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Smith LO, Crittenden DL. Acid-Base Chemistry Provides a Simple and Cost-Effective Route to New Redox-Active Ionic Liquids. Chem Asian J 2023; 18:e202201296. [PMID: 36659860 DOI: 10.1002/asia.202201296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/19/2023] [Accepted: 01/19/2023] [Indexed: 01/21/2023]
Abstract
Redox-active ionic liquids (RAILs) hold great promise as high density electrochemical energy storage materials, but are hampered by high costs and low bulk conductivities. In this work, we introduce and electrochemically characterise novel redox-active protic ionic liquids (RAPILs) formed by acid-base neutralisation from cheap and plentiful starting materials. We also demonstrate a novel RAIL-in-IL solvent system for electrochemical characterisation of RAPILs, which enables efficient and cost-effective determination of redox potentials and screening for electrochemical reversibility. Of the redox-active ionic liquids tested in this work, only propylammonium 4-nitrophenylacetate demonstrates completely reversible electrochemistry and preservation of ionic character upon redox cycling under acidic or neutral conditions. Propylammonium 2,5-dihydroxyphenyl-carboxylate also demonstrates two reversible redox processes, but is unstable to oxidation at 0.27 V vs Ag (-0.14 V vs Fc), most likely forming an uncharged benzoquinone species. Using the lessons learned from this prototypical set of RAPILs, we propose design criteria to guide future experimental and computational work.
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Affiliation(s)
- Lachlan O Smith
- School of Physical and Chemical Sciences, University of Canterbury, Christchurch, 8140, New Zealand
| | - Deborah L Crittenden
- School of Physical and Chemical Sciences, University of Canterbury, Christchurch, 8140, New Zealand
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3
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Bruzon DAV, Tapang GA, Martinez IS. An electrochemical setup designed for carbon dioxide solubility measurements in ionic liquids. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2021; 92:024102. [PMID: 33648088 DOI: 10.1063/5.0019479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 01/12/2021] [Indexed: 06/12/2023]
Abstract
An electrochemical setup was designed and built to evaluate carbon dioxide solubility in ionic liquids. The setup can simultaneously measure amounts of CO2 in the gas and in the ionic liquid phase, making it very useful for in situ electrochemical measurements. The home-built glass cell is able to withstand high vacuum allowing the ionic liquid samples to be properly evacuated before characterization and kept free of contaminants during experiments. A pressure gauge attached to the setup enables continuous monitoring of gas added to the system. This kind of configuration can measure gas solubility in ionic liquids expressed as Henry's constants determined from generated plots of dissolved gas concentration in the ionic liquid vs headspace gas pressure. It also serves as a more economical alternative to other gas solubility measurement techniques, as it is predominantly made of glass, and requires minimal sample amounts. The setup can be useful in determining the solubility of various gases in ionic liquids.
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Affiliation(s)
- D A V Bruzon
- Institute of Chemistry, University of the Philippines-Diliman, Quezon City 1101, Philippines
| | - G A Tapang
- National Institute of Physics, University of the Philippines-Diliman, Quezon City 1101, Philippines
| | - I S Martinez
- Institute of Chemistry, University of the Philippines-Diliman, Quezon City 1101, Philippines
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4
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Zhu CY, Li HN, Yang J, Li JJ, Ye JR, Xu ZK. Vacuum-assisted diamine monomer distribution for synthesizing polyamide composite membranes by interfacial polymerization. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118557] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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5
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Voltammetry and Spectroelectrochemistry of TCNQ in Acetonitrile/RTIL Mixtures. Molecules 2020; 25:molecules25020303. [PMID: 31940892 PMCID: PMC7024151 DOI: 10.3390/molecules25020303] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 12/30/2019] [Accepted: 01/04/2020] [Indexed: 12/03/2022] Open
Abstract
Understanding the solvation and ion-pairing interactions of anionic substrates in room-temperature ionic liquids (RTIL) is key for the electrochemical applications of these new classes of solvents. In this work, cyclic voltammetry and visible and infrared spectroelectrochemistry of tetracyanoquinodimethane (TCNQ) was examined in molecular (acetonitrile) and RTIL solvents, as well as mixtures of these solvents. The overall results were consistent with the formation of RTIL/acetonitrile nanodomains. The voltammetry indicated that the first electrogenerated product, TCNQ−, was not incorporated into the RTIL nanodomain, while the second electrogenerated product, TCNQ2−, was strongly attracted to the RTIL nanodomain. The visible spectroelectrochemistry was also consistent with these observations. Infrared spectroelectrochemistry showed no discrete ion pairing between the cation and TCNQ− in either the acetonitrile or RTIL solutions. Discrete ion pairing was, however, observed in the acetonitrile domain between the tetrabutylammonium ion and TCNQ2−. On the other hand, no discrete ion pairing was observed in BMImPF6 or BMImBF4 solutions with TCNQ2−. In BMImNTf2, however, discrete ion pairs were formed with BMIm+ and TCNQ2−. Density function theory (DFT) calculations showed that the cations paired above and below the aromatic ring. The results of this work support the understanding of the redox chemistry in RTIL solutions.
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Hayyan M, Ibrahim MH, Hayyan A, Hashim MA. INVESTIGATING THE LONG-TERM STABILITY AND KINETICS OF SUPEROXIDE ION IN DIMETHYL SULFOXIDE CONTAINING IONIC LIQUIDS AND THE APPLICATION OF THIOPHENE DESTRUCTION. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2017. [DOI: 10.1590/0104-6632.20170341s20150231] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- M. Hayyan
- University of Malaya, Malaysia; University of Malaya, Malaysia
| | - M. H. Ibrahim
- University of Malaya, Malaysia; University of Malaya, Malaysia
| | - A. Hayyan
- University of Malaya, Malaysia; University of Malaya, Malaysia
| | - M. Ali Hashim
- University of Malaya, Malaysia; University of Malaya, Malaysia
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Rao H, Zhang Z, Ge H, Liu X, Zou P, Wang X, Wang Y. Enhanced amperometric sensing using a NiCo2O4/nitrogen-doped reduced graphene oxide/ionic liquid ternary composite for enzyme-free detection of glucose. NEW J CHEM 2017. [DOI: 10.1039/c7nj00077d] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Schematic illustration of the fabrication of NiCo2O4/N-rGO/ILs/GCE.
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Affiliation(s)
- Hanbing Rao
- College of Science
- Sichuan Agricultural University
- Ya'an 625014
- P. R. China
| | - Zhaoyi Zhang
- College of Science
- Sichuan Agricultural University
- Ya'an 625014
- P. R. China
| | - Hongwei Ge
- College of Science
- Sichuan Agricultural University
- Ya'an 625014
- P. R. China
| | - Xin Liu
- College of Science
- Sichuan Agricultural University
- Ya'an 625014
- P. R. China
| | - Ping Zou
- College of Science
- Sichuan Agricultural University
- Ya'an 625014
- P. R. China
| | - Xianxiang Wang
- College of Science
- Sichuan Agricultural University
- Ya'an 625014
- P. R. China
| | - Yanying Wang
- College of Science
- Sichuan Agricultural University
- Ya'an 625014
- P. R. China
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Liu L, Wang C, Zhuo K. Cetyltrimethylammonium bromide(CTAB)-ionic liquid composite modified electrode for sensitive cyclic voltammetric determination of bisphenol A. Chem Res Chin Univ 2016. [DOI: 10.1007/s40242-016-6162-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Anaredy R, Lucio AJ, Shaw SK. Adventitious Water Sorption in a Hydrophilic and a Hydrophobic Ionic Liquid: Analysis and Implications. ACS OMEGA 2016; 1:407-416. [PMID: 31457136 PMCID: PMC6640805 DOI: 10.1021/acsomega.6b00104] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 09/05/2016] [Indexed: 05/26/2023]
Abstract
The sorption of water in ionic liquids (ILs) is nearly impossible to prevent, and its presence is known to have a significant effect on the resulting mixtures' bulk and interfacial properties. The so-called "saturation" water concentrations have been reported, but water sorption rates and mixing behaviors in ILs are often overlooked as variables that can significantly change the resulting mixtures' physical properties over experimental time frames of several minutes to hours. The purpose of this work is to establish a range of these effects over similar time frames for two model ILs, protic ethylammonium nitrate (EAN) and aprotic butyltrimethylammonium bis(trifluoromethylsulfonyl)imide (N1114 TFSI), as they are exposed to controlled dry and humid environments. We report the water sorption rates for these liquids (270 ± 30 ppm/min for EAN and 30 ± 3 ppm/min for N1114 TFSI), examine the accuracy and precision associated with common methods for reporting water content, and discuss implications of changing water concentrations on experimental data and results.
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Collins J, Zhang T, Huston S, Sun F, Zhang YHP, Fu J. A Hidden Transhydrogen Activity of a FMN-Bound Diaphorase under Anaerobic Conditions. PLoS One 2016; 11:e0154865. [PMID: 27145082 PMCID: PMC4856307 DOI: 10.1371/journal.pone.0154865] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 04/20/2016] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Redox cofactors of NADH/NADPH participate in many cellular metabolic pathways for facilitating the electron transfer from one molecule to another in redox reactions. Transhydrogenase plays an important role in linking catabolism and anabolism, regulating the ratio of NADH/NADPH in cells. The cytoplasmic transhydrogenases could be useful to engineer synthetic biochemical pathways for the production of high-value chemicals and biofuels. METHODOLOGY/PRINCIPAL FINDINGS A transhydrogenase activity was discovered for a FMN-bound diaphorase (DI) from Geobacillus stearothermophilus under anaerobic conditions. The DI-catalyzed hydride exchange were monitored and characterized between a NAD(P)H and a thio-modified NAD+ analogue. This new function of DI was demonstrated to transfer a hydride from NADPH to NAD+ that was consumed by NAD-specific lactate dehydrogenase and malic dehydrogenase. CONCLUSIONS/SIGNIFICANCE We discover a novel transhydrogenase activity of a FMN-DI by stabilizing the reduced state of FMNH2 under anaerobic conditions. FMN-DI was demonstrated to catalyze the hydride transfer between NADPH and NAD+. In the future, it may be possible to incorporate this FMN-DI into synthetic enzymatic pathways for balancing NADH generation and NADPH consumption for anaerobic production of biofuels and biochemicals.
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Affiliation(s)
- John Collins
- Department of Chemistry, Rutgers University-Camden, Camden, New Jersey 08102, United States of America
| | - Ting Zhang
- Department of Chemistry, Rutgers University-Camden, Camden, New Jersey 08102, United States of America
| | - Scott Huston
- Department of Chemistry, Rutgers University-Camden, Camden, New Jersey 08102, United States of America
| | - Fangfang Sun
- Cell Free Bioinnovations Inc., Blacksburg, Virginia 24060, United States of America
| | - Y.-H. Percival Zhang
- Cell Free Bioinnovations Inc., Blacksburg, Virginia 24060, United States of America
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States of America
| | - Jinglin Fu
- Department of Chemistry, Rutgers University-Camden, Camden, New Jersey 08102, United States of America
- Center for Computational and Integrative Biology, Rutgers University-Camden, Camden, New Jersey 08102, United States of America
- * E-mail:
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11
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Tang Y, Chi X, Zou S, Zeng X. Facet effects of palladium nanocrystals for oxygen reduction in ionic liquids and for sensing applications. NANOSCALE 2016; 8:5771-9. [PMID: 26910528 PMCID: PMC5640266 DOI: 10.1039/c5nr07502e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Palladium nanocrystals enclosed by {100} and {110} crystal facets, were successfully synthesized through an aqueous one-pot synthesis method. A new thermal annealing approach was developed for fabricating these palladium nanocrystals as a working electrode on a gas permeable membrane to study the facet effects of the oxygen reduction process in an ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([Bmpy][NTf2]). Results were compared with the same processes at a conventional platinum electrode. Our study shows that the structural difference between the two facets of Pd nanocrystals has little effect on the oxygen reduction process but significantly affects the oxidation process of the superoxide. It is found that the Pd{110}/IL interface can better stabilize superoxide radicals revealed by a more positive oxidation potential compared to that of Pd{100}. In addition, the analytical characteristic of utilizing both palladium nanocrystals as electrodes for oxygen sensing is comparable with a polycrystal platinum oxygen sensor, in which Pd{110} presents the best sensitivity and lowest detection limit. Our results demonstrate the facet-dependence of oxygen reduction in an ionic liquid medium and provide the fundamental information needed to guide the applications of palladium nanocrystals in electrochemical gas sensor and fuel cell research.
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Affiliation(s)
- Yongan Tang
- Department of Chemistry, Oakland University, Rochester, Michigan 48309, USA.
| | - Xiaowei Chi
- Department of Chemistry, Oakland University, Rochester, Michigan 48309, USA.
| | - Shouzhong Zou
- Department of Chemistry, American University, Washington DC 20016, USA
| | - Xiangqun Zeng
- Department of Chemistry, Oakland University, Rochester, Michigan 48309, USA.
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Vu HTT, Le HTV, Pham YTH, Le HQ, Pham PH. Electrochemical Detection of TNT by Differential Pulse Adsorptive Stripping Voltammetry at Carbon Paste Electrode Modified by 1-Butyl-3-methylimidazolium Tetrafluoroborate. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10691] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ha Thi Thu Vu
- Institute of Chemistry; Vietnam Academy of Science and Technology; Hanoi 1000 Vietnam
| | | | - Yen Thi Hai Pham
- Institute of Chemistry; Vietnam Academy of Science and Technology; Hanoi 1000 Vietnam
| | - Hung Quoc Le
- Institute of Chemistry; Vietnam Academy of Science and Technology; Hanoi 1000 Vietnam
| | - Phong Hong Pham
- Institute of Chemistry; Vietnam Academy of Science and Technology; Hanoi 1000 Vietnam
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Abstract
Superoxide ion (O2(•-)) is of great significance as a radical species implicated in diverse chemical and biological systems. However, the chemistry knowledge of O2(•-) is rather scarce. In addition, numerous studies on O2(•-) were conducted within the latter half of the 20th century. Therefore, the current advancement in technology and instrumentation will certainly provide better insights into mechanisms and products of O2(•-) reactions and thus will result in new findings. This review emphasizes the state-of-the-art research on O2(•-) so as to enable researchers to venture into future research. It comprises the main characteristics of O2(•-) followed by generation methods. The reaction types of O2(•-) are reviewed, and its potential applications including the destruction of hazardous chemicals, synthesis of organic compounds, and many other applications are highlighted. The O2(•-) environmental chemistry is also discussed. The detection methods of O2(•-) are categorized and elaborated. Special attention is given to the feasibility of using ionic liquids as media for O2(•-), addressing the latest progress of generation and applications. The effect of electrodes on the O2(•-) electrochemical generation is reviewed. Finally, some remarks and future perspectives are concluded.
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Affiliation(s)
| | | | - Inas M AlNashef
- Department of Chemical and Environmental Engineering, Masdar Institute of Science and Technology , Abu Dhabi, United Arab Emirates
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Sajid M, Nazal MK, Mansha M, Alsharaa A, Jillani SMS, Basheer C. Chemically modified electrodes for electrochemical detection of dopamine in the presence of uric acid and ascorbic acid: A review. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.09.006] [Citation(s) in RCA: 234] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ranjan R, Olson J, Singh P, Lorance ED, Buttry DA, Gould IR. Reversible Electrochemical Trapping of Carbon Dioxide Using 4,4'-Bipyridine That Does Not Require Thermal Activation. J Phys Chem Lett 2015; 6:4943-4946. [PMID: 26618410 DOI: 10.1021/acs.jpclett.5b02220] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Sequestering carbon dioxide emissions by the trap and release of CO2 via thermally activated chemical reactions has proven problematic because of the energetic requirements of the release reactions. Here we demonstrate trap and release of carbon dioxide using electrochemical activation, where the reactions in both directions are exergonic and proceed rapidly with low activation barriers. One-electron reduction of 4,4'-bipyridine forms the radical anion, which undergoes rapid covalent bond formation with carbon dioxide to form an adduct. One-electron oxidation of this adduct releases the bipyridine and carbon dioxide. Reversible trap and release of carbon dioxide over multiple cycles is demonstrated in solution at room temperature, and without the requirement for thermal activation.
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Affiliation(s)
- Rajeev Ranjan
- School of Molecular Sciences, Arizona State University , Tempe, Arizona 85287, United States
| | - Jarred Olson
- School of Molecular Sciences, Arizona State University , Tempe, Arizona 85287, United States
| | - Poonam Singh
- School of Molecular Sciences, Arizona State University , Tempe, Arizona 85287, United States
| | - Edward D Lorance
- Department of Chemistry, Vanguard University , Costa Mesa, California 92926, United States
| | - Daniel A Buttry
- School of Molecular Sciences, Arizona State University , Tempe, Arizona 85287, United States
| | - Ian R Gould
- School of Molecular Sciences, Arizona State University , Tempe, Arizona 85287, United States
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Murugappan K, Silvester DS. Sensors for highly toxic gases: methylamine and hydrogen chloride detection at low concentrations in an ionic liquid on Pt screen printed electrodes. SENSORS (BASEL, SWITZERLAND) 2015; 15:26866-76. [PMID: 26506358 PMCID: PMC4634386 DOI: 10.3390/s151026866] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 10/15/2015] [Accepted: 10/19/2015] [Indexed: 11/16/2022]
Abstract
Commercially available Pt screen printed electrodes (SPEs) have been employed as possible electrode materials for methylamine (MA) and hydrogen chloride (HCl) gas detection. The room temperature ionic liquid (RTIL) 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C₂mim][NTf₂]) was used as a solvent and the electrochemical behaviour of both gases was first examined using cyclic voltammetry. The reaction mechanism appears to be the same on Pt SPEs as on Pt microelectrodes. Furthermore, the analytical utility was studied to understand the behaviour of these highly toxic gases at low concentrations on SPEs, with calibration graphs obtained from 10 to 80 ppm. Three different electrochemical techniques were employed: linear sweep voltammetry (LSV), differential pulse voltammetry (DPV) and square wave voltammetry (SWV), with no significant differences in the limits of detection (LODs) between the techniques (LODs were between 1.4 to 3.6 ppm for all three techniques for both gases). The LODs achieved on Pt SPEs were lower than the current Occupational Safety and Health Administration Permissible Exposure Limit (OSHA PEL) limits of the two gases (5 ppm for HCl and 10 ppm for MA), suggesting that Pt SPEs can successfully be combined with RTILs to be used as cheap alternatives for amperometric gas sensing in applications where these toxic gases may be released.
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Affiliation(s)
- Krishnan Murugappan
- Nanochemistry Research Institute, Department of Chemistry, Curtin University, GPO Box U1987, Perth 6845, WA, Australia.
| | - Debbie S Silvester
- Nanochemistry Research Institute, Department of Chemistry, Curtin University, GPO Box U1987, Perth 6845, WA, Australia.
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Balaji S, Kannan K, Moon IS. The electrochemical oxidation of toluene catalysed by Co(ii) in N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide. Phys Chem Chem Phys 2015; 17:30983-7. [DOI: 10.1039/c5cp04151a] [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
Co(ii) catalysed electro-oxidation of toluene in room temperature ionic liquid.
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Affiliation(s)
- S. Balaji
- Department of Chemical Engineering
- Sunchon National University
- Suncheon 540-742
- South Korea
| | - K. Kannan
- Department of Chemical Engineering
- Sunchon National University
- Suncheon 540-742
- South Korea
| | - I. S. Moon
- Department of Chemical Engineering
- Sunchon National University
- Suncheon 540-742
- South Korea
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Wang J, Jin W, Zhang X, Hu C, Luo Q, Lin Y, Hu S. Rapid in Situ Detection of Ultratrace 2,4-Dinitrotoluene Solids by a Sandwiched Paper-like Electrochemical Sensor. Anal Chem 2014; 86:8383-90. [DOI: 10.1021/ac501973x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Juan Wang
- Key Laboratory
of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
- State Key Laboratory
of Transducer Technology, Chinese Academy of Sciences, Beijing 100080, China
| | - Wei Jin
- Key Laboratory
of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xing Zhang
- Key Laboratory
of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Chengguo Hu
- Key Laboratory
of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
- State Key Laboratory
of Transducer Technology, Chinese Academy of Sciences, Beijing 100080, China
| | - Qingying Luo
- Key Laboratory
of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yi Lin
- Key Laboratory
of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Shengshui Hu
- Key Laboratory
of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
- State Key Laboratory
of Transducer Technology, Chinese Academy of Sciences, Beijing 100080, China
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Aaronson BDB, Lai SCS, Unwin PR. Spatially resolved electrochemistry in ionic liquids: surface structure effects on triiodide reduction at platinum electrodes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:1915-1919. [PMID: 24479903 DOI: 10.1021/la500271f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Understanding the relationship between electrochemical activity and electrode structure is vital for improving the efficiency of dye-sensitized solar cells. Here, the reduction of triiodide to iodide in 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIm][BF4]) room temperature ionic liquid (RTIL) is investigated on polycrystalline platinum using scanning electrochemical cell microscopy (SECCM) and correlated to the crystallographic orientation from electron backscatter diffraction (EBSD). Although the rate determining step in all grains was the first electron transfer, significant grain-dependent variations in activity were revealed, with grains with a dominant (110) crystallographic character exhibiting higher catalytic activity compared to those with a major (100) orientation. The SECCM technique is demonstrated to resolve heterogeneity in activity, highlighting that methods incorporating polycrystalline electrodes miss vital details for understanding and optimizing electrocatalysts. An additional advantage of the SECCM over single-crystal techniques is its ability to probe high index facets.
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Affiliation(s)
- Barak D B Aaronson
- Department of Chemistry, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
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Ernst S, Norman SE, Hardacre C, Compton RG. The electrochemical reduction of 1-bromo-4-nitrobenzene at zinc electrodes in a room-temperature ionic liquid: a facile route for the formation of arylzinc compounds. Phys Chem Chem Phys 2014; 16:4478-82. [DOI: 10.1039/c3cp54861a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Wang C, Xu P, Zhuo K. Ionic Liquid Functionalized Graphene-Based Electrochemical Biosensor for Simultaneous Determination of Dopamine and Uric Acid in the Presence of Ascorbic Acid. ELECTROANAL 2013. [DOI: 10.1002/elan.201300345] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Ernst S, Ward KR, Norman SE, Hardacre C, Compton RG. Changed reactivity of the 1-bromo-4-nitrobenzene radical anion in a room temperature ionic liquid. Phys Chem Chem Phys 2013; 15:6382-9. [PMID: 23525257 DOI: 10.1039/c3cp51004b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Radical anions of 1-bromo-4-nitrobenzene (p-BrC6H4NO2) are shown to be reactive in the room temperature ionic liquid N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, ([C4mPyrr][NTf2]), by means of voltammetric measurements. In particular, they are shown to react via a DISP type mechanism such that the electrolysis of p-BrC6H4NO2 occurs consuming between one and two electrons per reactant molecule, leading to the formation of the nitrobenzene radical anion and bromide ions. This behaviour is a stark contrast to that in conventional non-aqueous solvents such as acetonitrile, dimethyl sulfoxide or N,N-dimethylformamide, which suggests that the ionic solvent promotes the reactivity of the radical anion, probably via stabilisation of the charged products.
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Affiliation(s)
- Sven Ernst
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, Oxford, UK
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23
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Hayyan M, Mjalli FS, Hashim MA, AlNashef IM. An investigation of the reaction between 1-butyl-3-methylimidazolium trifluoromethanesulfonate and superoxide ion. J Mol Liq 2013. [DOI: 10.1016/j.molliq.2013.02.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Zhao K, Liu T, Wang G, Chang X, Xue D, Belfield KD, Fang Y. A Butterfly-Shaped Pyrene Derivative of Cholesterol and Its Uses as a Fluorescent Probe. J Phys Chem B 2013; 117:5659-67. [DOI: 10.1021/jp312318b] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keru Zhao
- Key Laboratory of
Applied Surface
and Colloid Chemistry (Ministry of Education), School of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
| | - Taihong Liu
- Key Laboratory of
Applied Surface
and Colloid Chemistry (Ministry of Education), School of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
| | - Gang Wang
- Key Laboratory of
Applied Surface
and Colloid Chemistry (Ministry of Education), School of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
| | - Xingmao Chang
- Key Laboratory of
Applied Surface
and Colloid Chemistry (Ministry of Education), School of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
| | - Dong Xue
- Key Laboratory of
Applied Surface
and Colloid Chemistry (Ministry of Education), School of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
| | - Kevin D. Belfield
- Key Laboratory of
Applied Surface
and Colloid Chemistry (Ministry of Education), School of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
- Department of Chemistry, University of Central Florida, P.O. Box 162366, Orlando,
Florida 32816, United States
| | - Yu Fang
- Key Laboratory of
Applied Surface
and Colloid Chemistry (Ministry of Education), School of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
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25
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Hayyan M, Mjalli FS, Hashim MA, AlNashef IM, Mei TX. Investigating the electrochemical windows of ionic liquids. J IND ENG CHEM 2013. [DOI: 10.1016/j.jiec.2012.07.011] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Stockmann TJ, Ding Z. Tetraoctylphosphonium Tetrakis(pentafluorophenyl)borate Room Temperature Ionic Liquid toward Enhanced Physicochemical Properties for Electrochemistry. J Phys Chem B 2012; 116:12826-34. [DOI: 10.1021/jp3081832] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tom J. Stockmann
- Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, Ontario,
Canada, N6A 5B7
| | - Zhifeng Ding
- Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, Ontario,
Canada, N6A 5B7
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27
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Hayyan M, Mjalli FS, AlNashef IM, Hashim MA. Generation and stability of superoxide ion in tris(pentafluoroethyl)trifluorophosphate anion-based ionic liquids. J Fluor Chem 2012. [DOI: 10.1016/j.jfluchem.2012.06.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Stockmann TJ, Montgomery AM, Ding Z. Determination of alkali metal ion transfers at liquid|liquid interfaces stabilized by a micropipette. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2012.08.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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A novel and simple strategy for simultaneous determination of dopamine, uric acid and ascorbic acid based on the stacked graphene platelet nanofibers/ionic liquids/chitosan modified electrode. Talanta 2012; 99:984-8. [DOI: 10.1016/j.talanta.2012.07.077] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Revised: 07/26/2012] [Accepted: 07/30/2012] [Indexed: 11/20/2022]
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30
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Hayyan M, Mjalli FS, Hashim MA, AlNashef IM. Generation of Superoxide Ion in Pyridinium, Morpholinium, Ammonium, and Sulfonium-Based Ionic Liquids and the Application in the Destruction of Toxic Chlorinated Phenols. Ind Eng Chem Res 2012. [DOI: 10.1021/ie3006879] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Maan Hayyan
- University
of Malaya Centre
for Ionic Liquids (UMCiL), University of Malaya, 50603 Kuala Lumpur, Malaysia
- Department of Chemical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Farouq S. Mjalli
- Petroleum and Chemical Engineering
Department, Sultan Qaboos University, Muscat
123, Oman
| | - Mohd Ali Hashim
- University
of Malaya Centre
for Ionic Liquids (UMCiL), University of Malaya, 50603 Kuala Lumpur, Malaysia
- Department of Chemical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Inas M. AlNashef
- Chemical Engineering
Department, King Saud University, Riyadh
11421, Saudi Arabia
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31
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Ernst S, Henstridge MC, Compton RG. Switching transition states with changing electrode potential: Zn(II)/Zn electrodeposition on glassy carbon in the N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid. J Solid State Electrochem 2012. [DOI: 10.1007/s10008-012-1731-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Hu C, Bai X, Wang Y, Jin W, Zhang X, Hu S. Inkjet printing of nanoporous gold electrode arrays on cellulose membranes for high-sensitive paper-like electrochemical oxygen sensors using ionic liquid electrolytes. Anal Chem 2012; 84:3745-50. [PMID: 22424097 DOI: 10.1021/ac3003243] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A simple approach to the mass production of nanoporous gold electrode arrays on cellulose membranes for electrochemical sensing of oxygen using ionic liquid (IL) electrolytes was established. The approach, combining the inkjet printing of gold nanoparticle (GNP) patterns with the self-catalytic growth of these patterns into conducting layers, can fabricate hundreds of self-designed gold arrays on cellulose membranes within several hours using an inexpensive inkjet printer. The resulting paper-based gold electrode arrays (PGEAs) had several unique properties as thin-film sensor platforms, including good conductivity, excellent flexibility, high integration, and low cost. The porous nature of PGEAs also allowed the addition of electrolytes from the back cellulose membrane side and controllably produced large three-phase electrolyte/electrode/gas interfaces at the front electrode side. A novel paper-based solid-state electrochemical oxygen (O(2)) sensor was therefore developed using an IL electrolyte, 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF(6)). The sensor looked like a piece of paper but possessed high sensitivity for O(2) in a linear range from 0.054 to 0.177 v/v %, along with a low detection limit of 0.0075% and a short response time of less than 10 s, foreseeing its promising applications in developing cost-effective and environment-friendly paper-based electrochemical gas sensors.
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Affiliation(s)
- Chengguo Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, PR China.
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33
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Long term stability of superoxide ion in piperidinium, pyrrolidinium and phosphonium cations-based ionic liquids and its utilization in the destruction of chlorobenzenes. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2011.10.008] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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Wang Z, Lin P, Baker GA, Stetter J, Zeng X. Ionic Liquids as Electrolytes for the Development of a Robust Amperometric Oxygen Sensor. Anal Chem 2011; 83:7066-73. [DOI: 10.1021/ac201235w] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhe Wang
- Department of Chemistry, Oakland University, Rochester, Michigan 48309, United States
| | - Peiling Lin
- Department of Chemistry, Oakland University, Rochester, Michigan 48309, United States
| | - Gary A. Baker
- Department of Chemistry, University of Missouri−Columbia, Columbia, Missouri 65211, United States
| | - Joseph Stetter
- KWJ Engineering Incorporated, 8440 Central Avenue [Suite 2B or 2D], Newark, California 94560, United States
| | - Xiangqun Zeng
- Department of Chemistry, Oakland University, Rochester, Michigan 48309, United States
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35
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Zhang R, Li N, Wang C, Bai Y, Ren R, Gao S, Yu W, Zhao T, Zhang H. Ionic liquid foam floatation coupled with solid phase extraction for separation and determination of hormones by high-performance liquid chromatography. Anal Chim Acta 2011; 704:98-109. [PMID: 21907026 DOI: 10.1016/j.aca.2011.08.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Accepted: 08/08/2011] [Indexed: 12/27/2022]
Abstract
The foaming property of ionic liquids (ILs) was found and the factors that can influence foamability of the ILs were investigated. Based on the property of the ILs, the foam floatation-solid phase extraction (FF-SPE) was developed. The IL-based FF-SPE was applied to the extraction and concentration of steroid hormones, including corticosterone, 17-β-estadiol, 17-α-estradiol, 19-nortestosterone, estrone, testosterone, 17-α-hydroxyprogesterone, medroxyprogesterone, chloromadinon 17-acetate, norethisterone acetate, medroxyprogesterone-17-acetate, progesterone, 17-β-estradiol 3-benzoate and testosteron 17-propionate in water samples and then the steroid hormones were determined by high-performance liquid chromatography. The extraction and concentration were performed synchronously in 10 min. Some experimental conditions were examined and optimized. The recoveries ranged from 50.6% to 95.2% for lake water sample and from 53.4% to 98.7% for rain water sample. The precision ranged from 2.43% to 7.43% for the lake water sample and 2.07-7.01% for rain water sample. Based on the foaming property of ILs, the application of foam floatation should be widened.
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Affiliation(s)
- Rui Zhang
- College of Chemistry, Jilin University, Changchun, PR China
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36
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Ernst S, Aldous L, Compton RG. The voltammetry of surface bound 2-anthraquinonyl groups in room temperature ionic liquids: Cation size effects. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.06.073] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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37
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Fu C, Aldous L, Dickinson EJF, Manan NSA, Compton RG. The Kinetics of Ferrocene Volatilisation from an Ionic Liquid. Chemphyschem 2011; 12:1708-13. [DOI: 10.1002/cphc.201100204] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 04/20/2011] [Indexed: 11/11/2022]
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38
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Fu C, Aldous L, Dickinson EJF, Manan NSA, Compton RG. Volatilisation of ferrocene from ionic liquids: kinetics and mechanism. Chem Commun (Camb) 2011; 47:7083-5. [DOI: 10.1039/c1cc12336j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Wang H, Qu X, Lu J, Bond AM, Zhao C. Underpotential and overpotential electrocrystallization of semiconducting silver-tetracyanoquinodimethane onto gold substrates from an ionic liquid. CrystEngComm 2011. [DOI: 10.1039/c1ce05165b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Guo CX, Lu ZS, Lei Y, Li CM. Ionic liquid–graphene composite for ultratrace explosive trinitrotoluene detection. Electrochem commun 2010. [DOI: 10.1016/j.elecom.2010.06.028] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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41
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O'Mahony AM, Compton RG. The Mediated Detection of Hydrogen Sulfide in Room Temperature Ionic Liquids. ELECTROANAL 2010. [DOI: 10.1002/elan.201000283] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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