Stimuli Responsive Release of Metalic Nanoparticles on Semiconductor Substrates

Optically active metal nanoparticles have been of recent and broad interest for applications to biomarker detection because of their ability to enable high sensitivity enhancements in various optical detection techniques. Here, we report stimuli responsive release of metallic nanoparticles on a semi...

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Bibliographic Details
Published in:Langmuir 2012-04, Vol.28 (14), p.5975-5980
Main Authors: Santiago-Cordoba, Miguel, Topal, Özge, Allara, David L, Kalkan, A. Kaan, Demirel, Melik C
Format: Article
Language:English
Subjects:
Base Sequence
Chemistry
Colloidal state and disperse state
DNA Probes - chemistry
DNA Probes - genetics
Exact sciences and technology
General and physical chemistry
Inverted Repeat Sequences
Metal Nanoparticles - chemistry
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Semiconductors
Silver - chemistry
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Summary:Optically active metal nanoparticles have been of recent and broad interest for applications to biomarker detection because of their ability to enable high sensitivity enhancements in various optical detection techniques. Here, we report stimuli responsive release of metallic nanoparticles on a semiconductor thin film array structure based on pH change. The metallic nanoparticles are obtained by a simple redox procedure on the semiconductor surface. This approach allows controlling nanoparticle surface coatings in situ for biomolecule conjugation, such as DNA probes on nanoparticles, and rapid stimuli responsive release of these nanoparticles upon pH change.
ISSN:0743-7463
1520-5827
DOI:10.1021/la3002256