Nano aggregates of molecular ultra small clusters of noble metals and a process for the preparation thereof
AssigneeCouncil of Scientific and Industrial Research
InventorArti Harle
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Abstract
The present invention discloses size controlled and stabilized nano-aggregates of molecular ultra small clusters of noble metals and a process for the preparation thereof. The present invention discloses single source multicolor noble metal spherical and uniform nano aggregates of 10-22 nm made up of discrete molecular ultra small noble metal (Nb) nanoclusters (MUSNbNC's) of 1-6 atoms. The MUSNbNC's are capped with amine/DCA (dicarboxy acetone) group acting as a steric and kinetic hindrance for core growth suppressing the further autocatalysis and conversion of super critical nucleus or growth by ripening and formation of nanoparticles and thus having intense fluorescence.
Claims10
Capped Spherical nano aggregates of size 10-22 nm comprising:
- molecular ultra small clusters of 1-6 atoms of noble metals selected from the group consisting of Au, Ag, Pt and Pd, and said clusters of 1-6 atoms being stabilized by a capping agent forming, d nano aggregates showing UV emission at 300-335 nm, no plasma resonance and visible 2nd harmonic emission at 590-650 nm.
Dependencies are inferred from the claim text.