Issue 20, 2012

Functionalized shell-isolated nanoparticle-enhanced Raman spectroscopy for selective detection of trinitrotoluene

Abstract

Shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS), which acts as the next generation of advanced spectroscopy, expands the versatility of surface-enhanced Raman spectroscopy (SERS). Here we present a facile one-step method to prepare functionalized core–shell nanoparticles for selective detection of trinitrotoluene (TNT) through the formation of Meisenheimer complexes. A well-designed type of tunable poly(2-aminothiophenol) (PAT) shells on gold nanoparticles was prepared for the first time and the shell thickness of 2 nm could be controlled by only adjusting the molar ratio of sodium dodecylsulfate (SDS) to 2-aminothiophenol. The polymer shells shows prominent advantages, including uniformity, better chemical stability, being free of pin-holes and amino-functionalized.

Graphical abstract: Functionalized shell-isolated nanoparticle-enhanced Raman spectroscopy for selective detection of trinitrotoluene

Supplementary files

Article information

Article type
Communication
Submitted
11 Jul 2012
Accepted
08 Aug 2012
First published
09 Aug 2012

Analyst, 2012,137, 4644-4646

Functionalized shell-isolated nanoparticle-enhanced Raman spectroscopy for selective detection of trinitrotoluene

K. Qian, H. Liu, L. Yang and J. Liu, Analyst, 2012, 137, 4644 DOI: 10.1039/C2AN35947B

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