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Lv P, Stevensson B, Mathew R, Wang T, Edén M. Sub-Nanometer-Range Structural Effects From Mg 2+ Incorporation in Na-Based Borosilicate Glasses Revealed by Heteronuclear NMR and MD Simulations. J Phys Chem B 2024; 128:6922-6939. [PMID: 38981089 PMCID: PMC11264277 DOI: 10.1021/acs.jpcb.4c01840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 06/03/2024] [Accepted: 06/03/2024] [Indexed: 07/11/2024]
Abstract
Magic-angle-spinning (MAS) nuclear magnetic resonance (NMR) experiments and molecular dynamics (MD) simulations were employed to investigate Na2O-B2O3-SiO2 and MgO-Na2O-B2O3-SiO2 glass structures up to ≈0.3 nm. This encompassed the {Na[p]}, {Mg[p]}, and {B[3], B[4]} speciations and the {Si, B[p], M[p]}-BO and {Si, B[p], M[p]}-NBO interatomic distances to the bridging oxygen (BO) and nonbridging oxygen (NBO) species, where the superscript indicates the coordination number. The MD simulations revealed the dominance of Mg[5] coordinations, as mirrored in average Mg2+ coordination numbers in the 5.2-5.5 range, which are slightly lower than those of the larger Na+ cation but with a narrower coordination distribution stemming from the higher cation field strength (CFS) of the smaller divalent Mg2+ ion. We particularly aimed to elucidate such Na+/Mg2+ CFS effects, which primarily govern the short-range structure but also the borosilicate (BS) glass network order, where both MD simulations and heteronuclear double-resonance 11B/29Si NMR experiments revealed a reduction of B[4]-O-Si linkages relative to B[3]-O-Si upon Mg2+-for-Na+ substitution. These effects were quantified and discussed in relation to previous literature on BS glasses, encompassing the implications for simplified structural models and descriptions thereof.
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Affiliation(s)
- Peng Lv
- MOE
Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, Gansu 730000, PR China
- Key
Laboratory of Special Function Materials and Structure Design Ministry
of Education, Lanzhou University, Lanzhou, Gansu 730000, PR China
- Physical
Chemistry Division, Department of Materials and Environmental Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Baltzar Stevensson
- Physical
Chemistry Division, Department of Materials and Environmental Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Renny Mathew
- Physical
Chemistry Division, Department of Materials and Environmental Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Tieshan Wang
- MOE
Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, Gansu 730000, PR China
- Key
Laboratory of Special Function Materials and Structure Design Ministry
of Education, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Mattias Edén
- Physical
Chemistry Division, Department of Materials and Environmental Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
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2
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Kim C, Kozakci I, Lee SY, Kim B, Kim J, Lee J, Ma BS, Oh ES, Kim TS, Lee JY. Quantum Dot-Siloxane Anchoring on Colloidal Quantum Dot Film for Flexible Photovoltaic Cell. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302195. [PMID: 37300352 DOI: 10.1002/smll.202302195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/15/2023] [Indexed: 06/12/2023]
Abstract
Lead sulfide (PbS) colloidal quantum dots (CQDs) are promising materials for next-generation flexible solar cells because of near-infrared absorption, facile bandgap tunability, and superior air stability. However, CQD devices still lack enough flexibility to be applied to wearable devices owing to the poor mechanical properties of CQD films. In this study, a facile approach is proposed to improve the mechanical stability of CQDs solar cells without compromising the high power conversion efficiency (PCE) of the devices. (3-aminopropyl)triethoxysilane (APTS) is introduced on CQD films to strengthen the dot-to-dot bonding via QD-siloxane anchoring, and as a result, crack pattern analysis reveals that the treated devices become robust to mechanical stress. The device maintains 88% of the initial PCE under 12 000 cycles at a bending radius of 8.3 mm. In addition, APTS forms a dipole layer on CQD films, which improves the open circuit voltage (VOC ) of the device, achieving a PCE of 11.04%, one of the highest PCEs in flexible PbS CQD solar cells.
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Affiliation(s)
- Changjo Kim
- School of Electrical Engineering (EE), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Irem Kozakci
- School of Electrical Engineering (EE), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Sang Yeon Lee
- Information and Electronics Research Institute, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Byeongsu Kim
- School of Electrical Engineering (EE), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Junho Kim
- School of Electrical Engineering (EE), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jihyung Lee
- School of Electrical Engineering (EE), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Boo Soo Ma
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Eun Sung Oh
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Taek-Soo Kim
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jung-Yong Lee
- School of Electrical Engineering (EE), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
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3
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Tyagi R, Srinivasan S. Co-doping studies to enhance the life and electro-chemo-mechanical properties of the LiMn 2O 4 cathode using multi-scale modeling and neuro-computing techniques. Phys Chem Chem Phys 2022; 24:18645-18666. [PMID: 35894829 DOI: 10.1039/d2cp02304k] [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 number of engineered cathode materials with longer life cycles and better electro-chemo-mechanical properties can be obtained by partially replacing some of the elements with other relevant ones without compromising much with the structure. To design such superior cathode materials, in this work, we replace a small number (5% or 10%) of Mn3+, with one of the following elements: aluminium, nickel, magnesium, gallium, chromium, and yttrium. Additionally, S2- and F- were used to replace some (∼1%) of the O2- ions (anion) in the crystal. In this work, we have used a combination of Quantum Mechanics (QM), Classical Molecular Dynamics (CMD), Neural Network (NN) and Computational Fluid Dynamics (CFD) modeling. QM has been used to validate the Classical Molecular Dynamics (CMD) simulation results for engineered structures where experimental data are not available. CMD simulations are used to obtain material properties such as lattice expansion, Young's modulus, and diffusion coefficients for un-doped, doped and co-doped structures. NN modeling was used to reduce the computational time to evaluate millions of possible crystal configurations. Finally, the impact of co-doping strategies at the macroscale has been studied using CFD simulations. As a first step, we employed neuro-computing techniques to identify the optimum ionic configuration for all crystal structures, saving ∼88% of the computational time. Next, molecular scale simulations were performed to study the material properties. Molecular dynamics (MD) modeling findings suggest that the relative volume expansion between the fully charged and discharged states of the battery can be reduced by ∼1.9% to ∼2.25%, indicating an improvement in the life of the cathode material by several hundreds of cycles. Findings from both QM and CMD simulations suggest that for these novel engineered materials, electro-chemo-mechanical properties, such as ionic mobility, chemical diffusion coefficient and elasticity, improved. Furthermore, CMD simulations showed that the inter-ionic space between doped metal ions and oxygen is smaller compared to the spacing between Mn3+-O2- in the original LMO spinel, indicating an improvement in the material's structural strength along with the total number of the discharge cycle. Finally, macro scale computational modelling results show that chances of thermal runaway can be reduced significantly for some of the co-doped structures since the intercalation induced maximum stress is lower.
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Affiliation(s)
- Ramavtar Tyagi
- Mechanical Engineering, McMaster University, Hamilton, Canada.
| | - Seshasai Srinivasan
- Mechanical Engineering, McMaster University, Hamilton, Canada. .,W Booth School of Engineering Practice and Technology, McMaster University, Hamilton, ON, Canada
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4
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Tyagi R, Lanjan A, Srinivasan S. Co‐doping Strategies to Improve the Electrochemical Properties of LixMn2O4 Cathodes for Li‐Ion Batteries. ChemElectroChem 2021. [DOI: 10.1002/celc.202101626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | | | - Seshasai Srinivasan
- McMaster University Faculty of Engineering School of Engineering Practice and Technology 1280 Main st west L8S4L8 Hamilton CANADA
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Locker S, Goyal S, McKenzie ME, Sundaram SK, Ungaro C. Laser-induced structural modification in calcium aluminosilicate glasses using molecular dynamic simulations. Sci Rep 2021; 11:9519. [PMID: 33947885 PMCID: PMC8096823 DOI: 10.1038/s41598-021-88686-7] [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: 01/22/2021] [Accepted: 04/09/2021] [Indexed: 11/27/2022] Open
Abstract
Glass structures of multicomponent oxide systems (CaO–Al2O3–SiO2) are studied using a simulated pulsed laser with molecular dynamics. The short- and intermediate-range order structures revealed a direct correlation between the transformation of Al(IV) to Al(V), regions of increased density following laser processing, inherent reduction in the average T–O–T (T = Al, Si) angle, and associated elongation of the T–O bonding distance. Variable laser pulse energies were simulated across calcium aluminosilicate glasses with high silica content (50–80%) to identify densification trends attributed to composition and laser energy. High-intensity pulsed laser effects on fictive temperature and shockwave promotion are discussed in detail for their role in glass densification. Laser-induced structural changes are found to be highly dependent on pulse energy and glass chemistry.
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Affiliation(s)
- Sean Locker
- Kazuo Inamori School of Engineering, The New York State College of Ceramics, Ultrafast Materials Science and Engineering Laboratory (U-Lab), Alfred University, Alfred, NY, 14802, USA.
| | - Sushmit Goyal
- Corning Incorporated, Science and Technology Division, Corning, NY, 14831, USA
| | - Matthew E McKenzie
- Corning Incorporated, Science and Technology Division, Corning, NY, 14831, USA
| | - S K Sundaram
- Kazuo Inamori School of Engineering, The New York State College of Ceramics, Ultrafast Materials Science and Engineering Laboratory (U-Lab), Alfred University, Alfred, NY, 14802, USA
| | - Craig Ungaro
- Corning Incorporated, Science and Technology Division, Corning, NY, 14831, USA
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Lyngdoh GA, Kumar R, Krishnan NMA, Das S. Realistic atomic structure of fly ash-based geopolymer gels: Insights from molecular dynamics simulations. J Chem Phys 2019. [DOI: 10.1063/1.5121519] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Gideon A. Lyngdoh
- Department of Civil and Environmental Engineering, University of Rhode Island, Kingston, Rhode Island 02881, USA
| | - Rajesh Kumar
- Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - N. M. Anoop Krishnan
- Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Sumanta Das
- Department of Civil and Environmental Engineering, University of Rhode Island, Kingston, Rhode Island 02881, USA
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7
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Dholabhai PP, Uberuaga BP. Beyond Coherent Oxide Heterostructures: Atomic‐Scale Structure of Misfit Dislocations. ADVANCED THEORY AND SIMULATIONS 2019. [DOI: 10.1002/adts.201900078] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Pratik P. Dholabhai
- School of Physics and Astronomy Rochester Institute of Technology Rochester NY 14623 USA
| | - Blas P. Uberuaga
- Materials Science and Technology Division Los Alamos National Laboratory Los Alamos NM 87545 USA
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Ganisetti S, Gaddam A, Kumar R, Balaji S, Mather GC, Pascual MJ, Fabian M, Siegel R, Senker J, Kharton VV, Guénolé J, Krishnan NMA, Ferreira JMF, Allu AR. Elucidating the formation of Al–NBO bonds, Al–O–Al linkages and clusters in alkaline-earth aluminosilicate glasses based on molecular dynamics simulations. Phys Chem Chem Phys 2019; 21:23966-23977. [DOI: 10.1039/c9cp04332b] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Exploring the reasons for the initiation of Al–O–Al bond formation in alkali-earth alumino silicate glasses is a key topic in the glass-science community.
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Affiliation(s)
- Sudheer Ganisetti
- Department of Materials Science and Engineering
- Institute I
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Anuraag Gaddam
- Department of Materials and Ceramic Engineering
- CICECO
- University of Aveiro
- 3810–193 Aveiro
- Portugal
| | - Rajesh Kumar
- Department of Civil Engineering
- Indian Institute of Technology Delhi
- India 110016
| | - Sathravada Balaji
- Glass Division
- CSIR-Central Glass and Ceramic Research Institute
- Kolkata
- India
| | | | | | - Margit Fabian
- Centre for Energy Research
- Hungarian Academy of Sciences
- Hungary
| | - Renée Siegel
- Inorganic Chemistry III
- University of Bayreuth
- 95440 Bayreuth
- Germany
| | - Jürgen Senker
- Inorganic Chemistry III
- University of Bayreuth
- 95440 Bayreuth
- Germany
| | | | - Julien Guénolé
- Institute of Physical Metallurgy and Materials Physics
- RWTH Aachen University
- 52056 Aachen
- Germany
| | | | - José M. F. Ferreira
- Department of Civil Engineering
- Indian Institute of Technology Delhi
- India 110016
| | - Amarnath R. Allu
- Glass Division
- CSIR-Central Glass and Ceramic Research Institute
- Kolkata
- India
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9
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Charpentier T, Okhotnikov K, Novikov AN, Hennet L, Fischer HE, Neuville DR, Florian P. Structure of Strontium Aluminosilicate Glasses from Molecular Dynamics Simulation, Neutron Diffraction, and Nuclear Magnetic Resonance Studies. J Phys Chem B 2018; 122:9567-9583. [PMID: 30222349 DOI: 10.1021/acs.jpcb.8b05721] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The structure of strontium glasses with the composition (SiO2)1-2 x(Al2O3) x(SrO) x ( R = [SrO]/[Al2O3] = 1) and (SiO2)1-4 x(Al2O3) x(SrO)3 x ( R = 3) has been explored experimentally over both short- and intermediate-length scales using neutron diffraction, 27Al and 29Si nuclear magnetic resonance, and classical molecular dynamics simulations in model systems containing around 10 000 atoms. We aim at understanding the structural role of aluminum and strontium as a function of the chemical composition of these glasses. The short- and medium-range structure such as aluminum coordination, bond angle distribution, Q( n) distribution, and oxygen speciation have been systematically studied. Two potential forms of the repulsive short-range interactions have been investigated, namely, the Buckingham and Morse forms. The comparison of these forms allows us to derive general trends independent of the particular choice of the potential form. In both cases, it is found that aluminum ions are mainly fourfold coordinated and mix with the silicon network favoring the Al/Si mixing in terms of Al-O-Si linkages. For the R = 1 glass series, despite the full charge compensation ([SrO] = [Al2O3]), a small fraction of fivefold aluminum is observed both experimentally and in MD simulations, whereas the concentration of sixfold aluminum is negligible. MD shows that the fivefold aluminum units AlO5 preferentially adopt a small ring configuration and link to tricoordinated oxygen atoms whose population increases with the aluminum content and are mainly found in OAl3 and OAl2Si configurations. The modeled Sr speciation mainly involves SrO7 and SrO8 polyhedra, giving a range of average Sr2+ coordination numbers between 7 and 8 slightly dependent on the short-range repulsive potential form. A detailed statistical analysis of T-O-T' (T, T' = Al,Si), accounting for the population of the various oxygen speciations, reveals that both potentials predict a nearly identical Al/Si mixing.
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Affiliation(s)
- Thibault Charpentier
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay , 91191 Gif-sur-Yvette Cedex , France
| | - Kirill Okhotnikov
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay , 91191 Gif-sur-Yvette Cedex , France
| | | | - Louis Hennet
- CEMHTI UPR3079 CNRS, Univ. Orléans , F-45071 Orléans , France
| | | | - Daniel R Neuville
- IPGP UMR7154 CNRS, Géomatériaux, Paris Sorbonne Cité , 75005 Paris , France
| | - Pierre Florian
- CEMHTI UPR3079 CNRS, Univ. Orléans , F-45071 Orléans , France
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Dive A, Benmore C, Wilding M, Martin SW, Beckman S, Banerjee S. Molecular Dynamics Modeling of the Structure and Na+-Ion Transport in Na2S + SiS2 Glassy Electrolytes. J Phys Chem B 2018; 122:7597-7608. [DOI: 10.1021/acs.jpcb.8b04353] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Dive
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920, United States
| | - C. Benmore
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - M. Wilding
- Department of Chemistry, University College London, London WC1E 6BT, United Kingdom
| | - S. W. Martin
- Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - S. Beckman
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920, United States
| | - S. Banerjee
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920, United States
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11
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Jaworski A, Stevensson B, Edén M. Direct 17O NMR experimental evidence for Al–NBO bonds in Si-rich and highly polymerized aluminosilicate glasses. Phys Chem Chem Phys 2015; 17:18269-72. [DOI: 10.1039/c5cp02985f] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Double-resonance 17O{27Al} NMR unambiguously evidences Al–NBO bonds in rare-earth aluminosilicate glasses.
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Affiliation(s)
- Aleksander Jaworski
- Physical Chemistry Division
- Department of Materials and Environmental Chemistry
- Arrhenius Laboratory
- Stockholm University
- SE-106 91 Stockholm
| | - Baltzar Stevensson
- Physical Chemistry Division
- Department of Materials and Environmental Chemistry
- Arrhenius Laboratory
- Stockholm University
- SE-106 91 Stockholm
| | - Mattias Edén
- Physical Chemistry Division
- Department of Materials and Environmental Chemistry
- Arrhenius Laboratory
- Stockholm University
- SE-106 91 Stockholm
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