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Ninawe P, Jain A, Sangole M, Anas M, Ugale A, Malik VK, Yusuf SM, Singh K, Ballav N. Robust Spin Liquidity in 2D Metal-Organic Framework Cu 3 (HHTP) 2 with S= 1 / 2 Kagome Lattice. Chemistry 2024; 30:e202303718. [PMID: 37955413 DOI: 10.1002/chem.202303718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 11/13/2023] [Accepted: 11/13/2023] [Indexed: 11/14/2023]
Abstract
On one hand electron or hole doping of quantum spin liquid (QSL) may unlock high-temperature superconductivity and on the other hand it can disrupt the spin liquidity, giving rise to a magnetically ordered ground state. Recently, a 2D MOF, Cu3 (HHTP)2 (HHTP - 2,3,6,7,10,11-hexahydroxytriphenylene), containing Cu(II) S=1 / 2 ${{ 1/2 }}$ frustrated spins in the Kagome lattice is emerging as a promising QSL candidate. Herein, we present an elegant in situ redox-chemistry strategy of anchoring Cu3 (HHTP)2 crystallites onto diamagnetic reduced graphene oxide (rGO) sheets, resulting in the formation of electron-doped Cu3 (HHTP)2 -rGO composite which exhibited a characteristic semiconducting behavior (5 K to 300 K) with high electrical conductivity of 70 S ⋅ m-1 and a carrier density of ~1.1×1018 cm-3 at 300 K. Remarkably, no magnetic transition in the Cu3 (HHTP)2 -rGO composite was observed down to 1.5 K endorsing the robust spin liquidity of the 2D MOF Cu3 (HHTP)2 . Specific heat capacity measurements led to the estimation of the residual entropy values of 28 % and 34 % of the theoretically expected value for the pristine Cu3 (HHTP)2 and Cu3 (HHTP)2 -rGO composite, establishing the presence of strong quantum fluctuations down to 1.5 K (two times smaller than the value of the exchange interaction J).
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Affiliation(s)
- Pranay Ninawe
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, 411008, India
| | - Anil Jain
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
- Homi Bhabha National Institute Anushakti Nagar, Mumbai, 400091, India
| | - Mayur Sangole
- Physical and Materials Chemistry Division, National Chemical Laboratory, Pune, 411008, India
| | - Mohd Anas
- Department of Physics, Indian Institute of Technology, Roorkee, 247667, India
| | - Ajay Ugale
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, 411008, India
| | - Vivek K Malik
- Department of Physics, Indian Institute of Technology, Roorkee, 247667, India
| | - Seikh M Yusuf
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
- Homi Bhabha National Institute Anushakti Nagar, Mumbai, 400091, India
| | - Kirandeep Singh
- Physical and Materials Chemistry Division, National Chemical Laboratory, Pune, 411008, India
| | - Nirmalya Ballav
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, 411008, India
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Interplay of electronic and geometric structure on Cu phenanthroline, bipyridine and derivative complexes, synthesis, characterization, and reactivity towards oxygen. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3
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Sindhu P, Ananthram KS, Jain A, Tarafder K, Ballav N. Charge-transfer interface of insulating metal-organic frameworks with metallic conduction. Nat Commun 2022; 13:7665. [PMID: 36509780 PMCID: PMC9744856 DOI: 10.1038/s41467-022-35429-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 12/01/2022] [Indexed: 12/14/2022] Open
Abstract
Downsizing materials into hetero-structured thin film configurations is an important avenue to capture various interfacial phenomena. Metallic conduction at the interfaces of insulating transition metal oxides and organic molecules are notable examples, though, it remained elusive in the domain of coordination polymers including metal-organic frameworks (MOFs). MOFs are comprised of metal centers connected to organic linkers with an extended coordination geometry and potential void space. Poor orbitals overlap often makes these crystalline solids electrical insulators. Herein, we have fabricated hetero-structured thin film of a Mott and a band insulating MOFs via layer-by-layer method. Electrical transport measurements across the thin film evidenced an interfacial metallic conduction. The origin of such an unusual observation was understood by the first-principles density functional theory calculations; specifically, Bader charge analysis revealed significant accumulation and percolation of charge across the interface. We anticipate similar interfacial effects in other rationally designed hetero-structured thin films of MOFs.
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Affiliation(s)
- Pooja Sindhu
- grid.417959.70000 0004 1764 2413Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune, 411 008 India
| | - K. S. Ananthram
- grid.444525.60000 0000 9398 3798Department of Physics, National Institute of Technology Karnataka, Surathkal, Mangalore, 575 025 India
| | - Anil Jain
- grid.418304.a0000 0001 0674 4228Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085 India ,grid.450257.10000 0004 1775 9822Homi Bhabha National Institute, Anushakti Nagar, Mumbai, 400094 India
| | - Kartick Tarafder
- grid.444525.60000 0000 9398 3798Department of Physics, National Institute of Technology Karnataka, Surathkal, Mangalore, 575 025 India
| | - Nirmalya Ballav
- grid.417959.70000 0004 1764 2413Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune, 411 008 India
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Ozden S, Delafontaine L, Asset T, Guo S, Filsinger KA, Priestley RD, Atanassov P, Arnold CB. Graphene-based catalyst for CO2 reduction: The critical role of solvents in materials design. J Catal 2021. [DOI: 10.1016/j.jcat.2021.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Lathika AS, Rana S, Prasoon A, Sindhu P, Roy D, Ballav N. Direct Layer-by-Layer Growth of Crystalline Ag-TCNQ Thin Films on Functionalized Au Substrate: How Critical Is the pH of Ag(I) Solution? J Phys Chem Lett 2020; 11:10548-10551. [PMID: 33295776 DOI: 10.1021/acs.jpclett.0c03229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Wet-chemical fabrication of a crystalline Ag-TCNQ (TCNQ = 7,7,8,8-tetracyanoquinodimethane) thin film on non-Ag substrate is challenging whereby the chemistry was powered by photon energy and/or electrical energy. We report for the first time, direct chemical growth of a Ag-TCNQ thin film on a functionalized Au substrate by employing the layer-by-layer (LbL) approach at ambient reaction conditions. Various Ag(I) salt precursors previously realized to be unsuitable for the fabrication of Ag-TCNQ thin films on non-Ag substrates ultimately gave rise to dense and uniform thin films of Ag-TCNQ. The crucial knob regulating the direct formation of the thin films of Ag-TCNQ was identified to be the pH of the respective Ag(I) solutions.
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Affiliation(s)
- Aswani Sathish Lathika
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pune 411 008, India
| | - Shammi Rana
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pune 411 008, India
| | - Anupam Prasoon
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pune 411 008, India
| | - Pooja Sindhu
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pune 411 008, India
| | - Debashree Roy
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pune 411 008, India
| | - Nirmalya Ballav
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pune 411 008, India
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6
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Fu W, Deng Y, Ram R, Etschmann B, Owen ND, Brugger J, Vaughan J. Selective removal of radioactive 210Pb(II) and nonradioactive Pb(II) isotopes from Cu(II)-rich acidic chloride solution by a new polyamine anion exchanger. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117359] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Sarmadi M, Bidel Z, Najafi F, Ramakrishnan R, Teymoori F, Zarmehri HA, Nazarzadeh M. Copper concentration in multiple sclerosis: a systematic review and meta-analysis. Mult Scler Relat Disord 2020; 45:102426. [PMID: 32799121 DOI: 10.1016/j.msard.2020.102426] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 07/26/2020] [Accepted: 07/27/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND A wide range of risk factors, from genetic to environmental, have been identified to play role in the etiology of multiple sclerosis. However, the role of trace element remains mostly unknown. We sought to combine all available evidence to assess the association between copper concentration and multiple sclerosis. METHODS This systematic review and meta-analysis was conducted based on PRISMA guidelines. PubMed, Scopus, Embase, and Web of Science were searched since inception till July 2020. Observational studies that assessed copper as exposure in serum, plasma, whole blood, and cerebrospinal fluid were included. Standardized mean differences (SMD), comparing the mean of copper concentration in multiple sclerosis patients versus healthy controls, were considered as the measure of association. The fixed-effect model with inverse variance weighting was used to combine the findings. RESULTS Twenty studies inclusive of 797 multiple sclerosis cases and 875 healthy controls were included in the meta-analysis (all case-control studies). The combined SMDs were 1.25 (95% confidence interval [CI] 0.95 to 1.55, number of included studies [n]=4) in plasma, 0.45 (CI 0.22 to 0.68, n=4) in whole blood, 0.19 (CI 0.06 to 0.33, n=12) in blood serum and 1.23 (CI 0.83 to 1.64, n=4) in cerebrospinal fluid. CONCLUSIONS We found a higher concentration of copper in multiple sclerosis patients than healthy controls. The possible causal nature of the observed associations warrants further investigation with prospective data.
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Affiliation(s)
- Mohammad Sarmadi
- Department of Environmental Health Engineering, School of Health, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran; Neuroscience Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran; Health Sciences Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
| | - Zeinab Bidel
- Deep Medicine, Oxford Martin School, University of Oxford, UK; Nuffield Department of Women's and Reproductive Health, Medical Science Division, University of Oxford, UK
| | - Fereshteh Najafi
- Neuroscience Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran; Department of Public Health, School of Health, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
| | - Rema Ramakrishnan
- Deep Medicine, Oxford Martin School, University of Oxford, UK; Nuffield Department of Women's and Reproductive Health, Medical Science Division, University of Oxford, UK
| | - Farshad Teymoori
- Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Hassan Azhdari Zarmehri
- Neuroscience Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran; Department of Physiology, School of Paramedical Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
| | - Milad Nazarzadeh
- Deep Medicine, Oxford Martin School, University of Oxford, UK; Nuffield Department of Women's and Reproductive Health, Medical Science Division, University of Oxford, UK; Department of Public Health, School of Health, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran.
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8
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Sindhu P, Prasoon A, Rana S, Ballav N. Emergent Interface in Heterostructured Thin Films of Cu(II) and Cu(I) Coordination Polymers. J Phys Chem Lett 2020; 11:6242-6248. [PMID: 32659093 DOI: 10.1021/acs.jpclett.0c01735] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work we report fabrication of high-quality AB- and BA-type heterostructured thin films of cubic Cu(II) (A-type) and tetragonal Cu(I) (B-type) coordination polymers (CPs) on the functionalized Au substrate by the layer-by-layer method. Successful growth of Cu(I)-CP on top of Cu(II)-CP was assigned to be due to the interfacial reduction reaction (IRR). Notably, electrical transport measurements across AB- and BA-type heterostructured thin films revealed rectification of current in opposite directions. We have attributed such an interestingly new observation to the formation of a well-defined interface of Cu(II)-CP and Cu(I)-CP resembling a p-n junction-a hitherto unreported phenomenon that is anticipated to open enormous opportunities for the heterostructured thin films of CPs, likewise celebrated interfaces of oxide heterostructures.
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Affiliation(s)
- Pooja Sindhu
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pune 411 008, India
| | - Anupam Prasoon
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pune 411 008, India
| | - Shammi Rana
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pune 411 008, India
| | - Nirmalya Ballav
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pune 411 008, India
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Liang G, Mo F, Yang Q, Huang Z, Li X, Wang D, Liu Z, Li H, Zhang Q, Zhi C. Commencing an Acidic Battery Based on a Copper Anode with Ultrafast Proton-Regulated Kinetics and Superior Dendrite-Free Property. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1905873. [PMID: 31709660 DOI: 10.1002/adma.201905873] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 10/22/2019] [Indexed: 06/10/2023]
Abstract
Building aqueous acidic batteries is in its infancy. There are several sporadic attempts that show desirable electrochemical performance, especially rate stability and high power density. The direct use of a metal anode is regarded as the best protocol for fabricating metal-based batteries. However, introducing an acid-tolerant and electrochemically reversible metal anode into an acidic aqueous battery system remains a considerable challenge. In this work, copper (Cu) metal is used as a reversible metal anode to match acidic regimes with a nearly 100% deposition-dissolution efficiency. The reaction kinetics and mechanism of the Cu anode can be regulated by protons with 400% kinetic acceleration compared with a mild electrolyte. In addition, the anode exhibits a dendrite-free morphology after cycling due to the surface roughening effect, which is different from the morphologies of widely used Zn- and Li-metal anodes. When coupled with the Prussian blue analog as cathodes, the battery delivers ultrafast kinetics of 1830 W kg-1 at 75 C, which is comparable to the power performance of supercapacitors. Long-term cyclic stability is evaluated, where the capacity retention is 85.6% after 5000 cycles. Finally, flexible fiber-shaped acidic Cu-based batteries are demonstrated for potential wearable applications.
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Affiliation(s)
- Guojin Liang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, China
| | - Funian Mo
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, China
| | - Qi Yang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, China
| | - Zhaodong Huang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, China
| | - Xinliang Li
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, China
| | - Donghong Wang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, China
| | - Zhouxin Liu
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, China
| | - Hongfei Li
- Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China
| | - Qiang Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China
| | - Chunyi Zhi
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, China
- Shenzhen Research Institute, City University of Hong Kong, High-Tech Zone, Nanshan, Shenzhen, 518057, China
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10
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Prasoon A, Dhara B, Roy D, Rana S, Bhand S, Ballav N. Achieving current rectification ratios ≥ 10 5 across thin films of coordination polymer. Chem Sci 2019; 10:10040-10047. [PMID: 32015817 PMCID: PMC6977544 DOI: 10.1039/c9sc03733k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 09/05/2019] [Indexed: 01/01/2023] Open
Abstract
A record value of the current rectification ratio (RR ≥ 105) across molecularly doped thin films of a Cu(ii)-coordination polymer is achieved.
Downsizing coordination polymers (CPs) to thin film configurations is a prerequisite for device applications. However, fabrication of thin films of CPs including metal–organic frameworks (MOFs) with reasonable electrical conductivity is challenging. Herein, thin film fabrication of a Cu(ii)-CP employing a layer-by-layer method is demonstrated whereby a self-assembled monolayer on Au was used as the functionalized substrate. Growth of the Cu(ii)-CP at the solid–liquid interface generated open-metal Cu(ii) sites in the thin film which were susceptible to activation by molecular dopant molecules. A significant enhancement in in-plane electrical conductivity and an unheralded cross-plane current rectification ratio (exceeding 105 both at room-temperature and at an elevated temperature) were achieved. Such a remarkable rectification ratio was realized, similar to those of commercial Si rectifier diodes. This phenomenon is attributed to the formation of an electronic heterostructure in the molecularly doped thin film. Molecular doping additionally transformed the interfacial properties of thin films from hydrophilic to highly hydrophobic.
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Affiliation(s)
- Anupam Prasoon
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Dr Homi Bhabha Road, Pashan , Pune 411008 , India .
| | - Barun Dhara
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Dr Homi Bhabha Road, Pashan , Pune 411008 , India .
| | - Debashree Roy
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Dr Homi Bhabha Road, Pashan , Pune 411008 , India .
| | - Shammi Rana
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Dr Homi Bhabha Road, Pashan , Pune 411008 , India .
| | - Sujit Bhand
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Dr Homi Bhabha Road, Pashan , Pune 411008 , India .
| | - Nirmalya Ballav
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Dr Homi Bhabha Road, Pashan , Pune 411008 , India .
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Smits NWG, den Boer D, Wu L, Hofmann JP, Hetterscheid DGH. Elucidation of the Structure of a Thiol Functionalized Cu-tmpa Complex Anchored to Gold via a Self-Assembled Monolayer. Inorg Chem 2019; 58:13007-13019. [PMID: 31549820 PMCID: PMC6784813 DOI: 10.1021/acs.inorgchem.9b01921] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
![]()
The structure of the copper complex
of the 6-((1-butanethiol)oxy)-tris(2-pyridylmethyl)amine ligand (Cu-tmpa-O(CH2)4SH) anchored to a gold surface has been investigated.
To enable covalent attachment of the complex to the gold surface,
a heteromolecular self-assembled monolayer (SAM) of butanethiol and
a thiol-substituted tmpa ligand was used. Subsequent formation of
the immobilized copper complex by cyclic voltammetry in the presence
of Cu(OTf)2 resulted in the formation of the anchored Cu-tmpa-O(CH2)4SH system which, according to scanning electron
microscopy and X-ray diffraction, did not contain any accumulated
copper nanoparticles or crystalline copper material. Electrochemical
investigation of the heterogenized system barely showed any redox
activity and lacked the typical CuII/I redox couple in
contrast to the homogeneous complex in solution. The difference between
the heterogenized system and the homogeneous complex was confirmed
by X-ray photoelectron spectroscopy; the XPS spectrum did not show
any satellite features of a CuII species but instead showed
the presence of a CuI ion in a ∼2:3 ratio to nitrogen
and a ∼2:7 ratio to sulfur. The +I oxidation state of the copper
species was confirmed by the edge position in the X-ray absorption
near-edge structure (XANES) region of the X-ray absorption spectrum.
These results show that upon immobilization of Cu-tmpa-O(CH2)4SH, the resulting structure is not identical to the
homogeneous CuII-tmpa complex. Upon anchoring, a novel
CuI species is formed instead. This illustrates the importance
of a thorough characterization of heterogenized molecular systems
before drawing any conclusions regarding the structure–function
relationships. Both the oxidation state and the structure of the CuII complex of tris(2-pyridylmethyl)amine (Cu-tmpa) change upon
anchoring it to a gold surface via a self-assembled monolayer. It
was shown by XPS and XANES that a CuI species is formed
upon anchoring instead in which each tmpa ligand contains roughly
two to three copper ions.
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Affiliation(s)
- Nicole W G Smits
- Leiden Institute of Chemistry , Leiden University , P.O. Box 9502, 2300 RA Leiden , The Netherlands
| | - Daan den Boer
- Leiden Institute of Chemistry , Leiden University , P.O. Box 9502, 2300 RA Leiden , The Netherlands
| | - Longfei Wu
- Laboratory for Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry , Eindhoven University of Technology , P.O. Box 513 , 5600 MB Eindhoven , The Netherlands
| | - Jan P Hofmann
- Laboratory for Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry , Eindhoven University of Technology , P.O. Box 513 , 5600 MB Eindhoven , The Netherlands
| | - Dennis G H Hetterscheid
- Leiden Institute of Chemistry , Leiden University , P.O. Box 9502, 2300 RA Leiden , The Netherlands
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Mezzaroba L, Alfieri DF, Colado Simão AN, Vissoci Reiche EM. The role of zinc, copper, manganese and iron in neurodegenerative diseases. Neurotoxicology 2019; 74:230-241. [PMID: 31377220 DOI: 10.1016/j.neuro.2019.07.007] [Citation(s) in RCA: 242] [Impact Index Per Article: 48.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 07/26/2019] [Accepted: 07/26/2019] [Indexed: 01/16/2023]
Abstract
Metals are involved in different pathophysiological mechanisms associated with neurodegenerative diseases (NDDs), including Alzheimer's disease (AD), Parkinson's disease (PD) and multiple sclerosis (MS). The aim of this study was to review the effects of the essential metals zinc (Zn), copper (Cu), manganese (Mn) and iron (Fe) on the central nervous system (CNS), as well as the mechanisms involved in their neurotoxicity. Low levels of Zn as well as high levels of Cu, Mn, and Fe participate in the activation of signaling pathways of the inflammatory, oxidative and nitrosative stress (IO&NS) response, including nuclear factor kappa B and activator protein-1. The imbalance of these metals impairs the structural, regulatory, and catalytic functions of different enzymes, proteins, receptors, and transporters. Neurodegeneration occurs via association of metals with proteins and subsequent induction of aggregate formation creating a vicious cycle by disrupting mitochondrial function, which depletes adenosine triphosphate and induces IO&NS, cell death by apoptotic and/or necrotic mechanisms. In AD, at low levels, Zn suppresses β-amyloid-induced neurotoxicity by selectively precipitating aggregation intermediates; however, at high levels, the binding of Zn to β-amyloid may enhance formation of fibrillar β-amyloid aggregation, leading to neurodegeneration. High levels of Cu, Mn and Fe participate in the formation α-synuclein aggregates in intracellular inclusions, called Lewy Body, that result in synaptic dysfunction and interruption of axonal transport. In PD, there is focal accumulation of Fe in the substantia nigra, while in AD a diffuse accumulation of Fe occurs in various regions, such as cortex and hippocampus, with Fe marginally increased in the senile plaques. Zn deficiency induces an imbalance between T helper (Th)1 and Th2 cell functions and a failure of Th17 down-regulation, contributing to the pathogenesis of MS. In MS, elevated levels of Fe occur in certain brain regions, such as thalamus and striatum, which may be due to inflammatory processes disrupting the blood-brain barrier and attracting Fe-rich macrophages. Delineating the specific mechanisms by which metals alter redox homeostasis is essential to understand the pathophysiology of AD, PD, and MS and may provide possible new targets for their prevention and treatment of the patients affected by these NDDs.
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Affiliation(s)
- Leda Mezzaroba
- Laboratory of Applied Immunology, Health Sciences Center, State University of Londrina, Londrina, Paraná, Zip Code 86.038-440 Brazil; Department of Pathology, Clinical Analysis and Toxicology, Health Sciences Center, State University of Londrina, Londrina, Paraná, Zip Code 86.038-440 Brazil
| | - Daniela Frizon Alfieri
- Laboratory of Applied Immunology, Health Sciences Center, State University of Londrina, Londrina, Paraná, Zip Code 86.038-440 Brazil
| | - Andrea Name Colado Simão
- Laboratory of Applied Immunology, Health Sciences Center, State University of Londrina, Londrina, Paraná, Zip Code 86.038-440 Brazil; Department of Pathology, Clinical Analysis and Toxicology, Health Sciences Center, State University of Londrina, Londrina, Paraná, Zip Code 86.038-440 Brazil
| | - Edna Maria Vissoci Reiche
- Laboratory of Applied Immunology, Health Sciences Center, State University of Londrina, Londrina, Paraná, Zip Code 86.038-440 Brazil; Department of Pathology, Clinical Analysis and Toxicology, Health Sciences Center, State University of Londrina, Londrina, Paraná, Zip Code 86.038-440 Brazil.
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13
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Rana S, Sindhu P, Ballav N. Perspective on the Interfacial Reduction Reaction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:9647-9659. [PMID: 31282684 DOI: 10.1021/acs.langmuir.9b01250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Chemical reactions involving oxidation and reduction processes at interfaces may vary from those in conventional liquid-phase or solid-phase reactions and could influence the overall outcome. This article primarily features a study on metal-ligand coordination at the solid-liquid interface. Of particular mention is the spontaneous reduction of Cu(II) to Cu(I) at a solid-liquid interface without the need of any extraneous reducing agent, unlike in the liquid-phase reaction whereby no reduction of Cu(II) to Cu(I) took place. As a consequence of the interfacial reduction reaction (IRR), thin films of Cu-TCNQ (tetracyanoquinodimethane) and Cu-HCF (hexacyanoferrate) were successfully deposited onto a thiol-functionalized Au substrate via a layer-by-layer (LbL) method. IRR is anticipated to be useful in generating new functional and stimuli-responsive materials, which are otherwise difficult to achieve via conventional liquid-phase reactions.
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Affiliation(s)
- Shammi Rana
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Dr. Homi Bhabha Road , Pune 411 008 , India
| | - Pooja Sindhu
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Dr. Homi Bhabha Road , Pune 411 008 , India
| | - Nirmalya Ballav
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Dr. Homi Bhabha Road , Pune 411 008 , India
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Gupta K, Jha PK, Dadwal A, Debnath AK, Jaiswal I, Rana S, Joy PA, Ballav N. Embedding S = 1/2 Kagome-like Lattice in Reduced Graphene Oxide. J Phys Chem Lett 2019; 10:2663-2668. [PMID: 31050902 DOI: 10.1021/acs.jpclett.9b00839] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
An elegant platform to explore frustrated magnetism is the kagome spin lattice. In this work, clinoatacamite, a naturally occurring S = 1/2 kagome-like antiferromagnetic insulator, is synthesized in water at ambient pressure for the first time from a cuprous chloride (CuCl) precursor whereby Cu(I) was spontaneously oxidized to Cu(II) in the form of clinoatacamite [Cu2(OH)3Cl] with a simultaneous reduction of graphene oxide (GO) to reduced graphene oxide (rGO) in one pot. A stable nanocomposite of phase-pure clinoatacamite nanocrystals embedded in the rGO matrix was isolated. The clinoatacamite-rGO nanocomposite was determined to be magnetically active with a markedly enhanced coercive field of ∼2500 Oe at 5 K as well as electronically active with a conductivity value of ∼200 S·m-1 at 300 K. Our results illustrate an avenue of combining exotic magnetic and electronic lattices without impeding their individual characteristics and synergistically generating a new class of magnetic semiconductors.
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Affiliation(s)
- Kriti Gupta
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Pune 411008 , India
| | - Plawan Kumar Jha
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Pune 411008 , India
| | - Arun Dadwal
- Physical and Materials Chemistry Division , National Chemical Laboratory (NCL) , Pune 411008 , India
| | - Anil K Debnath
- Thin Film Devices Section, Technical Physics Division , Bhabha Atomic Research Centre (BARC) , Mumbai 400085 , India
| | - Ishan Jaiswal
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Pune 411008 , India
| | - Shammi Rana
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Pune 411008 , India
| | - Pattayil A Joy
- Physical and Materials Chemistry Division , National Chemical Laboratory (NCL) , Pune 411008 , India
| | - Nirmalya Ballav
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) , Pune 411008 , India
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