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Wang T, Zhao J, Wu L, Liu W, Li Y, Yang Y. Polymer Network Film with Double Reflection Bands Prepared Using a Thermochromic Cholesteric Liquid Crystal Mixture. ACS APPLIED MATERIALS & INTERFACES 2024; 16:18001-18007. [PMID: 38530237 DOI: 10.1021/acsami.4c00865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Cholesteric liquid crystal polymer network (CLCN) films with a single reflection band have found applications for decoration and anticounterfeiting. The CLCN films with double reflection bands were more suitable for these applications. Herein, they were prepared by using thermochromic cholesteric liquid crystals (CLCs) through a two-step photopolymerization approach. At the first step, due to oxygen inhibition, the CLC monomers near the substrate surface were polymerized at a certain temperature. At the second step, those near the air were polymerized at another temperature. The wavelengths of these two reflection bands of the CLCN film were dominated by the two polymerization temperatures. Based on this approach, patterns with composite colors were prepared, which were suitably applied for decoration. Moreover, a double-layered CLCN film with a broad reflection band was prepared that could potentially be applied for displays.
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Affiliation(s)
- Tingting Wang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Jinghua Zhao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Limin Wu
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, P. R. China
| | - Wei Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yi Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yonggang Yang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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Zhao J, Yu R, Wu L, Li Y, Liu W, Yang Y. A PSCLC Pattern Prepared Based on Handedness Inversion for Anti-counterfeiting. Chem Asian J 2023; 18:e202300636. [PMID: 37606182 DOI: 10.1002/asia.202300636] [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: 07/20/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 08/23/2023]
Abstract
Handedness inversion has been widely studied in supramolecular chemistry and material sciences. Herein, a photoisomerizable chiral dopant was synthesized, which could induce the formation of a cholesteric phase with right-handedness. The Bragg reflection band of the cholesteric liquid crystal (CLC) mixture shifted to the long wavelength with extending 365 nm UV light irradiation time. Based on this photochromic property, a colourful polymer-stabilized CLC (PSCLC) film was prepared using a grayscale mask. A handedness reversible CLC mixture was prepared using a mixture of this chiral dopant and S5011. With extending the UV light irradiation time, the handedness of the CLC mixture changed from right- to left-handedness. A patterned PSCLC film was prepared using this CLC mixture. Complementary images were observed under right- and left-handedness circularly polarized lights. The results shown here not only give us a better understanding the competition between photopolymerization and photoisomerization, but also lay the foundations for decoration and anti-counterfeiting.
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Affiliation(s)
- Jinghua Zhao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Runwei Yu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Limin Wu
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu Province, P. R. China
| | - Yi Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Wei Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yonggang Yang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
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Green J, Tinson RAJ, Betts JHJ, Piras M, Pelut A, Steverding D, Wren SP, Searcey M, Troeberg L. Suramin analogues protect cartilage against osteoarthritic breakdown by increasing levels of tissue inhibitor of metalloproteinases 3 (TIMP-3) in the tissue. Bioorg Med Chem 2023; 92:117424. [PMID: 37517101 DOI: 10.1016/j.bmc.2023.117424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 08/01/2023]
Abstract
Osteoarthritis is a chronic degenerative joint disease affecting millions of people worldwide, with no disease-modifying drugs currently available to treat the disease. Tissue inhibitor of metalloproteinases 3 (TIMP-3) is a potential therapeutic target in osteoarthritis because of its ability to inhibit the catabolic metalloproteinases that drive joint damage by degrading the cartilage extracellular matrix. We previously found that suramin inhibits cartilage degradation through its ability to block endocytosis and intracellular degradation of TIMP-3 by low-density lipoprotein receptor-related protein 1 (LRP1), and analysis of commercially available suramin analogues indicated the importance of the 1,3,5-trisulfonic acid substitutions on the terminal naphthalene rings for this activity. Here we describe synthesis and structure-activity relationship analysis of additional suramin analogues using ex vivo models of TIMP-3 trafficking and cartilage degradation. This showed that 1,3,6-trisulfonic acid substitution of the terminal naphthalene rings was also effective, and that the protective activity of suramin analogues depended on the presence of a rigid phenyl-containing central region, with para/para substitution of these phenyl rings being most favourable. Truncated analogues lost protective activity. The physicochemical characteristics of suramin and its analogues indicate that approaches such as intra-articular injection would be required to develop them for therapeutic use.
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Affiliation(s)
- Jonathan Green
- Norwich Medical School, University of East Anglia, Norwich NR4 7UQ, United Kingdom
| | - Ryan A J Tinson
- Norwich Medical School, University of East Anglia, Norwich NR4 7UQ, United Kingdom; School of Pharmacy, University of East Anglia, Norwich NR4 7TJ, United Kingdom
| | - Jacob H J Betts
- Norwich Medical School, University of East Anglia, Norwich NR4 7UQ, United Kingdom
| | - Monica Piras
- Target Discovery Institute, University of Oxford, Oxford OX3 7FZ, United Kingdom
| | - Aylin Pelut
- Norwich Medical School, University of East Anglia, Norwich NR4 7UQ, United Kingdom
| | - Dietmar Steverding
- Norwich Medical School, University of East Anglia, Norwich NR4 7UQ, United Kingdom
| | - Stephen P Wren
- Target Discovery Institute, University of Oxford, Oxford OX3 7FZ, United Kingdom; Department of Chemical and Pharmaceutical Sciences, Kingston University, Kingston upon Thames KT1 2EE, United Kingdom
| | - Mark Searcey
- School of Pharmacy, University of East Anglia, Norwich NR4 7TJ, United Kingdom
| | - Linda Troeberg
- Norwich Medical School, University of East Anglia, Norwich NR4 7UQ, United Kingdom.
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Yu R, Cao Y, Chen K, Li Y, Liu W, Li B, Li H, Yang Y. Light Intensity-Selective Photopolymerization and Photoisomerization for Creating Colorful Polymer-Stabilized Cholesteric Liquid Crystal Patterns. ACS APPLIED MATERIALS & INTERFACES 2022; 14:38228-38234. [PMID: 35960859 DOI: 10.1021/acsami.2c10763] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Polymer-stabilized cholesteric liquid crystal (PSCLC) films have been widely studied for their application as sensors, polarizers, and reflective windows. However, the preparation of programmable and colorful patterns based on the structural color is still challenging. Herein, the photochromic CLC mixtures were prepared by adding a photoisomerizable chiral additive (CA) and a photoinitiator in the nematic liquid crystal LC242. Under UV irradiation with weak intensity, photoisomerization of the CA was carried out and photopolymerization was suppressed by oxygen inhibition. With extending the irradiation time, the helical pitch of the CLC film increased and the selective Bragg reflection band tended to redshift. Under strong UV irradiation, oxygen inhibition was overcome and photopolymerization dominates the reaction. Therefore, the colorful-patterned PSCLC films were able to be prepared using masks. The results shown here not only give us a better understanding of the effect of oxygen inhibition but also lay the foundations for practical applications such as decoration and optical devices.
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Affiliation(s)
- Runwei Yu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Key Laboratory of Polymeric Materials Design and Synthesis for Biomedical Function, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yu Cao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Key Laboratory of Polymeric Materials Design and Synthesis for Biomedical Function, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Kai Chen
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Key Laboratory of Polymeric Materials Design and Synthesis for Biomedical Function, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yi Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Key Laboratory of Polymeric Materials Design and Synthesis for Biomedical Function, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Wei Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Key Laboratory of Polymeric Materials Design and Synthesis for Biomedical Function, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Baozong Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Key Laboratory of Polymeric Materials Design and Synthesis for Biomedical Function, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Hongkun Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Key Laboratory of Polymeric Materials Design and Synthesis for Biomedical Function, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yonggang Yang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Key Laboratory of Polymeric Materials Design and Synthesis for Biomedical Function, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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Sun W, Chen X, Li Y, Liu W, Li H, Yang Y. Anti-counterfeiting Behaviour of Organic-Inorganic Hybrid Silica Film with a Chiral Smectic C Structure. Chem Asian J 2022; 17:e202200793. [PMID: 35980218 DOI: 10.1002/asia.202200793] [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: 07/29/2022] [Indexed: 11/07/2022]
Abstract
Artificial photonic materials based on chiral liquid-crystalline nanostructures have attracted increasing interests for their wide applications as sensors, anti-counterfeit measures, displays and colour filters. Although the structurally coloured films with chiral nematic structures or blue phases have been prepared, the ones fabricated by fixing chiral smectic C (SmC*) phases have been rarely reported. In this work, organic-inorganic hybrid silica (OIHS) films with a SmC* structure were reported for the first time. An organosilane (CSC) with an enantiotropic SmC* phase was synthesized. The OIHS films with a SmC* structure were fabricated by the polycondensation of CSC under an acidic condition. The colour patterns can be observed in the oblique view, but not be observed in the vertical view, which is mainly due to the light scattering of the nanoparticles on film surface and the selective Bragg reflection of film inside. Therefore, such properties make the OIHS films promising candidates for anti-counterfeiting applications.
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Affiliation(s)
- Wei Sun
- Soochow University, College of Chemistry, Chemical Engineering and Materials Science,, CHINA
| | - Xiaofang Chen
- Soochow University, College of Chemistry, Chemical Engineering and Materials Science, CHINA
| | - Yi Li
- Soochow University, College of Chemistry, Chemical Engineering and Materials Science, CHINA
| | - Wei Liu
- Soochow University, College of Chemistry, Chemical Engineering and Materials Science, CHINA
| | - Hongkun Li
- Soochow University, Ren'ai Road 199, CHINA
| | - Yonggang Yang
- Soochow University, College of Chemistry, Chemical Engineering and Materials Science, CHINA
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Synergistic interaction of renewable nipagin and eugenol for aromatic copoly(ether ester) materials with desired performance. Sci Rep 2021; 11:24119. [PMID: 34916589 PMCID: PMC8677751 DOI: 10.1038/s41598-021-03614-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 12/07/2021] [Indexed: 11/10/2022] Open
Abstract
Naturally occurring nipagin and eugenol were used as the collaborative starting materials for poly(ether ester) polymers. In this study, two series of nipagin and eugenol-derived copoly(ether ester)s, PHN11−xE1x and PHN11−xE2x (x = 0%, 5%, 10%, 15%, 20%), were prepared with renewable 1,6-hexanediol as a comonomer. The nipagin-derived component acts as the renewable surrogate of petroleum-based dimethyl terephthalate (DMT), while the eugenol-derived component acts as the cooperative property modifier of parent homopoly(ether ester) PHN1. 1,6-Hexanediol was chosen as the spacer because of its renewability, high boiling point, and short chain to enhance the glass transition temperatures (Tgs) of materials. The molecular weights and chemical structures were confirmed by gel permeation chromatograph (GPC), NMR and FTIR spectroscopies. Thermal and crystalline properties were studied by thermal gravimetric analysis (TGA), differential scanning calorimetric (DSC) and wide-angle X-ray diffraction (WXRD). The tensile assays were conducted to evaluate the mechanical properties. The results suggested that properties of this kind of poly(ether ester)s could be finely tuned by the relative content of two components for the desired applications (elastomer, rubbery) suitable for different scenarios from polyethylene glycol terephthalate (PET) and polybutylene terephthalate (PBT).
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Precise size control of sub-10 nm structures of cholesteryl-containing mesogen-jacketed liquid crystalline polymers. POLYMER 2017. [DOI: 10.1016/j.polymer.2016.08.085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Sodemura T, Kubo S, Higuchi H, Kikuchi H, Nakagawa M. Unimodal Nematic Liquid Crystalline Random Copolymers Designed for Accepting Chiral Dopants. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20160343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Deng J, Xu BH, Wang YF, Mo XE, Zhang R, Li Y, Zhang SJ. Brønsted acidic ionic liquid-catalyzed dehydrative formation of isosorbide from sorbitol: introduction of a continuous process. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00512a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A highly efficient synthesis of isosorbide from sorbitol was developed using Brønsted acidic ionic liquids (BILs) as the catalyst for the first time.
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Affiliation(s)
- Jie Deng
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Bao-Hua Xu
- Beijing Key Laboratory of Ionic Liquids Clean Process
- Key Laboratory of Green Process and Engineering
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
| | - Yao-Feng Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process
- Key Laboratory of Green Process and Engineering
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
| | - Xian-En Mo
- Beijing Key Laboratory of Ionic Liquids Clean Process
- Key Laboratory of Green Process and Engineering
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
| | - Rui Zhang
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - You Li
- Beijing Key Laboratory of Ionic Liquids Clean Process
- Key Laboratory of Green Process and Engineering
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
| | - Suo-Jiang Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process
- Key Laboratory of Green Process and Engineering
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
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Ryabchun A, Raguzin I, Stumpe J, Shibaev V, Bobrovsky A. Cholesteric Polymer Scaffolds Filled with Azobenzene-Containing Nematic Mixture with Phototunable Optical Properties. ACS APPLIED MATERIALS & INTERFACES 2016; 8:27227-27235. [PMID: 27633069 DOI: 10.1021/acsami.6b09642] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The past two decades witnessed tremendous progress in the field of creation of different types of responsive materials. Cholesteric polymer networks present a very promising class of smart materials due to the combination of the unique optical properties of cholesteric mesophase and high mechanical properties of polymer networks. In the present work we demonstrate the possibility of fast and reversible photocontrol of the optical properties of cholesteric polymer networks. Several cholesteric photopolymerizable mixtures are prepared, and porous cholesteric network films with different helix pitches are produced by polymerization of these mixtures. An effective and simple method of the introduction of photochromic azobenzene-containing nematic mixture capable of isothermal photoinducing the nematic-isotropic phase transition into the porous polymer matrix is developed. It is found that cross-linking density and degree of polymer network filling with a photochromic nematic mixture strongly influence the photo-optical behavior of the obtained composite films. In particular, the densely cross-linked films are characterized by a decrease in selective light reflection bandwidth, whereas weakly cross-linked systems display two processes: the shift of selective light reflection peak and decrease of its width. It is noteworthy that the obtained cholesteric materials are shown to be very promising for the variety applications in optoelectronics and photonics.
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Affiliation(s)
- Alexander Ryabchun
- Fraunhofer Institute for Applied Polymer Research , Geiselbergstrasse 69, 14476 Potsdam-Golm, Germany
- Chemistry Department, Moscow State University , Lenin Hills 1, 119991 Moscow, Russia
| | - Ivan Raguzin
- Leibniz Institute of Polymer Research , Hohe Strasse 6, 01069 Dresden, Germany
| | - Joachim Stumpe
- University of Potsdam , Am Mühlenberg 11, 14476 Potsdam, Germany
| | - Valery Shibaev
- Chemistry Department, Moscow State University , Lenin Hills 1, 119991 Moscow, Russia
| | - Alexey Bobrovsky
- Chemistry Department, Moscow State University , Lenin Hills 1, 119991 Moscow, Russia
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