On the energy transfer in Bi2WO6: ERedOx-assisted radiative recombination in O2 and ROS sensing. prospective

Abstract

Photoluminescence maximum emission signal of colloids based on Bi2WO6 suspended in an aqueous solution is blue-shifted as compared to its band gap according to Eg + (ERedOx-ECB). This process involves the exergonic non-radiative transfer of ECB electron to ERedOx and the concomitant radiative emission of a second electron that has gained ERedOx-ECB energy presumably by electrons energy levels entanglement induced via simultaneous light excitement of multiple electrons. These results constitute evidence for energy transfer with application in sensing electrolyte-electron-acceptors as reactive oxygen species that may be implemented for example in cancer and aortic dissection detection and treatment.