| Summary: | Nanoparticles were synthesized and modified for target drug delivery. The research involved the aqueous synthesis of near infrared (NIR) sensitive Au-Au<sub>2</sub>S nanoparticles. An anti-cancer drug (<i>cis-platin</i>) was subsequently adsorbed onto the Au-Au<sub>2</sub>S nanoparticle surface via the 11-mercaptoundecanoic acid layers. The results showed that the degree of adsorption of cis-platin onto Au-Au<sub>2</sub>S nanoparticles was controlled by the pH value of solution, and the rate of drug release was sensitive to NIR irradiation. The results of the synthesis, drug-release properties and nanoparticle-cell interactions will be discussed.
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