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 E_{g +} (E_RedOx-E_CB). This process involves the exergonic non-radiative transfer of E_CB electron to E_RedOx and the concomitant radiative emission of a second electron that has gained E_RedOx-E_CB 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.