Abstract
Lanthanide (such as Eu and Tb) coordination polymers (CPs) having various coordination modes and unique fluorescence properties can be used as highly sensitive chemical sensors. We synthesized a europium-based CP of Eu2(PEDA)3(H2O)4 (referred to as Eu-PEDA, PEDA = 1,2-phenylenediacetic acid group), and investigated its application in fluorescence detection. Eu-PEDA can be considered as a multifunctional fluorescent probe for sensing malachite green (MG), ascorbic acid (AA) and uric acid (UA) to achieve rapid fluorescence quenching response, and Eu-PEDA exhibited high quenching efficiency Ksv (6.21 × 105 M−1 for MG; 1.16 × 104 M−1 for AA; 1.02 × 104 M−1 for UA), low detection limit (MG: 0.050 μM; AA: 0.705 μM; UA: 0.965 μM). Furthermore, Eu-PEDA suspension dipping test strips, the Eu-PEDA test strips are obtained. The resultant test strip, shows the potential for directly visual detection of MG, AA and UA just by dripping the analytes on it. This work thus offers a facile and efficient strategy for rapid and visual detection of MG, AA and UA by Eu-based coordination compounds. In addition, the possible mechanisms of fluorescence quenching were studied by absorption spectra, the emission and excitation spectra.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
