A simple synthetic method is proposed to stabilize anisotropic gold nanoparticles possessing a strong and broad absorption band in the presence of cross-linked poly(N-isopropylacrylamide) nanoparticles.  The structural properties and the stability of the composite materials were thoroughly characterized by UV-visible spectrophotometer, scanning and transmission electron microscopes, and dynamic light scattering, infrared spectrometer, and Raman spectroscopy.  The extended stability of these anisotropic nanoparticles was presumably achieved by van der Waals interactive forces between the gold and polymer nanoparticles.  Due to the strong absorption property and high surface-to-volume ratio, these nanocomposites showed fast reversible structural volume changes upon exposure to broad band light. As such, these composites may serve as an excellent template for the development of photothermally triggered delivery systems.

Extended stability of anisotropic gold nanoparticles by poly(N-isopropylacrylamide) nanoparticles

246th National Meeting (2013)

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