1
|
Huang SH, Parandhaman M, Farnia S, Kim J, Amemiya S. Nanoelectrochemistry at liquid/liquid interfaces for analytical, biological, and material applications. Chem Commun (Camb) 2023; 59:9575-9590. [PMID: 37458703 PMCID: PMC10416082 DOI: 10.1039/d3cc01982a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Herein, we feature our recent efforts toward the development and application of nanoelectrochemistry at liquid/liquid interfaces, which are also known as interfaces between two immiscible electrolyte solutions (ITIES). Nanopipets, nanopores, and nanoemulsions are developed to create the nanoscale ITIES for the quantitative electrochemical measurement of ion transfer, electron transfer, and molecular transport across the interface. The nanoscale ITIES serves as an electrochemical nanosensor to enable the selective detection of various ions and molecules as well as high-resolution chemical imaging based on scanning electrochemical microscopy. The powerful nanoelectroanalytical methods will be useful for biological and material applications as illustrated by in situ studies of solid-state nanopores, nuclear pore complexes, living bacteria, and advanced nanoemulsions. These studies provide unprecedented insights into the chemical reactivity of important biological and material systems even at the single nanostructure level.
Collapse
Affiliation(s)
- Siao-Han Huang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA.
| | | | - Solaleh Farnia
- Department of Chemistry, University of Rhode Island, Kingston, RI, 02881, USA.
| | - Jiyeon Kim
- Department of Chemistry, University of Rhode Island, Kingston, RI, 02881, USA.
| | - Shigeru Amemiya
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA.
| |
Collapse
|
2
|
The broad antibacterial activity of a small synthetic receptor for cellular phosphatidylglycerol lipids. Folia Microbiol (Praha) 2023; 68:465-476. [PMID: 36622376 DOI: 10.1007/s12223-022-01023-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 12/06/2022] [Indexed: 01/10/2023]
Abstract
A small receptor molecule composed of a porphyrin core with tetrakis-ammonium glycine pickets (liptin 3e) appears to target anionic phosphatidylglycerol (PG) lipid head groups through multifunctional binding-pocket complementarity. Although a major component of bacterial cell membranes, PG is not widely found in animal cells, making PG potentially selective for bacterial targeting. Growth of microbial isolates was monitored in liquid cultures treated with liptin 3e by dilution plate counts and turbidity. Inhibition of growth by liptin 3e was observed for the ESKAPE human pathogens (Enterobacter aerogenes, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterococcus faecium), Escherichia coli, Mycobacterium smegmatis, Streptococcus sobrinus, and methicillin-resistant S. aureus (MRSA), with certain species suppressed at <1 μg/mL (sub-μM) concentrations. Prolonged lag phases were observed, although cell viability was mainly unaffected, suggesting that liptin treatment caused bacteriostasis. Cultures treated with liptin 3e eventually recovered, resumed growth, and reached the same final densities as untreated cultures. Growth of the fungus Candida albicans was not appreciably inhibited by liptin 3e. If liptins exhibit bacteriostasis through broad extracellular binding to PG head groups, thereby disrupting cellular processes, liptins may be considered for development into preclinical drug candidates or be useful as a targeting system for molecular beacons or antibacterial drugs.
Collapse
|
3
|
Xu P, Muhamad Rapidi HI, Ahmed S, Abel DK, Garcia KJ, Chen R, Iwai NT, Shen M. PEDOT/PVC-modified amperometric carbon electrodes for acetylcholine detection. Chem Commun (Camb) 2022; 58:13218-13221. [DOI: 10.1039/d2cc03946j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Selective detection of acetylcholine (ACh) with PEDOT/PVC-modified amperometric carbon electrodes.
Collapse
Affiliation(s)
- Peibo Xu
- Department of Chemistry, The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Hazirah Ismah Muhamad Rapidi
- Department of Chemistry, The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Sidrah Ahmed
- Department of Chemistry, The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Daniel Kenneth Abel
- Department of Chemistry, The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Kiersten Jade Garcia
- Department of Chemistry, The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Ran Chen
- Department of Chemistry, The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Nicholas Toshio Iwai
- Department of Chemistry, The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Mei Shen
- Department of Chemistry, The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| |
Collapse
|
4
|
Potentiometric Carboxylate Sensors Based on Carbazole-Derived Acyclic and Macrocyclic Ionophores. CHEMOSENSORS 2020. [DOI: 10.3390/chemosensors9010004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Solid-contact ion-selective electrodes with carbazole-derived ionophores were prepared. They were characterized as acetate sensors, but can be used to determine a number of carboxylates. The potentiometric response characteristics (slope, detection limit, selectivity, and pH sensitivity) of sensors prepared with different membrane compositions (ionophore, ionophore concentration, anion exchanger concentration, and plasticizer) were evaluated. The results show that for the macrocyclic ionophores, a larger cavity provided better selectivity. The sensors exhibited modest selectivity for acetate but good selectivity for benzoate. The carbazole-derived ionophores effectively decreased the interference from lipophilic anions, such as bromide, nitrate, iodide, and thiocyanate. The selectivity, detection limit, and linear range were improved by choosing a suitable plasticizer and by reducing the ionophore and anion exchanger concentrations. The influence of the electrode body’s material upon the composition of the plasticized poly(vinyl chloride) membrane, and thus also upon the sensor characteristics, was also studied. The choice of materials for the electrode body significantly affected the characteristics of the sensors.
Collapse
|
5
|
Yang Z, Li C, Liu X, Zhao S, Qu M, Sun S, Zhang Z, Yang Z, Chen X. Copper(II) Complex of a Urea‐functionalized Pyridyl Ligand: Synthesis, Crystal Structure, and Acetate Binding Properties. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Zaiwen Yang
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology 710054 Xi'an Shaanxi P. R. China
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization Ministry of Natural Resources 710021 Xi'an Shaanxi P. R. China
| | - Chun Li
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology 710054 Xi'an Shaanxi P. R. China
| | - Xiangrong Liu
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology 710054 Xi'an Shaanxi P. R. China
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization Ministry of Natural Resources 710021 Xi'an Shaanxi P. R. China
| | - Shunsheng Zhao
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology 710054 Xi'an Shaanxi P. R. China
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization Ministry of Natural Resources 710021 Xi'an Shaanxi P. R. China
| | - Mengnan Qu
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology 710054 Xi'an Shaanxi P. R. China
| | - Shasha Sun
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology 710054 Xi'an Shaanxi P. R. China
| | - Zhen Zhang
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology 710054 Xi'an Shaanxi P. R. China
| | - Zheng Yang
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology 710054 Xi'an Shaanxi P. R. China
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization Ministry of Natural Resources 710021 Xi'an Shaanxi P. R. China
| | - Xinjuan Chen
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization Ministry of Natural Resources 710021 Xi'an Shaanxi P. R. China
| |
Collapse
|
6
|
Abstract
Anions play a vital role in a broad range of environmental, technological, and physiological processes, making their detection/quantification valuable. Electroanalytical sensors offer much to the selective, sensitive, cheap, portable, and real-time analysis of anion presence where suitable combinations of selective (noncovalent) recognition and transduction can be integrated. Spurred on by significant developments in anion supramolecular chemistry, electrochemical anion sensing has received considerable attention in the past two decades. In this review, we provide a detailed overview of all electroanalytical techniques that have been used for this purpose, including voltammetric, impedimetric, capacititive, and potentiometric methods. We will confine our discussion to sensors that are based on synthetic anion receptors with a specific focus on reversible, noncovalent interactions, in particular, hydrogen- and halogen-bonding. Apart from their sensory properties, we will also discuss how electrochemical techniques can be used to study anion recognition processes (e.g., binding constant determination) and will furthermore provide a detailed outlook over future efforts and promising new avenues in this field.
Collapse
Affiliation(s)
- Robert Hein
- Department of Chemistry , University of Oxford , South Parks Road , Oxford OX1 3QZ , U.K
| | - Paul D Beer
- Department of Chemistry , University of Oxford , South Parks Road , Oxford OX1 3QZ , U.K
| | - Jason J Davis
- Department of Chemistry , University of Oxford , South Parks Road , Oxford OX1 3QZ , U.K
| |
Collapse
|
7
|
Bhattacharyya A, Chandra Makhal S, Guchhait N. Mimicking cyclohexane chair form via H-bonding in crystal structure of a dihydroxy coumarin derivative: Efficient ratiometric response of F− over AcO−. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.06.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
8
|
Liu C, Zhang W, Zhao Y, Lin C, Zhou K, Li Y, Li G. Urea-Functionalized Poly(ionic liquid) Photonic Spheres for Visual Identification of Explosives with a Smartphone. ACS APPLIED MATERIALS & INTERFACES 2019; 11:21078-21085. [PMID: 31071256 DOI: 10.1021/acsami.9b04568] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Current effort merging rational design of colorimetric sensor array with portable and easy-to-use hand-held readers delivers an effective and convenient method for on-site detection and discrimination of explosives. However, on the one hand, there are rare relevant reports; on the other hand, some limitations regarding direct sensing, color retention, and array extendibility still remain. Herein, urea-functionalized poly(ionic liquid) photonic spheres were employed to construct a brand-new colorimetric sensor array for directly identifying five nitroaromatic explosives with a smartphone. It is found that the strong hydrogen bonding between the urea motifs and the nitro groups offers the spheres high affinity for binding the targets, whereas the existence of other abundant intermolecular interactions in poly(ionic liquid) units renders one single sphere eligible for prominent cross-responses to a broad range of analytes. Besides, in our case, opal-like photonic crystal structures other than chemical dyes are used to fabricate a new style of colorimetric array. Such structural colors can be vivid and unchanged over a long period even in hazard environments. Importantly, through simply altering the preparation conditions of our PIL spheres, a pool of sensing elements could be added to the developed array for discrimination of extended target systems such as more explosives and even their mixtures in real-world context.
Collapse
Affiliation(s)
- Chengcheng Liu
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Wanlin Zhang
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Yang Zhao
- Institute of Forensic Science , Ministry of Public Security , Beijing 100038 , P. R. China
| | - Changxu Lin
- Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, College of Physical Science and Technology , Xiamen University , Xiamen 361005 , P. R. China
| | - Kang Zhou
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Yanmei Li
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Guangtao Li
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| |
Collapse
|
9
|
Martin K, Kadam SA, Mattinen U, Bobacka J, Leito I. Solid‐contact Acetate‐selective Electrode Based on a 1,3‐bis(carbazolyl)urea‐ionophore. ELECTROANAL 2019. [DOI: 10.1002/elan.201800790] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kerli Martin
- University of TartuInstitute of Chemistry Ravila 14a Tartu 50411 Estonia
| | - Sandip A. Kadam
- University of TartuInstitute of Chemistry Ravila 14a Tartu 50411 Estonia
| | - Ulriika Mattinen
- Åbo Akademi UniversityJohan Gadolin Process Chemistry CentreLaboratory of Analytical Chemistry Biskopsgatan 8 FI-20500 Turku/Åbo Finland
| | - Johan Bobacka
- Åbo Akademi UniversityJohan Gadolin Process Chemistry CentreLaboratory of Analytical Chemistry Biskopsgatan 8 FI-20500 Turku/Åbo Finland
| | - Ivo Leito
- University of TartuInstitute of Chemistry Ravila 14a Tartu 50411 Estonia
| |
Collapse
|
10
|
Chakraborty T, Dasgupta S, Bhattacharyya A, Zangrando E, Escudero D, Das D. A macrocyclic tetranuclear ZnII complex as a receptor for selective dual fluorescence sensing of F− and AcO−: effect of a macrocyclic ligand. NEW J CHEM 2019. [DOI: 10.1039/c9nj03481a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Fluorimetric detection of F−/AcO− with an additional ‘INHIBIT’ logic gate response for F−/H+ and AcO−/H+ in an aqueous-methanol medium by a 48-membered macrocyclic ZnII-complex DAS has been explored by combined experimental and theoretical study.
Collapse
Affiliation(s)
| | | | | | - Ennio Zangrando
- Department of Chemical and Pharmaceutical Sciences
- University of Trieste
- 34127 Trieste
- Italy
| | | | - Debasis Das
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
| |
Collapse
|
11
|
Badekar PS, Kumbhar AA. Anthracene-based fluorescence turn-on chemodosimeter for the recognition of persulfate anion. NEW J CHEM 2018. [DOI: 10.1039/c7nj03425c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fluorescence turn-on chemodosimeter that recognizes persulfate anion in the presence of other competitive anions or cations in the UV-visible region has been developed.
Collapse
Affiliation(s)
- Pooja S. Badekar
- Department of Chemistry
- Savitribai Phule Pune University
- Pune 411007
- India
| | - Anupa A. Kumbhar
- Department of Chemistry
- Savitribai Phule Pune University
- Pune 411007
- India
| |
Collapse
|
12
|
Bhattacharyya A, Ghosh S, Makhal SC, Guchhait N. Harnessing a pyrimidine based molecular switch to construct reversible test strips for F -/AcO - with respect to Al 3+: A colorimetric approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 179:242-249. [PMID: 28254707 DOI: 10.1016/j.saa.2017.02.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 02/17/2017] [Accepted: 02/18/2017] [Indexed: 06/06/2023]
Abstract
We report novel compound 4-nitro-2-((pyrimidin-2-ylamino) methyl) phenol (1) synthesized by the condensation of 5-nitro salicylaldehyde with 2-amino pyridine. Compound 1 serves as a dual signalling chromogenic receptor for F-/AcO- and Al3+ ions. The chromogenic response of 1 towards the aforementioned analytes is reversible with respect to either Al3+/X (=F/AcO)- or X(F/AcO)-/Al3+. The limit of detection of 1 for F- and AcO- are 1.0025×10-7M and 0.79×10-7M, respectively. The optical switching has been rationalized on the basis of UV-Vis titrations and 1H NMR titrations respectively. The optical switching has been successfully use by constructing reversible paper strips for detecting Al3+ as well as F-/AcO-.
Collapse
Affiliation(s)
| | - Soumen Ghosh
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India
| | | | - Nikhil Guchhait
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India.
| |
Collapse
|
13
|
P. S, Tarafder K, Shetty AN, Trivedi DR. Insights into the electrooptical anion sensing properties of a new organic receptor: solvent dependent chromogenic response and DFT studies. RSC Adv 2016. [DOI: 10.1039/c6ra16197a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AcO− ion mediated color transition properties of an organic receptor in solvents of varying polarity highlighting the influence of dipole moment in stabilizing the excited state.
Collapse
Affiliation(s)
- Srikala P.
- Supramolecular Chemistry Laboratory
- National Institute of Technology Karnataka (NITK)
- Surathkal
- India
| | - Kartick Tarafder
- Department of Physics
- National Institute of Technology Karnataka (NITK)
- Surathkal-575025
- India
| | - A. Nityananda Shetty
- Department of Chemistry
- National Institute of Technology Karnataka (NITK)
- Surathkal-575025
- India
| | - Darshak R. Trivedi
- Supramolecular Chemistry Laboratory
- National Institute of Technology Karnataka (NITK)
- Surathkal
- India
| |
Collapse
|
14
|
Blažek Bregović V, Basarić N, Mlinarić-Majerski K. Anion binding with urea and thiourea derivatives. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.03.011] [Citation(s) in RCA: 214] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
15
|
Más-Montoya M, Cuartero M, Curiel D, Ortuño JA, Soledad García M, Tárraga A. Binding studies and anion-selective electrodes with neutral isophthalamide-based receptors. Analyst 2015; 140:287-94. [DOI: 10.1039/c4an01346h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The incorporation of neutral and structurally simple isophthalamide-based receptors into plasticised polymeric membrane anion-selective electrodes has afforded devices with a good sensing ability.
Collapse
Affiliation(s)
- Miriam Más-Montoya
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Murcia
- 30100-Murcia
- Spain
| | - María Cuartero
- Department of Analytical Chemistry
- Faculty of Chemistry
- University of Murcia
- 30100-Murcia
- Spain
| | - David Curiel
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Murcia
- 30100-Murcia
- Spain
| | - Joaquín A. Ortuño
- Department of Analytical Chemistry
- Faculty of Chemistry
- University of Murcia
- 30100-Murcia
- Spain
| | - M. Soledad García
- Department of Analytical Chemistry
- Faculty of Chemistry
- University of Murcia
- 30100-Murcia
- Spain
| | - Alberto Tárraga
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Murcia
- 30100-Murcia
- Spain
| |
Collapse
|
16
|
Bushra R, Shahadat M, Khan MA, Inamuddin, Adnan R, Rafatullah M. Optimization of Polyaniline Supported Ti(IV) Arsenophosphate Composite Cation Exchanger Based Ion-Selective Membrane Electrode for the Determination of Lead. Ind Eng Chem Res 2014. [DOI: 10.1021/ie5034655] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rani Bushra
- School of Chemical Sciences and ∥School of Industrial Technology, Universiti Sains Malaysia, 11800 Georgetown, Pulau Pinang, Malaysia
- Analytical Research Laboratory, Department of Chemistry, and §Department of Applied
Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh−202002, India
| | - Mohammad Shahadat
- School of Chemical Sciences and ∥School of Industrial Technology, Universiti Sains Malaysia, 11800 Georgetown, Pulau Pinang, Malaysia
- Analytical Research Laboratory, Department of Chemistry, and §Department of Applied
Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh−202002, India
| | - Meraj A. Khan
- School of Chemical Sciences and ∥School of Industrial Technology, Universiti Sains Malaysia, 11800 Georgetown, Pulau Pinang, Malaysia
- Analytical Research Laboratory, Department of Chemistry, and §Department of Applied
Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh−202002, India
| | - Inamuddin
- School of Chemical Sciences and ∥School of Industrial Technology, Universiti Sains Malaysia, 11800 Georgetown, Pulau Pinang, Malaysia
- Analytical Research Laboratory, Department of Chemistry, and §Department of Applied
Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh−202002, India
| | - Rohana Adnan
- School of Chemical Sciences and ∥School of Industrial Technology, Universiti Sains Malaysia, 11800 Georgetown, Pulau Pinang, Malaysia
- Analytical Research Laboratory, Department of Chemistry, and §Department of Applied
Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh−202002, India
| | - Mohd. Rafatullah
- School of Chemical Sciences and ∥School of Industrial Technology, Universiti Sains Malaysia, 11800 Georgetown, Pulau Pinang, Malaysia
- Analytical Research Laboratory, Department of Chemistry, and §Department of Applied
Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh−202002, India
| |
Collapse
|
17
|
Lee K, Kang DH, Choe JE, Yun M, You JM, Go MJ, Lee J, Jeon S. The Novel SCN -Ion-selective Electrode Based on the 1-Benzyl-3-(4-nitrophenyl) thio-urea Ionophore. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.11.3175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
18
|
Reena V, Suganya S, Velmathi S. Synthesis and anion binding studies of azo-Schiff bases: Selective colorimetric fluoride and acetate ion sensors. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2013.05.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
19
|
Poursaberi T, Hassanisadi M. Application of metalloporphyrin grafted-graphene oxide for the construction of a novel salicylate-selective electrode. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424612501143] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
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.
Collapse
|
20
|
Poursaberi T, Hassanisadi M, Shanehsaz M. Amino-silica coated magnetic nanoparticles modified with Ni(II)- metalloporphyrin for the selective removal of nitrate ions from water samples. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s108842461250071x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A new magnetic nanoadsorbent was developed by treating Fe3O4 nanoparticles with 3-aminopropyltriethoxysilane and nickel(II) — metalloporphyrin, and applied to remove excessive nitrate from aqueous solutions. Fourier Transform Infrared Spectroscopy (FT-IR), X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) were used to characterize the synthesized nanoparticles. The effect of pH, contact time, sorbent dosage and some co-existing anions present in aqueous solutions was investigated. Regeneration of nitrate adsorbed material was possible with NaOH , the modified magnetic nanoparticles exhibited good reusability.
Collapse
Affiliation(s)
| | | | - Maryam Shanehsaz
- Department of Chemistry, Tarbiat Modarres University, Tehran, 14117-13116, Iran
| |
Collapse
|
21
|
Deng K, Li C, Li X, Xu G. Simultaneous Electrochemical Determination of Hydroquinone and Catechol at MWNTs and Cobalt(II) Tetrakisphenylporphyrin Modified Electrode. ANAL LETT 2012. [DOI: 10.1080/00032719.2012.655660] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
22
|
Zhang J, Yang C, Wang X, Yang X. Colorimetric recognition and sensing of thiocyanate with a gold nanoparticle probe and its application to the determination of thiocyanate in human urine samples. Anal Bioanal Chem 2012; 403:1971-81. [DOI: 10.1007/s00216-012-6002-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 03/17/2012] [Accepted: 03/30/2012] [Indexed: 10/28/2022]
|
23
|
Mal’tseva OV, Churakhina YI, Mamardashvili NZ. Synthesis and properties of dimeric octaalkylporphyrins with a polyether linker. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2010. [DOI: 10.1134/s1070428010030255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
24
|
Zahran EM, Hua Y, Li Y, Flood AH, Bachas LG. Triazolophanes: a new class of halide-selective ionophores for potentiometric sensors. Anal Chem 2010; 82:368-75. [PMID: 19994863 DOI: 10.1021/ac902132d] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Triazolophanes, cyclic compounds containing 1,2,3-triazole units, are a new class of host molecules that demonstrate strong interactions with halides. These molecules are designed with a preorganized cavity that interacts through hydrogen bonding with spherical anions, such as chloride and bromide. We have explored the use of one such triazolophane as a halide-selective ionophore in poly(vinyl chloride) (PVC) membrane electrodes. Different membrane compositions were evaluated to identify concentrations of the ionophore, plasticizer, and lipophilic additive that give rise to the best chloride and bromide selectivity. The lipophilicity of the plasticizer was found to have a great impact on the electrode response. Additionally, the concentration of the lipophilic additive was found to be critical for optimal response. The utility of a triazolophane-based electrode was demonstrated by quantification of bromide in horse serum samples.
Collapse
Affiliation(s)
- Elsayed M Zahran
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, USA
| | | | | | | | | |
Collapse
|
25
|
Han C, Cui Z, Zou Z, Sabahaiti, Tian D, Li H. Urea-type ligand-modified CdSe quantum dots as a fluorescence “turn-on” sensor for CO32− anions. Photochem Photobiol Sci 2010; 9:1269-73. [DOI: 10.1039/c0pp00119h] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
26
|
Ivanova YB, Semeikin AS, Mamardashvili NZ. Effect of the macrocycle chemical modification on the tetraphenylporphin basic properties. RUSS J GEN CHEM+ 2009. [DOI: 10.1134/s1070363209050284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
27
|
Górski Ł, Mroczkiewicz M, Pietrzak M, Malinowska E. Metalloporphyrin-based acetate-selective electrodes as detectors for enzymatic acetylcholine determination in flow-injection analysis system. Anal Chim Acta 2009; 644:30-5. [DOI: 10.1016/j.aca.2009.04.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Revised: 04/06/2009] [Accepted: 04/08/2009] [Indexed: 11/27/2022]
|
28
|
Li H, Han C, Zhang L. Synthesis of cadmium selenide quantum dots modified with thiourea type ligands as fluorescent probes for iodide ions. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b806485g] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
29
|
Calderon-Kawasaki K, Kularatne S, Li YH, Noll BC, Scheidt WR, Burns DH. Synthesis of urea picket porphyrins and their use in the elucidation of the role buried solvent plays in the selectivity and stoichiometry of anion binding receptors. J Org Chem 2007; 72:9081-7. [PMID: 17973429 PMCID: PMC2518125 DOI: 10.1021/jo701443c] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of alpha,alpha-5,10-diurea and alpha,alpha,alpha-5,10,15-triurea picket porphyrins are detailed in this report. In previous reports, these porphyrins, along with alpha,alpha,alpha,alpha-5,10,15,20-tetraurea picket porphyrin, were used to demonstrate the important role one buried solvent molecule plays in the selectivity and stoichiometry of binding inorganic anions. Building on prior work, this report discusses the results of acetate anion binding studies between tetra- and diurea picket porphyrins (the latter does not contain a buried solvent molecule in the anion-receptor complex), compares differences in thermodynamic data obtained from van't Hoff plots of a porphyrin anion receptor able to utilize buried solvent in its binding motif with one that does not, and compares the crystal structure of a tetraurea porphyrin 1-chloride anion complex that contains buried solvent with new X-ray crystal structures of tetraurea porphyrin 1-dichloride or bisdihydrogenphosphate anion complexes that contain no buried solvent. Data from our previous work, and the work described herein, demonstrates that one buried solvent molecule provides stability to the receptor-anion complex that is similar in energy to a moderately strong hydrogen bond.
Collapse
|
30
|
Pomecko R, Asfari Z, Hubscher-Bruder V, Bochenska M, Arnaud-Neu F. A New Phosphonium Calix[4]arene for Selective Anion Recognition: Synthesis and Studies in Solution and in Ion Selective Electrodes. Supramol Chem 2007. [DOI: 10.1080/10610270601123995] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Radoslaw Pomecko
- a IPHC-DSA, ULP, CNRS , 25 rue Becquerel, 67087, Strasbourg, France
- b Department of Chemical Technology , Chemical Faculty, Gdansk University of Technology , ul. Narutowicza 11/12, 80-264, Gdansk, Poland
| | - Zouhair Asfari
- a IPHC-DSA, ULP, CNRS , 25 rue Becquerel, 67087, Strasbourg, France
| | | | - Maria Bochenska
- b Department of Chemical Technology , Chemical Faculty, Gdansk University of Technology , ul. Narutowicza 11/12, 80-264, Gdansk, Poland
| | | |
Collapse
|
31
|
Hernández-Rodríguez M, Juaristi E. Structurally simple chiral thioureas as chiral solvating agents in the enantiodiscrimination of α-hydroxy and α-amino carboxylic acids. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.05.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
32
|
Kirsanov DO, Legin AV, Kulikova AP, Pol’shin EN, Vlasov YG. Polymeric sensors for determination of anions of organic acids. RUSS J APPL CHEM+ 2007. [DOI: 10.1134/s1070427207050205] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
33
|
Katsu T, Tsunamoto Y, Hanioka N, Komagoe K, Masuda K, Narimatsu S. S,S,S-Tris(2-ethylhexyl) phosphorotrithioate as an effective solvent mediator for a mexiletine-sensitive membrane electrode. Anal Bioanal Chem 2007; 387:2057-64. [PMID: 17265086 DOI: 10.1007/s00216-006-1105-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2006] [Revised: 12/15/2006] [Accepted: 12/15/2006] [Indexed: 10/23/2022]
Abstract
S,S,S-tris(2-ethylhexyl) phosphorotrithioate proved to be an effective solvent mediator for constructing a mexiletine-sensitive membrane electrode in combination with an ion-exchanger, sodium tetrakis[3,5-bis(2-methoxyhexafluoro-2-propyl)phenyl]borate. Among a series of phosphorus compounds containing phosphoryl (P=O) groups, this solvent mediator showed the highest sensitivity to mexiletine in phosphate-buffered physiological saline containing 0.15 mol L-1 NaCl and 0.01 mol L-1 NaH2PO4/Na2HPO4 (pH 7.4), giving a detection limit of 2x10(-6) mol L-1 with a slope of 58.8 mV decade-1. This is the best reported detection limit of any mexiletine-sensitive electrode developed to date. Owing to its high selectivity toward inorganic cations, the electrode was used to determine the level of mexiletine in saliva, the monitoring of which is quite effective for controlling the dose of this drug noninvasively. The mexiletine concentrations determined with the mexiletine-sensitive electrode compared favorably with those determined by high-performance liquid chromatography.
Collapse
Affiliation(s)
- Takashi Katsu
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Tsushima, Okayama, 700-8530, Japan.
| | | | | | | | | | | |
Collapse
|
34
|
Potentiometric response and mechanism of anionic recognition of heterocalixarene-based ion selective electrodes. Anal Chim Acta 2007; 587:247-53. [PMID: 17386780 DOI: 10.1016/j.aca.2007.01.044] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2006] [Revised: 01/17/2007] [Accepted: 01/18/2007] [Indexed: 11/15/2022]
Abstract
The ion selective electrode (ISE)-based potentiometric approach is shown to be an effective means of characterizing the anion recognition sites in the molecular receptor calix[2]pyridino[2]pyrrole (CPP). In particular, potentiometric pH-measurements involving the use of experimental PVC-membranes based on CPP revealed the existence of both mono- and diprotonated forms of the receptor under readily accessible conditions. Based on these analyses, apparent surface protonation constants for this heterocalixarene were found to lie between 8.5-8.9 (pK(B1)) and 3.3-3.8 (pK(B2)). CPP was found to interact with targeted anionic analytes based on both coulombic and hydrogen bond interactions, as inferred from varying the kinds of ionic sites present within the membrane phase. Potentiometric selectivity studies revealed that CPP preferred "Y-shaped" anions (e.g. acetate, lactate, benzoate) over spherical anions (e.g. fluoride and chloride), fluoride over chloride within the set of spherical anions, and the ortho-isomer over the corresponding meta- and para-isomers in the case of hydroxybenzoate (salicylate and congeners). In the context of this study, the advantages of potentiometric determinations of acetylsalicylic acid using optimized PVC-membranes based on CPP relative to more conventional PVC-membrane ISEs based on traditional anion exchanger were also demonstrated.
Collapse
|
35
|
Hassan S, Mohmoud W, Elgazwy AS, Badawy N. A Novel Potentiometric Membrane Sensor Based on Aryl Palladium Complex for Selective Determination of Thiocyanate in the Saliva and Urine of Cigarette Smokers. ELECTROANAL 2006. [DOI: 10.1002/elan.200603640] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
36
|
|
37
|
Wilburn JP, Wright DW, Cliffel DE. Imaging of voltage-gated alamethicin pores in a reconstituted bilayer lipid membrane via scanning electrochemical microscopy. Analyst 2006; 131:311-6. [PMID: 16440098 DOI: 10.1039/b510649d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Voltage-gated biological ion channels were simulated by insertion of the peptaibol antibiotic alamethicin into reconstituted phosphatidylcholine bilayer lipid membranes (BLMs). Scanning electrochemical microscopy (SECM) was utilized to probe initial BLM resistivity, the insertion of alamethicin pores, and mass transport across the membrane. Acquired SECM images show the spatial location of inserted pore bundles, the verification of voltage control over the pore conformational state (open/closed), and variations in passive mass transport corresponding to different topographical areas of the BLM. SECM images were also used to evaluate overall BLM integrity prior to insertion as well as transport (flux in open state) and leakage (flux in closed state) currents following insertion.
Collapse
Affiliation(s)
- Jeremy P Wilburn
- Department of Chemistry, Vanderbilt University, Nashville, TN 37235-1822, USA
| | | | | |
Collapse
|
38
|
Li CX, Zeng YL, Liu YJ, Tang CR. Simultaneous Electrochemical Determination of Uric Acid and Ascorbic Acid on a Glassy Carbon Electrode Modified with Cobalt(II) Tetrakisphenylporphyrin. ANAL SCI 2006; 22:393-7. [PMID: 16733310 DOI: 10.2116/analsci.22.393] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A cobalt(II) tetrakisphenylporphyrin (Co(II)TPP) film modified glassy carbon electrode (Co(II)TPP-GCE) was prepared by just coating Co(II)TPP solution on the surface of the electrode. It can be used for the simultaneous determination of ascorbic acid and uric acid. The anodic peaks of AA and UA can be separated well. Owing to the strongly hydrophobic property of porphyrin, the modified electrode has good stability and long life. The linear range for UA and AA were 2.0 x 10(-6)-1.0 x 10(-4) M and 9.0 x 10(-6)-2.0 x 10(-3) M with detection limits of 5.0 x 10(-7) and 5.0 x 10(-6) M, respectively. Furthermore, metalloporphyrins of other kinds were also used to construct modified electrodes. Their performances were inferior compared with that of the Co(II)TPP modified electrode.
Collapse
Affiliation(s)
- Chun-Xiang Li
- Chemistry and Chemical Engineering College, Hunan University of Science and Technology, Xiangtan, P R China.
| | | | | | | |
Collapse
|
39
|
Mazloum Ardakani M, Jamshidpour M, Naeimi H, Moradi L. Thiocyanate Ion-selective PVC Membrane Electrode Based on N,N'-Ethylene-bis(4-methylsalicylidineiminato)nickel(II). ANAL SCI 2006; 22:1221-6. [PMID: 16966813 DOI: 10.2116/analsci.22.1221] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A highly selective poly(vinyl chloride) (PVC) membrane electrode based on an N,N'-ethylene-bis(4-methyl-salicylidineiminato) nickel(II) [Ni(EBMSI)] complex as a carrier for a thiocyanate-selective electrode is reported. The influences of the membrane composition, pH and possible interfering anions were investigated based on the response properties of the electrode. The electrode exhibited a good Nernstian slope of -58.9 +/- 0.7 mV decade(-1), over a wide pH range of 3.5 - 8.5 and a linear range of 1.0 x 10(-6) - 1.0 x 10(-1) M for thiocyanate. The detection limit of electrode was 3.1 x 10(-7) M SCN(-). The selectivity coefficients determined by a fixed interference method (FIM) indicate that a good discriminating ability towards the SCN- ion compared to other anions. The proposed sensor had a fast response time of about 5 - 15 s and could be used for at least 3 months without any considerable divergence in the potential. It was applied as an indicator electrode in the titration of thiocyanate with Ag+ and in the potentiometric determination of thiocyanate in saliva and urine samples.
Collapse
|
40
|
Paeng KJ, Jung HJ, Cho SJ, Lee ME. The potentiometric performances of cyclotetrahydroxysiloxane containing ferrocenyl moiety as an anion-selective membrane electrode. Microchem J 2005. [DOI: 10.1016/j.microc.2004.07.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
41
|
Burns DH, Calderon-Kawasaki K, Kularatne S. Buried Solvent Determines Both Anion-Binding Selectivity and Binding Stoichiometry with Hydrogen-Bonding Receptors. J Org Chem 2005; 70:2803-7. [PMID: 15787574 DOI: 10.1021/jo047756r] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The crystal structure of a tetraurea picket porphyrin-chloride anion complex has previously shown the anion to be situated between two adjacent ureas and hydrogen bonded via four NH protons (J. Am. Chem. Soc. 1998, 120, 11684-11692). The porphyrin receptor also binds a DMSO molecule and utilizes it as a participant in its anion recognition unit, in a manner similar to enzymes that bind water for use as part of their substrate recognition unit. The bound solvent molecule determines the anion-binding affinity, selectivity, and stoichiometry of binding. With a bound DMSO molecule, the tetraurea picket porphyrin is a highly selective receptor for chloride anion and binds all anions with a 1:1 binding stoichiometry. Absent the buried DMSO molecule, the receptor is selective for phosphate anion and binds chloride and phosphate anions with both 1:1 and 1:2 receptor-anion stoichiometries. Additionally, a remarkable reversal in the selectivity of anion complexation between various picket porphyrin receptors is observed, wherein the binding constant ratios change over 3 orders of magnitude as the receptor's number of urea pickets change from four to two. The latter receptor has no urea pickets available to bind to solvent after complexation with an anion. The results demonstrate that anion complexation with hydrogen-bonding receptors in a competitive solvent is enhanced when a ubiquitous solvent molecule is incorporated into the binding motif. In this way, competitive solvent adds to the overall complexation energy and thereby strengthens binding rather than weakens it, as commonly believed. The results are pertinent to drug design, for they suggest that pharmaceuticals need not be completely desolvated to selectively bind to their biological target when water can be included in the binding motif.
Collapse
Affiliation(s)
- Dennis H Burns
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260-0051, USA.
| | | | | |
Collapse
|
42
|
Ganjali MR, Akbar V, Ghorbani M, Norouzi P, Ahmadi A. Fluoride determination in some mouth wash preparations by a novel La(III) graphite coated membrane sensor based on amitraz. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2004.10.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
43
|
Zhang S, Echegoyen L. Selective Anion Sensing by a Tris-Amide CTV Derivative: 1H NMR Titration, Self-Assembled Monolayers, and Impedance Spectroscopy. J Am Chem Soc 2005; 127:2006-11. [PMID: 15701037 DOI: 10.1021/ja044411h] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A hydrogen-bond forming tris(amide) receptor based on cyclotriveratrylene (CTV) was prepared. Self-assembled monolayers (SAMs) of the receptor were formed on gold surfaces. Desorption experiments show a surface coverage of 2.26 x 10(-10) mol/cm(2). (1)H NMR and UV measurements confirm that the receptor exhibits the highest affinity for acetate ions among the anions studied. Electrochemical impedance was used to investigate anion sensing by the SAMs and proved to be an efficient and convenient technique for detecting anions in aqueous solutions. Upon binding acetate anions, the monolayer-modified gold electrodes show a drastic increase of the R(ct) values when Fe(CN)(6)(3-/4-) is used as the redox probe. When the probe was changed to a positively charged one, Ru(NH3)(6)(3+/2+), the R(ct) values decreased monotonically as the acetate concentration was increased, thus confirming the accumulation of negative surface charge upon anion binding. H(2)PO(4-) shows some interference when sensing AcO-. Other monovalent anions such as Cl-, Br-, NO3(-) and HSO4(-) do not bind to the CTV receptor either in solution or on the surfaces.
Collapse
Affiliation(s)
- Sheng Zhang
- Department of Chemistry, Clemson University, Clemson, SC 29634, USA
| | | |
Collapse
|
44
|
The Potentiometric Studies on the Effects of Various Functional Groups in Disiloxane as an Anion-Selective Ionophore. B KOREAN CHEM SOC 2005. [DOI: 10.5012/bkcs.2005.26.1.057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
45
|
Moriuchi-Kawakami T, Nishimura H, Fujimori K, Shibutani Y, Sugino T, Shimizu Y. Ion-sensing Behavior of Ion-selective Electrodes Based on 5,10,15,20-Tetrakis (4- n-Dodecylphenyl) porphyrin. CHEM LETT 2004. [DOI: 10.1246/cl.2004.1474] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
46
|
Johnson RD, Bachas LG. Ionophore-based ion-selective potentiometric and optical sensors. Anal Bioanal Chem 2003; 376:328-41. [PMID: 12734632 DOI: 10.1007/s00216-003-1931-0] [Citation(s) in RCA: 115] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2002] [Revised: 03/15/2003] [Accepted: 03/20/2003] [Indexed: 10/20/2022]
Abstract
This paper describes ion-selective electrodes (ISEs) and optodes with a focus on the fundamental mechanisms, response characteristics, and recognition elements (ionophores) described to date for these sensors. The topics covered review the most frequently encountered ideas about ionophore-based sensors, including the theoretical and experimental parameters that influence response, typical ionophore structures, useful membrane compositions, and applications. Since these sensors are applicable in a number of fields, such as clinical, environmental, and process monitoring, as well as more novel approaches such as microfluidic-based systems and micro/nanoprobes, this article provides descriptions that are oriented toward a more general audience. Furthermore, a large portion of this review describes the ionophore component itself in hopes of inspiring ideas in readers of how novel molecular architectures with new ionic targets or improved selectivity can be developed.
Collapse
Affiliation(s)
- R Daniel Johnson
- Department of Chemistry, University of Kentucky, Lexington 40505-0055, USA
| | | |
Collapse
|
47
|
Hassan SS, Abou Ghalia M, Amr AGE, Mohamed AH. Novel thiocyanate-selective membrane sensors based on di-, tetra-, and hexa-imidepyridine ionophores. Anal Chim Acta 2003. [DOI: 10.1016/s0003-2670(03)00172-7] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
48
|
|
49
|
Polymeric Acetate-Selective Electrodes Based on meso-(α,α,α,α)-Tetrakis-[(2-arylphenylurea)phenyl]porphyrins: Electormic and pH Effects. B KOREAN CHEM SOC 2002. [DOI: 10.5012/bkcs.2002.23.10.1409] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
50
|
Nishizawa S, Yokobori T, Kato R, Shioya T, Teramae N. Chloride Transfer across the Liquid–Liquid Interface Facilitated by a Mono-Thiourea as a Hydrogen-Bonding Ionophore. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2001. [DOI: 10.1246/bcsj.74.2343] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|