High temperature nucleation and growth of glutathione protected ~Ag75 clusters.
We report the first high temperature solution state synthesis of glutathione (-SG) protected atomically precise silver clusters. Noble metal cluster synthesis from metal ions generally requires ice cold temperatures as they are extremely sensitive and high temperature routes are used only for core reduction methods, starting from nanoparticles. The clusters formed by the new route have distinct features in their absorption profile and they exhibit red luminescence. They are characterised by other spectroscopic and microscopic techniques and a tentative formula of Ag(75)(SG)(40) has been assigned.
DST Unit of Nanoscience, Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, India.
Indranath
I
Chakraborty
Thumu
T
Udayabhaskararao
Thalappil
T
Pradeep
D005978:Glutathione / Q000737:chemistry*; D006358:Hot Temperature; D008024:Ligands; D053758:Nanoparticles / Q000737:chemistry; D012834:Silver / Q000737:chemistry*; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
D008024:Ligands; D012834:Silver; D005978:Glutathione