Issue 8, 2012
From the journal:

Analyst

Organic isocyanide-adsorbed gold nanostructure: a SERS sensory device for indirect peak-shift detection of volatile organic compounds

Kwan Kim,*a   Ji Won Lee,a   Dongha Shin,a   Jeong-Yong Choia  and  Kuan Soo Shin*b  

* Corresponding authors

a Department of Chemistry, Seoul National University, Seoul 151-742, Korea
E-mail: kwankim@snu.ac.kr
Fax: +82-2-8891568
Tel: +82-2-8806651

b Department of Chemistry, Soongsil University, Seoul 156-743, Korea
E-mail: kshin@ssu.ac.kr
Fax: +82-2-8144076
Tel: +82-2-8200436

Abstract

Organic isocyanide adsorbed on a noble metal nanostructure can be used as a platform for a volatile organic compound (VOC) sensor operating via surface-enhanced Raman scattering (SERS). This is possible since the NC stretching band of organic isocyanides such as 2,6-dimethylphenylisocyanide (2,6-DMPI) is very susceptible to the surface potential of Au onto which 2,6-DMPI is assembled. The surface potential of Au nanoparticles is even subject to change by VOCs, which can be easily monitored by the SERS of 2,6-DMPI. Thereby, under the flow of CCl4 vapor at a partial pressure of 12.8 kPa, for instance, the NC stretching band is blue-shifted by up to 20 cm−1 within 30 s, corresponding to a potential change of +0.56 V. Conversely, under the flow of butylamine at 12.8 kPa, the NC stretching band is red-shifted, instead of being blue-shifted, by as much as 12 cm−1. At lower partial pressures, even a blue- or red-shift of 1 cm−1 was reproducibly measured at a partial pressure of 125 mPa, corresponding to 6.5 ppm for CCl4, suggesting that the present detection limit is superior to the results obtained via other techniques, especially those operating based on gold nanoparticles and aggregates.

Graphical abstract: Organic isocyanide-adsorbed gold nanostructure: a SERS sensory device for indirect peak-shift detection of volatile organic compounds

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C2AN16044G
Article type
Paper
Submitted
02 Nov 2011
Accepted
28 Jan 2012
First published
07 Mar 2012

Analyst, 2012,137, 1930-1936

Permissions

Request permissions

Organic isocyanide-adsorbed gold nanostructure: a SERS sensory device for indirect peak-shift detection of volatile organic compounds

K. Kim, J. W. Lee, D. Shin, J. Choi and K. S. Shin, Analyst, 2012, 137, 1930 DOI: 10.1039/C2AN16044G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements