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1. Copper Levels in Patients with Unexplained Dysplastic Cytopenia

Author:
Butcher, Dominic; Deplano, Simona; Lofaro, Thomas
Source:
Biological trace element research 2021 v.199 no.3 pp. 825-828
ISSN:
0163-4984
Subject:
copper; copper deficiency,   etc   ; cost effectiveness; hematology; research;     Show all 5 Subjects
Abstract:
... Copper deficiency can produce changes mimicking myelodysplasia, but its prevalence among haematology patients is unknown. This study evaluates the prevalence of deficiency in a population of patients with unexplained cytopenia(s) and dysplasia. Of 17 patients recruited, only one was found to have a low copper level. This is the first study evaluating hypocupremia in patients with isolated haematol ...
DOI:
10.1007/s12011-020-02203-x

2. Copper(i)–iodide cluster structures as functional and processable platform materials

Author:
Troyano, Javier; Zamora, Félix; Delgado, Salomé
Source:
Chemical Society reviews 2021 v.50 no.7 pp. 4606-4628
ISSN:
1460-4744
Subject:
copper,   etc   ; chemical structure; ligands;     Show all 3 Subjects
Abstract:
... The combination of the copper(i)–iodide entity with organic ligands gives rise to a large variety of CuᴵI polynuclear structures in the form of molecular complexes or extended structures. An appropriate selection of these components allows the preparation of materials showing interesting physicochemical properties and potential applications, mainly focused on organic light-emitting diodes and opti ...
DOI:
10.1039/d0cs01470b

3. Copper–CNT interfacing with Cu-doped polydopamine in CNT carpet: copper nucleation and resistance decrease upon soft annealing

Author:
Duhain, Antoine; Guillot, Jérôme; Lamblin, Guillaume; Lenoble, Damien
Source:
RSC advances 2021 v.11 no.20 pp. 11900-11909
ISSN:
2046-2069
Subject:
copper,   etc   ; nitrogen; temperature;     Show all 3 Subjects
Abstract:
... In recent years, Cu–CNT composites have attracted much attention due to their remarkable properties, in comparison to pure copper, such as higher ampacity and a lower thermal coefficient of resistance. However, the fabrication of an efficient Cu–CNT composite is still challenging, mainly due to the high cuprophobicity of CNTs. To strengthen the chemical interactions between Cu and CNTs, we propose ...
DOI:
10.1039/d0ra09369f

4. A screen-printed three-electrode-type sticker device with an accurate liquid junction-type reference electrode

Author:
Shitanda, Isao; Miyazaki, Kaishi; Loew, Noya; Esaka, Ryosuke; Hoshi, Yoshinao; Itagaki, Masayuki
Source:
Chemical communications 2021 v.57 no.23 pp. 2875-2878
ISSN:
1364-548X
Subject:
copper,   etc   ; alloys; electrodes; liquids;     Show all 4 Subjects
Abstract:
... We developed a novel sticker device that can convert any metal or alloy into the working electrode of a three-electrode system, enabling simple and accurate measurement. The sticker, containing a counter electrode and a stable and accurate liquid junction-type reference electrode, is attached to the metal or alloy; meanwhile the surface exposed from a hole in the device functions as the working el ...
DOI:
10.1039/d1cc00850a

5. Cyanation of glycine derivatives

Author:
Liang, Jia; Fu, Ying; Bao, Xiazhen; Ou, Lanlan; Sang, Tongzhi; Yuan, Yong; Huo, Congde
Source:
Chemical communications 2021 v.57 no.24 pp. 3014-3017
ISSN:
1364-548X
Subject:
copper,   etc   ; catalysts; oxidants; reducing agents;     Show all 4 Subjects
Abstract:
... We report a catalytic oxidative C–H cyanation of glycine derivatives using a simple copper(i) catalyst with NFSI as an oxidant via a radical process to furnish α-cyano glycine derivatives, which are useful intermediates for organic synthesis. CuCl acted as both a one-electron reductant and a transition-metal catalyst in this transformation. NFSI served as a one-electron oxidant and generated a N-c ...
DOI:
10.1039/d0cc08126d

6. Hazardous minerals mining: Challenges and solutions

Author:
Rebello, Sharrel; Anoopkumar, A.N.; Aneesh, Embalil Mathachan; Sindhu, Raveendran; Binod, Parameswaran; Kim, Sang Hyoun; Pandey, Ashok
Source:
Journal of hazardous materials 2021 v.402 pp. 123474
ISSN:
0304-3894
Subject:
copper,   etc   ; bioleaching; ecosystems; human health;     Show all 4 Subjects
Abstract:
... Minerals are valuable resources gifted to man from the Mother Earth and quite often they need to be dug out from deep down with much effort to utilize them in many of our anthropogenic activities. The fascinating nature, colours as well as the physicochemical properties of minerals has extended their prospective value in the synthesis of various household and industrial products. However, knowledg ...
DOI:
10.1016/j.jhazmat.2020.123474

7. Copper-Catalyzed Enantiotopic-Group-Selective Allylation of gem-Diborylalkanes

Author:
Kim, Minjae; Park, Bohyun; Shin, Minkyeong; Kim, Suyeon; Kim, Junghoon; Baik, Mu-Hyun; Cho, Seung Hwan
Source:
Journal of the American Chemical Society 2021 v.143 no.2 pp. 1069-1077
ISSN:
1520-5126
Subject:
copper,   etc   ; allylation; ligands; reaction mechanisms;     Show all 4 Subjects
Abstract:
... We report a copper-catalyzed enatiotopic-group-selective allylation of gem-diborylalkanes with allyl bromides. The combination of copper(I) bromide and H₈–BINOL derived phosphoramidite ligand proved to be the most effective catalytic system to provide various enantioenriched homoallylic boronate esters, containing a boron-substituted stereogenic center that is solely derived from gem-diborylalkane ...
DOI:
10.1021/jacs.0c11750

8. Crystal plane effect of ceria on supported copper catalyst for liquid-phase hydrogenation of unsaturated aldehyde

Author:
Hu, Zhi; Zou, Zidan; Xie, Aidi; Chen, Chun; Zhu, Xiaoguang; Zhang, Yunxia; Zhang, Haimin; Zhao, Huijun; Wang, Guozhong
Source:
Journal of colloid and interface science 2021 v.596 pp. 34-43
ISSN:
0021-9797
Subject:
copper,   etc   ; aldehydes; catalysts; catalytic activity; hydrogenation;     Show all 5 Subjects
Abstract:
... Ceria has been widely used as catalyst support displaying a size- or shape-dependent catalytic performance due to the strong metal-support interaction (SMSI) effect with active metal. Almost all the studies on the SMSI effect of ceria-supported metal catalysts are involved generally in gas-phase reaction, but rarely in the liquid-phase reaction system. In this work, Cu/CeO₂-P (copper loaded on nan ...
DOI:
10.1016/j.jcis.2021.03.137

9. One-step extraction of high-purity CuCl2·2H2O from copper-containing electroplating sludge based on the directional phase conversion

Author:
Yu, Yao; Huang, Qiuyun; Zhou, Jin; Wu, Zhen; Deng, Hong; Liu, Xueming; Lin, Zhang
Source:
Journal of hazardous materials 2021 v.413 pp. 125469
ISSN:
0304-3894
Subject:
copper,   etc   ; chlorination; equations; heavy metals; sludge; volatilization;     Show all 6 Subjects
Abstract:
... The recovery of heavy metals is a vital way to turn electroplating sludge into resources and reduce its environmental hazards. However, the complex compositions of the polymetallic electroplating sludge severely limit the selective recovery of metal resources such as copper. In this study, we took a kind of copper-containing electroplating sludge (C-ES) as an example present and investigated the p ...
DOI:
10.1016/j.jhazmat.2021.125469

10. Insight into the role of copper in the promoted photocatalytic removal of NO using Zn2-xCuxCr-CO3 layered double hydroxide

Author:
Fragoso, J.; Oliva, M.A.; Camacho, L.; Cruz-Yusta, M.; de Miguel, G.; Martin, F.; Pastor, A.; Pavlovic, I.; Sánchez, L.
Source:
Chemosphere 2021 v.275 pp. 130030
ISSN:
0045-6535
Subject:
copper,   etc   ; absorption; coprecipitation; photocatalysis; photocatalysts; reflectance;     Show all 6 Subjects
Abstract:
... In this work the ability of Zn₂₋ₓCuₓCr-CO₃ layered double hydroxides (LDHs) as highly efficient DeNOx photocatalysts was studied. LDHs with x = 0, 0.2 and 0.4 were prepared using a coprecipitation method. The samples were characterized by different techniques such as XRD, XPS, FT-IR, ICP-MS, TG, SBET, SEM and Diffuse reflectance (DR). The increased amount of copper ions in the LDH layers gave rise ...
DOI:
10.1016/j.chemosphere.2021.130030

11. Morphophysiological responses of Aechmea blanchetiana (Bromeliaceae) to excess copper during in vitro culture

Author:
Martins, João Paulo Rodrigues; Rodrigues, Luiz Carlos de Almeida; Silva, Thayna dos Santos; Rossini, Franciele Pereira; Gontijo, Andreia Barcelos Passos Lima; Falqueto, Antelmo Ralph
Source:
Plant biosystems 2021 v.155 no.3 pp. 447-456
ISSN:
1724-5575
Subject:
copper,   etc   ; Aechmea; chlorenchyma; chlorophyll; fluorescence; liquids; photosynthesis;     Show all 7 Subjects
Abstract:
... The use of plants as bioindicators can be effective for environmental monitoring, mainly related to heavy metals such as copper (Cu). In vitro conditions are more easily controlled, to enable isolating the stress factors that can interfere in plants’ responses. The aim was to investigate the morphophysiological responses of Aechmea blanchetiana submitted to excess Cu, and to verify the degree of t ...
DOI:
10.1080/11263504.2020.1756976

12. Assessment of LeadCare® II analysis for testing of a wide range of blood lead levels in comparison with ICP–MS analysis

Author:
Nakata, Hokuto; Nakayama, Shouta M.M.; Yabe, John; Muzandu, Kaampwe; Toyomaki, Haruya; Yohannes, Yared Beyene; Kataba, Andrew; Zyambo, Golden; Ikenaka, Yoshinori; Choongo, Kennedy; Ishizuka, Mayumi
Source:
Chemosphere 2021 v.271 pp. 129832
ISSN:
0045-6535
Subject:
copper,   etc   ; blood; cadmium; clinical examination; lead; voltammetry;     Show all 6 Subjects
Abstract:
... The LeadCare® testing system, which utilizes anodic stripping voltammetry (ASV) methodology, has been widely used worldwide for cost-effective blood lead level (BLL) screening. However, some concerns have recently been issued regarding inaccurate results obtained using LeadCare®. Hence, we aimed to evaluate the accuracy of BLL measured by LeadCare® II (BLLLC) by comparison with ICP-MS (BLLIM) by t ...
DOI:
10.1016/j.chemosphere.2021.129832

13. Synthesis of triethoxysilylated cyclen derivatives, grafting on magnetic mesoporous silica nanoparticles and application to metal ion adsorption

Author:
Li, Hao; Ménard, Mathilde; Vardanyan, Ani; Charnay, Clarence; Raehm, Laurence; Oliviero, Erwan; Seisenbaeva, Gulaim A.; Pleixats, Roser; Durand, Jean-Olivier
Source:
RSC advances 2021 v.11 no.18 pp. 10777-10784
ISSN:
2046-2069
Subject:
copper,   etc   ; adsorption; ligands; magnetism; porous media; silica;     Show all 6 Subjects
Abstract:
... The synthesis through click chemistry of triethoxysilylated cyclen derivative-based ligands is described. Different methods were used such as the copper catalyzed Huisgen's reaction, or thiol–ene reaction for the functionalization of the cyclen scaffold with azidopropyltriethoxysilane or mercaptopropyltriethoxysilane, respectively. These ligands were then grafted on magnetic mesoporous silica nano ...
DOI:
10.1039/d1ra01581h

14. Use and misuse of 6-((anthracen-9-yl) methyleneamino)−2H-chromen-2-one for detection of metallic ions

Author:
Kováčik, Jozef
Source:
Journal of hazardous materials 2021 v.403 pp. 123985
ISSN:
0304-3894
Subject:
copper,   etc   ; cadmium; fluorescence microscopy; fluorescent dyes;     Show all 4 Subjects
Abstract:
... Liu et al. published the use of 6-((anthracen-9-yl) methyleneamino)−2H-chromen-2-one for visualization of copper or cadmium ions by fluorescence microscopy and cited this method by our previous paper. The fluorescence dye 6-((anthracen-9-yl) methyleneamino)−2H-chromen-2-one mentioned by the authors is not specific for Cu or Cd ions, we never tested it for this aim and some photos presented by the ...
DOI:
10.1016/j.jhazmat.2020.123985

15. Survival recovery rates by six clonal lineages of Daphnia longispina after intermittent exposures to copper

Author:
Venâncio, C.; Ribeiro, R.; Soares, A.M.V.M.; Lopes, I.
Source:
Chemosphere 2021 v.264 pp. 128403
ISSN:
0045-6535
Subject:
copper,   etc   ; Daphnia longispina; death; mortality; toxicity;     Show all 5 Subjects
Abstract:
... Natural populations are commonly exposed to sequential pulses of contaminants. Accordingly, this study aimed at testing the existence of an association between the tolerance to lethal levels of copper (Cu) and the survival recovery ability from pulsed partially lethal copper exposures in six clonal lineages of Daphnia longispina. It was hypothesized that the most tolerant genotypes would be the on ...
DOI:
10.1016/j.chemosphere.2020.128403

16. Graphdiyne nanosheets as a platform for accurate copper(ii) ion detection via click chemistry and fluorescence resonance energy transfer

Author:
Ge, Chenchen; Li, Jiaofu; Wang, Dou; Lv, Kongpeng; Liu, Quan; Shen, Yan; Zhuang, Xiaoqing; Luo, Wankun; Wu, Zongze; Zhang, Yuhua; Shi, Lulin; Liu, Liping; Bao, Shiyun; Zhang, Han
Source:
RSC advances 2021 v.11 no.10 pp. 5320-5324
ISSN:
2046-2069
Subject:
copper,   etc   ; chemistry; energy transfer; fluorescence; nanosheets;     Show all 5 Subjects
Abstract:
... A novel sensing platform for sensitive detection of copper(ii) ions (Cu²⁺) in living cells and body fluids was developed by taking advantage of the excellent fluorescence quenching ability of graphdiyne (GDY) and the high specificity of click chemistry for the first time. ...
DOI:
10.1039/d0ra08595b

17. Multiplexed CuAAC Suzuki–Miyaura Labeling for Tandem Activity-Based Chemoproteomic Profiling

Author:
Cao, Jian; Boatner, Lisa M.; Desai, Heta S.; Burton, Nikolas R.; Armenta, Ernest; Chan, Neil J.; Castellón, José O.; Backus, Keriann M.
Source:
Analytical chemistry 2021 v.93 no.4 pp. 2610-2618
ISSN:
1520-6882
Subject:
copper,   etc   ; Suzuki reaction; analytical chemistry; cycloaddition reactions;     Show all 4 Subjects
Abstract:
... Mass-spectrometry-based chemoproteomics has enabled the rapid and proteome-wide discovery of functional and potentially ’druggable’ hotspots in proteins. While numerous transformations are now available, chemoproteomic studies still rely overwhelmingly on copper(I)-catalyzed azide–alkyne cycloaddition (CuAAC) or ’click’ chemistry. The absence of bio-orthogonal chemistries that are functionally equ ...
DOI:
10.1021/acs.analchem.0c04726

18. On-Nanoparticle Gating Units Render an Ordinary Catalyst Substrate- and Site-Selective

Author:
Kim, Minju; Dygas, Miroslaw; Sobolev, Yaroslav I.; Beker, Wiktor; Zhuang, Qiang; Klucznik, Tomasz; Ahumada, Guillermo; Ahumada, Juan Carlos; Grzybowski, Bartosz A.
Source:
Journal of the American Chemical Society 2021 v.143 no.4 pp. 1807-1815
ISSN:
1520-5126
Subject:
copper,   etc   ; catalysts; hydrophobicity; ligands; optical isomerism;     Show all 5 Subjects
Abstract:
... When an organometallic catalyst is tethered onto a nanoparticle and is embedded in a monolayer of longer ligands terminated in “gating” end-groups, these groups can control the access and orientation of the incoming substrates. In this way, a nonspecific catalyst can become enzyme-like: it can select only certain substrates from substrate mixtures and, quite remarkably, can also preorganize these ...
DOI:
10.1021/jacs.0c09408

19. Thermal Cycling of a MOF-Based NO Disproportionation Catalyst

Author:
Wright, Ashley M.; Sun, Chenyue; Dincă, Mircea
Source:
Journal of the American Chemical Society 2021 v.143 no.2 pp. 681-686
ISSN:
1520-5126
Subject:
copper,   etc   ; catalysts; coordination polymers; thermal stability;     Show all 4 Subjects
Abstract:
... The metal–organic framework Cuᴵ-MFU-4l reacts with NO, initially forming a copper(I)-nitrosyl at low pressure, and subsequently generates NO disproportionation products Cuᴵᴵ–NO₂ and N₂O. The thermal stability of MFU-4l allows NOₓ to be released from the framework at temperatures greater than 200 °C. This treatment regenerates the original Cuᴵ-MFU-4l, which can engage in subsequent cycles of NO dis ...
DOI:
10.1021/jacs.0c12134

20. Structuring efficient photocatalysts into bespoke fiber shaped systems for applied water treatment

Author:
Theodorakopoulos, George V.; Romanos, George Em.; Katsaros, Fotios K.; Papageorgiou, Sergios K.; Kontos, Athanassios G.; Spyrou, Konstantinos; Beazi-Katsioti, Margarita; Falaras, Polycarpos
Source:
Chemosphere 2021 v.277 pp. 130253
ISSN:
0045-6535
Subject:
copper; copper nanoparticles,   etc   ; adsorption; carbon; ceramics; heat treatment; industrial wastewater; nitrogen; photocatalysis; photocatalysts; water treatment;     Show all 11 Subjects
Abstract:
... In this study, structured photocatalytic systems were successfully developed by a facile method based on Alginate molds and a wet-spinning/cross-linking technique, yielding commercial photocatalyst (Degussa P25) in the form of all-ceramic hollow fibers (HFs). Taking advantage of alginate’s exceptional sorption properties, copper augmented HFs were also developed. The structured photocatalysts were ...
DOI:
10.1016/j.chemosphere.2021.130253