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Kotovshchikov YN, Binyakovsky AA, Latyshev GV, Lukashev NV, Beletskaya IP. Copper-catalyzed deacetonative Sonogashira coupling. Org Biomol Chem 2022; 20:7650-7657. [PMID: 36134515 DOI: 10.1039/d2ob01267g] [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 convenient Pd- and phosphine-free protocol for assembling internal alkynes from tertiary propargyl alcohols and (het)aryl halides has been developed. The proposed tandem approach includes the base-promoted retro-Favorskii fragmentation followed by Cu-catalyzed C(sp)-C(sp2) cross-coupling. The use of inexpensive reagents (e.g. a catalyst, additives, a base, and a solvent) and good functional group tolerance make the procedure practical and cost-effective. The synthetic utility of the method was demonstrated by a smooth alkynylation of vinyl iodides derived from natural steroidal hormones.
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Affiliation(s)
- Yury N Kotovshchikov
- Chemistry Department, M. V. Lomonosov Moscow State University, Leninskiye Gory 1/3, Moscow 119991, Russia.
| | - Artem A Binyakovsky
- Chemistry Department, M. V. Lomonosov Moscow State University, Leninskiye Gory 1/3, Moscow 119991, Russia.
| | - Gennadij V Latyshev
- Chemistry Department, M. V. Lomonosov Moscow State University, Leninskiye Gory 1/3, Moscow 119991, Russia.
| | - Nikolay V Lukashev
- Chemistry Department, M. V. Lomonosov Moscow State University, Leninskiye Gory 1/3, Moscow 119991, Russia.
| | - Irina P Beletskaya
- Chemistry Department, M. V. Lomonosov Moscow State University, Leninskiye Gory 1/3, Moscow 119991, Russia.
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2
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Chiral bis(pyrazolyl)methane copper(I) complexes and their application in nitrene transfer reactions. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2021. [DOI: 10.1515/znb-2021-0140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this study, chiral bis(pyrazolyl)methane copper(I) acetonitrile complexes were applied to generate two novel terminal copper tosyl nitrene complexes with the nitrene generating agent SPhINTs in dichloromethane at low temperatures. The syntheses of the chiral bis(pyrazolyl)methane ligands are based on pulegone and camphor, members of the natural chiral pool. The chiral copper(I) acetonitrile complexes were applied as catalysts in the copper nitrene mediated aziridination reaction of different styrene derivatives and the C–H amination of various substrates. The reactions afforded good yields, but low enantiomeric excess under mild conditions. The nitrene species have been characterized with UV/Vis and EPR spectroscopy and the products of the decay by ESI mass spectrometry.
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3
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Thomas F, Oster M, Schön F, Göbgen KC, Amarouch B, Steden D, Hoffmann A, Herres-Pawlis S. A new generation of terminal copper nitrenes and their application in aromatic C-H amination reactions. Dalton Trans 2021; 50:6444-6462. [PMID: 33908532 DOI: 10.1039/d1dt00832c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper nitrene complexes are highly reactive species and are known as intermediates in the copper catalyzed C-H amination. In this study, three novel copper tosyl nitrene complexes were synthesized at low temperatures, stabilized with heteroscorpionate ligands of the bis(pyrazolyl)methane family. The copper nitrenes were obtained by the reaction of a copper(i) acetonitrile complex with SPhINTs in dichloromethane. We show that the ligand design has a major influence on the catalytic activity and the thermal stability of the copper nitrene complex. Not only the choice of the third N donor, but also the substituent in the 5-position of the pyrazolyl moiety, have an impact on the stability. Furthermore, the novel copper nitrene complexes were used for catalytic aziridination of styrenes and C-H amination reactions of aromatic and aliphatic substrates under mild reaction conditions. Even challenging substrates like benzene and cyclohexane were aminated with good yields. The copper nitrene complexes were characterized using UV/Vis spectroscopy, low temperature Evans NMR spectroscopy, density functional theory, domain-based local pair natural orbital coupled cluster calculations (DLPNO-CCSD(T)) and cryo-UHR mass spectrometry.
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Affiliation(s)
- Fabian Thomas
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany.
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4
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Khaligh NG, Mihankhah T. Greener and practical synthesis of 4,4′‐(arylmethylene)bis(
3‐methyl‐1‐phenyl‐1H
‐pyrazol‐5‐ol)s through a conventional heating and a mechanochemical procedure. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nader Ghaffari Khaligh
- Nanotechnology and Catalysis Research Center Institute of Postgraduate Studies, University of Malaya Kuala Lumpur Malaysia
| | - Taraneh Mihankhah
- Environmental Research Laboratory, Department of Water and Environmental Engineering School of Civil Engineering, Iran University of Science and Technology Tehran Iran
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5
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Khaligh NG, Mihankhah T, Gorjian H, Johan MR. Greener and facile synthesis of 4,4′-(arylmethylene)bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)s through a conventional heating procedure. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1799014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Nader Ghaffari Khaligh
- Nanotechnology and Catalysis Research Centre, Institute of Postgraduate Studies, University of Malaya, Kuala Lumpur, Malaysia
| | - Taraneh Mihankhah
- Environmental Research Laboratory, Department of Water and Environmental Engineering, School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Hayedeh Gorjian
- Department of Food Science and Technology, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
| | - Mohd Rafie Johan
- Nanotechnology and Catalysis Research Centre, Institute of Postgraduate Studies, University of Malaya, Kuala Lumpur, Malaysia
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6
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Schäfer D, Fink F, Kleinschmidt D, Keisers K, Thomas F, Hoffmann A, Pich A, Herres-Pawlis S. Enhanced catalytic activity of copper complexes in microgels for aerobic oxidation of benzyl alcohols. Chem Commun (Camb) 2020; 56:5601-5604. [PMID: 32355940 DOI: 10.1039/d0cc02433c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytically active copper bis(pyrazolyl)methane complexes have been anchored into pVCL-GMA microgels on specified positions within the microgel network. Functionalized microgels act as nanoreactors providing a tailored environment and stabilization for the copper complexes thus increasing the product yield. The oxidation of benzyl alcohols to their respective aldehydes was chosen as a test reaction to show the enhancement of catalytic activity due to the immobilization of the copper complex compared to the copper salt and the molecular copper complex.
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Affiliation(s)
- Dominic Schäfer
- Chair of Bioinorganic Chemistry, Institute for Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Fabian Fink
- Chair of Bioinorganic Chemistry, Institute for Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Denise Kleinschmidt
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany. and Leibniz-Institute for Interactive Materials (DWI), Forckenbeckstraße 50, 52074 Aachen, Germany
| | - Kristina Keisers
- Chair of Bioinorganic Chemistry, Institute for Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Fabian Thomas
- Chair of Bioinorganic Chemistry, Institute for Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Alexander Hoffmann
- Chair of Bioinorganic Chemistry, Institute for Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Andrij Pich
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany. and Leibniz-Institute for Interactive Materials (DWI), Forckenbeckstraße 50, 52074 Aachen, Germany and Aachen Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
| | - Sonja Herres-Pawlis
- Chair of Bioinorganic Chemistry, Institute for Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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7
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Preparation, functionalization and characterization of engineered carbon nanodots. Nat Protoc 2019; 14:2931-2953. [PMID: 31534230 DOI: 10.1038/s41596-019-0207-x] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 06/04/2019] [Indexed: 02/07/2023]
Abstract
Carbon-based dots (CDs) and their functionalized (nano)composites have recently attracted attention due to their seemingly easy preparation and numerous potential applications, ranging from those in the biomedical field (i.e., imaging and drug delivery) to those in (opto)electronics (i.e., solar cells and LEDs). This protocol details step-by-step procedures for synthesis, purification, functionalization and characterization of nitrogen-doped carbon nanodots (NCNDs), which we have been preparing for the past few years. First, we describe the bottom-up synthesis of NCNDs, starting with the use of molecular precursors (arginine (Arg) and ethylenediamine (EDA)) and making use of microwave-assisted hydrothermal heating. We also provide guidelines for the purification of these materials, through either dialysis or low-pressure size-exclusion chromatography (SEC). Second, we outline post-functionalization procedures for the surface modification of NCNDs, such as alkylation and amidation reactions. Third, we provide instructions for the preparation of NCNDs with different properties, such as color emission, electrochemistry and chirality. Given the fast evolution of preparations and applications of CDs, issues that might arise from artifacts, errors and impurities should be avoided. In this context, the present protocol aims to provide details and guidelines for the synthesis of high-quality nanomaterials with high reproducibility, for various applications. Furthermore, specific needs might require the CDs to be prepared by different synthetic procedures and/or from different molecular precursors, but such CDs can still benefit from the purification and characterization procedures outlined in this protocol. The sample preparation takes various time frames, ranging from 4 to 18 d, depending on the adopted synthesis and purification steps.
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8
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Mertens MAS, Thomas F, Nöth M, Moegling J, El‐Awaad I, Sauer DF, Dhoke GV, Xu W, Pich A, Herres‐Pawlis S, Schwaneberg U. One‐Pot Two‐Step Chemoenzymatic Cascade for the Synthesis of a Bis‐benzofuran Derivative. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900904] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
| | - Fabian Thomas
- Aachen Institute of Inorganic Chemistry Landoltweg 1 52074 Aachen Germany
| | - Maximilian Nöth
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
- DWI Leipniz‐Institut für Interaktive Materialien e.V. Forckenbeckstr. 50 52056 Aachen Germany
| | - Julian Moegling
- Aachen Institute of Inorganic Chemistry Landoltweg 1 52074 Aachen Germany
| | - Islam El‐Awaad
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
- DWI Leipniz‐Institut für Interaktive Materialien e.V. Forckenbeckstr. 50 52056 Aachen Germany
- Department of Pharmacognosy Faculty of Pharmacy Assiut University 71526 Assiut Egypt
| | - Daniel F. Sauer
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Gaurao V. Dhoke
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Wenjing Xu
- DWI Leipniz‐Institut für Interaktive Materialien e.V. Forckenbeckstr. 50 52056 Aachen Germany
| | - Andrij Pich
- DWI Leipniz‐Institut für Interaktive Materialien e.V. Forckenbeckstr. 50 52056 Aachen Germany
| | | | - Ulrich Schwaneberg
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
- DWI Leipniz‐Institut für Interaktive Materialien e.V. Forckenbeckstr. 50 52056 Aachen Germany
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9
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Tzouras NV, Stamatopoulos IK, Papastavrou AT, Liori AA, Vougioukalakis GC. Sustainable metal catalysis in C H activation. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.04.012] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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10
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Mastalir M, Pittenauer E, Stöger B, Allmaier G, Kirchner K. Three Different Reactions, One Catalyst: A Cu(I) PNP Pincer Complex as Catalyst for C–C and C–N Cross-Couplings. Org Lett 2017; 19:2178-2181. [DOI: 10.1021/acs.orglett.7b00857] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Matthias Mastalir
- Institute of Applied
Synthetic Chemistry and ‡Institute of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/163-AC, A-1060 Wien, Austria
| | | | | | | | - Karl Kirchner
- Institute of Applied
Synthetic Chemistry and ‡Institute of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/163-AC, A-1060 Wien, Austria
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11
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Herber U, Hegner K, Wolters D, Siris R, Wrobel K, Hoffmann A, Lochenie C, Weber B, Kuckling D, Herres-Pawlis S. Iron(II) and Zinc(II) Complexes with Tetradentate Bis(pyrazolyl)methane Ligands as Catalysts for the Ring-Opening Polymerisation ofrac-Lactide. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601345] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ulrich Herber
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Katharina Hegner
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Daniel Wolters
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Rita Siris
- Department of Chemistry and Pharmacy; LMU Munich; Butenandtstr. 5-13 81377 München Germany
| | - Karina Wrobel
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Alexander Hoffmann
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Charles Lochenie
- Inorganic Chemistry II; University of Bayreuth; Universitätsstraße 30 95440 Bayreuth Germany
| | - Birgit Weber
- Inorganic Chemistry II; University of Bayreuth; Universitätsstraße 30 95440 Bayreuth Germany
| | - Dirk Kuckling
- Department of Chemistry; Paderborn University; Warburger Str. 100 33098 Paderborn Germany
| | - Sonja Herres-Pawlis
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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12
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Wang X, Wang Z, Wu Y, Luo Y, Zhang G, Jian Y, Sun H, Zhang W, Gao Z. Highly modulated bisindoles: ligands for copper-catalyzed Sonogashira reaction. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3510] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiu Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; 199 South Chang'an Road Xi'an China
| | - Zhenhua Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; 199 South Chang'an Road Xi'an China
| | - Ya Wu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; 199 South Chang'an Road Xi'an China
| | - Yanlong Luo
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; 199 South Chang'an Road Xi'an China
| | - Guofang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; 199 South Chang'an Road Xi'an China
| | - Yajun Jian
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; 199 South Chang'an Road Xi'an China
| | - Huaming Sun
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; 199 South Chang'an Road Xi'an China
| | - Weiqiang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; 199 South Chang'an Road Xi'an China
| | - Ziwei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; 199 South Chang'an Road Xi'an China
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13
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Exploration of Intermolecular Interaction of One Silver(I) Polymer with Bis(pyrazolyl)methane Derivative: Experimental Observations, Hirshfeld Surface Analyses and Fluorescent Properties. J Inorg Organomet Polym Mater 2016. [DOI: 10.1007/s10904-016-0335-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Wang X, Wang Z, Xie Z, Zhang G, Zhang W, Gao Z. Functionalized α,β-ynones: efficient ligand for Cu catalyzed Sonogashira-type cross-coupling reaction. RSC Adv 2016. [DOI: 10.1039/c6ra23742h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
1,3-Yones as σ-, π-electron donating ligands significantly accelerated the cross-coupling reactions of aryl iodides with terminal alkynes, in which as low as 0.1 to 1 mol% of CuI were efficiently activated.
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Affiliation(s)
- Xian Wang
- Key Laboratory of Applied Surface and Colloid Chemistry
- MOE
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
| | - Zhenhua Wang
- Key Laboratory of Applied Surface and Colloid Chemistry
- MOE
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
| | - Zunyuan Xie
- Key Laboratory of Applied Surface and Colloid Chemistry
- MOE
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
| | - Guofang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry
- MOE
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
| | - Weiqiang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry
- MOE
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
| | - Ziwei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry
- MOE
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
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