ArticleAnalytica chimica acta2013
Chemisorption assembly of Au nanorods on mercaptosilanized glass substrate for label-free nanoplasmon biochip.
Article in Analytica chimica acta, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 30 citations in OpenAlex.
- Ultrasensitive Molecular Detection at Subpicomolar Concentrations by the Diffraction Pattern Imaging with Plasmonic Metasurfaces and Convex Holographic Gratings.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2022Article
- Design and Synthesis of Novel Raman Reporters for Bioorthogonal SERS Nanoprobes Engineering.International journal of molecular sciences · 2022Article
- Amplified plasmonic and microfluidic setup for DNA monitoring.Mikrochimica acta · 2021Article
- Gold Nanorods for LSPR Biosensing: Synthesis, Coating by Silica, and Bioanalytical Applications.Biosensors · 2020Review
- Surface-Plasmon-Coupled Fluorescence Enhancement Based on Ordered Gold Nanorod Array Biochip for Ultrasensitive DNA Analysis.Analytical chemistry · 2017Article
- Comparison of four methods for the biofunctionalization of gold nanorods by the introduction of sulfhydryl groups to antibodies.Beilstein journal of nanotechnology · 2017Article
- Gold Nanorod Array Biochip for Label-Free, Multiplexed Biological Detection.Methods in molecular biology (Clifton, N.J.) · 2017Article
- Multiplexed gold nanorod array biochip for multi-sample analysis.Biosensors & bioelectronics · 2015Article
- Article
- Quantification of cardiac biomarkers using label-free and multiplexed gold nanorod bioprobes for myocardial infarction diagnosis.Biosensors & bioelectronics · 2014Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
The fabrication of a localized surface plasmon resonance nanosensor in a chip based format that utilizes Au nanorods (GNRs) as the optical transducer were systematically studied. (3-mercaptopropyl)trimethoxysilane (MPTMS) modified glass substrate offers GNR deposition with maximal sensitivity to local refractive index changes, which subsequently results in better optical recognition of receptor-analyte binding. Kinetics governing the mass transport and chemisorption of nanorods from bulk to solid surface can be dynamically controlled in a predictable fashion. We demonstrate that slight aggregation induced by a low ionic strength (5 mM NaCl) can facilitate the nanorod assembly to result in a dense, well-distributed surface monolayer. In high ionic media (e.g. 40-80 mM), anions present electrostatically bind with the positively charged cetyltrimethylammonium bromide (CTAB) surrounding nanorod surfaces, thereby leading to instability with heavy aggregation in solution. However, once chemically bound on silanized substrates, the nanorods exhibit excellent stability in physiological buffer where high amount of ionic species are present. The fundamental study is followed by demonstration of a practical application of the fabricated biochip in label-free detection based on GNR wavelength shift of the longitudinal palsmon maxima as the optical signature of human IgG model detection.
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