Surface-Enhanced Raman Scattering Substrates Based on Self-Assembled PEGylated Gold and Gold–Silver Core–Shell Nanorods

2013 ◽  
Vol 117 (44) ◽  
pp. 23162-23171 ◽  
Author(s):  
Boris N. Khlebtsov ◽  
Vitaly A. Khanadeev ◽  
Mikhail Yu. Tsvetkov ◽  
Victor N. Bagratashvili ◽  
Nikolai G. Khlebtsov
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Core Shell ◽  
Gold Silver ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Self Assembled ◽  
Silver Core

scholarly journals Glucose Detection of 4-Mercaptophenylboronic Acid-Immobilized Gold-Silver Core-Shell Assembled Silica Nanostructure by Surface Enhanced Raman Scattering

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 948
Author(s):  
Xuan-Hung Pham ◽  
Bomi Seong ◽  
Eunil Hahm ◽  
Kim-Hung Huynh ◽  
Yoon-Hee Kim ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Calibration Curve ◽  
Core Shell ◽  
Glucose Detection ◽  
Gold Silver ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Sers Detection ◽  
Enhanced Raman Scattering ◽  
Silver Core

The importance of glucose in many biological processes continues to garner increasing research interest in the design and development of efficient biotechnology for the sensitive and selective monitoring of glucose. Here we report on a surface-enhanced Raman scattering (SERS) detection of 4-mercaptophenyl boronic acid (4-MPBA)-immobilized gold-silver core-shell assembled silica nanostructure (SiO2@Au@Ag@4-MPBA) for quantitative, selective detection of glucose in physiologically relevant concentration. This work confirmed that 4-MPBA converted to 4-mercaptophenol (4-MPhOH) in the presence of H2O2. In addition, a calibration curve for H2O2 detection of 0.3 µg/mL was successfully detected in the range of 1.0 to 1000 µg/mL. Moreover, the SiO2@Au@Ag@4-MPBA for glucose detection was developed in the presence of glucose oxidase (GOx) at the optimized condition of 100 µg/mL GOx with 1-h incubation time using 20 µg/mL SiO2@Au@Ag@4-MPBA and measuring Raman signal at 67 µg/mL SiO2@Au@Ag. At the optimized condition, the calibration curve in the range of 0.5 to 8.0 mM was successfully developed with an LOD of 0.15 mM. Based on those strategies, the SERS detection of glucose can be achieved in the physiologically relevant concentration range and opened a great promise to develop a SERS-based biosensor for a variety of biomedicine applications.

Core–Shell Gold@Silver Nanorods of Varying Length for High Surface-Enhanced Raman Scattering Enhancement

2018 ◽  
Vol 1 (10) ◽  
pp. 5589-5600 ◽  
Author(s):  
Gourab Bhattacharjee ◽  
Maireyee Bhattacharya ◽  
Abhijit Roy ◽  
Dulal Senapati ◽  
Biswarup Satpati
Keyword(s):  
Raman Scattering ◽  
High Surface ◽  
Surface Enhanced Raman Scattering ◽  
Core Shell ◽  
Silver Nanorods ◽  
Gold Silver ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Varying Length ◽  
Enhanced Raman Scattering
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