In-situ measurement of the photooxidization process of alkanethiol self-assembled monolayers using Dual-channel Quartz Crystal Microbalance

Takashi Abe, Hiroshi Kato, Xinghua Li, Matsuhiko Nishizawa

Research output: Contribution to conferencePaperpeer-review

Abstract

We demonstrate in-situ measurement of the photooxidization process of alkanethiol self-assembled monolayers using a Dual-channel Quartz Crystal Microbalance (D-QCM) sensor that uses spherically contoured resonators to acoustically separate sensing channels for simultaneous compensation of environmental disturbances. Using a photolithographic method to make the D-QCM, the reference channel used in parallel with the sensing channel has almost the same resonant frequency and temperature coefficient of frequency. As a result, mass changes of 10-pg order accuracy were observed under strong ultraviolet radiation over 4 days. Using the D-QCM, we can success to measure photoconversion from thiolate to sulfonate during UV irradiation

Original languageEnglish
Pages1330-1332
Number of pages3
Publication statusPublished - 2006 Jan 1
Event10th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2006 - Tokyo, Japan
Duration: 2006 Nov 52006 Nov 9

Other

Other10th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2006
Country/TerritoryJapan
CityTokyo
Period06/11/506/11/9

Keywords

  • Dual-channel
  • Microfabrication
  • Photooxidization
  • QCM
  • SAM

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Bioengineering

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