Photochemical Reactions of Ketones to Synthesize Gold Nanorods

• Published in: Langmuir Vol. 23; no. 20; pp. 10353 - 10356
• Main Authors: Nishioka, Koji, Niidome, Yasuro, Yamada, Sunao
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 25.09.2007
• Subjects: Catalysis; Chemistry; Colloidal state and disperse state; Exact sciences and technology; General and physical chemistry; Micelles. Thin films; Photochemistry; Physical chemistry of induced reactions (with radiations, particles and ultrasonics); Surface physical chemistry; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Quaternary ammonium compound; Catalytic reaction; Synthesis; Transition element compounds; Cationic surfactant; Gold ion; Photochemical reaction; Silver bromide; Micellar solution; Ionic surfactant; Ketone
• ISSN: 0743-7463; 1520-5827
• DOI: 10.1021/la7015534

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.