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Issue 13, 2017
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m-Cresol purple functionalized surface enhanced Raman scattering paper chips for highly sensitive detection of pH in the neutral pH range

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Abstract

Herein, a pH sensitive paper SERS chip was prepared by selecting m-cresol purple, a molecule with halochromic properties in the neutral pH range as a Raman reporter. The adsorbed m-cresol purple underwent a reversible change in its electronic configuration from a non-resonant species to a resonant species, which resulted in a significant Raman signal intensity variation due to the transformation of the sensing mode from SERS to surface-enhanced resonance Raman scattering (SERRS). The chips have a sensitive pH range of 6.0 to 8.0 and exhibited good performance for the detection of natural water samples with detection precision of approximately 0.03 pH units, suggesting great potential for environmental pH monitoring applications.

Graphical abstract: m-Cresol purple functionalized surface enhanced Raman scattering paper chips for highly sensitive detection of pH in the neutral pH range

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Publication details

The article was received on 19 Apr 2017, accepted on 13 May 2017 and first published on 17 May 2017


Article type: Communication
DOI: 10.1039/C7AN00653E
Citation: Analyst, 2017,142, 2333-2337
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    m-Cresol purple functionalized surface enhanced Raman scattering paper chips for highly sensitive detection of pH in the neutral pH range

    X. Zou, Y. Wang, W. Liu and L. Chen, Analyst, 2017, 142, 2333
    DOI: 10.1039/C7AN00653E

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