1
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Yan K, Lu X, Zhang R, Xiong J, Qiao Y, Li X, Yu Z. Molecular Diffusion in Nanoreactors' Pore Channel System: Measurement Techniques, Structural Regulation, and Catalytic Effects. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2304008. [PMID: 37632316 DOI: 10.1002/smll.202304008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/28/2023] [Indexed: 08/27/2023]
Abstract
Nanoreactors, as a new class of materials with highly enriched and ordered pore channel structures, can achieve special catalytic effects by precisely identifying and controlling the molecular diffusion behavior within the ordered pore channel system. Nanoreactors-driven molecular diffusion within the ordered pore channels can be highly dependent on the local microenvironment in the nanoreactors' pore channel system. Although the diffusion process of molecules within the ordered pore channels of nanoreactors is crucial for the regulation of catalytic behaviors, it has not yet been as clearly elucidated as it deserves to be in this study. In this review, fundamental theory and measurement techniques for molecular diffusion in the pore channel system of nanoreactors are presented, structural regulation strategies of pore channel parameters for controlling molecular diffusion are discussed, and the effects of molecular diffusion in the pore channel system on catalytic reactivity and selectivity are further analyzed. This article attempts to further develop the underlying theory of molecular diffusion within the theoretical framework of nanoreactor-driven catalysis, and the proposed perspectives may contribute to the rational design of advanced catalytic materials and the precise control of complex catalytic kinetics.
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Affiliation(s)
- Kai Yan
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China
| | - Xuebin Lu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China
- School of Ecology and Environment, Tibet University, Lhasa, 850000, P. R. China
| | - Rui Zhang
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, 300384, P. R. China
| | - Jian Xiong
- School of Ecology and Environment, Tibet University, Lhasa, 850000, P. R. China
| | - Yina Qiao
- School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, P. R. China
| | - Xiaoyun Li
- School of Agriculture, Sun Yat-sen University, Guangdong, 510275, P. R. China
| | - Zhihao Yu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China
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2
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Merryweather AJ, Jacquet Q, Emge SP, Schnedermann C, Rao A, Grey CP. Operando monitoring of single-particle kinetic state-of-charge heterogeneities and cracking in high-rate Li-ion anodes. NATURE MATERIALS 2022; 21:1306-1313. [PMID: 35970962 DOI: 10.1038/s41563-022-01324-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
To rationalize and improve the performance of newly developed high-rate battery electrode materials, it is crucial to understand the ion intercalation and degradation mechanisms occurring during realistic battery operation. Here we apply a laboratory-based operando optical scattering microscopy method to study micrometre-sized rod-like particles of the anode material Nb14W3O44 during high-rate cycling. We directly visualize elongation of the particles, which, by comparison with ensemble X-ray diffraction, allows us to determine changes in the state of charge of individual particles. A continuous change in scattering intensity with state of charge enables the observation of non-equilibrium kinetic phase separations within individual particles. Phase field modelling (informed by pulsed-field-gradient nuclear magnetic resonance and electrochemical experiments) supports the kinetic origin of this separation, which arises from the state-of-charge dependence of the Li-ion diffusion coefficient. The non-equilibrium phase separations lead to particle cracking at high rates of delithiation, particularly in longer particles, with some of the resulting fragments becoming electrically disconnected on subsequent cycling. These results demonstrate the power of optical scattering microscopy to track rapid non-equilibrium processes that would be inaccessible with established characterization techniques.
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Affiliation(s)
- Alice J Merryweather
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
- The Faraday Institution, Didcot, UK
| | - Quentin Jacquet
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Steffen P Emge
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Christoph Schnedermann
- Cavendish Laboratory, University of Cambridge, Cambridge, UK.
- The Faraday Institution, Didcot, UK.
| | - Akshay Rao
- Cavendish Laboratory, University of Cambridge, Cambridge, UK.
- The Faraday Institution, Didcot, UK.
| | - Clare P Grey
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK.
- The Faraday Institution, Didcot, UK.
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3
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Yang K, Sadeghi Pouya E, Liu L, Li M, Yang X, Robinson N, May EF, Johns ML. Low‐Field NMR Relaxation Analysis of High‐Pressure Ethane Adsorption in Mesoporous Silicas. Chemphyschem 2022; 23:e202100794. [DOI: 10.1002/cphc.202100794] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/20/2021] [Indexed: 12/11/2022]
Affiliation(s)
- Kaishuo Yang
- Department of Chemical Engineering The University of Western Australia 35 Stirling Highway (M050) Perth WA 6009 Australia
| | - Ehsan Sadeghi Pouya
- Department of Chemical Engineering The University of Western Australia 35 Stirling Highway (M050) Perth WA 6009 Australia
| | - Libin Liu
- Department of Chemical Engineering The University of Western Australia 35 Stirling Highway (M050) Perth WA 6009 Australia
| | - Ming Li
- Department of Chemical Engineering The University of Western Australia 35 Stirling Highway (M050) Perth WA 6009 Australia
| | - Xiaoxian Yang
- Department of Chemical Engineering The University of Western Australia 35 Stirling Highway (M050) Perth WA 6009 Australia
| | - Neil Robinson
- Department of Chemical Engineering The University of Western Australia 35 Stirling Highway (M050) Perth WA 6009 Australia
| | - Eric F. May
- Department of Chemical Engineering The University of Western Australia 35 Stirling Highway (M050) Perth WA 6009 Australia
| | - Michael L. Johns
- Department of Chemical Engineering The University of Western Australia 35 Stirling Highway (M050) Perth WA 6009 Australia
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Hexagonal Mesoporous Silica for carbon capture: Unrevealing CO2 microscopic dynamics by Nuclear Magnetic Resonance. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2021.101809] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Steinrücken E, Wissel T, Brodrecht M, Breitzke H, Regentin J, Buntkowsky G, Vogel M. 2H NMR study on temperature-dependent water dynamics in amino-acid functionalized silica nanopores. J Chem Phys 2021; 154:114702. [PMID: 33752372 DOI: 10.1063/5.0044141] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We prepare various amino-acid functionalized silica pores with diameters of ∼6 nm and study the temperature-dependent reorientation dynamics of water in these confinements. Specifically, we link basic Lys, neutral Ala, and acidic Glu to the inner surfaces and combine 2H nuclear magnetic resonance spin-lattice relaxation and line shape analyses to disentangle the rotational motions of the surfaces groups and the crystalline and liquid water fractions coexisting below partial freezing. Unlike the crystalline phase, the liquid phase shows reorientation dynamics, which strongly depends on the chemistry of the inner surfaces. The water reorientation is slowest for the Lys functionalization, followed by Ala and Glu and, finally, the native silica pores. In total, the rotational correlation times of water at the different surfaces vary by about two orders of magnitude, where this span is largely independent of the temperature in the range ∼200-250 K.
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Affiliation(s)
- Elisa Steinrücken
- Institute for Condensed Matter Physics, Technische Universität Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany
| | - Till Wissel
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 8, 64287 Darmstadt, Germany
| | - Martin Brodrecht
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 8, 64287 Darmstadt, Germany
| | - Hergen Breitzke
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 8, 64287 Darmstadt, Germany
| | - Julia Regentin
- Institute for Condensed Matter Physics, Technische Universität Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany
| | - Gerd Buntkowsky
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 8, 64287 Darmstadt, Germany
| | - Michael Vogel
- Institute for Condensed Matter Physics, Technische Universität Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany
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6
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Torayev A, Engelke S, Su Z, Marbella LE, De Andrade V, Demortière A, Magusin PCMM, Merlet C, Franco AA, Grey CP. Probing and Interpreting the Porosity and Tortuosity Evolution of Li-O 2 Cathodes on Discharge through a Combined Experimental and Theoretical Approach. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2021; 125:4955-4967. [PMID: 33763164 PMCID: PMC7976606 DOI: 10.1021/acs.jpcc.0c10417] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/10/2021] [Indexed: 06/12/2023]
Abstract
Li-O2 batteries offer a high theoretical discharge capacity due to the formation of light discharged species such as Li2O2, which fill the porous positive electrode. However, in practice, it is challenging to reach the theoretical capacity and completely utilize the full electrode pore volume during discharge. With the formation of discharge products, the porous medium evolves, and the porosity and tortuosity factor of the positive electrode are altered through shrinkage and clogging of pores. A pore shrinks as solid discharge products accumulate, the pore clogging when it is filled (or when access is blocked). In this study, we investigate the structural evolution of the positive electrode through a combination of experimental and computational techniques. Pulsed field gradient nuclear magnetic resonance results show that the electrode tortuosity factor changes much faster than suggested by the Bruggeman relation (an equation that empirically links the tortuosity factor to the porosity) and that the electrolyte solvent affects the tortuosity factor evolution. The latter is ascribed to the different abilities of solvents to dissolve reaction intermediates, which leads to different discharge product particle sizes: on discharging using 0.5 M LiTFSI in dimethoxyethane, the tortuosity factor increases much faster than for discharging in 0.5 M LiTFSI in tetraglyme. The correlation between a discharge product size and tortuosity factor is studied using a pore network model, which shows that larger discharge products generate more pore clogging. The Knudsen diffusion effect, where collisions of diffusing molecules with pore walls reduce the effective diffusion coefficients, is investigated using a kinetic Monte Carlo model and is found to have an insignificant impact on the effective diffusion coefficient for molecules in pores with diameters above 5 nm, i.e., most of the pores present in the materials investigated here. As a consequence, pore clogging is thought to be the main origin of tortuosity factor evolution.
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Affiliation(s)
- Amangeldi Torayev
- Laboratoire
de Réactivité et Chimie des Solides (LRCS), UMR CNRS
7314, Université de Picardie Jules Verne, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
- ALISTORE-European
Research Institute, FR CNRS 3104, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
| | - Simon Engelke
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
- Cambridge
Graphene Centre, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, U.K.
| | - Zeliang Su
- Laboratoire
de Réactivité et Chimie des Solides (LRCS), UMR CNRS
7314, Université de Picardie Jules Verne, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
- Réseau
sur le Stockage Electrochimique de l’Energie (RS2E), FR CNRS
3459, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
| | - Lauren E. Marbella
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
- Department
of Chemical Engineering, Columbia University, 500 W 120th St, New York, New York 10027, United States
| | - Vincent De Andrade
- X-Ray
Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont 60439, United States
| | - Arnaud Demortière
- Laboratoire
de Réactivité et Chimie des Solides (LRCS), UMR CNRS
7314, Université de Picardie Jules Verne, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
- ALISTORE-European
Research Institute, FR CNRS 3104, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
- Réseau
sur le Stockage Electrochimique de l’Energie (RS2E), FR CNRS
3459, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
| | - Pieter C. M. M. Magusin
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
- ALISTORE-European
Research Institute, FR CNRS 3104, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
| | - Céline Merlet
- ALISTORE-European
Research Institute, FR CNRS 3104, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
- Réseau
sur le Stockage Electrochimique de l’Energie (RS2E), FR CNRS
3459, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
- CIRIMAT,
Université de Toulouse, CNRS, Bât. CIRIMAT, 118, route de Narbonne, Toulouse cedex 9 31062, France
| | - Alejandro A. Franco
- Laboratoire
de Réactivité et Chimie des Solides (LRCS), UMR CNRS
7314, Université de Picardie Jules Verne, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
- ALISTORE-European
Research Institute, FR CNRS 3104, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
- Réseau
sur le Stockage Electrochimique de l’Energie (RS2E), FR CNRS
3459, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
- Institut
Universitaire de France, 103 Boulevard Saint-Michel, Paris 75005, France
| | - Clare P. Grey
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
- ALISTORE-European
Research Institute, FR CNRS 3104, Hub de l’Energie, 15 Rue Baudelocque, Amiens 80039, France
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Abstract
AbstractLabeling in diffusion measurements by pulsed field gradient (PFG) NMR is based on the observation of the phase of nuclear spins acquired in a constant magnetic field with purposefully superimposed field gradients. This labeling does in no way affect microdynamics and provides information about the probability distribution of molecular displacements as a function of time. An introduction of the measuring principle is followed by a detailed description of the ranges of measurements and their limitation. Particular emphasis is given to an explanation of possible pitfalls in the measurements and the ways to circumvent them. Showcases presented for illustrating the wealth of information provided by PFG NMR include a survey on the various patterns of concentration dependence of intra-particle diffusion and examples of transport inhibition by additional transport resistances within the nanoporous particles and on their external surface. The latter information is attained by combination with the outcome of tracer exchange experiments, which are shown to become possible via a special formalism of PFG NMR data analysis. Further evidence provided by PFG NMR concerns diffusion enhancement in pore hierarchies, diffusion anisotropy and the impact of diffusion on chemical conversion in porous catalysts. A compilation of the specifics of PFG NMR and of the parallels with other measurement techniques concludes the paper.
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8
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High-temperature and high-pressure NMR investigations of low viscous fluids confined in mesoporous systems. Z PHYS CHEM 2020. [DOI: 10.1515/zpch-2019-1510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this contribution, the relaxation and diffusional behaviors of low viscous fluids, water and methanol confined into mesoporous silica and controlled size pore glass were investigated. The engineered porous systems are relevant to geologically important subsurface energy materials. The engineered porous proxies were characterized by Brunauer–Emmett–Teller (BET) surface analyzer, nuclear magnetic resonance (NMR) spectroscopy, and electron microscopy (EM) to determine surface area, pore-wall protonation and morphology of these materials, respectively. The confined behavior of the low viscous fluids was studied by varying pore diameter, fluid-to-solid ratio, temperature, and pressure, and then compared to bulk liquid state. Both relaxation and diffusion behaviors for the confined fluids showed increasing deviation from pure bulk fluids as the fluid-to-solid ratio was decreased, and surface-to-volume ratio (S/V) was varied. Variable pressure deuteron NMR relaxation of confined D2O and confined methanol, deuterated at the hydroxyl or methyl positions, were performed to exploit the sensitivity of the deuteron quadrupole moment to molecular rotation. The methanol results demonstrated greater pressure dependence than those for water only in bulk. The deviations from bulk liquid behavior arise from different reasons such as confinement and the interactions between confined fluid and the nano-pore wall. The results of the present report give insight into the behavior of low viscosity fluid in nano-confined geometries under different state conditions.
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9
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Liu T, Gautam S, Cole DR, Patankar S, Tomasko D, Zhou W, Rother G. Structure and dynamics of ethane confined in silica nanopores in the presence of CO 2. J Chem Phys 2020; 152:084707. [PMID: 32113366 PMCID: PMC7929619 DOI: 10.1063/1.5134451] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Fundamental understanding of the subcritical/supercritical behavior of key hydrocarbon species inside nano-porous matrices at elevated pressure and temperature is less developed compared to bulk fluids, but this knowledge is of great importance for chemical and energy engineering industries. This study explores in detail the structure and dynamics of ethane (C2H6) fluid confined in silica nanopores, with a focus on the effects of pressure and different ratios of C2H6 and CO2 at non-ambient temperature. Quasi-elastic neutron scattering (QENS) experiments were carried out for the pure C2H6, C2H6:CO2 = 3:1, and 1:3 mixed fluids confined in 4-nm cylindrical silica pores at three different pressures (30 bars, 65 bars, and 100 bars) at 323 K. Two Lorentzian functions were required to fit the spectra, corresponding to fast and slow translational motions. No localized motions (rotations and vibrations) were detected. Higher pressures resulted in hindrances of the diffusivity of C2H6 molecules in all systems investigated. Pore size was found to be an important factor, i.e., the dynamics of confined C2H6 is more restricted in smaller pores compared to the larger pores used in previous studies. Molecular dynamics simulations were performed to complement the QENS experiment at 65 bars, providing supportive structure information and comparable dynamic information. The simulations indicate that CO2 molecules are more strongly attracted to the pore surface compared to C2H6. The C2H6 molecules interacting with or near the pore surface form a dense first layer (L1) close to the pore surface and a second less dense layer (L2) extending into the pore center. Both the experiments and simulations revealed the role that CO2 molecules play in enhancing C2H6 diffusion ("molecular lubrication") at high CO2:C2H6 ratios. The energy scales of the two dynamic components, fast and slow, quantified by both techniques, are in very good agreement. Herein, the simulations identified the fast component as the main contributor to the dynamics. Molecule motions in the L2 region are mostly responsible for the dynamics (fast and slow) that can be detected by the instrument.
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Affiliation(s)
- Tingting Liu
- School of Earth Sciences, The Ohio State University, 125 South Oval Mall, Columbus, Ohio 43210, USA
| | - Siddharth Gautam
- School of Earth Sciences, The Ohio State University, 125 South Oval Mall, Columbus, Ohio 43210, USA
| | - David R. Cole
- School of Earth Sciences, The Ohio State University, 125 South Oval Mall, Columbus, Ohio 43210, USA
| | - Sumant Patankar
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W Woodruff Ave., Columbus, Ohio 43210, USA
| | - David Tomasko
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W Woodruff Ave., Columbus, Ohio 43210, USA
| | - Wei Zhou
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Gernot Rother
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
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10
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Confined water-mediated high proton conduction in hydrophobic channel of a synthetic nanotube. Nat Commun 2020; 11:843. [PMID: 32071299 PMCID: PMC7029035 DOI: 10.1038/s41467-020-14627-z] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 01/21/2020] [Indexed: 11/10/2022] Open
Abstract
Water confined within one-dimensional (1D) hydrophobic nanochannels has attracted significant interest due to its unusual structure and dynamic properties. As a representative system, water-filled carbon nanotubes (CNTs) are generally studied, but direct observation of the crystal structure and proton transport is difficult for CNTs due to their poor crystallinity and high electron conduction. Here, we report the direct observation of a unique water-cluster structure and high proton conduction realized in a metal-organic nanotube, [Pt(dach)(bpy)Br]4(SO4)4·32H2O (dach: (1R, 2R)-(–)-1,2-diaminocyclohexane; bpy: 4,4’-bipyridine). In the crystalline state, a hydrogen-bonded ice nanotube composed of water tetramers and octamers is found within the hydrophobic nanochannel. Single-crystal impedance measurements along the channel direction reveal a high proton conduction of 10−2 Scm−1. Moreover, fast proton diffusion and continuous liquid-to-solid transition are confirmed using solid-state 1H-NMR measurements. Our study provides valuable insight into the structural and dynamical properties of confined water within 1D hydrophobic nanochannels. Water confined in natural or synthetic hydrophobic nano-spaces behaves differently than in the bulk. Here the authors investigate water in hydrophobic synthetic 1D nanochannels revealing water clustering in tetramers and octamers and high proton conductivity, along with a continuous liquid to solid transition.
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11
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Weigler M, Winter E, Kresse B, Brodrecht M, Buntkowsky G, Vogel M. Static field gradient NMR studies of water diffusion in mesoporous silica. Phys Chem Chem Phys 2020; 22:13989-13998. [PMID: 32555921 DOI: 10.1039/d0cp01290d] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
NMR diffusometry is used to ascertain the pore-size dependent water diffusion in MCM-41 and SBA-15 silica over broad temperature ranges. Detailed analysis of 1H and 2H NMR stimulated-echo decays reveals that fast water motion through voids between different silica particles impairs such studies in the general case. However, water diffusion inside single pores is probed in the present approach, which applies high static field gradients to enhance the spatial resolution of the experiment and uses excess water in combination with subzero temperatures to embed the silica particles in an ice matrix and, thus, to suppress interparticle water motion. It is found that the diffusion of confined water slows down by almost two orders of magnitude when the pore diameter is reduced from 5.4 nm to 2.1 nm at weak cooling. In the narrower silica pores, the temperature dependence of the self-diffusion coefficient of water is well described by an Arrhenius law with an activation energy of Ea = 0.40 eV. The Arrhenius behavior extends over a broad temperature range of at least 207-270 K, providing evidence against a fragile-to-strong crossover in response to a proposed liquid-liquid phase transition near 225 K. In the wider silica pores, partial crystallization results in a discontinuous temperature dependence. Explicitly, the diffusion coefficients drop when cooling through the pore-size dependent melting temperatures Tm of confined water. This finding can be rationalized by the fact that water can explore the whole pore volumes above Tm, but is restricted to narrow interfacial layers sandwiched between silica walls and ice crystallites below this temperature. Comparing our findings for water diffusion with previous results for water reorientation, we find significantly different temperature dependencies, indicating that the Stokes-Einstein-Debye relation is not obeyed.
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Affiliation(s)
- Max Weigler
- Institut für Festkörperphysik, Technische Universität Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany.
| | - Edda Winter
- Institut für Festkörperphysik, Technische Universität Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany.
| | - Benjamin Kresse
- Institut für Festkörperphysik, Technische Universität Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany.
| | - Martin Brodrecht
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 8, 64287 Darmstadt, Germany
| | - Gerd Buntkowsky
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 8, 64287 Darmstadt, Germany
| | - Michael Vogel
- Institut für Festkörperphysik, Technische Universität Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany.
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12
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Zeng S, Xu S, Gao S, Gao M, Zhang W, Wei Y, Liu Z. Differentiating Diffusivity in Different Channels of ZSM‐5 Zeolite by Pulsed Field Gradient (PFG) NMR. ChemCatChem 2019. [DOI: 10.1002/cctc.201901689] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shu Zeng
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Shutao Xu
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Shushu Gao
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Mingbin Gao
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Wenna Zhang
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Yingxu Wei
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Zhongmin Liu
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
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Lundell H, Nilsson M, Dyrby TB, Parker GJM, Cristinacce PLH, Zhou FL, Topgaard D, Lasič S. Multidimensional diffusion MRI with spectrally modulated gradients reveals unprecedented microstructural detail. Sci Rep 2019; 9:9026. [PMID: 31227745 PMCID: PMC6588609 DOI: 10.1038/s41598-019-45235-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 06/04/2019] [Indexed: 12/11/2022] Open
Abstract
Characterization of porous media is essential in a wide range of biomedical and industrial applications. Microstructural features can be probed non-invasively by diffusion magnetic resonance imaging (dMRI). However, diffusion encoding in conventional dMRI may yield similar signatures for very different microstructures, which represents a significant limitation for disentangling individual microstructural features in heterogeneous materials. To solve this problem, we propose an augmented multidimensional diffusion encoding (MDE) framework, which unlocks a novel encoding dimension to assess time-dependent diffusion specific to structures with different microscopic anisotropies. Our approach relies on spectral analysis of complex but experimentally efficient MDE waveforms. Two independent contrasts to differentiate features such as cell shape and size can be generated directly by signal subtraction from only three types of measurements. Analytical calculations and simulations support our experimental observations. Proof-of-concept experiments were applied on samples with known and distinctly different microstructures. We further demonstrate substantially different contrasts in different tissue types of a post mortem brain. Our simultaneous assessment of restriction size and shape may be instrumental in studies of a wide range of porous materials, enable new insights into the microstructure of biological tissues or be of great value in diagnostics.
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Affiliation(s)
- H Lundell
- Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark.
| | - M Nilsson
- Clinical Sciences Lund, Radiology, Lund University, Lund, Sweden
| | - T B Dyrby
- Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
- Department of Applied Mathematics and Computer Science, Technical University of Denmark, Kongens Lyngby, Denmark
| | - G J M Parker
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, The University of Manchester, Manchester, M13 9PT, United Kingdom
- Bioxydyn Limited, Manchester, United Kingdom
| | - P L Hubbard Cristinacce
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, The University of Manchester, Manchester, M13 9PT, United Kingdom
| | - F-L Zhou
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, The University of Manchester, Manchester, M13 9PT, United Kingdom
| | - D Topgaard
- Division of Physical Chemistry, Department of Chemistry, Lund University, Lund, Sweden
| | - S Lasič
- Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
- Random Walk Imaging AB, Lund, Sweden
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14
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Engelke S, Marbella LE, Trease NM, De Volder M, Grey CP. Three-dimensional pulsed field gradient NMR measurements of self-diffusion in anisotropic materials for energy storage applications. Phys Chem Chem Phys 2019; 21:4538-4546. [PMID: 30735217 DOI: 10.1039/c8cp07776b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Anisotropic battery electrodes that allow enhanced diffusion through the thickness of the electrode can be engineered to improve the rate performance, but direct measurement of 3D diffusion in this pore structure is extremely challenging. To address this, we used 1H and 7Li pulsed field gradient (PFG) NMR to measure anisotropic diffusion in a model porous silicon substrate. We show that NMR spectroscopy can resolve solvent molecules and ions (here, in H2O, DMSO, and the battery electrolyte LIPF6:DC:EMC) in and outside of the pores of the Si substrate, allowing the diffusion coefficients of the ion/molecules in the two components to be individually determined. Exchange between ions/molecules inside and outside of the pores is observed with 1H 2D exchange spectroscopy (EXSY). The pore dimensions can extracted from the diffusivity of the in-pore component and the results are in reasonable agreement with the pore dimensions measured with electron microscopy. Better agreement is obtained for pore diameters; for pore length measurements, exchange between the in-pore and ex-pore solvents should be accounted for. These results suggest that PFG-NMR can serve as a non-destructive characterisation method for both in situ and ex situ analyses of materials ranging from complex battery and supercapacitor electrodes to catalyst supports and tissue scaffolds.
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Affiliation(s)
- S Engelke
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
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15
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Weigler M, Brodrecht M, Buntkowsky G, Vogel M. Reorientation of Deeply Cooled Water in Mesoporous Silica: NMR Studies of the Pore-Size Dependence. J Phys Chem B 2019; 123:2123-2134. [DOI: 10.1021/acs.jpcb.8b12204] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Weigler
- Institut für Festkörperphysik, Technische Universität Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany
| | - M. Brodrecht
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 8, 64287 Darmstadt, Germany
| | - G. Buntkowsky
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 8, 64287 Darmstadt, Germany
| | - M. Vogel
- Institut für Festkörperphysik, Technische Universität Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany
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16
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Affiliation(s)
- Ward H. Thompson
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, USA
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17
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Karaman DŞ, Sarparanta MP, Rosenholm JM, Airaksinen AJ. Multimodality Imaging of Silica and Silicon Materials In Vivo. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1703651. [PMID: 29388264 DOI: 10.1002/adma.201703651] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/15/2017] [Indexed: 05/29/2023]
Abstract
Recent progress in the development of silica- and silicon-based multimodality imaging nanoprobes has advanced their use in image-guided drug delivery, and the development of novel systems for nanotheranostic and diagnostic applications. As biocompatible and flexibly tunable materials, silica and silicon provide excellent platforms with high clinical potential in nanotheranostic and diagnostic probes with well-defined morphology and surface chemistry, yielding multifunctional properties. In vivo imaging is of great value in the exploration of methods for improving site-specific nanotherapeutic delivery by silica- and silicon-based drug-delivery systems. Multimodality approaches are essential for understanding the biological interactions of nanotherapeutics in the physiological environment in vivo. The aim here is to describe recent advances in the development of in vivo imaging tools based on nanostructured silica and silicon, and their applications in single and multimodality imaging.
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Affiliation(s)
- Didem Şen Karaman
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, BioCity, Tykistökatu 6A, FI, 20520, Turku, Finland
| | - Mirkka P Sarparanta
- Department of Chemistry-Radiochemistry, Faculty of Science, University of Helsinki, POB 55, FI-00014, University of Helsinki, Finland
| | - Jessica M Rosenholm
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, BioCity, Tykistökatu 6A, FI, 20520, Turku, Finland
| | - Anu J Airaksinen
- Department of Chemistry-Radiochemistry, Faculty of Science, University of Helsinki, POB 55, FI-00014, University of Helsinki, Finland
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18
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Nilsson M, Larsson J, Lundberg D, Szczepankiewicz F, Witzel T, Westin C, Bryskhe K, Topgaard D. Liquid crystal phantom for validation of microscopic diffusion anisotropy measurements on clinical MRI systems. Magn Reson Med 2018; 79:1817-1828. [PMID: 28686785 PMCID: PMC5756689 DOI: 10.1002/mrm.26814] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 05/21/2017] [Accepted: 06/08/2017] [Indexed: 01/05/2023]
Abstract
PURPOSE To develop a phantom for validating MRI pulse sequences and data processing methods to quantify microscopic diffusion anisotropy in the human brain. METHODS Using a liquid crystal consisting of water, detergent, and hydrocarbon, we designed a 0.5-L spherical phantom showing the theoretically highest possible degree of microscopic anisotropy. Data were acquired on the Connectome scanner using echo-planar imaging signal readout and diffusion encoding with axisymmetric b-tensors of varying magnitude, anisotropy, and orientation. The mean diffusivity, fractional anisotropy (FA), and microscopic FA (µFA) parameters were estimated. RESULTS The phantom was observed to have values of mean diffusivity similar to brain tissue, and relaxation times compatible with echo-planar imaging echo times on the order of 100 ms. The estimated values of µFA were at the theoretical maximum of 1.0, whereas the values of FA spanned the interval from 0.0 to 0.8 as a result of varying orientational order of the anisotropic domains within each voxel. CONCLUSIONS The proposed phantom can be manufactured by mixing three widely available chemicals in volumes comparable to a human head. The acquired data are in excellent agreement with theoretical predictions, showing that the phantom is ideal for validating methods for measuring microscopic diffusion anisotropy on clinical MRI systems. Magn Reson Med 79:1817-1828, 2018. © 2017 The Authors Magnetic Resonance in Medicine published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance in Medicine. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
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Affiliation(s)
- Markus Nilsson
- Diagnostic Radiology, Department of Clinical SciencesLund UniversityLundSweden
| | - Johan Larsson
- Physical Chemistry, Department of ChemistryLund UniversityLundSweden
| | | | | | - Thomas Witzel
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | | | | | - Daniel Topgaard
- Physical Chemistry, Department of ChemistryLund UniversityLundSweden
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Singh RK, Patel KD, Leong KW, Kim HW. Progress in Nanotheranostics Based on Mesoporous Silica Nanomaterial Platforms. ACS APPLIED MATERIALS & INTERFACES 2017; 9:10309-10337. [PMID: 28274115 DOI: 10.1021/acsami.6b16505] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Theranostics based on nanoparticles (NPs) is a promising paradigm in nanomedicine. Mesoporous silica nanoparticle (MSN)-based systems offer unique characteristics to enable multimodal imaging or simultaneous diagnosis and therapy. They include large surface area and volume, tunable pore size, functionalizable surface, and acceptable biological safety. Hybridization with other NPs and chemical modification can further potentiate the multifunctionality of MSN-based systems toward translation. Here, we update the recent progress on MSN-based systems for theranostic purposes. We discuss various synthetic approaches used to construct the theranostic platforms either via intrinsic chemistry or extrinsic combination. These include defect generation in the silica structure, encapsulation of diagnostic NPs within silica, their assembly on the silica surface, and direct conjugation of dye chemicals. Collectively, in vitro and in vivo results demonstrate that multimodal imaging capacities can be integrated with the therapeutic functions of these MSN systems for therapy. With further improvement in bioimaging sensitivity and targeting specificity, the multifunctional MSN-based theranostic systems will find many clinical applications in the near future.
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Affiliation(s)
- Rajendra K Singh
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University , Cheonan 330-714, South Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University , Cheonan 330-714, South Korea
| | - Kapil D Patel
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University , Cheonan 330-714, South Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University , Cheonan 330-714, South Korea
| | - Kam W Leong
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University , Cheonan 330-714, South Korea
- Department of Biomedical Engineering, Columbia University , New York, New York 10027, United States
| | - Hae-Won Kim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University , Cheonan 330-714, South Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University , Cheonan 330-714, South Korea
- Department of Biomaterials Science, College of Dentistry, Dankook University , Cheonan 330-714, South Korea
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20
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Ianuş A, Drobnjak I, Alexander DC. Model-based estimation of microscopic anisotropy using diffusion MRI: a simulation study. NMR IN BIOMEDICINE 2016; 29:672-685. [PMID: 27003223 DOI: 10.1002/nbm.3496] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 01/04/2016] [Accepted: 01/06/2016] [Indexed: 06/05/2023]
Abstract
Non-invasive estimation of cell size and shape is a key challenge in diffusion MRI. This article presents a model-based approach that provides independent estimates of pore size and eccentricity from diffusion MRI data. The technique uses a geometric model of finite cylinders with gamma-distributed radii to represent pores of various sizes and elongations. We consider both macroscopically isotropic substrates and substrates of semi-coherently oriented anisotropic pores and we use Monte Carlo simulations to generate synthetic data. We compare the sensitivity of single and double diffusion encoding (SDE and DDE) sequences to the size distribution and eccentricity, and further analyse different protocols of DDE sequences with parallel and/or perpendicular pairs of gradients. We show that explicitly accounting for size distribution is necessary for accurate microstructural parameter estimates, and a model that assumes a single size yields biased eccentricity values. We also find that SDE sequences support estimates, although DDE sequences with mixed parallel and perpendicular gradients enhance accuracy. In the case of macroscopically anisotropic substrates, this model-based approach can be extended to a rotationally invariant framework to provide features of pore shape (specifically eccentricity) in the presence of size distribution and orientation dispersion.
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Affiliation(s)
- Andrada Ianuş
- Center for Medical Image Computing, Department of Computer Science, University College London, UK
| | - Ivana Drobnjak
- Center for Medical Image Computing, Department of Computer Science, University College London, UK
| | - Daniel C Alexander
- Center for Medical Image Computing, Department of Computer Science, University College London, UK
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21
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de Almeida Martins JP, Topgaard D. Two-Dimensional Correlation of Isotropic and Directional Diffusion Using NMR. PHYSICAL REVIEW LETTERS 2016; 116:087601. [PMID: 26967442 DOI: 10.1103/physrevlett.116.087601] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Indexed: 05/12/2023]
Abstract
Diffusion nuclear magnetic resonance (NMR) is a powerful technique for studying porous media, but yields ambiguous results when the sample comprises multiple regions with different pore sizes, shapes, and orientations. Inspired by solid-state NMR techniques for correlating isotropic and anisotropic chemical shifts, we propose a diffusion NMR method to resolve said ambiguity. Numerical data inversion relies on sparse representation of the data in a basis of radial and axial diffusivities. Experiments are performed on a composite sample with a cell suspension and a liquid crystal.
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Affiliation(s)
| | - Daniel Topgaard
- Division of Physical Chemistry, Department of Chemistry, Lund University, 221 00 Lund, Sweden
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22
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Weiland E, Springuel-Huet MA, Nossov A, Guenneau F, Quoineaud AA, Gédéon A. Transport properties of catalyst supports studied by pulsed field gradient (PFG) and 2D exchange (EXSY) NMR spectroscopy. NEW J CHEM 2016. [DOI: 10.1039/c5nj02952j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2D-EXSY and PFG 129Xe NMR provide a powerful means for probing tortuosity and pore connectivity in bimodal alumina catalysts.
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Affiliation(s)
- Erika Weiland
- IFP Energies Nouvelles
- Rond-Point de l'échangeur de Solaize-BP3
- 69360 Solaize
- France
- Sorbonne Universités
| | - Marie-Anne Springuel-Huet
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS-UMR 7574
- Laboratoire de Chimie de la Matière Condensée de Paris
- Paris
| | - Andrei Nossov
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS-UMR 7574
- Laboratoire de Chimie de la Matière Condensée de Paris
- Paris
| | - Flavien Guenneau
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS-UMR 7574
- Laboratoire de Chimie de la Matière Condensée de Paris
- Paris
| | | | - Antoine Gédéon
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS-UMR 7574
- Laboratoire de Chimie de la Matière Condensée de Paris
- Paris
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23
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Şen Karaman D, Desai D, Zhang J, Tadayon S, Unal G, Teuho J, Sarfraz J, Smått JH, Gu H, Näreoja T, Rosenholm JM. Modulation of the structural properties of mesoporous silica nanoparticles to enhance the T1-weighted MR imaging capability. J Mater Chem B 2016; 4:1720-1732. [DOI: 10.1039/c5tb02371h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The contrast enchantment for Gd(iii) incorporated MSN based CAs is investigated by modulating the preparational and structural parameters.
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24
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Eriksson S, Lasič S, Nilsson M, Westin CF, Topgaard D. NMR diffusion-encoding with axial symmetry and variable anisotropy: Distinguishing between prolate and oblate microscopic diffusion tensors with unknown orientation distribution. J Chem Phys 2015; 142:104201. [PMID: 25770532 PMCID: PMC4359170 DOI: 10.1063/1.4913502] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Accepted: 02/12/2015] [Indexed: 11/14/2022] Open
Abstract
We introduce a nuclear magnetic resonance method for quantifying the shape of axially symmetric microscopic diffusion tensors in terms of a new diffusion anisotropy metric, DΔ, which has unique values for oblate, spherical, and prolate tensor shapes. The pulse sequence includes a series of equal-amplitude magnetic field gradient pulse pairs, the directions of which are tailored to give an axially symmetric diffusion-encoding tensor b with variable anisotropy bΔ. Averaging of data acquired for a range of orientations of the symmetry axis of the tensor b renders the method insensitive to the orientation distribution function of the microscopic diffusion tensors. Proof-of-principle experiments are performed on water in polydomain lyotropic liquid crystals with geometries that give rise to microscopic diffusion tensors with oblate, spherical, and prolate shapes. The method could be useful for characterizing the geometry of fluid-filled compartments in porous solids, soft matter, and biological tissues.
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Affiliation(s)
- Stefanie Eriksson
- Division of Physical Chemistry, Department of Chemistry, Lund University, Lund, Sweden
| | | | - Markus Nilsson
- Lund University Bioimaging Center, Lund University, Lund, Sweden
| | - Carl-Fredrik Westin
- Department of Radiology, BWH, Harvard Medical School, Boston, Massachusetts MA 02215, USA
| | - Daniel Topgaard
- Division of Physical Chemistry, Department of Chemistry, Lund University, Lund, Sweden
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25
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Liu X, Pan X, Zhang S, Han X, Bao X. Diffusion of water inside carbon nanotubes studied by pulsed field gradient NMR spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:8036-8045. [PMID: 24951088 DOI: 10.1021/la500913r] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Diffusion dynamics of guest molecules in nanopores has been studied intensively because diffusion is center on a number of research fields such as separation, drug delivery, chemical reactions, and sensing. In the present work, we report an experimental investigation of the self-diffusion of water inside carbon nanotube (CNT) channels using a pulsed field gradient (PFG) NMR method. The dispersion of CNTs homogeneously in water and cooling to temperatures below the melting point of bulk water allow us to probe the translational motion of confined water molecules. The results demonstrate that the self-diffusion coefficient of water in CNTs is highly dependent on the diffusion time and CNT diameter. In particular, the diffusivity of water in double-walled carbon nanotubes (DWNTs) with an average inner diameter of 2.3 ± 0.3 nm is twice that in multiwalled carbon nanotubes (MWNTs) with an average inner diameter of 6.7 ± 0.8 nm in the temperature range of 263-223 K. In addition, the effective self-diffusion coefficient in DWNTs is 1 order of magnitude higher than that reported for mesoporous silica materials with a similar pore size. The faster diffusivity of water in CNTs could be attributed to the ordered hydrogen bonds formed between water molecules within the confined channels of CNTs and the weak interaction between water and the CNT walls.
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Affiliation(s)
- Xin Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Zhongshan Road 457, Dalian 116023, PR China
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27
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Chen Y, Chen H, Shi J. In vivo bio-safety evaluations and diagnostic/therapeutic applications of chemically designed mesoporous silica nanoparticles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:3144-76. [PMID: 23681931 DOI: 10.1002/adma.201205292] [Citation(s) in RCA: 473] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2012] [Revised: 02/27/2013] [Indexed: 05/19/2023]
Abstract
The remarkable progress of nanotechnology and its application in biomedicine have greatly expanded the ranges and types of biomaterials from traditional organic material-based nanoparticles (NPs) to inorganic biomaterials or organic/inorganic hybrid nanocomposites due to the unprecedented advantages of the engineered inorganic material-based NPs. Colloidal mesoporous silica NPs (MSNs), one of the most representative and well-established inorganic materials, have been promoted into biology and medicine, and shifted from extensive in vitro research towards preliminary in vivo assays in small-animal disease models. In this comprehensive review, the recent progresses in chemical design and engineering of MSNs-based biomaterials for in vivo biomedical applications has been detailed and overviewed. Due to the intrinsic structural characteristics of elaborately designed MSNs such as large surface area, high pore volume and easy chemical functionalization, they have been extensively investigated for therapeutic, diagnostic and theranostic (concurrent diagnosis and therapy) purposes, especially in oncology. Systematic in vivo bio-safety evaluations of MSNs have revealed the evidences that the in vivo bio-behaviors of MSNs are strongly related to their preparation prodecures, particle sizes, geometries, surface chemistries, dosing parameters and even administration routes. In vivo pharmacokinetics and pharmacodynamics further demonstrated the effectiveness of MSNs as the passively and/or actively targeted drug delivery systems (DDSs) for cancer chemotherapy. Especially, the advance of nano-synthetic chemistry enables the production of composite MSNs for advanced in vivo therapeutic purposes such as gene delivery, stimuli-responsive drug release, photothermal therapy, photodynamic therapy, ultrasound therapy, or anti-bacteria in tissue engineering, or as the contrast agents for biological and diagnostic imaging. Additionally, the critical issues and potential challenges related to the chemical design/synthesis of MSNs-based "magic bullet" by advanced nano-synthetic chemistry and in vivo evaluation have been discussed to highlight the issues scientists face in promoting the translation of MSNs-based DDSs into clinical trials.
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Affiliation(s)
- Yu Chen
- State Key Laboratory of High Performance, Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-Xi Road, Shanghai 200050, P. R. China
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28
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Bernin D, Topgaard D. NMR diffusion and relaxation correlation methods: New insights in heterogeneous materials. Curr Opin Colloid Interface Sci 2013. [DOI: 10.1016/j.cocis.2013.03.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Walia J, Crone J, Liang J, Niknam M, Lemaire C, Terry Thompson R, Peemoeller H. Temperature and hydration dependence of proton MAS NMR spectra in MCM-41: model based on motion induced chemical shift averaging. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2013; 49-50:26-32. [PMID: 23266020 DOI: 10.1016/j.ssnmr.2012.11.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2012] [Revised: 11/12/2012] [Accepted: 11/19/2012] [Indexed: 06/01/2023]
Abstract
The proton MAS NMR spectra in MCM-41 at low hydration levels (less than hydration amounting to one water molecule per surface hydroxyl group) show complex proton resonance peak structures, with hydroxyl proton resonances seen in dry MCM-41 disappearing as water is introduced into the pores and new peaks appearing, representing water and hydrated silanol groups. Surface hydroxyl group-water molecule chemical exchange and chemical shift averaging brought about by a water molecule visiting different surface hydrogen bonding sites have been proposed as possible causes for the observed spectral changes. In this report a simple model based on chemical shift averaging, due to the making and breaking of hydrogen bonds as water molecules move on the MCM-41 surface, is shown to fully reproduce the NMR spectra, both as a function of hydration and temperature. Surface proton-water proton chemical exchange is not required in this model at low hydration levels.
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Affiliation(s)
- Jaspreet Walia
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
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30
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Kärger J, Valiullin R. Mass transfer in mesoporous materials: the benefit of microscopic diffusion measurement. Chem Soc Rev 2013; 42:4172-97. [DOI: 10.1039/c3cs35326e] [Citation(s) in RCA: 193] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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31
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Feil F, Cauda V, Bein T, Bräuchle C. Direct visualization of dye and oligonucleotide diffusion in silica filaments with collinear mesopores. NANO LETTERS 2012; 12:1354-1361. [PMID: 22195639 DOI: 10.1021/nl2039474] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The diffusion dynamics of terrylene diimide (TDI) dye molecules and dye-labeled double-strand DNA were studied in micrometer long silica filaments containing collinear, oriented mesopores using single molecule fluorescence microscopy. TDI was used as a stable and hydrophobic probe molecule for single molecule structural analysis. We used template-free mesoporous silica filaments with 4 nm pore diameter and chemical functionalization with one or two types of trialkoxysilane groups to enhance the affinity between the host system and the guest molecules. Insights about the mesoporous structure as well as the translational and orientational diffusion dynamics of the guest molecules observed along micrometer long trajectories could be obtained. Additionally, the stability of DNA oligomers (15 base pairs, bp, about 5.3 nm long) within the mesopores was examined, showing no degradation of the oligonucleotide upon incorporation into the mesopores. Diffusion of both guest molecules could be controlled by exposure to vapors of water or chloroform; the latter both induced a reversible on-off control of the translational movement of the molecules.
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Affiliation(s)
- Florian Feil
- Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU), Butenandtstrasse 11, 81377 Munich, Germany
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Chen Y, Chen H, Zhang S, Chen F, Sun S, He Q, Ma M, Wang X, Wu H, Zhang L, Zhang L, Shi J. Structure-property relationships in manganese oxide - mesoporous silica nanoparticles used for T1-weighted MRI and simultaneous anti-cancer drug delivery. Biomaterials 2012; 33:2388-98. [DOI: 10.1016/j.biomaterials.2011.11.086] [Citation(s) in RCA: 115] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Accepted: 11/28/2011] [Indexed: 01/06/2023]
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Shemesh N, Westin CF, Cohen Y. Magnetic resonance imaging by synergistic diffusion-diffraction patterns. PHYSICAL REVIEW LETTERS 2012; 108:058103. [PMID: 22400966 DOI: 10.1103/physrevlett.108.058103] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Indexed: 05/31/2023]
Abstract
Inferring on the geometry of an object from its frequency spectrum is highly appealing since the object could then be imaged noninvasively or from a distance (as famously put by Kac, "can one hear the shape of a drum?"). In nuclear magnetic resonance of porous systems, the shape of the drum is represented by the pore density function that bears all the information on the collective pore microstructure. So far, conventional magnetic resonance imaging (MRI) could only detect the pore autocorrelation function, which inherently obscures fine details on the pore structure. Here, for the first time, we report on a unique imaging mechanism arising from synergistic diffusion-diffractions that directly yields the pore density function. This mechanism offers substantially higher spatial resolution compared to conventional MRI while retaining all fine details on the collective pore morphology. Thus, using these unique synergistic diffusion-diffractions, the "shape of the drum" can be inferred.
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Affiliation(s)
- Noam Shemesh
- School of Chemistry, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel.
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34
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Wang Z, Gobet M, Sarou-Kanian V, Massiot D, Bessada C, Deschamps M. Lithium diffusion in lithium nitride by pulsed-field gradient NMR. Phys Chem Chem Phys 2012; 14:13535-8. [DOI: 10.1039/c2cp42391j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Ukmar T, Maver U, Planinšek O, Pintar A, Kaučič V, Godec A, Gaberšček M. Guest–host van der Waals interactions decisively affect the molecular transport in mesoporous media. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm13493k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Rosenstihl M, Vogel M. Static and pulsed field gradient nuclear magnetic resonance studies of water diffusion in protein matrices. J Chem Phys 2011; 135:164503. [DOI: 10.1063/1.3653943] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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37
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Kim T, Momin E, Choi J, Yuan K, Zaidi H, Kim J, Park M, Lee N, McMahon MT, Quinones-Hinojosa A, Bulte JWM, Hyeon T, Gilad AA. Mesoporous silica-coated hollow manganese oxide nanoparticles as positive T1 contrast agents for labeling and MRI tracking of adipose-derived mesenchymal stem cells. J Am Chem Soc 2011; 133:2955-61. [PMID: 21314118 PMCID: PMC3048840 DOI: 10.1021/ja1084095] [Citation(s) in RCA: 351] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Indexed: 02/07/2023]
Abstract
Mesoporous silica-coated hollow manganese oxide (HMnO@mSiO(2)) nanoparticles were developed as a novel T(1) magnetic resonance imaging (MRI) contrast agent. We hypothesized that the mesoporous structure of the nanoparticle shell enables optimal access of water molecules to the magnetic core, and consequently, an effective longitudinal (R(1)) relaxation enhancement of water protons, which value was measured to be 0.99 (mM(-1)s(-1)) at 11.7 T. Adipose-derived mesenchymal stem cells (MSCs) were efficiently labeled using electroporation, with much shorter T(1) values as compared to direct incubation without electroporation, which was also evidenced by signal enhancement on T(1)-weighted MR images in vitro. Intracranial grafting of HMnO@mSiO(2)-labeled MSCs enabled serial MR monitoring of cell transplants over 14 days. These novel nanoparticles may extend the arsenal of currently available nanoparticle MR contrast agents by providing positive contrast on T(1)-weighted images at high magnetic field strengths.
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Affiliation(s)
- Taeho Kim
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Cellular Imaging Section, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- National Creative Research Initiative Center for Oxide Nanocrystalline Materials, World Class University program of Chemical Convergence for Energy and Environment, and School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
| | - Eric Momin
- Department of Neurological Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Jonghoon Choi
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Cellular Imaging Section, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Kristy Yuan
- Department of Neurological Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Hasan Zaidi
- Department of Neurological Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Jaeyun Kim
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Cellular Imaging Section, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- National Creative Research Initiative Center for Oxide Nanocrystalline Materials, World Class University program of Chemical Convergence for Energy and Environment, and School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
| | - Mihyun Park
- National Creative Research Initiative Center for Oxide Nanocrystalline Materials, World Class University program of Chemical Convergence for Energy and Environment, and School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
| | - Nohyun Lee
- National Creative Research Initiative Center for Oxide Nanocrystalline Materials, World Class University program of Chemical Convergence for Energy and Environment, and School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
| | - Michael T. McMahon
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, Maryland 21205, United States
| | - Alfredo Quinones-Hinojosa
- Department of Neurological Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Jeff W. M. Bulte
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Cellular Imaging Section, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Taeghwan Hyeon
- National Creative Research Initiative Center for Oxide Nanocrystalline Materials, World Class University program of Chemical Convergence for Energy and Environment, and School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
| | - Assaf A. Gilad
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Cellular Imaging Section, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, Maryland 21205, United States
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38
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Valiullin R, Kärger J. The Impact of Mesopores on Mass Transfer in Nanoporous Materials: Evidence of Diffusion Measurement by NMR. CHEM-ING-TECH 2011. [DOI: 10.1002/cite.201000208] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ulrich K, Galvosas P, Kärger J, Grinberg F, Vernimmen J, Meynen V, Cool P. Self-Assembly and Diffusion of Block Copolymer Templates in SBA-15 Nanochannels. J Phys Chem B 2010; 114:4223-9. [PMID: 20218587 DOI: 10.1021/jp907647n] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Konstantin Ulrich
- Institut für Experimentelle Physik I, Universität Leipzig, Linnéstrasse 5, 04103 Leipzig, Germany, Institute of Neuroscience and Medicine, Forschungszentrum Juelich GmbH, 52425 Juelich, Germany, Department of Chemistry, CDE, University of Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, Belgium, and MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, New Zealand
| | - Petrik Galvosas
- Institut für Experimentelle Physik I, Universität Leipzig, Linnéstrasse 5, 04103 Leipzig, Germany, Institute of Neuroscience and Medicine, Forschungszentrum Juelich GmbH, 52425 Juelich, Germany, Department of Chemistry, CDE, University of Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, Belgium, and MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, New Zealand
| | - Jörg Kärger
- Institut für Experimentelle Physik I, Universität Leipzig, Linnéstrasse 5, 04103 Leipzig, Germany, Institute of Neuroscience and Medicine, Forschungszentrum Juelich GmbH, 52425 Juelich, Germany, Department of Chemistry, CDE, University of Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, Belgium, and MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, New Zealand
| | - Farida Grinberg
- Institut für Experimentelle Physik I, Universität Leipzig, Linnéstrasse 5, 04103 Leipzig, Germany, Institute of Neuroscience and Medicine, Forschungszentrum Juelich GmbH, 52425 Juelich, Germany, Department of Chemistry, CDE, University of Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, Belgium, and MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, New Zealand
| | - Jarian Vernimmen
- Institut für Experimentelle Physik I, Universität Leipzig, Linnéstrasse 5, 04103 Leipzig, Germany, Institute of Neuroscience and Medicine, Forschungszentrum Juelich GmbH, 52425 Juelich, Germany, Department of Chemistry, CDE, University of Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, Belgium, and MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, New Zealand
| | - Vera Meynen
- Institut für Experimentelle Physik I, Universität Leipzig, Linnéstrasse 5, 04103 Leipzig, Germany, Institute of Neuroscience and Medicine, Forschungszentrum Juelich GmbH, 52425 Juelich, Germany, Department of Chemistry, CDE, University of Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, Belgium, and MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, New Zealand
| | - Pegie Cool
- Institut für Experimentelle Physik I, Universität Leipzig, Linnéstrasse 5, 04103 Leipzig, Germany, Institute of Neuroscience and Medicine, Forschungszentrum Juelich GmbH, 52425 Juelich, Germany, Department of Chemistry, CDE, University of Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, Belgium, and MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, New Zealand
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40
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Iacob C, Sangoro JR, Papadopoulos P, Schubert T, Naumov S, Valiullin R, Kärger J, Kremer F. Charge transport and diffusion of ionic liquids in nanoporous silica membranes. Phys Chem Chem Phys 2010; 12:13798-803. [DOI: 10.1039/c004546b] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Kärger J, Caro J, Cool P, Coppens MO, Jones D, Kapteijn F, Rodríguez-Reinoso F, Stöcker M, Theodorou D, Vansant EF, Weitkamp J. Benefit of Microscopic Diffusion Measurement for the Characterization of Nanoporous Materials. Chem Eng Technol 2009. [DOI: 10.1002/ceat.200900160] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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42
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Valiullin R, Kärger J, Gläser R. Correlating phase behaviour and diffusion in mesopores: perspectives revealed by pulsed field gradient NMR. Phys Chem Chem Phys 2009; 11:2833-53. [DOI: 10.1039/b822939b] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Ye F, Collinson MM, Higgins DA. What can be learned from single molecule spectroscopy? Applications to sol-gel-derived silica materials. Phys Chem Chem Phys 2008; 11:66-82. [PMID: 19081909 DOI: 10.1039/b812924j] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Single molecule spectroscopic methods are now being widely employed to probe the nanometer scale properties of sol-gel-derived silica materials. This article reviews a subset of the recent literature in this area and provides salient examples of the new information that can be obtained. The materials covered include inorganic and organically-modified silica, along with surfactant-templated mesoporous materials. Studies of molecule-matrix interactions based on ionic, hydrogen bonding and hydrophobic interactions are reviewed, highlighting the impacts of these interactions on mass transport phenomena. Quantitative investigations of molecular diffusion by single molecule tracking and fluorescence correlation spectroscopy are also covered, focusing on the characterization of anisotropic and hindered diffusion in mesoporous systems. Single molecule polarity studies are described and the new information that can be obtained from the resulting inhomogeneous distributions is discussed. Likewise, single molecule studies of silica acidity properties are reviewed, including observation of nanoscale buffering phenomena due to the chemistry of surface silanols. Finally, related single nanoparticle studies of macroporous silicas are also discussed.
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Affiliation(s)
- Fangmao Ye
- Department of Chemistry, Kansas State University, KS, 66506, Manhattan, USA
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44
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Smit B, Maesen TLM. Molecular Simulations of Zeolites: Adsorption, Diffusion, and Shape Selectivity. Chem Rev 2008; 108:4125-84. [DOI: 10.1021/cr8002642] [Citation(s) in RCA: 586] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Berend Smit
- Department of Chemical Engineering, University of California, Berkeley, California 94720-1462, Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and Centre Européen de Calcul Atomique et Moléculaire (CECAM), Ecole Normale Supérieure, 46 Allée d’Italie, 69007 Lyon France
| | - Theo L. M. Maesen
- Chevron, Energy Technology Company, 100 Chevron Way, Richmond, California 94802-0627
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45
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Pizzanelli S, Kababya S, Frydman V, Landau M, Vega S. NMR study of the adsorption-desorption kinetics of dissolved tetraalanine in MCM-41 mesoporous material. J Phys Chem B 2007; 109:8029-39. [PMID: 16851938 DOI: 10.1021/jp044389e] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study we show how deuterium magic-angle spinning NMR spectroscopy can be used to investigate the adsorption-desorption kinetics of molecules in solution at surface-liquid interfaces. An aqueous solution of deuterium-labeled tetraalanine is inserted in the pores of MCM-41 mesoporous material, and its 2H MAS NMR spectrum is measured as a function of temperature and fraction of filling of the pores. Prior to this study, the different types of water in MCM-41 are characterized as a function of water loading of the pores. Analysis of 2H MAS sideband line shapes enabled the determination of the adsorption and desorption rates and the activation energies of desorption.
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Affiliation(s)
- Silvia Pizzanelli
- Weizmann Institute of Science, Department of Chemical Physics and Chemical Research Support Unit, Rehovot 76100, Israel
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46
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Stempniewicz M, Khalil ASG, Rohwerder M, Marlow F. Diffusion in Coiled Pores − Learning from Microrelease and Microsurgery. J Am Chem Soc 2007; 129:10561-6. [PMID: 17685521 DOI: 10.1021/ja0728167] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The anisotropic diffusion in coiled pore systems of SBA-3-type microparticles has been studied by the release of guest molecules. The diffusion turns out as an example of the influence of hierarchical structuring on physical properties. Two modes of diffusion, associated with transport along and across the mesopores, can be identified and measured using optical microscopy. Redistribution between the two modes has been achieved by mesopore opening using two methods of "microsurgery"-either focused ion beams (FIB) or mechanical tools. The particles trimmed by FIB have revealed risks of misinterpretation of sample preparation with this tool. Instead of pure pore opening, the cutting by FIB resulted in simultaneous sealing of the mesopores.
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Affiliation(s)
- Magdalena Stempniewicz
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
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47
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Buntkowsky G, Breitzke H, Adamczyk A, Roelofs F, Emmler T, Gedat E, Grünberg B, Xu Y, Limbach HH, Shenderovich I, Vyalikh A, Findenegg G. Structural and dynamical properties of guest molecules confined in mesoporous silica materials revealed by NMR. Phys Chem Chem Phys 2007; 9:4843-53. [PMID: 17912415 DOI: 10.1039/b707322d] [Citation(s) in RCA: 129] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the last fifteen years several novel porous silica materials, which are periodically structured on the mesoscopic length scale, have been synthesized. They are of broad interest for fundamental studies of surface-substrate interactions, for studies of the dynamics of guest molecules in confinement and for studies of the effect of confinement on the structural and thermophysical properties of fluids. Examples of such confinement effects include the change of the freezing and melting points or glass transitions of the confined liquids. These effects are studied by combinations of several NMR techniques, such as (15)N- and (2)H-solid-state NMR line shape analysis, MAS NMR and NMR diffusometry with physico-chemical characterization techniques such as nitrogen adsorption and small angle diffraction of neutrons or X-rays. This combination does not require crystalline samples or special clean and well defined surfaces such as conventional surface science techniques, but can work with typical ill-defined real world systems. The review discusses, after a short introduction, the salient features of these materials and the applied NMR experiments to give the reader a basic knowledge of the systems and the experiments. The rest of the review then focuses on the structural and dynamical properties of guest molecules confined in the mesoporous silica. It is shown that the confinement into the pores leads to fascinating new features of the guests, which are often not known for their bulk phases. These features depend strongly on the interplay of the their interactions with the silica surface and their mutual interactions.
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Affiliation(s)
- Gerd Buntkowsky
- FSU Jena, Institut für Physikalische Chemie, Helmholtzweg 4, 07743, Jena, Germany.
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48
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Hwang DW, Chu CC, Sinha AK, Hwang LP. Dynamics of supercooled water in various mesopore sizes. J Chem Phys 2007; 126:044702. [PMID: 17286494 DOI: 10.1063/1.2429065] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Double-quantum-filtered NMR and T(1) inversion-recovery spectroscopy were employed to exploit the temperature-dependent dynamics of D(2)O confined in MCM-41. Samples with three pore sizes of 1.58, 2.03, and 2.34 nm and two D(2)O contents were investigated. The reorientation correlation times of confined D(2)O in variously sized pores exhibit different temperature dependencies. The results reveal that the D(2)O molecules at fast motion site remain mobile below approximately 225 K and a liquid-liquid phase transition occurs around this temperature for all samples studied. This temperature is thought to be unreachable for supercooled D(2)O. Particularly, in 20 wt % D(2)O loaded samples with pore diameters of 1.58 and 2.03 nm, the reorientational correlation times of D(2)O at fast motion site exhibit Arrhenius behavior between 225 and 290 K, while other samples show power law dependency. Thus, a liquid phase of the fragile type in bigger pores changes to the strong type in samples with smaller pores.
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Affiliation(s)
- Dennis W Hwang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617
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49
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Valiullin R, Dvoyashkin M, Kortunov P, Krause C, Kärger J. Diffusion of guest molecules in MCM-41 agglomerates. J Chem Phys 2007; 126:054705. [PMID: 17302496 DOI: 10.1063/1.2432112] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The pulsed field gradient nuclear magnetic resonance method has been used to study self-diffusion of cyclohexane in a commercial MCM-41 material at different external gas pressures from zero to saturated vapor pressure. It is found that the effective diffusivities exhibit three different regions with increasing pressure: decrease at low pressures, a sudden drop at intermediate pressures, and increase at higher pressures. In addition, in the region of irreversible adsorption (hysteresis loop) the diffusivities are also found to differ on the adsorption and the desorption branches. A simple analytical model taking account of different molecular ensembles with different transport properties due to the complex architecture of the porous structure is developed which provides a quantitative prediction of the experimental data. The analysis reveals that the effective diffusivity is predominantly controlled by the adsorption properties of the individual mesoporous MCM-41 crystallites which, in combination with high transport rates, provide a simple instrument for fine tuning of the transport properties by a subtle variation of the external conditions.
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Affiliation(s)
- Rustem Valiullin
- Fakultät für Physik und Geowissenschaften, Universität Leipzig, 04103 Leipzig, Germany.
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50
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Stempniewicz M, Rohwerder M, Marlow F. Release from silica SBA-3-like mesoporous fibers: cross-wall transport and external diffusion barrier. Chemphyschem 2007; 8:188-94. [PMID: 17111456 DOI: 10.1002/cphc.200600408] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The transport of guest molecules between adjacent pore channels (cross-wall transport) is the limiting factor in the release of guest molecules from SBA-3-like fibers. This specific mode of diffusion is identified by microscopic observation and studied quantitatively in a UV/Vis-monitored release experiment. Analysis of release curves reveals that the external particle surface offers resistance to the guest molecules passing through it (external diffusion barrier). This barrier is native to as-synthesized fibers and can be effectively modified to slow down the release. Extremely effective slowdown is achieved by deposition of a nanometer-thick layer of sodium silicate, that is, the guest molecules are then safely stored in the particles.
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Affiliation(s)
- Magdalena Stempniewicz
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
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