nl4014315_si_001.pdf (1.14 MB)
Enhanced Photothermal Effect of Plasmonic Nanoparticles Coated with Reduced Graphene Oxide
journal contribution
posted on 2013-09-11, 00:00 authored by Dong-Kwon Lim, Aoune Barhoumi, Ryan G. Wylie, Gally Reznor, Robert S. Langer, Daniel S. KohaneWe report plasmonic gold nanoshells
and nanorods coated with reduced
graphene oxide that produce an enhanced photothermal effect when stimulated
by near-infrared (NIR) light. Electrostatic interactions between nanosized
graphene oxide and gold nanoparticles followed by in situ chemical
reduction generated reduced graphene oxide-coated nanoparticles; the
coating was demonstrated using Raman and HR-TEM. Reduced graphene
oxide-coated gold nanoparticles showed enhanced photothermal effect
compared to noncoated or nonreduced graphene oxide-coated gold nanoparticles.
Reduced graphene oxide-coated gold nanoparticles killed cells more
rapidly than did noncoated or nonreduced graphene oxide-coated gold
nanoparticles.