Metallo-tetraazaporphyrin based anion sensors: regulation of sensor characteristics through central metal ion coordination

Prasad, R.; Gupta, Vinod K.; Kumar, Azad

doi:10.1016/j.aca.2003.11.056

Cited by 237 publications

(69 citation statements)

References 35 publications

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“…Analytical methods based on potentiometric detection with ion-selective electrodes (ISEs) can be considered as an advantageous alternative because they are eco-friendly techniques, provide easy construction and manipulation, present good selectivity in a wide concentration range, a relatively low detection limit, show fast response and perform non-destructive analysis. This has led to increasing interest by our research group in the development and application of an ion-selective electrode using various cyclic and acyclic neutrals and ion-pairs for the determination of metal [16][17][18][19][20][21] and non-metal ions [22][23], organic molecules [24] and some selective drugs [25][26][27][28][29][30][31][32]. With this intent, we synthesized an NaTPB- …”

Section: Introductionmentioning

confidence: 99%

Drug selective poly(vinyl chloride)-based sensor of desipramine hydrochloride

Gupta¹,

Pal²,

Singh³

2010

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

Drug selective poly(vinyl chloride)-based sensor of desipramine hydrochloride

Gupta¹,

Pal²,

Singh³

2010

Electrochimica Acta

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“…Then, the sensor is used in contact with a solution containing a primary ion. 19,20 Ionophores containing nitrogen atoms such as dithizone, 21 4-(2-pyridylazo)resorcinol (PAR), 22 zincon, 23 2-(2-hydroxy-5-chloro)benzaldehyde-[4-(3-methyl-3-mesitylcyclobutyl)-1,3-thiazol-2yl] hydrazine, 24 have been widely applied in the development of optodes. In this research, the application of synthesized 5-Br salophen as ionophore in PVC membrane containing plasticizer for the sensitive determination of zinc(II) ion in aqueous solutions was investigated.…”

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

A Novel Sensitive Bulk Optode Based on 5-Br Salophen as an Ionophore for Determination of Zinc Ion in Real Samples

Alian¹,

Semnani²,

Firooz³

et al. 2017

J. Braz. Chem. Soc.

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An optical sensing film was fabricated for sensitive determination of zinc ion in aqueous solutions. The optical sensor was prepared by synthesized ionophore, 5-Br salophen, dioctyl sebacate (DOS) as a plasticizer, sodium tetraphenyl borate (NaTPB) as a lipophilic anionic additive in a poly(vinyl chloride) membrane. The optode response is based on the cation-exchange membrane and indicated a significant absorbance signal change on the exposure to BrittonRobinson buffer solution of pH 5.7 containing Zn 2+ ion. The proposed sensor showed a linear range of 4.9 × 10 -5 -4.5 × 10 -12 mol L -1 with a limit of detection of 3.9 × 10 -12 mol L -1. Furthermore, satisfactory analytical sensing characteristics including selectivity, stability, and reproducibility for the determination of zinc ion were obtained. The response time of the sensing film was less than 5 min, depending on the concentration of Zn 2+ ions. The proposed sensor was successfully applied for determination of zinc in tap water, river water, and sea water. Keywords: optical sensor, zinc ion, UV-Vis spectrophotometry, 5-Br salophen IntroductionZinc is essential in human metabolism. It plays an important role in the activity of more than 200 enzymes responsible for genetic materials, food digestion, and metabolism of carbohydrate, protein and fat. The zinc deficiency leads to retarded growth and lower feed efficiency, inhibits the general well-being, and causes ulcers as well as scaling of the skin.1,2 Although zinc is necessary for health, excess zinc can be harmful. The excess amount of zinc ion in body significantly decreases copper and iron absorption. Moreover, the free zinc ion in solution is toxic to plants and aquatic organisms.3,4 Therefore, due to the pressing need for sensitive zinc determination in biological and environmental samples, particularly water samples, various analytical techniques have been proposed for the determination of zinc. Spectrophotometry, 5 atomic absorption spectroscopy (AAS), 6 inductively coupled plasma atomic emission spectrometry (ICP-AES), 7 solidphase extraction, 8 liquid-liquid extraction, 9 dispersive liquidliquid extraction, 10 ion-imprinted polymer nanoparticle, 11 nuclear magnetic resonance (NMR) molecular sensor, 12 and stripping potentiometry 13,14 are among the most used techniques. The sample preconcentration, time consuming and complicated operation, and high costs for equipment are some of the drawbacks to these methods. Therefore, these methods are not appropriate for the simple, economical, and sensitive determination of zinc in analysis strategy. In recent years, there has been a growing need for constructing chemical or electrochemical sensors to monitor the environmental samples fast and economically. In this regard, due to their advantages in comparison to ion-selective electrode, optical sensors have received considerable attention. Ease of production, good selectivity and sensitivity, low cost method, as well as high dynamic concentration range, are the main advantages. [15][16][17][18] Bulk optode...

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“…Sensing analysis technology has attracted significant focus because of the advantages including capability of visualization, easy operational procedure, rapid response time, cost effective equipment, convenience afforded due to the lack of need for expensive instruments and complex operation steps, high sensitivity and selectivity. [8][9][10][11][12][13][14][15][16][17][18][19][20][21] , The technology has been applied for the determination of medicine, [22][23][24][25] biomolecules, [26][27][28][29] TNP, 30 metal ions, [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50] anions, 51 and so on. 52 Fluorescent sensors, as an important sensing analysis method, have also attracted received considerable attention for visual detection of metal ions.…”

Section: Introductionmentioning

confidence: 99%

A Simplified and Turn-on Fluorescence Chemosensor Based on Coumarin Derivative for Detection of Aluminium(III) Ion in Pure Aqueous Solution

et al. 2015

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First, 7-hydroxy-4-methylcoumarin (5.00 g, 0.0284 mol) and hexamine (10.0 g, 0.071 mol) in acetic acid (37 mL) were stirred for 5.5 h at 95 C. Then, hydrochloric acid (75 mL, HCl: H2O = 84:100, v/v) was added and further College of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, P. R. ChinaA novel chemosensor L based on coumarin Schiff-base was synthesized and investigated. Sensor L showed remarkable selectivity for Al 3+ in Tris-HCl aqueous buffer solution (pH 7.2), and the selectivity was not affected by the presence of a large excess of other competitive ions. The sensor responded rapidly to Al 3+ in aqueous solutions with a 2:1 stoichiometry. Meanwhile, it indicated significant improvement of quantum efficiency and ideal fluorescent lifetime.

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Metallo-tetraazaporphyrin based anion sensors: regulation of sensor characteristics through central metal ion coordination

Cited by 237 publications

References 35 publications

Drug selective poly(vinyl chloride)-based sensor of desipramine hydrochloride

Drug selective poly(vinyl chloride)-based sensor of desipramine hydrochloride

A Novel Sensitive Bulk Optode Based on 5-Br Salophen as an Ionophore for Determination of Zinc Ion in Real Samples

A Simplified and Turn-on Fluorescence Chemosensor Based on Coumarin Derivative for Detection of Aluminium(III) Ion in Pure Aqueous Solution

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