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Sasai R, Aoyama YH, Fujimura T. Ultra-sensitive detection of pyridine in water using zinc porphyrin incorporated in a transparent hydrophobic film. Sci Rep 2022; 12:5815. [PMID: 35388116 PMCID: PMC8987095 DOI: 10.1038/s41598-022-09927-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 03/30/2022] [Indexed: 11/09/2022] Open
Abstract
In this study, we investigated the axial coordination reaction between pyridine and zinc meso-tetra(4-sulfonatophenyl)porphyrin (ZnTPPS) incorporated in a transparent layered double hydroxide (LDH) film modified with 1-decanesulfonate (C10S) in an aqueous solution. The apparent equilibrium constant ([Formula: see text]) of the axial coordination reaction between pyridine and ZnTPPS incorporated in the transparent ZnTPPS/C10S/LDH film was approximately 260 times that of the corresponding reaction in an aqueous solution. The hydrophobisation of the LDH interlayer space by C10S, which led to the elimination of water molecules surrounding ZnTPPS and enabled the accumulation of pyridine molecules, was responsible for such a significant increase in the apparent [Formula: see text] value. The developed film can detect pyridine in aqueous solutions with ultra-high sensitivity in the order of 10-5 mol/L through changes in the colour tone, which is comparable to the molecular detection ability of insect antennae. The sensing response was also observed at pyridine concentrations as low as 10-9 mol/L.
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Affiliation(s)
- Ryo Sasai
- Graduate School of Natural Science and Technology, Shimane University, 1060 Nishi-Kawatsu-cho, Matsue, 690-8504, Japan.
| | - Yu-Hei Aoyama
- Graduate School of Natural Science and Technology, Shimane University, 1060 Nishi-Kawatsu-cho, Matsue, 690-8504, Japan
| | - Takuya Fujimura
- Graduate School of Natural Science and Technology, Shimane University, 1060 Nishi-Kawatsu-cho, Matsue, 690-8504, Japan.
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Ding H, Khan ST, Aguirre KN, Camarda RS, Gafney JB, Clearfield A, Sun L. Exfoliation of α-Zirconium Phosphate Using Tetraalkylammonium Hydroxides. Inorg Chem 2020; 59:7822-7829. [PMID: 32408750 DOI: 10.1021/acs.inorgchem.0c00937] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
α-Zirconium phosphate (α-ZrP), a classical layered compound, has found widespread application. Exfoliation of α-ZrP has been mainly achieved by propylamine (PA) or tetrabutylammonium hydroxide (TBAOH), but the exact mechanism of exfoliation has not been completely elucidated. We examined the feasibility of exfoliation utilizing tetraalkylammonium hydroxide (TXAOH) and investigated the stepwise intercalation/exfoliation mechanism of α-ZrP. All of the TXAOHs examined (carbon number of the branches: 1-4) were able to exfoliate α-ZrP in an aqueous dispersion under ultrasonication. Furthermore, exfoliation of α-ZrP by two different exfoliators (either a mixture of two or sequentially) was also investigated to pinpoint the exfoliation mechanism. Our results indicate that small TXA cations are kinetically preferred to diffuse into the galleries of α-ZrP, while large TXA cations can help open up the galleries and facilitate transport of the already intercalated cations. These findings should help fellow researchers to choose the most suitable exfoliators for their own projects and develop better intercalation/exfoliation systems.
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Affiliation(s)
- Hao Ding
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States.,Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Sana T Khan
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Keanu N Aguirre
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Robert S Camarda
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - John B Gafney
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Abraham Clearfield
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Luyi Sun
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States.,Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States.,Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
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Ramos-Garcés MV, Colón JL. Preparation of Zirconium Phosphate Nanomaterials and Their Applications as Inorganic Supports for the Oxygen Evolution Reaction. NANOMATERIALS 2020; 10:nano10050822. [PMID: 32357400 PMCID: PMC7711600 DOI: 10.3390/nano10050822] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 04/19/2020] [Accepted: 04/23/2020] [Indexed: 01/02/2023]
Abstract
Zirconium phosphate (ZrP) nanomaterials have been studied extensively ever since the preparation of the first crystalline form was reported in 1964. ZrP and its derivatives, because of their versatility, have found applications in several fields. Herein, we provide an overview of some advancements made in the preparation of ZrP nanomaterials, including exfoliation and morphology control of the nanoparticles. We also provide an overview of the advancements made with ZrP as an inorganic support for the electrocatalysis of the oxygen evolution reaction (OER). Emphasis is made on how the preparation of the ZrP electrocatalysts affects the activity of the OER.
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Affiliation(s)
- Mario V. Ramos-Garcés
- Department of Chemistry, University of Puerto Rico, 17 Ave. Universidad STE 1701, San Juan, PR 00925-2537, USA;
- NSF PREM Center for Interfacial Electrochemistry of Energy Materials, University of Puerto Rico, San Juan, PR 00925, USA
| | - Jorge L. Colón
- Department of Chemistry, University of Puerto Rico, 17 Ave. Universidad STE 1701, San Juan, PR 00925-2537, USA;
- NSF PREM Center for Interfacial Electrochemistry of Energy Materials, University of Puerto Rico, San Juan, PR 00925, USA
- Correspondence: ; Tel.: +1-787-402-2015
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Pore modulation of guest photophysics in metal organic frameworks: Photophysical studies of meso-tetra (N-methyl-4-pyridyl) porphine encapsulated within MOM-11 and MOM-12. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112329] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Fujimura T, Aoyama YH, Sasai R. Unique protonation behavior of cationic free-base porphyrins in the interlayer space of transparent solid films comprising layered α-zirconium phosphate. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.07.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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