Stabilization of gold nanoparticles on glass surface with polydopamine thin film for reliable LSPR sensing

Journal of Colloid and Interface Science
Hongming ChenWeihua Hu

Abstract

Localized surface plasmon resonance (LSPR) arising on noble metal plasmonic nanostructures has demonstrated compelling applications for label-free and in situ biosensing. A widely-used format for LSPR biosensing is to adsorb pre-synthesized plasmonic colloids on transparent substrates and track their surface plasmon band wavelength and/or intensity changes upon biomolecular binding or dissociation. However, this format suffers from the optical instability of the supported plasmonic colloids, which mainly originates from the detachment and/or aggregation of the supported colloids. In this work we report a novel strategy to stabilize the supported plasmonic colloids, with gold nanoparticles (AuNPs) as a model, on amine-functionalized glass for reliable plasmonic biosensing. In this strategy, polydopamine (PDA), a mussel-inspired polymeric thin film was explored to coat the AuNPs-attached glass by using a simple immersion reaction. The PDA thin film not only prevents the supported AuNPs from detaching or aggregating, but also allows for facile immobilization of biological probes for further plasmonic biosensing. Meanwhile, the refractive index (RI)-sensitivity of the coated AuNPs was essentially preserved by optimizing the thickne...Continue Reading

References

Aug 24, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Ronald ZirbsWolfgang H Binder
Sep 29, 2006·The Journal of Physical Chemistry. B·Kyeong-Seok Lee, Mostafa A El-Sayed
Jan 4, 2007·Journal of the American Chemical Society·Irit Ruach-NirIsrael Rubinstein
Oct 20, 2007·Science·Haeshin LeePhillip B Messersmith
Jan 31, 2008·Chemical Reviews·Matthew E StewartRalph G Nuzzo
Jan 15, 2009·Journal of the American Chemical Society·Jacqueline FerreiraEmerson M Girotto
Jan 23, 2009·Biosensors & Bioelectronics·Jiun-Chan YangDale N Larson
Aug 5, 2009·Journal of the American Chemical Society·Srinivas R Beeram, Francis P Zamborini
Sep 23, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Alberto F Scarpettini, Andrea V Bragas
Dec 14, 2011·Analytical Chemistry·Giuliano BellapadronaIsrael Rubinstein
Jun 12, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Rebecca A ZangmeisterMichael J Tarlov
Oct 11, 2013·Analytical Chemistry·Yulia ChaikinIsrael Rubinstein
Jul 6, 2014·Journal of Colloid and Interface Science·Weihua HuChang Ming Li

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Citations

Jun 3, 2016·Journal of Colloid and Interface Science·Daqun ChenWeihua Hu
Jun 9, 2017·Biomaterials Science·Rahila BatulAimin Yu
Feb 2, 2021·Critical Reviews in Food Science and Nutrition·Swarup Roy, Jong-Whan Rhim

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