In 2016, Tao and co-workers reported an isostructural dinuclear complex using the derivative of the ligand L13 without an OH substituent group to avoid keto-to-enol transition . Temperature-dependent PL measurements of the complex 20 and ligand L14 were carried out in the temperature range of 300 -80 K. PL spectra at room temperature revealed emission maxima centered at 515 and 466 nm for 20 and L14 respectively, indicating the effect of metal coordination on the ligand system. Upon increasing the temperature from 80 to 300 K, PL spectra of 20 displayed a blue shift of 18 nm in the emission maxima. The emission intensity varies in a wavelike nature with three maxima between 80 and 95 K, 125 and 135 K, and 145 and 190 K, respectively. These changes are around three-step SCO temperature, suggesting a synergic correlation between SCO and luminescence in 20.