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Title: Sorptive Behavior of Monolayer-Protected Gold Nanoparticle Films: Implications for Chemical Vapor Sensing

Abstract

Monolayer-protected gold nanoparticle materials were synthesized and characterized for use as sorptive layers on chemical sensors. Thiols investigated as monolayer-forming molecules included dodecanethiol, benzenethiol, 4-chlorobenzenethiol, 4-bromobenzenethiol, 4-trifluoromethylbenzenethiol, 4-hydroxybenzenethiol, and 4-aminobenzenethiol. Films of selected monolayer protected nanoparticle (MPN) materials were deposited on thickness shear mode (TSM) devices and vapor uptake properties were measured at 298K. Many, but not all, PMN-based sensing layers demonstrated rapid and reversible uptake of vapors, and sorptive selectivity varies with the monolayer structure. The mass of vapor sorbed per mass of sorptive material was determined and compared with sorptive polymers. Estimated partition coefficients of the MPN materials are comparable to those of polymer layers. To the extent that MPN-coated chemiresistor vapor sensors give lower detection limits than polymer-coated vapor sensors such as surface acoustic wave vapor sensors, as has been reported, such performance likely results from better signal-to-noise per sorbed vapor molecule rather than greater vapor sorption by the MPN materials.

Authors:
 [1];  [1];  [1]
  1. BATTELLE (PACIFIC NW LAB)
Publication Date:
Research Org.:
Pacific Northwest National Lab., Richland, WA (US), Environmental Molecular Sciences Laboratory (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
15004814
Report Number(s):
PNNL-SA-37446
3450; TRN: US200405%%19
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Journal Article
Journal Name:
Analytical Chemistry
Additional Journal Information:
Journal Volume: 75; Journal Issue: 8; Other Information: PBD: 15 Apr 2003
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 47 OTHER INSTRUMENTATION; ACOUSTIC MEASUREMENTS; GOLD; PERFORMANCE; POLYMERS; SENSITIVITY; SHEAR; SORPTION; THICKNESS; THIOLS; SORPTIVE PROPERTIES; PROTECTIVE COATINGS; MONITORS; ENVIRONMENTAL MOLECULAR SCIENCES LABORATORY, MONOLAYER; VAPOR SENSING; NANOPARTICAL

Citation Formats

Grate, Jay W, Nelson, David A, and Skaggs, Rhonda L. Sorptive Behavior of Monolayer-Protected Gold Nanoparticle Films: Implications for Chemical Vapor Sensing. United States: N. p., 2003. Web. doi:10.1021/ac0206364.
Grate, Jay W, Nelson, David A, & Skaggs, Rhonda L. Sorptive Behavior of Monolayer-Protected Gold Nanoparticle Films: Implications for Chemical Vapor Sensing. United States. https://doi.org/10.1021/ac0206364
Grate, Jay W, Nelson, David A, and Skaggs, Rhonda L. Tue . "Sorptive Behavior of Monolayer-Protected Gold Nanoparticle Films: Implications for Chemical Vapor Sensing". United States. https://doi.org/10.1021/ac0206364.
@article{osti_15004814,
title = {Sorptive Behavior of Monolayer-Protected Gold Nanoparticle Films: Implications for Chemical Vapor Sensing},
author = {Grate, Jay W and Nelson, David A and Skaggs, Rhonda L},
abstractNote = {Monolayer-protected gold nanoparticle materials were synthesized and characterized for use as sorptive layers on chemical sensors. Thiols investigated as monolayer-forming molecules included dodecanethiol, benzenethiol, 4-chlorobenzenethiol, 4-bromobenzenethiol, 4-trifluoromethylbenzenethiol, 4-hydroxybenzenethiol, and 4-aminobenzenethiol. Films of selected monolayer protected nanoparticle (MPN) materials were deposited on thickness shear mode (TSM) devices and vapor uptake properties were measured at 298K. Many, but not all, PMN-based sensing layers demonstrated rapid and reversible uptake of vapors, and sorptive selectivity varies with the monolayer structure. The mass of vapor sorbed per mass of sorptive material was determined and compared with sorptive polymers. Estimated partition coefficients of the MPN materials are comparable to those of polymer layers. To the extent that MPN-coated chemiresistor vapor sensors give lower detection limits than polymer-coated vapor sensors such as surface acoustic wave vapor sensors, as has been reported, such performance likely results from better signal-to-noise per sorbed vapor molecule rather than greater vapor sorption by the MPN materials.},
doi = {10.1021/ac0206364},
url = {https://www.osti.gov/biblio/15004814}, journal = {Analytical Chemistry},
number = 8,
volume = 75,
place = {United States},
year = {2003},
month = {4}
}