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Glucose detection using 4-mercaptophenyl boronic acid-incorporated silver nanoparticles-embedded silica-coated graphene oxide as a SERS substrate

Glucose detection using 4-mercaptophenyl boronic acid-incorporated silver nanoparticles-embedded... Abstract In this work, 4-mercaptophenyl boronic acid (4-MPBA) was self-assembled on the surface of silver nanoparticle-embedded silica-coated graphene oxide (GO@SiO2@Ag NPs@MPBA) to detect glucose by surface enhanced Raman scattering (SERS). The SERS intensity of 4-MPBA on the GO@SiO2@Ag NPs was 2.2-fold greater than that of GO@Ag NPs. Moreover, silica-coated GO exhibited lower background signals compared to GO. The SERS intensity of GO@SiO2@Ag NPs@MPBA peaked at 1 mM 4-MPBA. pH-dependent behavior of 4-MPBA on the GO@SiO2 @Ag NPs was investigated; the highest SERS signal intensity was detected at pH 3. The binding of glucose to 4-MPBA-incorporated GO@SiO2@Ag NPs increased the SERS signals at both 1,072 and 1,588 cm-1. The linear range was estimated from 2 to 20 mM glucose. These results provide insight into detection of glucose and the development of SERS-based biosensors using graphene oxide. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png BioChip Journal Springer Journals

Glucose detection using 4-mercaptophenyl boronic acid-incorporated silver nanoparticles-embedded silica-coated graphene oxide as a SERS substrate

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References (68)

Publisher
Springer Journals
Copyright
2016 The Korean BioChip Society and Springer-Verlag Berlin Heidelberg
ISSN
1976-0280
eISSN
2092-7843
DOI
10.1007/s13206-016-1107-6
Publisher site
See Article on Publisher Site

Abstract

Abstract In this work, 4-mercaptophenyl boronic acid (4-MPBA) was self-assembled on the surface of silver nanoparticle-embedded silica-coated graphene oxide (GO@SiO2@Ag NPs@MPBA) to detect glucose by surface enhanced Raman scattering (SERS). The SERS intensity of 4-MPBA on the GO@SiO2@Ag NPs was 2.2-fold greater than that of GO@Ag NPs. Moreover, silica-coated GO exhibited lower background signals compared to GO. The SERS intensity of GO@SiO2@Ag NPs@MPBA peaked at 1 mM 4-MPBA. pH-dependent behavior of 4-MPBA on the GO@SiO2 @Ag NPs was investigated; the highest SERS signal intensity was detected at pH 3. The binding of glucose to 4-MPBA-incorporated GO@SiO2@Ag NPs increased the SERS signals at both 1,072 and 1,588 cm-1. The linear range was estimated from 2 to 20 mM glucose. These results provide insight into detection of glucose and the development of SERS-based biosensors using graphene oxide.

Journal

BioChip Journal – Springer Journals

Published: Mar 1, 2017

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