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Chromic materials for responsive surface-enhanced resonance Raman scattering systems: a nanometric pH sensor.
Phys Chem Chem Phys. 2009 Sep 14; 11(34):7505-8.PC

Abstract

The use of chromic materials for responsive surface-enhanced resonance Raman scattering (SERRS) based nanosensors is reported. The potential of nano-chromic SERRS is demonstrated with the use of the halochrome methyl yellow to fabricate an ultrasensitive pH optical sensor. Some of the challenges of the incorporation of chromic materials with metal nanostructures are addressed through the use of computational calculations and a comparison to measured SERRS and surface-enhanced Raman scattering (SERS) spectra is presented. A strong correlation between the measured SERRS and the medium's proton concentration is demonstrated for the pH range 2-6. The high sensitivity achieved by the use of resonance Raman conditions is shown through responsive SERRS measurements from only femtolitres of volume and with the concentration of the reporting molecules approaching the single molecule regime.

Authors+Show Affiliations

Instituto de Química USP, São Paulo, Av. Prof. Lineu Prestes, São Paulo, SP 05508-000, Brazil.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19690726

Citation

Ando, Rômulo A., et al. "Chromic Materials for Responsive Surface-enhanced Resonance Raman Scattering Systems: a Nanometric pH Sensor." Physical Chemistry Chemical Physics : PCCP, vol. 11, no. 34, 2009, pp. 7505-8.
Ando RA, Pieczonka NP, Santos PS, et al. Chromic materials for responsive surface-enhanced resonance Raman scattering systems: a nanometric pH sensor. Phys Chem Chem Phys. 2009;11(34):7505-8.
Ando, R. A., Pieczonka, N. P., Santos, P. S., & Aroca, R. F. (2009). Chromic materials for responsive surface-enhanced resonance Raman scattering systems: a nanometric pH sensor. Physical Chemistry Chemical Physics : PCCP, 11(34), 7505-8. https://doi.org/10.1039/b904747f
Ando RA, et al. Chromic Materials for Responsive Surface-enhanced Resonance Raman Scattering Systems: a Nanometric pH Sensor. Phys Chem Chem Phys. 2009 Sep 14;11(34):7505-8. PubMed PMID: 19690726.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Chromic materials for responsive surface-enhanced resonance Raman scattering systems: a nanometric pH sensor. AU - Ando,Rômulo A, AU - Pieczonka,Nicholas P W, AU - Santos,Paulo S, AU - Aroca,Ricardo F, Y1 - 2009/07/29/ PY - 2009/8/20/entrez PY - 2009/8/20/pubmed PY - 2009/10/20/medline SP - 7505 EP - 8 JF - Physical chemistry chemical physics : PCCP JO - Phys Chem Chem Phys VL - 11 IS - 34 N2 - The use of chromic materials for responsive surface-enhanced resonance Raman scattering (SERRS) based nanosensors is reported. The potential of nano-chromic SERRS is demonstrated with the use of the halochrome methyl yellow to fabricate an ultrasensitive pH optical sensor. Some of the challenges of the incorporation of chromic materials with metal nanostructures are addressed through the use of computational calculations and a comparison to measured SERRS and surface-enhanced Raman scattering (SERS) spectra is presented. A strong correlation between the measured SERRS and the medium's proton concentration is demonstrated for the pH range 2-6. The high sensitivity achieved by the use of resonance Raman conditions is shown through responsive SERRS measurements from only femtolitres of volume and with the concentration of the reporting molecules approaching the single molecule regime. SN - 1463-9076 UR - https://www.unboundmedicine.com/medline/citation/19690726/Chromic_materials_for_responsive_surface_enhanced_resonance_Raman_scattering_systems:_a_nanometric_pH_sensor_ L2 - https://doi.org/10.1039/b904747f DB - PRIME DP - Unbound Medicine ER -