Stability and biocompatibility of photothermal gold nanorods after lyophilization and sterilization

- Morphological changes are observed for CTABr capped gold nanorods over time.
- Polystyrenesulfonate (PSS) and polyethyleneglycol (PEG) coated nanorods are stable.
- Re-suspendible and sterilizable colloids are prepared using those capping agents.
- Those materials are efficient heat sinks potentially used in photothermal therapy.