Photochemical induced growth and aggregation of metal nanoparticles in diode-array spectrophotometer via excited dimethyl-sulfoxide.
Ag(0) and Au(0) nanoparticles suspended in dilute aqueous solutions containing (CH(3))(2)SO are photochemically unstable. The light source of a diode-array spectrophotometer induces, within less than a minute, particle growth and aggregation. The results indicate that this process is triggered by UV light absorption by the (CH(3))(2)SO.
Zidki
Tomer
T
Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva, Israel. zidki@bgu.ac.il
Cohen
Haim
H
Meyerstein
Dan
D
D004121:Dimethyl Sulfoxide / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D010777:Photochemistry; D012834:Silver / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
D012834:Silver; D006046:Gold; D004121:Dimethyl Sulfoxide