Chemical class specificity using self-assembled monolayers on SAW devices

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We have studied the chemical selectivity and sensitivity of surface acoustic wave (SAW) sensors covered by (COO{sup {minus}}){sub 2}/Cu{sup 2+}-terminated interfaces by examining the response of self-assembled monolayer (SAM) films formed from the solution phase for 36, 84, and 180 h adsorption times. These organomercaptan SAMs were prepared on thin-film Au surfaces having variable, controlled grain size. The SAW response from the carboxylate coordinated Cu{sup 2+}-terminated SAM is compared to that from methyl-terminated SAM, as these films interact with a vapor-phase organophosphonate analyte and the vapors of common organic solvents. Results have implications for designing and reliably fabricating chemical sensors ... continued below

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4 p.

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Thomas, R.C.; Ricco, A.J.; Yang, H.C.; Dermody, D. & Crooks, R.M. June 1, 1996.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

We have studied the chemical selectivity and sensitivity of surface acoustic wave (SAW) sensors covered by (COO{sup {minus}}){sub 2}/Cu{sup 2+}-terminated interfaces by examining the response of self-assembled monolayer (SAM) films formed from the solution phase for 36, 84, and 180 h adsorption times. These organomercaptan SAMs were prepared on thin-film Au surfaces having variable, controlled grain size. The SAW response from the carboxylate coordinated Cu{sup 2+}-terminated SAM is compared to that from methyl-terminated SAM, as these films interact with a vapor-phase organophosphonate analyte and the vapors of common organic solvents. Results have implications for designing and reliably fabricating chemical sensors that respond to specific organic analytes.

Physical Description

4 p.

Notes

OSTI as DE96011819

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  • Solid-state sensor and actuator workshop, Hilton Head, SC (United States), 2-6 Jun 1996

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  • Other: DE96011819
  • Report No.: SAND--96-1408C
  • Report No.: CONF-960673--5
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 242667
  • Archival Resource Key: ark:/67531/metadc673290

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  • June 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Aug. 23, 2016, 2:55 p.m.

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Thomas, R.C.; Ricco, A.J.; Yang, H.C.; Dermody, D. & Crooks, R.M. Chemical class specificity using self-assembled monolayers on SAW devices, article, June 1, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc673290/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.