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Agieienko V, Neklyudov V, Buchner R. Typical at glance but interesting when analyzed in detail: A story of Tris hydration. J Chem Phys 2022; 157:224204. [PMID: 36546815 DOI: 10.1063/5.0128391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
This paper provides results of dielectric relaxation (DR) spectroscopy of aqueous solutions of tris(hydroxymethyl)aminomethane (Tris) covering frequencies of 0.05 ≤ ν/GHz ≤89. The DR spectra can be well fit by a sum of Cole-Cole relaxation, assigned to the solute, and 2 Debye modes already observed for neat water. Analysis of the amplitudes reveals that Tris is hydrated by 7 H2Os up to its solubility limit. However, the rather high effective solute dipole moment of ≈12 D suggests that H2O dipoles in contact with Tris should reorient independently from it. Accordingly, an alternative description of the DR spectra with a superposition of 4 Debyerelaxations was attempted. In this model, the slowest mode at ∼4 GHz arises from solute reorientation and that at ∼8 GHz was assigned to dynamically retarded hydration water, whereas relaxations at ∼18 and ∼500 GHz are again those of (rather unperturbed) bulk water. Analysis of the solvent-related modes shows that Tris indeed slows down 7-8 H2O molecules. However, the solute-solvent interaction strength is rather weak, excluding the rotation of an alleged Tris-(7-8) H2O cluster as an entity. The now derived effective dipole moment of (6.3 ± 0.5) D for the bare Tris molecule allows speculations on its conformation. With the help of computational methods, we suggest that Tris dissolved in water most likely possesses an intramolecular H-bond between the nitrogen and hydrogen atoms of amino and hydroxyl groups, respectively. In addition, computational results indicate that the seven hydration H2Os found by DR bind directly to the Tris OH groups.
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Affiliation(s)
- V Agieienko
- Laboratory of Membrane and Catalytic Processes, Nanotechnology and Biotechnology Department, Nizhny Novgorod State Technical University n.a. R.E. Alekseev, 24 Minina Str., 603950 Nizhny Novgorod, Russian Federation
| | - V Neklyudov
- Wolfson Department of Chemical Engineering, Technion-IIT, Haifa 32000, Israel
| | - R Buchner
- Institut für Physikalische und Theoretische Chemie, Universität Regensburg, Universitätsstraße 31, D-93040 Regensburg, Germany
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Liao RM, An Z, Ye HY. Structural phase transition in a charge-transfer compound: tropylium hexafluoridoantimonate(V)–1,4-dimethylnaphthalene (1/1). ACTA CRYSTALLOGRAPHICA SECTION C STRUCTURAL CHEMISTRY 2022; 78:366-370. [DOI: 10.1107/s2053229622005320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/19/2022] [Indexed: 11/11/2022]
Abstract
Molecular motion in crystals has attracted much attention for the development of stimuli-responsive materials. The most studied are molecules with few atoms or highly symmetrical molecules. To develop molecules with new motion characteristics, we synthesized a charge-transfer compound, namely, tropylium hexafluoridoantimonate(V)–1,4-dimethylnaphthalene (1/1), (C7H7)[SbF6]·C12H12, and studied its structural phase transition. In this compound, the tropylium cation and the 1,4-dimethylnaphthalene molecule have planar geometry, but the latter has low symmetry. They are stacked as a one-dimensional chain structure through π–π charge-transfer interactions. Weak intermolecular interactions and planar molecular geometry result in a large degree of freedom of in-plane motion. Upon heating, due to the in-plane rotation of the molecules, the compound undergoes an order–disorder structural phase transition (phase-transition temperature = 334 K). The space group of the room-temperature phase is P21/m and the space group of the high-temperature phase is P4/mmm. This phase transition is accompanied by significant dielectric anomalies. The current investigation shows that the structural features of the title compound can be used to construct functional materials with phase transitions, such as molecular ferroelectrics.
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Ai Y, Zeng YL, He WH, Huang XQ, Tang YY. Six-Fold Vertices in a Single-Component Organic Ferroelectric with Most Equivalent Polarization Directions. J Am Chem Soc 2020; 142:13989-13995. [DOI: 10.1021/jacs.0c06936] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yong Ai
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Yu-Ling Zeng
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Wen-Hui He
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Xue-Qin Huang
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Yuan-Yuan Tang
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
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Santos-Moreno S, Doppiu S, Lopez GA, Marinova N, Serrano Á, Silveira E, Palomo del Barrio E. Study of the Phase Transitions in the Binary System NPG-TRIS for Thermal Energy Storage Applications. MATERIALS 2020; 13:ma13051162. [PMID: 32151040 PMCID: PMC7085018 DOI: 10.3390/ma13051162] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 11/16/2022]
Abstract
Neopentylglycol (NPG) and tris(hydroxymethyl)aminomethane (TRIS) are promising phase change materials (PCMs) for thermal energy storage (TES) applications. These molecules undergo reversible solid-solid phase transitions that are characterized by high enthalpy changes. This work investigates the NPG-TRIS binary system as a way to extend the use of both compounds in TES, looking for mixtures that cover transition temperatures different from those of pure compounds. The phase diagram of NPG-TRIS system has been established by thermal analysis. It reveals the existence of two eutectoids and one peritectic invariants, whose main properties as PCMs (transition temperature, enthalpy of phase transition, specific heat and density) have been determined. Of all transitions, only the eutectoid at 392 K shows sufficiently high enthalpy of solid-solid phase transition (150-227 J/g) and transition temperature significantly different from that of the solid-state transitions of pure compounds (NPG: 313 K; TRIS: 407 K). Special attention has also been paid to the analysis of metastability issues that could limit the usability of NPG, TRIS and their mixtures as PCMs. It is proven that the addition of small amounts of expanded graphite microparticles contributes to reduce the subcooling phenomena that characterizes NPG and TRIS and solve the reversibility problems observed in NPG/TRIS mixtures.
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Affiliation(s)
- Sergio Santos-Moreno
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, 01510 Vitoria-Gasteiz, Spain; (S.S.-M.); (E.P.d.B.)
- TECNALIA, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de San Sebastián, 20009 Donostia-San Sebastián, Spain; (N.M.); (E.S.)
- Applied Physics II, University of the Basque Country UPV-EHU, 48940 Leioa, Spain;
| | - Stefania Doppiu
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, 01510 Vitoria-Gasteiz, Spain; (S.S.-M.); (E.P.d.B.)
- Correspondence:
| | - Gabriel A. Lopez
- Applied Physics II, University of the Basque Country UPV-EHU, 48940 Leioa, Spain;
| | - Nevena Marinova
- TECNALIA, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de San Sebastián, 20009 Donostia-San Sebastián, Spain; (N.M.); (E.S.)
| | - Ángel Serrano
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, 01510 Vitoria-Gasteiz, Spain; (S.S.-M.); (E.P.d.B.)
| | - Elena Silveira
- TECNALIA, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de San Sebastián, 20009 Donostia-San Sebastián, Spain; (N.M.); (E.S.)
| | - Elena Palomo del Barrio
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, 01510 Vitoria-Gasteiz, Spain; (S.S.-M.); (E.P.d.B.)
- Ikerbasque, Basque Foundation for Science, 348013 Bilbao, Spain
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Sun Z, Chen T, Liu X, Hong M, Luo J. Plastic Transition to Switch Nonlinear Optical Properties Showing the Record High Contrast in a Single-Component Molecular Crystal. J Am Chem Soc 2015; 137:15660-3. [PMID: 26619244 DOI: 10.1021/jacs.5b11088] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To switch bulk nonlinear optical (NLO) effects represents an exciting new branch of NLO material science, whereas it remains a great challenge to achieve high contrast for "on/off" of quadratic NLO effects in crystalline materials. Here, we report the supereminent NLO-switching behaviors of a single-component plastic crystal, 2-(hydroxymethyl)-2-nitro-1,3-propanediol (1), which shows a record high contrast of at least ∼150, exceeding all the known crystalline switches. Such a breakthrough is clearly elucidated from the slowing down of highly isotropic molecular motions during plastic-to-rigid transition. The deep understanding of its intrinsic plasticity and superior NLO property allows the construction of a feasible switching mechanism. As a unique class of substances with short-range disorder embedded in long-range ordered crystalline lattice, plastic crystals enable response to external stimuli and fulfill specific photoelectric functions, which open a newly conceptual avenue for the designing of new functional materials.
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Affiliation(s)
- Zhihua Sun
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou, Fujian 350002, P. R. China
| | - Tianliang Chen
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou, Fujian 350002, P. R. China
| | - Xitao Liu
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou, Fujian 350002, P. R. China
| | - Maochun Hong
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou, Fujian 350002, P. R. China
| | - Junhua Luo
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou, Fujian 350002, P. R. China
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Thakral S, Suryanarayanan R. Salt formation during freeze-drying - an approach to enhance indomethacin dissolution. Pharm Res 2015; 32:3722-31. [DOI: 10.1007/s11095-015-1732-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 06/01/2015] [Indexed: 10/23/2022]
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Moriya M, Kato D, Sakamoto W, Yogo T. Plastic crystalline lithium salt with solid-state ionic conductivity and high lithium transport number. Chem Commun (Camb) 2011; 47:6311-3. [DOI: 10.1039/c1cc00070e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tamarit JL, Legendre B, Buisine JM. Thermodynamic Study of Some Neopentane Derivated by Thermobarometric Analysis. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259408028219] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Chandra D, Mandalia H, Chien WM, Lindle DW, Rudman R. Solid-Solid Phase Transition in Trimethylolpropane (TRMP). ACTA ACUST UNITED AC 2002. [DOI: 10.1524/zpch.2002.216.12.1389] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
An orientationally disordered crystalline (ODIC) plastic phase (γ) was observed in Trimethylolpropane (TRMP) during heating by high resolution thermal and X-ray diffraction analyses. TRMP is a potential thermal energy storage material. The enthalpies of solid-solid (α → γ at 327.8 K) and fusion (γ → liquid at 332.7 K) transitions are 16.36 kJ/mol and 0.9 kJ/mol, respectively. Supercooling was observed during solidification of melts, and this supercooled γ phase began to transform to a metastable crystalline phase, designated as α′, after 20 minutes at room temperature. The lattice parameters of the monoclinic α phase, obtained from this study, are:
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Salud J, López D, Barrio M, Tamarit J, Oonk H, Negrier P, Haget Y. On the Crystallography and Thermodynamics in Orientationally Disordered Phases in Two-Component Systems. J SOLID STATE CHEM 1997. [DOI: 10.1006/jssc.1997.7530] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Fedorov BS, Gotovina NL, Arakcheeva VV, Trofimova RF, Atovmyan LO. New reaction of the sodium salt of 2-nitroethanol. X-ray analysis of the sodium salt of 2-oxo-3-hydroxypropionic acid oxime, 2-bromo-2-nitropropane-1,3-diol, and the model 2,2-dinitropropane-1,3-diol. Russ Chem Bull 1996. [DOI: 10.1007/bf01431611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Benson D, Burrows R, Webb J. Solid state phase transitions in pentaerythritol and related polyhydric alcohols. ACTA ACUST UNITED AC 1986. [DOI: 10.1016/0165-1633(86)90040-7] [Citation(s) in RCA: 117] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sake Gowda DS, Rudman R. Polymorphism of crystalline poly(hydroxymethyl) compounds. VI. The crystal structure of 2‐hydroxymethyl‐2‐nitro‐1,3‐propanediol. J Chem Phys 1982. [DOI: 10.1063/1.444366] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Reddy MVVS, Lingam KV, Gundu Rao TK. ESR and proton ENDOR studies in urea oxalic acid (2:1) single crystal: Radical transformation. J Chem Phys 1982. [DOI: 10.1063/1.443554] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Eilerman D, Rudman R. Polymorphism of crystalline poly(hydroxymethyl) compounds. III. The structures of crystalline and plastic tris(hydroxymethyl)aminomethane. J Chem Phys 1980. [DOI: 10.1063/1.438982] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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