Abstract
AbstractAs a bio‐nanomaterial with low toxicity, Ag2S has attracted more and more attention due to its intensive absorption of near‐infrared (NIR) light. Meanwhile, it has become a novel and excellent photothermal transduction agent due to its local surface plasma resonance effect. However, little research is conducted with respect to the influences of factors such as shapes on photothermal property. In this paper, a novel and convenient strategy is proposed to prepare three shapes of Ag2S (i.e., hollow nanospheres, nanoplates, and porous nanoplates), and their formation mechanisms are revealed through various characterizations. Furthermore, the in vitro capabilities of hollow Ag2S nanospheres are compared with nanoplates and porous nanoplates as photothermal transduction agents for theranostic applications. All these Ag2S nanostructures can absorb and convert 808 nm NIR light into heat. Among them, porous Ag2S nanoplates possess the highest photothermal conversion efficiency, whereas hollow Ag2S nanospheres have the maximum temperature difference. In addition, hollow Ag2S nanospheres exhibit the highest cellular uptake and the best treatment effect. Combined, it can be concluded that hollow Ag2S nanospheres are promising candidates for cancer treatment.
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