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      Potentiometric Sensors for Iodide and Bromide Based on Pt(II)-Porphyrin

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          Abstract

          Pt(II) 5,10,15,20-tetra(4-methoxy-phenyl)-porphyrin (PtTMeOPP) was used in the construction of new ion-selective sensors. The potentiometric response characteristics (slope and selectivity) of iodide and bromide-selective electrodes based on (PtTMeOPP) metalloporphyrin in o-nitrophenyloctylether (NPOE), dioctylphtalate (DOP) and dioctylsebacate (DOS) plasticized poly(vinyl chloride) membranes are compared. The best results were obtained for the membranes plasticized with DOP and NPOE. The sensors have linear responses with near-Nernstian slopes toward bromide and iodide ions and good selectivity. The membrane plasticized with NPOE was electrochemically characterized using the EIS method to determine its water absorption and the diffusion coefficient into the membrane.

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          Potentiometric ion sensors.

          A Lewenstam, Ari Ivaska, Johan Bobacka (2008)
          Article 0 comments Cited 135 times – based on 0 reviews     Review now
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            Porphyrinoids for Chemical Sensor Applications.

            Corrado Di Natale, Manuela Stefanelli, Donato Monti … (2017)
            Porphyrins and related macrocycles have been intensively exploited as sensing materials in chemical sensors, since in these devices they mimic most of their biological functions, such as reversible binding, catalytic activation, and optical changes. Such a magnificent bouquet of properties allows applying porphyrin derivatives to different transducers, ranging from nanogravimetric to optical devices, also enabling the realization of multifunctional chemical sensors, in which multiple transduction mechanisms are applied to the same sensing layer. Potential applications are further expanded through sensor arrays, where cross-selective sensing layers can be applied for the analysis of complex chemical matrices. The possibility of finely tuning the macrocycle properties by synthetic modification of the different components of the porphyrin ring, such as peripheral substituents, molecular skeleton, coordinated metal, allows creating a vast library of porphyrinoid-based sensing layers. From among these, one can select optimal arrays for a particular application. This feature is particularly suitable for sensor array applications, where cross-selective receptors are required. This Review briefly describes chemical sensor principles. The main part of the Review is divided into two sections, describing the porphyrin-based devices devoted to the detection of gaseous or liquid samples, according to the corresponding transduction mechanism. Although most devices are based on porphyrin derivatives, seminal examples of the application of corroles or other porphyrin analogues are evidenced in dedicated sections.
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              Development of Ion Chemosensors Based on Porphyrin Analogues.

              Wei-Hong Zhu, Yongshu Xie, Yubin Ding (2017)
              Sensing of metal ions and anions is of great importance because of their widespread distribution in environmental systems and biological processes. Colorimetric and fluorescent chemosensors based on organic molecular species have been demonstrated to be effective for the detection of various ions and possess the significant advantages of low cost, high sensitivity, and convenient implementation. Of the available classes of organic molecules, porphyrin analogues possess inherently many advantageous features, making them suitable for the design of ion chemosensors, with the targeted sensing behavior achieved and easily modulated based on their following characteristics: (1) NH moieties properly disposed for binding of anions through cooperative hydrogen-bonding interactions; (2) multiple pyrrolic N atoms or other heteroatoms for selectively chelating metal ions; (3) variability of macrocycle size and peripheral substitution for modulation of ion selectivity and sensitivity; and (4) tunable near-infrared emission and good biocompatibility. In this Review, design strategies, sensing mechanisms, and sensing performance of ion chemosensors based on porphyrin analogues are described by use of extensive examples. Ion chemosensors based on normal porphyrins and linear oligopyrroles are also briefly described. This Review provides valuable information for researchers of related areas and thus may inspire the development of more practical and effective approaches for designing high-performance ion chemosensors based on porphyrin analogues and other relevant compounds.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Sensors (Basel)
                Journal ID (iso-abbrev): Sensors (Basel)
                Journal ID (publisher-id): sensors
                Title: Sensors (Basel, Switzerland)
                Publisher: MDPI
                ISSN (Electronic): 1424-8220
                Publication date (Electronic): 16 July 2018
                Publication date Collection: July 2018
                Volume: 18
                Issue: 7
                Electronic Location Identifier: 2297
                Affiliations
                [1 ]Faculty of Chemistry, Biology, Geography, West University of Timisoara, 4 V. Parvan Ave, Timisoara 300223, Romania; danavlascici@ 123456yahoo.com
                [2 ]Institute of Chemistry Timişoara of Romanian Academy, 24 M. Viteazul Ave, Timisoara 300223, Romania; plesu_nicole@ 123456yahoo.com (N.P.); ancalascu@ 123456yahoo.com (A.L.); mihaelapetric@ 123456yahoo.com (M.P.); mdorosencu@ 123456yahoo.com (M.C.); anca_palade@ 123456yahoo.com (A.B.)
                [3 ]Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Pta Victoriei 2, Timisoara 300006, Romania; gfagadar@ 123456yahoo.com
                Author notes
                [* ]Correspondence: efagadar@ 123456yahoo.com ; Tel.: +40-256-491-818
                Author information
                https://orcid.org/0000-0001-5668-709X
                Article
                Publisher ID: sensors-18-02297
                DOI: 10.3390/s18072297
                PMC ID: 6068665
                PubMed ID: 30012951
                SO-VID: 72959ae9-5cee-4932-a100-8428a2f639c9
                Copyright © © 2018 by the authors.
                License:

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                Date received : 06 June 2018
                Date accepted : 13 July 2018
                Categories
                Subject: Article

                ScienceOpen disciplines: Biomedical engineering
                Keywords: pt-metalloporphyrin,ion-selective electrode,potentiometry,iodide,bromide,pvc membrane
                Data availability:
                ScienceOpen disciplines: Biomedical engineering
                Keywords: pt-metalloporphyrin, ion-selective electrode, potentiometry, iodide, bromide, pvc membrane

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