Photoluminescent graphene oxide particles (PGOPs) were synthesized by hydrothermal treatment. The relative transmission spectra of the PGOPs in the infrared region between 800 cm?1 and 4000 cm?1 showed frequencies that characterize chemical species such as ethers (C[sbnd]O), ketones (CO[dbnd]), carboxylic acids (COOH), double bonds of carbon (C[dbnd]C) and water (H2O). The emission wavelengths were 568 nm for graphene oxide with green photoluminescence (GOGP) and 634 nm for graphene oxide with orange photoluminescence (GOOP) when excited with a light source of 375 nm. Moreover, the detection of light emission at 600 nm in the photoluminescent excitation (PLE) spectrum is detected with more intensity in GOGP than GOOP due to the presence of groups C[dbnd]C and carboxylates ions ([sbnd]COO?) linked to graphene (GN) and the photon effective emission time according to the decay profile for e...