A fascinating multifunctional bis(2-(4, 5-diphenyl-1H-imidazol-2-yl)phenoxy)nickel complex: An excellent electrode material for supercapacitor and uric acid sensor. (October 2019)

• Record Type: Journal Article
• Authors: Elaiyappillai, Elanthamilan; Umesh, N.; Srinivasan, Rajkumar; Merlin, J. Princy; Wang, Sea-Fue
• Is Part Of: Materials research bulletin. Volume 118(2019)
• Publication Date: 2019-10
• Subjects: Ni-trisubstituted imidazole complex -- Sensor -- Cyclic voltammetry -- Supercapacitor -- Specific capacitance; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2019.05.007
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Addition of Ni(II) to DIP (NDIP) increases the Csp value two fold higher than the DIP monomer. Highlights: A simple, eco-friendly, synthetic method for DIP and NDIP was reported. The as- synthesized NDIP was evaluated for the supercapacitor and sensor application. The incorporation of Ni (II) in DIP increases the specific capacitance of NDIP. (625 F/g) almost two times higher than that of DIP (325 F/g). NDIP showed a high selectivity and good responsiveness towards Uric Acid detection. Abstract: In the present work, nickel-trisubstituted imidazole complex, bis(2-(4, 5-diphenyl-1 H -imidazol-2-yl)phenoxy)nickel complex, abbreviated as NDIP was prepared by chemical method and its application as an electrode for supercapacitor was demonstrated. The structure and composition of the as-synthesized NDIP was confirmed by various spectral and analytical tools and further it was examined for its sensing and supercapacitor applications. NDIP coated working electrode delivered the specific capacitance of 712 F/g at the current density of 1 A/g and capacitance retention of 87% upto 2000 GCD cycles. The developed sensor was explored to detect Uric Acid. The response for amperometric detection of UA on NDIP displayed a wide linear range (0.1 nm – 1031 μM) with low detection limit (0.412 μM). Furthermore, NDIP@GCE electrode showed a high selectivity and good responsiveness towards UA detection.