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Zhang T, Lai CZ, Fierke MA, Stein A, Bühlmann P. Advantages and Limitations of Reference Electrodes with an Ionic Liquid Junction and Three-Dimensionally Ordered Macroporous Carbon as Solid Contact. Anal Chem 2012; 84:7771-8. [DOI: 10.1021/ac3011507] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tiantian Zhang
- College of Chemical
Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, Sichuan 610065, China
- Department of Chemistry, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
| | - Chun-Ze Lai
- Department of Chemistry, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
| | - Melissa A. Fierke
- Department of Chemistry, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
| | - Andreas Stein
- Department of Chemistry, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
| | - Philippe Bühlmann
- Department of Chemistry, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
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Olson EJ, Bühlmann P. Getting More out of a Job Plot: Determination of Reactant to Product Stoichiometry in Cases of Displacement Reactions and n:n Complex Formation. J Org Chem 2011; 76:8406-12. [DOI: 10.1021/jo201624p] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eric J. Olson
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Philippe Bühlmann
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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Koseoglu S, Lai CZ, Ferguson C, Bühlmann P. Response Mechanism of Ion-Selective Electrodes Based on a Guanidine Ionophore: An Apparently ‘Two-Thirds Nernstian’ Response Slope. ELECTROANAL 2008. [DOI: 10.1002/elan.200704066] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Szigeti Z, Malon A, Vigassy T, Csokai V, Grün A, Wygladacz K, Ye N, Xu C, Chebny VJ, Bitter I, Rathore R, Bakker E, Pretsch E. Novel potentiometric and optical silver ion-selective sensors with subnanomolar detection limits. Anal Chim Acta 2006; 572:1-10. [PMID: 17723454 PMCID: PMC2883728 DOI: 10.1016/j.aca.2006.05.009] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2006] [Revised: 04/26/2006] [Accepted: 05/01/2006] [Indexed: 10/24/2022]
Abstract
Ten Ag+-selective ionophores have been characterized in terms of their potentiometric selectivities and complex formation constants in solvent polymeric membranes. The compounds with pi-coordination show much weaker interactions than those with thioether or thiocarbamate groups as the coordinating sites. Long-term studies with the best ionophores show that the lower detection limit of the best Ag+ sensors can be maintained in the subnanomolar range for at least 1 month. The best ionophores have also been characterized in fluorescent microspheres. The so far best lower detection limits of 3 x 10(-11) M (potentiometrically) and 2 x 10(-11) M Ag+ (optically) are found with bridged thiacalixarenes.
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Affiliation(s)
- Zsófia Szigeti
- Laboratorium für Organische Chemie, ETH Hönggerberg, CH-8093 Zürich, Switzerland
| | - Adam Malon
- Laboratorium für Organische Chemie, ETH Hönggerberg, CH-8093 Zürich, Switzerland
| | - Tamás Vigassy
- Laboratorium für Organische Chemie, ETH Hönggerberg, CH-8093 Zürich, Switzerland
| | - Viktor Csokai
- Department of Organic Chemical Technology, Budapest University of Technology and Economics, H-1521 Budapest, Hungary
| | - Alajos Grün
- Department of Organic Chemical Technology, Budapest University of Technology and Economics, H-1521 Budapest, Hungary
| | | | - Nan Ye
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Chao Xu
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Vincent J. Chebny
- Department of Chemistry, Marquette University, PO Box 1881, Milwaukee, WI 53210-1881, USA
| | - István Bitter
- Department of Organic Chemical Technology, Budapest University of Technology and Economics, H-1521 Budapest, Hungary
| | - Rajendra Rathore
- Department of Chemistry, Marquette University, PO Box 1881, Milwaukee, WI 53210-1881, USA
| | - Eric Bakker
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Ernö Pretsch
- Laboratorium für Organische Chemie, ETH Hönggerberg, CH-8093 Zürich, Switzerland
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