Silica-Coated Gold Nanoparticles

The distinct optical properties of gold nanoparticles (AuNPs) enable them to be appliedin diverse fields ranging from biomedical engineering to photovoltaics. However, uncoated AuNPs get aggregated in solution and tend to melt when subjected to laser irradiation, causing a notable impact on their optical characteristics.

To address this issue, their surface can be functionalized using chemicals like silica. AuNPs coated withsilica deliver exceptional stability and functionality under a broad range of biological, physicaland environmental conditions. Merck offers silica-coated AuNPs with a range of dimensions and fluorescence emission to satisfy a wide range of applications.

Applications

Cell tracking

Targeted drug delivery

Photoacoustic imaging

Dual- and multi-modal imaging

Multiplex imaging

Surface-enhanced Raman spectroscopy

Biomolecular probes

Two-photon imaging

Photonics

Catalysis