Journal
CHEMICAL VAPOR DEPOSITION
Volume 19, Issue 10-12, Pages 338-346Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cvde.201307055
Keywords
Biosensor applications; Gold nanoparticles; OMCVD; Silanization
Funding
- NSERC BiopSys Strategic Network
- Ontario Graduate Scholarship Program
- Canadian Government
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The growth of surface-immobilized gold nanoparticles with organometallic (OM)CVD on amine-terminated surfaces, utilizing a (trimethylphospine)methylgold ((CH3)(3)PAuCH3) precursor is described. Samples fabricated using various deposition times are characterized by UV-vis spectroscopy and scanning electron microscopy (SEM). Particle stability on the samples is tested by washing and rinsing treatments with various organic solvents. A biotin-streptavidin scheme is applied to demonstrate the biosensing capabilities of the samples. The size, interparticle distance, and shape of the gold nanoparticles demonstrates that OMCVD is a simple, economic, and fast way of fabricating surface-bonded and stable gold nanoparticles. The plasmonic properties, the stability of the particles, and the biotin-streptavidin test show that these OMCVD-grown gold nanoparticles are suitable for reproducible, low noise, and highly sensitive biosensing applications.
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