A caged platinum nanocluster complex is disclosed.
The complex comprises (a) an amine-terminated dendrimer; and (b) a platinum nanocluster comprising platinum oxides, the platinum nanocluster being confined inside of the amine-terminated dendrimer.
A double-caged platinum nanocluster complex is also disclosed, which comprises polyethylene glycol (PEG) coated on the surface of a dendrimer caged platinum nanocluster complex.
Also disclosed is a method for producing such a luminescent silicon nanocluster.
Further disclosed is an agent for labeling biological substances, which uses the luminescent silicon nanocluster.
This results in rapid solubilization of the salts, precipitation of the nanoaggregate, and tooth remineralization.
The composition or nanoaggregate may be present as an emulsion, droplet, mincelle, liposome, nanoparticle or nanocapsule.
The present invention discloses a nano-cluster that includes a plurality of nano-particles, wherein the nano-particles can disperse in response to an environmental cue.
The nanoaggregate (or nanocomposite) can release calcium, phosphate, and fluoride, and ultimately convert to the tooth mineral, fluorapatite.
Tooth fluoridation and remineralization may also be carried out by applying to the tooth a non-aqueous carrier containing the nanoaggregate.
With proper treatment, biogenic silica nanoaggregate (25-30 nm in diameter) can be synthesized from biomass materials.
The nanoaggregate embedded bead may be used in methods to detect analytes or pathogens in biological or environmental samples using Raman spectroscopy.