Development of Modified Silica Nanoparticles Working as a Heat Source under Microwave Irradiation

Abstract

The synthesis of imidazolium-presenting silica nanoparticles and the role as a heating source under microwave irradiation are described here. The series of modified nanoparticles with various kinds of counter anions were prepared, and their enhancement abilities of heating under microwave irradiation were compared. Finally, it was summarized that the dielectric loss originated from the interaction between imidazolium cation and water molecules should play a crucial role in the heating effect. Next, based on the modified nanoparticles, thermal enzyme deactivation by the imidazolium-presenting silica nanoparticles with the microwave irradiation is presented. The modified nanoparticles were synthesized, and it was observed that the modified nanoparticles can be a heat source in the buffer under the weak-power microwave irradiation. Finally, based on the heat-generating ability of these nanoparticles, deactivation of glutathione reductase and alkaline phosphatase with the modified nanoparticles were demonstrated.