Abstract
Conversion of light energy to heat via photothermal conversion agents (PTCAs) is of great interest and has potential applications. Here, we described a heptamethine cyanine (Cy7) dye nanoparticles (Cy7-PEG NPs) prepared from heptamethine cyanine and poly(ethylene glycol) (PEG400) via a simple solvothermal process as novel PTCA. Cy7-PEG NPs have absorption maximum at about 808 nm and good photothermal conversion ability. Upon irradiation, Cy7-PEG NPs can effectively kill living mosquito larva (Aedes albopictus) through heat generation. Furthermore, Cy7-PEG NPs have excellent phototoxic activity to Sf9, HeLa and MCF-7 cells. Our results indicated that Cy7-PEG NPs can be used as controlling agent for mosquito larvae and cancer cells.
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