Photothermal Conversion Material of Nano Violet Tungsten Oxide

iolet tungsten oxide exhibits a strong, tunable localized surface plasmon resonance effect, which results in its light absorption in the near infrared region. Based on this light absorption property, photothermal conversion material of nano violet tungsten oxide is successfully prepared. It has application value in the treatment of cancer.

As hyperthermia has the characteristics of minimally invasive, small radiation and easy operation, it has been widely used. Among the many hyperthermia technologies, near infrared thermotherapy is more concerned. It is a kind of technology that transforms near infrared light, which has the advantages of deep tissue penetration and low tissue damage, into heat energy for the treatment.

At present, gold nanostructured material (such as gold nanorod, gold nanosphere and gold nanocage) is a kind of near-infrared photothermal conversion material that attracts much attention from people. However, the preparation process of gold nanostructured material is complicated. Meanwhile, gold is an expensive metal and is not conducive to application. Therefore, it is necessary to develop a new cost-effective photothermal conversion material.

Violet tungsten oxide is an excellent semiconductor material. It exhibits a strong, tunable localized surface plasmon resonance effect, which results in its light absorption in the near infrared region. Based on this light absorption property, photothermal conversion material of nano violet tungsten oxide can be prepared successfully and be used for cancer treatment. During the preparation process, tungsten source (tungstate) and organic solvent (alcohol solvent) are used as raw materials.

As for the preparation cost of nano violet tungsten oxide, it is lower than that of gold nanostructured material. In terms of preparation process, the preparation method of nano violet tungsten oxide is relatively simple. And less equipment is needed in the preparation process. Therefore, nano violet tungsten oxide is a cost-effective photothermal conversion material. It has broad application prospects in the field of infrared thermotherapy.

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