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Scientific article
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Preparation of Anisotropic and Oriented Particles on a Flexible Substrate

Published inLangmuir, vol. 31, no. 48, p. 13221-13229
Publication date2015
Abstract

Elongated plasmonic nanoparticles show superior optical properties when compared to spherical ones. Facile, versatile and cost-effective bottom-up approaches for fabrication of anisotropic nanoparticles in solution have been developed. However, fabrication of 2-D plasmonic templates from elongated nanoparticles with spatial arrangement at the surface is still a challenge. We used controlled seed-mediated growth in the presence of porous and functionalized surface of flexible polydimethylsiloxane (PDMS) templates to provide directional growth and formation of elongated gold nanoparticles (AuNPs). Atomic force microscopy (AFM) and spectroscopy revealed embedding of the particles within the functionalized porous surface of PDMS. Nanoparticles shapes were observed with transmission electron microscope (TEM), UV–Vis spectroscopy, and X-ray powder diffraction (XRPD) measurements, which revealed an overall orientation of particles at the surface. Anisotropic and oriented particles on a flexible substrate are of interest for sensing applications.

Citation (ISO format)
CHEKINI, Mahshid et al. Preparation of Anisotropic and Oriented Particles on a Flexible Substrate. In: Langmuir, 2015, vol. 31, n° 48, p. 13221–13229. doi: 10.1021/acs.langmuir.5b03524
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ISSN of the journal0743-7463
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