A new ternary ruthenium(III) complex with 1,3-bis(salicylideneamino) propan-2-ol and 3-picolylamine: Synthesis, characterization, density functional theory and preparation of electrochemical sensor for nitrite analysis

Abstract

To cite this version:Achour Terbouche, Chafia Ait-Ramdane-Terbouche, Safia Djebbar, Djamila Guerniche, Radia Bagtache, et al.. A new ternary ruthenium(III) complex with 1,3-bis(salicylideneamino) propan-2-ol and 3-picolylamine: Synthesis, characterization, density functional theory and preparation of electrochemical sensor for nitrite analysis.. Journal of Molecular Structure, Elsevier, 2014, 1076A new ternary ruthenium (III) complex with 1,3-bis (salicylideneamino) propan-2-ol and 3picolylamine: Synthesis, characterization, density functional theory and preparation of electrochemical sensor for nitrite analysis. AbstractA novel electrochemical sensor based on graphite (G) functionalised with a new ternary ruthenium (III) complex was developed and applied to detect nitrite in aqueous solution. The Ru (III) complex was synthesized using 1,3-bis(salicylideneamino) propan-2-ol polydentate Schiff base (BSAP) and 3-Picolylamine (PLA), and was characterized by elemental analysis, Fourier transform infrared spectroscopy (FT-IR), Ultraviolet-visible spectrophotometry (UV-Visible), gradient-assisted hetero nuclear single quantum coherence spectroscopy (gHSQC) and cyclic voltammetry technique. In addition, the structure of the synthesized complex was optimized using density functional theory (DFT). The results showed that the ternary Ru(III)-BSAP-PLA complex was formed and the adapted structure was an tetrahedral geometry.The electrochemical behavior of nitrite at the sensor prepared using G/Ru(III)-BSAP-PLA composite shows that the evaluated electron transfer coefficient ( 83 . 0 = α ) indicates a very significant electrocatalytic mechanism for oxidation of nitrite in the presence of the Ru(III)-BSAP-PLA complex.Comparing to other published works, the sensor developed using G/Ru(III)-BSAP-PLA exhibited low limit of detection ( LOD=1.81 µM) around pH=7. Highlights• Ternary ruthenium(III) complex with 1,3-bis(salicylideneamino) propan-2-ol polydentate base Schiff (BSAP) and 3-Picolylamine (PLA) was synthesized, characterized and the structure was optimized using density functional theory.• Graphite-Ru(III)-BSAP-PLA composite material was prepared and characterized by scanning electron microscopy coupled with energy dispersive spectroscopy (SEM-EDS).• Cavity microelectrode (CME) was modified with graphite-Ruthenium(III)-BSAP-PLA material.• Substantial electro catalytic effect of ruthenium(III)-BSAP-PLA complex on oxidation of nitrite was determined by using CME/G/Ru(III)-BSAP-PLA modified electrode.

A new electrochemical sensor based on carbon paste electrode/Ru(III) complex for determination of nitrite: Electrochemical impedance and cyclic voltammetry measurements

“…By comparing our result with previous studies [54], within the same pH range (2 to 4.12), we find that the current of the oxidation peak of nitrite increases at the surface of CPE/Ru(III)-BSAP-PLA electrode and decreases at the modified cavity microelectrode.…”

“…By referring to the Tafel equation, defining a totally irreversible electrochemical process [66], and assuming that the oxidation of nitrite involves the transfer of two electrons, the electron transfer coefficient determined was α=0.89. A comparison between this value and that found in a previous study (α=0.83), using the modified cavity microelectrode [54], reveals that the electro-catalytic mechanism of oxidation of nitrite occurs better on the surface of our carbon paste electrode modified with Ru(III) complex.…”

“…propan-2-ol, 3-picolylamine and Ru(III) chloride hydrate in acetone [54]. The formed dark precipitate was then collected and wached with deionized water.…”

“…The main objective of the present work was to compare the efficiency of CPE/Ru(III)-BSAP-PLA sensor towards NO 2 -with the previously developed sensor using modified cavity microelectrode [54].…”

Electrocatalytic self-assembled film of a dinucler Ru(II) complex for highly selective and sensitive nitrite detection

“…Fig. 2 shows the amperometric responses of (PPS/RuL) 5 2 ] 10 À } 6 (PEI ¼polyethylenimine) multilayer film coated ITO electrode [12] and 10 μM for a ruthenium Schiff base complex modified electrode [13]. Fig.…”