Salicylate Ion-Selective Electrode Based on New Tetranuclear Copper Complexes of O-Vannlin-methionine as Neutral Carriers

Ye, Guangrong; Yuan, Ruo; Zhou, Lu; Li, Yan; Zhang, Lina

doi:10.2116/analsci.23.171

Cited by 15 publications

(3 citation statements)

References 44 publications

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“…29 The membrane composition, properties of the employed solvent mediator and the plasticizer/PVC ratio are important criteria that affect both the selectivity and sensitivity of the proposed method. 30 It is beneficial to use new fabricated electrodes with competitive characteristics in order to analyze the pharmaceutical active constituents. Achieving this goal is critical where it can be accomplished by getting use of the characteristics of the composite materials as much as possible.…”

Section: Resultsmentioning

confidence: 99%

Potentiometric Sensing of Valaciclovir Hydrochloride in the Presence of Its Acid Induced Degradation Product with Real Time Acquisition of the Dissolution Profile from Its Pharmaceutical Formulations

Morgan¹,

El-Rahman²,

Lotfy³

et al. 2019

J. Electrochem. Soc.

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The possibility of obtaining continuous analytical signal excluding any pre-treatment of sample is the most environmental friendly method of analysis. In the current manuscript, a solid contact sensor was fabricated for dual purpose; firstly, determination of valaciclovir hydrochloride (VAL) in existence of its acid induced degradation product, Guanine (GUA) and secondly, real time acquisition of the dissolution profile from its pharmaceutical formulations (Valtrex) and (Valysernex). The sensing membrane was fabricated using a polyvinyl chloride (PVC), sodium tetraphenyl borate as a cation exchanger with bis (2-ethylhexyl) sebacate as a plasticizer. The proposed sensor displayed fast, stable Nernstian responses across VAL concentration range (1 × 10 −5 M to 1 × 10 −2 M). The opportunities of the proposed sensor with respect to other off-line classical techniques originates from being in-line, time saving, cost-effective, green and simple. ICH guidelines were followed to ensure validation of the proposed method concerning accuracy and precision.

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Section: Resultsmentioning

confidence: 99%

Potentiometric Sensing of Valaciclovir Hydrochloride in the Presence of Its Acid Induced Degradation Product with Real Time Acquisition of the Dissolution Profile from Its Pharmaceutical Formulations

Morgan¹,

El-Rahman²,

Lotfy³

et al. 2019

J. Electrochem. Soc.

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“…Recently, some electrodes prepared by incorporating different metallic complexes into PVC polymeric membranes have displayed relatively high selectivity toward salicylate [15][16][17][18][19][20][21][22][23]. However, some of these sensing carriers are toxic organotin complexes [17][18][19][20], some are nonstable cobalt complexes [21] and some are difficult to be synthesized [23]. Moreover, the electrodes based on these complexes exhibited somewhat poor potential response characteristics, such as sub-or super-Nernstian slope, narrow linear range, high detection limit, slow response time and so on.…”

Section: Introductionmentioning

confidence: 99%

Application of metalloporphyrin grafted-graphene oxide for the construction of a novel salicylate-selective electrode

Poursaberi¹,

Hassanisadi²

2012

J. Porphyrins Phthalocyanines

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Due to the vast applications of salicylate ion, development of a simple and selective procedure for its determination is of practical interest. Herein, the unique properties of graphene oxide are combined with the anion selectivity of metalloporphyrins to construct a novel salicylate selective electrode. This electrode is prepared by incorporating Cu(II)–5-4 (aminophenyl)-10,15,20-triphenyl porphyrin grafted-grapheneoxide (CuTPP-GO) into the plasticized poly (vinyl chloride) membrane. Effects of plasticizer nature, Cu TPP-GO concentration and anionic and cationic additives on the potential response of the electrode are investigated. The electrode with the membrane composition of 25% PVC, 50% NPOE, 5% NaTPB and 20% Cu TPP-GO provided the best behavior. This sensor shows a Nernstian response (57.8 mV.decade-1) in the concentration range of 5.0 × 10-1–5.0 × 10-7M with detection limit of 8.0 × 10-8M. sensor response is stable in the pH range of 5–7 and shows a discriminating ability for salicylate compared to most common anions. The sensor was successfully used for determination of salicylate in an aspirin tablet.

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“…Therefore, they have wide prospect of application [6]. On the other hand, because of high bioactivity, some Schiff base com plexes derived from amino acids become the hot research topics for years [7][8][9][10][11][12]. Recently, crystal juructures relating to the complexes of nickel with gly cine, L phenylanine, and 2 hydroxyl 1 naphthalde hyde have been reported [13], whereas those of nickel(II) with 2 acetylpyridine L tryptophan have not been found in the literature.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and crystal structure of a new nickel(II) coordination polymer based on Schiff base

Zhang

et al. 2012

Russ J Coord Chem

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A new Schiff base coordination polymer, [Ni(C 18 H 16 N 3 O 2 ) 2 ⋅ 2CH 3 OH] n (C 18 H 16 N 3 O 2 , 2 acetylpyridine L tryptophan), was synthesized and characterized by IR, UV, and X ray diffraction single crystal analysis. The crystal crystallizes in the tetragonal crystal system, space group P4 3 2 1 2 with cell param eters a = 11.8912(11), c = 28.822(3) Å, V = 4075.5(6) Å 3 , Z = 4, F(000) = 1544, S = 1.187, ρ calcd = 1.199 g cm -3 , μ = 0.525 mm -1 , the final R 1 = 0.0515 and wR 2 = 0.1513 for 3602 observed reflections (I > 2σ(I)). The Ni(II) atom is six coordinated by two nitrogen atoms from C=N, two nitrogen atoms from pyridine rings and two carboxylic oxygen atoms in different ligands, forming a distorted octahedron geometry. Each ligand serves as a bridging ligand to link Ni 2+ ions through carboxylic oxygen atoms, leading to a two dimensional coordina tion polymer.

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Salicylate Ion-Selective Electrode Based on New Tetranuclear Copper Complexes of O-Vannlin-methionine as Neutral Carriers

Cited by 15 publications

References 44 publications

Potentiometric Sensing of Valaciclovir Hydrochloride in the Presence of Its Acid Induced Degradation Product with Real Time Acquisition of the Dissolution Profile from Its Pharmaceutical Formulations

Potentiometric Sensing of Valaciclovir Hydrochloride in the Presence of Its Acid Induced Degradation Product with Real Time Acquisition of the Dissolution Profile from Its Pharmaceutical Formulations

Application of metalloporphyrin grafted-graphene oxide for the construction of a novel salicylate-selective electrode

Synthesis and crystal structure of a new nickel(II) coordination polymer based on Schiff base

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