Journal of the Iranian Chemical Society | 2021
A 1,10-phenanthroline fluorescence probe for real-time visualization of Ni2+
Abstract
In this study, a novel 1,10-phenanthroline skeleton-based fluorescence chemosensor (IPN) was prepared and applied to investigate the metal ions sensing properties. The sensor exhibited an exceptional selective fluorescence response toward Ni2+ combined with the characteristic of high sensitivity, excellent specificity and fast response. The IPN-Ni2+ complex was formed in the ratio of IPN/Ni2+ of 1/2. Introduction of Ni2+ induced the change of fluorescence emission spectra of IPN at 340 nm and 392 nm. Based on Job diagram analysis, frontier molecular orbital calculation and infrared spectrum analysis, the possible mechanism of fluorescence detection Ni2+ was proposed. Moreover, the cell imaging using IPN indicates that IPN is expected to be a useful probe for Ni2+ in broad biological application.