Langmuir · 2011 · 70 citations · 41 references
EngineeringMaterials EngineeringMaterials ScienceBiosensorsNanomaterialsNanotechnologyNanomaterial CharacterizationNanomaterial-based BiosensorsNanoparticle CharacterizationOptical BiosensingPlasmonic NanomaterialsPlasmonicsBioassay DevelopmentGold Nanoparticle BiosensorsGold NanostructuresMethod Detection LimitNanoparticlesPlasmonic BiosensingPlasmonic BiosensorsPlasmonic Dimers
In this study, gold nanoparticles (GNP) were stabilized for the first time as dimers by a conducting polymer (CP). The morphology of kissing particles was examined by high-resolution transmission electronic microscopy (HRTEM). The broad-band localized surface plasmon resonance (LSPR) tunable by solvent variation and molecular binding was demonstrated by UV-vis measurement. The sensitivity of the longitudinal LSPR to the surrounding media or the binding of a biomolecule was 6 times higher than that of the transversal LSPR. A homogeneous bioassay was directly developed from the highly stable GNP-CP dimers with LSPR as prober, and protein sensing with detection limit well below 100 ng/mL was achieved.
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A Hybridization Model for the Plasmon Response of Complex Nanostructures
Emil Prodan, Corey Radloff, Naomi J. Halas et al. · Science · 2003 · 4K citations
Plasmon Hybridization in Nanoparticle Dimers
Peter Nordlander, Chris Oubre, Emil Prodan et al. · Nano Letters · 2004 · 1.7K citations
Natural Sciences, Chemistry, Computational Electromagnetics +15