Robust gold nanoparticles stabilized by trithiol for application in chemiresistive sensors

Details

• Personal Author:
  Fedder GK ; Garg N ; Jin R ; Lazarus N ; Mohanty A ; Rozzi TR ; Santhanam S ; Schultz L ; Snyder JL ; Weiss L
• Description:
  The use of gold nanoparticles coated with an organic monolayer of thiol for application in chemiresistive sensors was initiated in the late 1990s; since then, such types of sensors have been widely pursued due to their high sensitivities and reversible responses to volatile organic compounds (VOCs). However, a major issue for chemical sensors based on thiol-capped gold nanoparticles is their poor long-term stability as a result of slow degradation of the monothiol-to-gold bonds. We have devised a strategy to overcome this limitation by synthesizing a more robust system using Au nanoparticles capped by trithiol ligands. Compared to its monothiol counterpart, the new system is significantly more stable and also shows improved sensitivity towards different types of polar or non-polar VOCs. Thus, the trithiol-Au nanosensor shows great promise for use in real world applications. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety Solvents
• Keywords:
  Gases Monitoring-systems Monitors Nanotechnology Organic-compounds Vapors Volatiles
• ISSN:
  0957-4484
• Document Type:
  Text
• Funding:
  Contract
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  NPPTL - National Personal Protective Technology Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  21
• Issue:
  40
• NIOSHTIC Number:
  nn:20037711
• Citation:
  Nanotechnology 2010 Oct; 21(40):405501
• Contact Point Address:
  Jay L Snyder, National Institute for Occupational Safety and Health (NIOSH), Pittsburgh, PA 15236, USA
• Email:
  zpx5@cdc.gov
• Federal Fiscal Year:
  2011
• Performing Organization:
  Carnegie Mellon Univiversity
• Peer Reviewed:
  True
• Source Full Name:
  Nanotechnology
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:47bbd79178cfb1baa2f6cf91416ec838c9f50ba9b2747075e3cfd079e01ab1eb8086bfb2a7c84f967723e6a115709941ad90dd039f167104f73d811fae229a37
• Download URL:
  https://stacks.cdc.gov/view/cdc/191704/cdc_191704_DS1.pdf
• File Type:
  [PDF - 503.04 KB ]