O7-δ

Feng Xu, Kaimin Chen, Richard D. Piner, Chad A. Mirkin, Jason E. Ritchie, John McDevitt, Michael O. Cannon, David Kanis

Research output: Contribution to journalArticle

Abstract

The surface coordination chemistry of the cuprate superconductor. YBa2Cu3O7-δ has been extensively surveyed using cyclic voltammetry in conjuction with a series of redox-active ferrocenyl containing adsorbate molecules. Evidence supporting the adsorpotion of molecules with primary alkylamine, secondary alkylamine, tertiary alkylamine, arylamine, thiol, disulfide, and selenol functionalities is reported. Cyclic voltammetry, atomic force microscopy, scanning electron microscopy, X-ray powder diffraction and resistivity vs temperature measurements were utilized to evaluate the influence of the modification conditions on the bulk and surface properties of the high-Tc superconductor. The spontaneous adsorption of redox-active alkylamines, arylamines, and thiols onto the surfaces of cuprate materials has been shown to produce stable and robust monolayer films with no apparent damage to the bulk properties of the underlying superconductors. Of the molecules studied thus far, primary alkylamines have been determined to be the optimum adsorbates based upon surface coverage values and monolayer durability. Tertiary alkylamines form monolayers on YBa2Cu3O7-δ with an electrochemical persistence comparable to primary alkylamine monolayers, suggesting that hydrogen binding with the surface is not necessary for adsorption We propose that amines act as Lewis bases and bind to Lewis acidic Cu surface site(s) in YBa2Cu3O7-δ to form stable coordination bondi(s).

Original languageEnglish (US)
Pages (from-to)6505-6511
Number of pages7
JournalLangmuir
Volume14
Issue number22
StatePublished - Oct 27 1998

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chemistry
Monolayers
Adsorbates
Sulfhydryl Compounds
thiols
cuprates
Superconducting materials
Cyclic voltammetry
Molecules
Lewis Bases
Adsorption
molecules
Lewis base
adsorption
disulfides
durability
Temperature measurement
Disulfides
X ray powder diffraction
surface properties

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Xu, F., Chen, K., Piner, R. D., Mirkin, C. A., Ritchie, J. E., McDevitt, J., ... Kanis, D. (1998). Surface coordination chemistry of YBa2Cu3O7-δ. Langmuir, 14(22), 6505-6511.

Surface coordination chemistry of YBa2Cu3O7-δ. / Xu, Feng; Chen, Kaimin; Piner, Richard D.; Mirkin, Chad A.; Ritchie, Jason E.; McDevitt, John; Cannon, Michael O.; Kanis, David.

In: Langmuir, Vol. 14, No. 22, 27.10.1998, p. 6505-6511.

Research output: Contribution to journalArticle

Xu, F, Chen, K, Piner, RD, Mirkin, CA, Ritchie, JE, McDevitt, J, Cannon, MO & Kanis, D 1998, 'Surface coordination chemistry of YBa2Cu3O7-δ', Langmuir, vol. 14, no. 22, pp. 6505-6511.
Xu F, Chen K, Piner RD, Mirkin CA, Ritchie JE, McDevitt J et al. Surface coordination chemistry of YBa2Cu3O7-δ. Langmuir. 1998 Oct 27;14(22):6505-6511.
Xu, Feng ; Chen, Kaimin ; Piner, Richard D. ; Mirkin, Chad A. ; Ritchie, Jason E. ; McDevitt, John ; Cannon, Michael O. ; Kanis, David. / Surface coordination chemistry of YBa2Cu3O7-δ. In: Langmuir. 1998 ; Vol. 14, No. 22. pp. 6505-6511.
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