Photoluminescence Properties of Graphene Oxide in Non‐Aqueous Solvents

Abstract

AbstractDetailed attention to the interaction between graphene oxide (GO) and various organic fluorophores has been documented in literature as a result of which the impact of GO on the photophysical properties of the fluorophores is well known to the scientific community. However, the photoluminescence (PL) properties of GO in polar aprotic solvents are yet to be established. In this article, the PL properties of GO in polar aprotic solvents using various spectroscopic techniques have been reported. n‐π* transition due to the C=O bonds in the sp3 hybrid regions and π‐π* transition due to C=C bonds in the sp2 hybrid are prominent in GO. The presence of quasi‐molecules within sp2‐sp3 domains acts as PL centers located in the sp3 matrixes of GO are responsible for the PL properties. This study showcases the presence of multiple emissive states of GO in polar aprotic solvents and conveys the fact that the PL properties of GO are very much wavelength‐dependent.