Dynamic Heterogeneities in Liquid Mixtures Confined in Nanopores

Mhanna Ramona; Catrou Pierre; Dutta Sujeet; Lefort Ronan; Essafri Ilham; Ghoufi Aziz; Muthmann Matthias; Zamponi Michaela; Frick Bernhard; Morineau Denis

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Dynamic Heterogeneities in Liquid Mixtures Confined in Nanopores

机译：纳米孔局限性混合物中的动态异质性

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Binary liquid mixtures can exhibit nanosegregation, albeit being fully miscible and homogeneous at the macroscopic scale. This tendency can be amplified by geometrical nanoconfinement, leading to remarkable properties. This work investigates the molecular dynamics of tert-butanol (TBA)-toluene (TOL) mixtures confined in silica nanochannels by quasielastic neutron scattering and molecular dynamics simulation. It reveals a decoupling of the molecular motion of each constituent of the binary liquid, which can be followed independently by selective isotopic H/D labeling. We argue that this behavior is the signature of spatially segregated dynamic heterogeneities, which are due to the recently established core-shell nanophase separation induced by mesoporous confinement.

机译：二元液体混合物可以表现出纳米聚集，尽管在宏观尺度上完全混溶和均匀。这种趋势可以通过几何纳米细胺来扩增，导致显着的性质。通过准弹性中子散射和分子动力学模拟，研究了叔丁醇（TBA） - 叔丁醇（TBA） - 吲哚（Tol）混合物的分子动力学。它揭示了二元液体的每个组分的分子运动的去耦，其可以通过选择性同位素H / D标记独立遵循。我们认为这种行为是空间隔离的动态异质性的签名，这是由于最近建立了由介孔限制诱导的核心壳纳比分离。

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《The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical》 |2020年第15期|共11页
作者
Mhanna Ramona; Catrou Pierre; Dutta Sujeet; Lefort Ronan; Essafri Ilham; Ghoufi Aziz; Muthmann Matthias; Zamponi Michaela; Frick Bernhard; Morineau Denis;
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Univ Rennes 1 Inst Phys Rennes CNRS UMR 6251 F-35042 Rennes France;

Univ Rennes 1 Inst Phys Rennes CNRS UMR 6251 F-35042 Rennes France;

Univ Rennes 1 Inst Phys Rennes CNRS UMR 6251 F-35042 Rennes France;

Univ Rennes 1 Inst Phys Rennes CNRS UMR 6251 F-35042 Rennes France;

Univ Rennes 1 Inst Phys Rennes CNRS UMR 6251 F-35042 Rennes France;

Univ Rennes 1 Inst Phys Rennes CNRS UMR 6251 F-35042 Rennes France;

Forschungszentrum Julich Julich Germany;

Forschungszentrum Julich Julich Germany;

Inst Laue Langevin F-38000 Grenoble France;

Univ Rennes 1 Inst Phys Rennes CNRS UMR 6251 F-35042 Rennes France;

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正文语种 eng
中图分类物理化学（理论化学）、化学物理学;
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1. Dynamic Heterogeneities in Liquid Mixtures Confined in Nanopores [J] . Mhanna Ramona, Catrou Pierre, Dutta Sujeet, The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 2020,第15期

机译：纳米孔局限性混合物中的动态异质性
2. Heterogeneity in the Dynamics of the Ionic Liquid [BMIM~+][PF6~- ] Confined in a Slit Nanopore [J] . Ramesh Singh, Joshua Monk, Francisco R. Hung The journal of physical chemistry, C. Nanomaterials and interfaces . 2011,第33期

机译：狭缝纳米孔中离子液体[BMIM〜+] [PF6-〜]动力学的非均质性
3. Propane-Water Mixtures Confined within Cylindrical Silica Nanopores: Structural and Dynamical Properties Probed by Molecular Dynamics [J] . Tran Thi Bao Le, Striolo Alberto, Gautam Siddharth S., Langmuir: The ACS Journal of Surfaces and Colloids . 2017,第42期

机译：限制在圆柱形二氧化硅纳米孔内的丙烷 - 水混合物：分子动力学探测的结构和动态性能
4. EQUILIBRIUM PRESSURE OF LIQUID CONFINED IN NANOPORES USING MOLECULAR DYNAMICS SIMULATIONS [C] . An Zou, Shalabh C. Maroo, Manish Gupta ASME Fluids Engineering Division Meeting;ASME Heat Transfer Conference;International Conference on Nanochannels, Microchannels and Minichannels . 2020

机译：利用分子动力学模拟纳米孔限制液体平衡压力
5. The Structure and Dynamics of Supercooled SPC/E Water Confined in Silica Nanopores and Equilibrium Glassy Films: A Two-System Study [D] . Kuon, Nicholas J. 2019

机译：二氧化硅纳米孔和平衡玻璃薄膜超冷却SPC / E水的结构和动态：双系统研究
6. Propane–Water Mixtures Confined within CylindricalSilica Nanopores: Structural and Dynamical Properties Probed by MolecularDynamics [O] . Tran ThiBao Le, Alberto Striolo, *, -1

机译：限制在圆柱内的丙烷-水混合物二氧化硅纳米孔：分子探测的结构和动力学性质。动力学
7. Slow dynamics, dynamic heterogeneities, and fragility of supercooled liquids confined in random media [O] . Kim Kang, Miyazaki Kunimasa, Saito Shinji 2011

机译：限制在随机介质中的过冷液体的慢动力学，动态异质性和易碎性
8. Confined Geometry Effects on Reorientational Dynamics of Molecular Liquids inPorous Silica Glasses [R] . Liu, G., Li, Y., Jonas, J. 1991

机译：受限几何效应对多孔硅玻璃中分子液体重定向动力学的影响

Dynamic Heterogeneities in Liquid Mixtures Confined in Nanopores

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