Photochemical reactions of ketones to synthesize gold nanorods.
Photochemical synthesis of gold nanorods (NRs) in a micellar solution of hexadecyltrimethylammonium bromide (CTAB) was triggered by photoreactions of ketones. Photoexcitation of gold ions and silver bromide clusters ((AgBr)n) in the absence of ketones did not produce NRs. The initial products of the photoirradiation were probably ketyl radicals, which then initiated reactions to form NRs. NRs formed in darkness, if the reaction solutions were irradiated by UV light for a few minutes, thus indicating that the photochemical products catalyzed NR-formation.
Nishioka
Koji
K
Department of Materials Physics and Chemistry, Graduate School of Engineering, Kyushu University, Moto-oka, Fukuoka 819-0395, Japan.
Niidome
Yasuro
Y
Yamada
Sunao
S