Chemical class specificity using self-assembled monolayers on SAW devices
- Sandia National Labs., Albuquerque, NM (United States)
- Texas A and M Univ., College Station, TX (United States). Dept. of Chemistry
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.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 242667
- Report Number(s):
- SAND-96-1408C; CONF-960673-5; ON: DE96011819; CNN: CHE-9312441
- Resource Relation:
- Conference: Solid-state sensor and actuator workshop, Hilton Head, SC (United States), 2-6 Jun 1996; Other Information: PBD: [1996]
- Country of Publication:
- United States
- Language:
- English
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