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Antonio A, Dworzak MR, Korman KJ, Yap GPA, Bloch ED. Anion Binding as a Strategy for the Synthesis of Porous Salts. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2022; 34:10823-10831. [PMID: 36590703 PMCID: PMC9799027 DOI: 10.1021/acs.chemmater.2c01476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 10/25/2022] [Indexed: 06/17/2023]
Abstract
Porous salts have recently emerged as a promising new class of ultratunable permanently microporous solids. These adsorbents, which were first reported as ionic solids based on porous cations and anions, can be isolated from a wide variety of charged, permanently porous coordination cages. A challenge in realizing the full tunability of such systems, however, lies in the fact that the majority of coordination cages for which surface areas have been reported are comprised of charge-balanced inorganic and organic building blocks that result in neutral cages. As such, most reported permanently porous coordination cages cannot be used as reagents in the synthesis of porous salts. Here, we show that the facile reaction of TBAX (TBA+ = tetra-n-butylammonium; X = F- and Cl-) with molybdenum paddlewheel-based coordination cages of the M4L4 and M24L24 lantern and cuboctahedra structure types, respectively, affords charged cages by virtue of coordination of halide anions to the internal and/or external metal sites on these structures, as confirmed by single-crystal X-ray diffraction, X-ray photoelectron spectroscopy, and nuclear magnetic resonance (NMR) spectroscopy. At a practical level, the TBAX/cage reactions, which are fully reversible upon isolation of the cage with the appropriate solvent, solubilize otherwise rigorously insoluble cages. This method significantly increases the solution processability of these highly porous solids. Toward the formation of new porous salts, halide binding also serves to incorporate charge on neutral cages and make them amenable to simple salt metathesis reactions to afford new porous salts based on anions and cations with intrinsic porosity. A combination of diffraction methods and a suite of spectroscopic tools confirms speciation of the isolated solids, which represent a new class of highly tunable porous salts. Ultimately, this work represents a roadmap for the preparation of new porous solids and showcases the utility and broad applicability of anion binding as a strategy for the synthesis of porous salts.
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2
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Guajardo Maturana R, Ortolan AO, Rodríguez-Kessler PL, Caramori GF, Parreira RLT, Muñoz-Castro A. Nature of hydride and halide encapsulation in Ag 8 cages: insights from the structure and interaction energy of [Ag 8(X){S 2P(O iPr) 2} 6] + (X = H -, F -, Cl -, Br -, I -) from relativistic DFT calculations. Phys Chem Chem Phys 2021; 24:452-458. [PMID: 34897316 DOI: 10.1039/d1cp04249a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unraveling the different contributing terms to an efficient anion encapsulation is a relevant issue for further understanding of the underlying factors governing the formation of endohedral species. Herein, we explore the favorable encapsulation of hydride and halide anions in the [Ag8(X){S2P(OPr)2}6]+ (X- = H, 1, F, 2, Cl, 3, Br, 4, and, I, 5) series on the basis of relativistic DFT-D level of theory. The resulting Ag8-X interaction is sizable, which decreases along the series: -232.2 (1) > -192.1 (2) > -165.5 (3) > -158.0 (4) > -144.2 kcal mol-1 (5), denoting a more favorable inclusion of hydride and fluoride anions within the silver cage. Such interaction is mainly stabilized by the high contribution from electrostatic type interactions (80.9 av%), with a lesser contribution from charge-transfer (17.4 av%) and London type interactions (1.7 av%). Moreover, the ionic character of the electrostatic contributions decreases from 90.7% for hydride to 68.6% for the iodide counterpart, in line with the decrease in hardness according to the Pearson's acid-base concept (HSAB) owing to the major role of higher electrostatic interaction terms related to the softer (Lewis) bases. Lastly, the [Ag8{S2P(OPr)2}6]2+ cluster is able to adapt its geometry in order to maximize the interaction towards respective monoatomic anion, exhibiting structural flexibility. Such insights shed light on the physical reasoning necessary for a better understanding of the different stabilizing and destabilizing contributions related to metal-based cavities towards favorable incorporation of different monoatomic anions.
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Affiliation(s)
- Raul Guajardo Maturana
- Universidad SEK, Facultad de Ciencias de la Salud, Instituto de Investigación Interdisciplinaren Ciencias Biomédicas SEK (I3CBSEK) Chile, Fernando Manterola 0789, Providencia, Santiago, Chile
| | - Alexandre O Ortolan
- Departamento de Química, Universidade Federal de Santa Catarina, Campus Universitário Trindade, CP 476, Florianópolis, SC, 88040-900, Brazil.
| | - Peter L Rodríguez-Kessler
- Laboratorio de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, Llano Subercaceaux 2801, San Miguel, Santiago, Chile.
| | - Giovanni F Caramori
- Departamento de Química, Universidade Federal de Santa Catarina, Campus Universitário Trindade, CP 476, Florianópolis, SC, 88040-900, Brazil.
| | - Renato L T Parreira
- Núcleo de Pesquisa em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, 14404-600, Brazil.
| | - Alvaro Muñoz-Castro
- Laboratorio de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, Llano Subercaceaux 2801, San Miguel, Santiago, Chile.
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3
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Thomas JA, Zubi A, Alnafisah HA, Turega S, Marques I, Gomes JRB, Félix V. Being positive is not everything - experimental and computational studies on the selectivity of a self-assembled, multiple redox-state, receptor that binds anions with up to picomolar affinities. Chemistry 2021; 28:e202102465. [PMID: 34755915 DOI: 10.1002/chem.202102465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Indexed: 11/06/2022]
Abstract
The interaction of the self-assembled trinuclear ruthenium bowl 1 3+ , that displays three other accessible oxidation states, with oxo-anions is investigated. Using a combination of NMR and electrochemical experimental data, estimates of the binding affinities of 1 4+ , 1 5+ , and 1 6+ for both halide and oxo-anions were derived. This analysis revealed that, across the range of oxidation states of the host, both high anion binding affinities (>10 9 M -1 for specific guests bound to 1 6+ ) and high selectivities (a range of >10 7 M -1 ) were observed. As the crystal structure of binding of the hexafluorophosphate anion revealed that the host has two potential binding sites (named the α and β pockets), the host-guest properties of both putative binding sites of the bowl, in all of its four oxidation states, were investigated through detailed quantum-based computational studies. These studies revealed that, due to the interplay of electrostatically assisted hydrogen-bonding and anion-π interactions, binding to the α pocket is generally preferred, except for the case of the relatively large and lipophilic hexafluorophosphate anionic guest and the host in the highest oxidation states, where the β pocket becomes relatively favourable. This analysis confirms that host-guest interactions involving structurally complex supramolecular architectures are driven by a combination of non-covalent interactions and, even in the case of charged binding pairs, electrostatics alone cannot accurately define these recognition processes.
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Affiliation(s)
- Jim Antony Thomas
- University of Sheffiled, Department of Chemistry, Brook Hill, S3 7HF, Sheffield, UNITED KINGDOM
| | - Ahmed Zubi
- The University of Sheffield, Chemistry, UNITED KINGDOM
| | | | - Simon Turega
- Sheffield Hallam University, Chemistry, UNITED KINGDOM
| | - Igor Marques
- University of Aveiro CICECO: Universidade de Aveiro CICECO, Chemistry, PORTUGAL
| | - José R B Gomes
- Centro de Investigação em Materiais Cerâmicos e Compósitos: Universidade de Aveiro CICECO, Chemistry, PORTUGAL
| | - Vítor Félix
- University of Aveiro CICECO: Universidade de Aveiro CICECO, Chemistry, PORTUGAL
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4
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Allison SJ, Bryk J, Clemett CJ, Faulkner RA, Ginger M, Griffiths HBS, Harmer J, Jane Owen-Lynch P, Pinder E, Wurdak H, Phillips RM, Rice CR. Self-assembly of an anion receptor with metal-dependent kinase inhibition and potent in vitro anti-cancer properties. Nat Commun 2021; 12:3898. [PMID: 34162854 PMCID: PMC8222254 DOI: 10.1038/s41467-021-23983-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 05/26/2021] [Indexed: 02/05/2023] Open
Abstract
One topical area of supramolecular chemistry is the binding of anionic species but despite the importance of anions in diverse cellular processes and for cancer development, anion receptors or 'binders' have received little attention as potential anti-cancer therapeutics. Here we report self-assembling trimetallic cryptands (e.g. [L2(Metal)3]6+ where Metal = Cu2+, Zn2+ or Mn2+) which can encapsulate a range of anions and which show metal-dependent differences in chemical and biological reactivities. In cell studies, both [L2Cu3]6+ and [L2Zn3]6+ complexes are highly toxic to a range of human cancer cell lines and they show significant metal-dependent selective activity towards cancer cells compared to healthy, non-cancerous cells (by up to 2000-fold). The addition of different anions to the complexes (e.g. PO43-, SO42- or PhOPO32-) further alters activity and selectivity allowing the activity to be modulated via a self-assembly process. The activity is attributed to the ability to either bind or hydrolyse phosphate esters and mechanistic studies show differential and selective inhibition of multiple kinases by both [L2Cu3]6+ and [L2Zn3]6+ complexes but via different mechanisms.
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Affiliation(s)
- Simon J. Allison
- grid.15751.370000 0001 0719 6059School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, UK
| | - Jaroslaw Bryk
- grid.15751.370000 0001 0719 6059School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, UK
| | - Christopher J. Clemett
- grid.15751.370000 0001 0719 6059School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, UK
| | - Robert A. Faulkner
- grid.15751.370000 0001 0719 6059School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, UK
| | - Michael Ginger
- grid.15751.370000 0001 0719 6059School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, UK
| | - Hollie B. S. Griffiths
- grid.15751.370000 0001 0719 6059School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, UK
| | - Jane Harmer
- grid.15751.370000 0001 0719 6059School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, UK
| | - P. Jane Owen-Lynch
- grid.15751.370000 0001 0719 6059School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, UK
| | - Emma Pinder
- grid.15751.370000 0001 0719 6059School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, UK
| | - Heiko Wurdak
- grid.9909.90000 0004 1936 8403School of Medicine, University of Leeds, Leeds, UK
| | - Roger M. Phillips
- grid.15751.370000 0001 0719 6059School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, UK
| | - Craig R. Rice
- grid.15751.370000 0001 0719 6059School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, UK
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5
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Mondal D, Balakrishna MS. Recent advances in organophosphorus-chalcogen and organophosphorus-pincer based macrocyclic compounds and their metal complexes. Dalton Trans 2021; 50:6382-6409. [PMID: 34002740 DOI: 10.1039/d1dt00593f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The design and development of phosphorus based macrocycles containing one or more other heteroatoms is of crucial importance for the enhancement of modern synthetic chemistry. In recent years focus on phosphorus based macromolecules has led to intriguing and innovative structures with a variety of applications, including photophysical and host-guest properties, and in organic synthesis. This article summarizes the recent advancements in the synthesis of macrocycles that consist of organophosphorus-chalcogen (P-E, P[double bond, length as m-dash]E; E = O, S, Se) and organophosphorus-pincer based macrocyclic ligands and their transition metal complexes with emphasis given to synthetic methodologies. The reactions involve the modification of simple macrocycles with phosphorus sources or phosphorus-based chalcogenating reagents. Transition metal complexes of phosphine-based macrocyclic pincer ligands and their reactivity are also included.
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Affiliation(s)
- Dipanjan Mondal
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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6
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Percástegui E, Ronson TK, Nitschke JR. Design and Applications of Water-Soluble Coordination Cages. Chem Rev 2020; 120:13480-13544. [PMID: 33238092 PMCID: PMC7760102 DOI: 10.1021/acs.chemrev.0c00672] [Citation(s) in RCA: 238] [Impact Index Per Article: 59.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Indexed: 12/23/2022]
Abstract
Compartmentalization of the aqueous space within a cell is necessary for life. In similar fashion to the nanometer-scale compartments in living systems, synthetic water-soluble coordination cages (WSCCs) can isolate guest molecules and host chemical transformations. Such cages thus show promise in biological, medical, environmental, and industrial domains. This review highlights examples of three-dimensional synthetic WSCCs, offering perspectives so as to enhance their design and applications. Strategies are presented that address key challenges for the preparation of coordination cages that are soluble and stable in water. The peculiarities of guest binding in aqueous media are examined, highlighting amplified binding in water, changing guest properties, and the recognition of specific molecular targets. The properties of WSCC hosts associated with biomedical applications, and their use as vessels to carry out chemical reactions in water, are also presented. These examples sketch a blueprint for the preparation of new metal-organic containers for use in aqueous solution, as well as guidelines for the engineering of new applications in water.
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Affiliation(s)
- Edmundo
G. Percástegui
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United
Kingdom
- Instituto
de Química, Ciudad UniversitariaUniversidad
Nacional Autónoma de México, Ciudad de México 04510, México
- Centro
Conjunto de Investigación en Química Sustentable, UAEM-UNAM, Carretera Toluca-Atlacomulco Km 14.5, Toluca, 50200 Estado de México, México
| | - Tanya K. Ronson
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United
Kingdom
| | - Jonathan R. Nitschke
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United
Kingdom
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7
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Andrews R, Begum S, Clemett CJ, Faulkner RA, Ginger ML, Harmer J, Molinari M, Parkes GMB, Qureshi ZMH, Rice CR, Ward MD, Williams HM, Wilson PB. Self-Assembled Anion-Binding Cryptand for the Selective Liquid-Liquid Extraction of Phosphate Anions. Angew Chem Int Ed Engl 2020; 59:20480-20484. [PMID: 32743891 PMCID: PMC7693201 DOI: 10.1002/anie.202009960] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Indexed: 11/19/2022]
Abstract
The ligands L1 and L2 form trinuclear self-assembled complexes with Cu2+ (i.e. [(L1 )2 Cu3 ]6+ or [(L2 )2 Cu3 ]6+ ) both of which act as a host to a variety of anions. Inclusion of long aliphatic chains on these ligands allows the assemblies to extract anions from aqueous media into organic solvents. Phosphate can be removed from water efficiently and highly selectively, even in the presence of other anions.
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Affiliation(s)
- Rebecca Andrews
- Department of Chemical SciencesUniversity of HuddersfieldHuddersfieldHD1 3DHUK
| | - Sabera Begum
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
| | | | - Robert A. Faulkner
- Department of Chemical SciencesUniversity of HuddersfieldHuddersfieldHD1 3DHUK
| | - Michael L. Ginger
- Department of Chemical SciencesUniversity of HuddersfieldHuddersfieldHD1 3DHUK
| | - Jane Harmer
- Department of Chemical SciencesUniversity of HuddersfieldHuddersfieldHD1 3DHUK
| | - Marco Molinari
- Department of Chemical SciencesUniversity of HuddersfieldHuddersfieldHD1 3DHUK
| | - Gareth M. B. Parkes
- Department of Chemical SciencesUniversity of HuddersfieldHuddersfieldHD1 3DHUK
| | | | - Craig R. Rice
- Department of Chemical SciencesUniversity of HuddersfieldHuddersfieldHD1 3DHUK
| | - Michael D. Ward
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
| | - Howard M. Williams
- Department of Chemical SciencesUniversity of HuddersfieldHuddersfieldHD1 3DHUK
| | - Philippe B. Wilson
- School of AnimalRural and Environmental SciencesNottingham Trent UniversityNottinghamNG25 0QFUK
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8
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Andrews R, Begum S, Clemett CJ, Faulkner RA, Ginger ML, Harmer J, Molinari M, Parkes GMB, Qureshi ZMH, Rice CR, Ward MD, Williams HM, Wilson PB. Self‐Assembled Anion‐Binding Cryptand for the Selective Liquid–Liquid Extraction of Phosphate Anions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009960] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Rebecca Andrews
- Department of Chemical Sciences University of Huddersfield Huddersfield HD1 3DH UK
| | - Sabera Begum
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
| | | | - Robert A. Faulkner
- Department of Chemical Sciences University of Huddersfield Huddersfield HD1 3DH UK
| | - Michael L. Ginger
- Department of Chemical Sciences University of Huddersfield Huddersfield HD1 3DH UK
| | - Jane Harmer
- Department of Chemical Sciences University of Huddersfield Huddersfield HD1 3DH UK
| | - Marco Molinari
- Department of Chemical Sciences University of Huddersfield Huddersfield HD1 3DH UK
| | - Gareth M. B. Parkes
- Department of Chemical Sciences University of Huddersfield Huddersfield HD1 3DH UK
| | | | - Craig R. Rice
- Department of Chemical Sciences University of Huddersfield Huddersfield HD1 3DH UK
| | - Michael D. Ward
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
| | - Howard M. Williams
- Department of Chemical Sciences University of Huddersfield Huddersfield HD1 3DH UK
| | - Philippe B. Wilson
- School of Animal Rural and Environmental Sciences Nottingham Trent University Nottingham NG25 0QF UK
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9
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Dey SK, Archana, Pereira S, Harmalkar SS, Mhaldar SN, Gobre VV, Janiak C. Selective encapsulation and extraction of hydrogenphosphate by a hydrogen bond donor tripodal receptor. CrystEngComm 2020. [DOI: 10.1039/d0ce00834f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Intramolecular N–H⋯OC hydrogen bonding between the inner amide groups dictates the receptor–anion complementarity in a tripodal receptor towards selective encapsulation of hydrogenphosphate in the outer urea cavity by multiple hydrogen bonds.
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Affiliation(s)
| | - Archana
- School of Chemical Sciences
- Goa University
- Taleigao Plateau
- India
| | - Sybil Pereira
- School of Chemical Sciences
- Goa University
- Taleigao Plateau
- India
| | | | | | | | - Christoph Janiak
- Institute for Inorganic and Structural Chemistry
- Heinrich-Heine University Dusseldorf
- 40225 Dusseldorf
- Germany
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11
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Ghosh TK, Dutta R, Maji S, Pal S, Ghosh P. Removal of phosphate in presence of interfering sulphate and arsenate by a tripodal thiourea receptor by precipitation through crystallization in semi-aqueous medium. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.03.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Shao Z, Huang C, Wu Q, Zhao Y, Xu W, Liu Y, Dang J, Hou H. Ion exchange collaborating coordination substitution: More efficient Cr(VI) removal performance of a water-stable Cu II-MOF material. JOURNAL OF HAZARDOUS MATERIALS 2019; 378:120719. [PMID: 31202075 DOI: 10.1016/j.jhazmat.2019.05.112] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 05/13/2019] [Accepted: 05/30/2019] [Indexed: 06/09/2023]
Abstract
An unusual water-stable cationic metal-organic framework {[Cu(L)0.5(bpe)(H2O)](NO3)•(H2O)0.5}n (1) (H4L = bis(3,5-dicarboxypyridinium)-p-xylylene) was synthesized, which was developed into an effective capture material for removal chromate from water. The results show that this material efficiently traps HCrO4- pollutant ions via single-crystal to single-crystal (SCSC) coordination substitution process. The HCrO4- uptake capacity of 1 is high to 190 mg/g. Meaningfully, the structure of 1-HCrO4 ({[Cu(L)0.5(bpe)(HCrO4)]}n) can be accurately obtained by single-crystal X-ray diffraction, where the chromate enter the framework to form stable coordination with central metal ions Cu2+. This is the first example of a stable coordination between chromate and the framework during the capture process. The captured HCrO4- are not dissociated easily into the solution due to the coordination bond. This interaction makes the enrichment of HCrO4- more stable and the capture capacity excellent. Furthermore, the HCrO4- releasing process displays good regeneration in a single crystal state, which further elaborates the reversible SCSC transformation. The mechanism of Cr(VI) removal was also confirmed by DFT calculation studies. This work provides a new way to design and develop efficient MOF capture materials.
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Affiliation(s)
- Zhichao Shao
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China
| | - Chao Huang
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China; Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, Henan, PR China
| | - Qiong Wu
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China
| | - Yujie Zhao
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China
| | - Wenjuan Xu
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China
| | - Yeye Liu
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China
| | - Jian Dang
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China
| | - Hongwei Hou
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China.
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13
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Chahal MK, Labuta J, Březina V, Karr PA, Matsushita Y, Webre WA, Payne DT, Ariga K, D'Souza F, Hill JP. Knock-on synthesis of tritopic calix[4]pyrrole host for enhanced anion interactions. Dalton Trans 2019; 48:15583-15596. [PMID: 31353382 DOI: 10.1039/c9dt02365h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Interactions of anionic guests with a tritopic peripherally functionalized conjugated calix[4]pyrrole host (1) prepared using a regioselective synthetic method is reported. The regioselectivity of synthesis relies on selective N-alkylation of the calix[4]pyrrole caused by peripheral substitution of one pyrrole group with subsequent N-alkylation at the opposing pyrrole group termed by us 'knock-on' regioselectivity. The resulting host molecule exhibits anion interactions with common chloride and nitrate anions enhanced by an order of magnitude over the parent conjugated calix[4]pyrrole. Combined analysis of 1H NMR and UV-vis spectroscopic titration data enabled an evaluation of binding strengths of anions with the host KA in a binding model where the salt dissociation process is also incorporated in the form of its dissociation constant Kd. Anions could be classified as two types based on their interactions with 1: Type A anions (chloride, nitrate, perchlorate, hydrogensulphate) associate as 1 : 1 complexes through hydrogen bonding while interactions involving Type B anions (acetate, fluoride, dihydrogenphosphate) are complicated by host deprotonation and/or countercation association. Hosts based on rim-functionalized calix[4]pyrroles such as 1 represent a promising new family of chromophores for estimation of biologically relevant anions or other species.
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Affiliation(s)
- Mandeep K Chahal
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
| | - Jan Labuta
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
| | - Václav Březina
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Paul A Karr
- Department of Physical Sciences and Mathematics, Wayne State College, 111 Main Street, Wayne, Nebraska 68787, USA
| | - Yoshitaka Matsushita
- Research Network and Facility Services Division, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Whitney A Webre
- Department of Chemistry, University of North Texas, 1155 Union Circle, 305070 Denton, Texas 76203, USA
| | - Daniel T Payne
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
| | - Katsuhiko Ariga
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan. and Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Francis D'Souza
- Department of Chemistry, University of North Texas, 1155 Union Circle, 305070 Denton, Texas 76203, USA
| | - Jonathan P Hill
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
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14
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Chou CC, Lai YT, Yang CC, Kuo TS. Rapid access to sulfate-encapsulated symmetrical and asymmetrical capsules based on silver–pyrazole complex cations. NEW J CHEM 2019. [DOI: 10.1039/c9nj02105a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new class of sulfate-encapsulated symmetrical and asymmetrical capsules is developed through ion-pair complexation.
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Affiliation(s)
- Chang-Chuan Chou
- Center for General Education
- Chang Gung University of Science and Technology
- Republic of China
| | - Yu-Ting Lai
- Center for General Education
- Chang Gung University of Science and Technology
- Republic of China
| | - Chia-Chi Yang
- Center for General Education
- Chang Gung University of Science and Technology
- Republic of China
| | - Ting-Sen Kuo
- Department of Chemistry
- National Taiwan Normal University
- Taipei 116
- Republic of China
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15
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Clemett CJ, Faulkner RA, Rice CR, Slater C, Wedge CJ, Whitehead M. A ligand strand that displays anion-dependant reactivity with acetonitrile; formation of either a mononuclear complex or head-to-tail circular helicate. Dalton Trans 2019; 48:8427-8432. [DOI: 10.1039/c9dt01063g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ligand L2,2 contains two bidentate domains separated by a 3,3-diamino-2,2′-biphenyl spacer unit and with Cu(ClO4)2 a mononuclear species is formed (e.g. [Cu(L2,2)]2+).
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Affiliation(s)
| | - Robert A. Faulkner
- Department of Chemical and Biological Sciences
- University of Huddersfield
- Huddersfield
- UK
| | - Craig R. Rice
- Department of Chemical and Biological Sciences
- University of Huddersfield
- Huddersfield
- UK
| | - Christopher Slater
- Department of Chemical and Biological Sciences
- University of Huddersfield
- Huddersfield
- UK
| | - Christopher J. Wedge
- Department of Chemical and Biological Sciences
- University of Huddersfield
- Huddersfield
- UK
| | - Martina Whitehead
- Department of Chemical and Biological Sciences
- University of Huddersfield
- Huddersfield
- UK
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16
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Lan L, Liu Y, Chen X, Zhang T, Dong N, Miao P. Preparation of a novel iron cryptate as an electrochemical probe for biosensing. Electrochem commun 2019. [DOI: 10.1016/j.elecom.2018.11.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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