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Sing N, Mahali K, Mondal P, Chakraborty J, Henaish AMA, Ahmed J, Hussain A, Roy S. Exploring solubility and energetics: Dissolution of biologically important l-threonine in diverse aqueous organic mixtures across the temperature range of 288.15 K to 308.15 K. Biophys Chem 2024; 306:107154. [PMID: 38142475 DOI: 10.1016/j.bpc.2023.107154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/29/2023] [Accepted: 12/04/2023] [Indexed: 12/26/2023]
Abstract
This research provides a thorough investigation into the solubility behavior and solution thermodynamics of l-threonine in significant organic solvent systems. The work was done on measuring the actual solubility and subsequently calculating overall transfer solvation free energetics (∆Genergetic0i) and transfer entropies (∆St0i) at a temperature of 298.15 K. These measurements were performed as l-threonine transitioned from water to different water-organic mixed solvents systems. The saturated solubilities of l-threonine were determined using the 'gravimetric method' at five equidistant temperatures namely 288.15 K, 293.15 K, 298.15 K, 303.15 K and 308.15 K. By analyzing the data on solubility, we further obtained the different energies involved in solvation related issues. In the case of single solvents, the nature of solubility of l-threonine was observed like: dimethylsulfoxide (DMSO) < acetonitrile (ACN) < N, N-dimethylformamide (DMF) < ethylene glycol (EG) < water (H2O), irrespective of the experimental conditions. Specifically, at 298.15 K, the solubilities of l-threonine in single solvents were found to be as follows: 0.8220 mol per kg of water, 0.3101 mol per kg of EG, 0.1337 mol per kg of DMF, 0.1107 mol per kg DMSO and 0.1188 mol per kg of ACN. This research critically examines the relationship between the experimental saturated solubility of l-threonine and the complex properties influencing its solvation energy in diverse aqueous organic solvent systems.
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Affiliation(s)
- Nilam Sing
- Department of Chemistry, University of Kalyani, Nadia, Kalyani 741235, India; Department of Chemistry, Vivekananda Mahavidhyalaya, Burdwan, West Bengal, India
| | - Kalachand Mahali
- Department of Chemistry, University of Kalyani, Nadia, Kalyani 741235, India.
| | - Pratima Mondal
- Department of Chemistry, University of Kalyani, Nadia, Kalyani 741235, India
| | - Jit Chakraborty
- Department of Chemistry, University of Kalyani, Nadia, Kalyani 741235, India; Department of Chemistry, JIS College of Engineering, Nadia, Kalyani, 741235, India
| | - A M A Henaish
- Physics Department, Faculty of Science, Tanta University, Tanta 31527, Egypt; Nanotech Center, Ural Federal University, Ekaterinburg 620002, Russia
| | - Jahangeer Ahmed
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Afzal Hussain
- Department of Pharmacognosy, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Sanjay Roy
- Department of Chemistry, School of Sciences, Netaji Subhas Open University, Kolkata, West Bengal, India.
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Růžička K, Štejfa V, Červinka C, Fulem M, Šturala J. Thermodynamic Study of N-Methylformamide and N, N-Dimethyl-Formamide. Molecules 2024; 29:1110. [PMID: 38474622 DOI: 10.3390/molecules29051110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Revised: 02/27/2024] [Accepted: 02/27/2024] [Indexed: 03/14/2024] Open
Abstract
An extensive thermodynamic study of N-methylformamide (CAS RN: 123-39-7) and N,N-dimethylformamide (CAS RN: 68-12-2), is presented in this work. The liquid heat capacities of N-methylformamide were measured by Tian-Calvet calorimetry in the temperature interval (250-300) K. The vapor pressures for N-methylformamide and N,N-dimethylformamide were measured using static method in the temperature range 238 K to 308 K. The ideal-gas thermodynamic properties were calculated using a combination of the density functional theory (DFT) and statistical thermodynamics. A consistent thermodynamic description was developed using the method of simultaneous correlation, where the experimental and selected literature data for vapor pressures, vaporization enthalpies, and liquid phase heat capacities and the calculated ideal-gas heat capacities were treated together to ensure overall thermodynamic consistency of the results. The resulting vapor pressure equation is valid from the triple point to the normal boiling point temperature.
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Affiliation(s)
- Květoslav Růžička
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, CZ-166 28 Prague, Czech Republic
| | - Vojtěch Štejfa
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, CZ-166 28 Prague, Czech Republic
| | - Ctirad Červinka
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, CZ-166 28 Prague, Czech Republic
| | - Michal Fulem
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, CZ-166 28 Prague, Czech Republic
| | - Jiří Šturala
- Department of Inorganic Chemistry, University of Chemistry and Technology, Prague, Technická 5, CZ-166 28 Prague, Czech Republic
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Wilding MC, Benmore C, Headen TF, Di Mino C, Miller TS, Suter TM, Corà F, Clancy AJ, Sella A, McMillan P, Howard CA. The local ordering of polar solvents around crystalline carbon nitride nanosheets in solution. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2023; 381:20220337. [PMID: 37691462 PMCID: PMC10493548 DOI: 10.1098/rsta.2022.0337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 08/03/2023] [Indexed: 09/12/2023]
Abstract
The crystalline graphitic carbon nitride, poly-triazine imide (PTI) is highly unusual among layered materials since it is spontaneously soluble in aprotic, polar solvents including dimethylformamide (DMF). The PTI material consists of layers of carbon nitride intercalated with LiBr. When dissolved, the resulting solutions consist of dissolved, luminescent single to multilayer nanosheets of around 60-125 nm in diameter and Li+ and Br- ions originating from the intercalating salt. To understand this unique solubility, the structure of these solutions has been investigated by high-energy X-ray and neutron diffraction. Although the diffraction patterns are dominated by inter-solvent correlations there are clear differences between the X-ray diffraction data of the PTI solution and the solvent in the 4-6 Å-1 range, with real space differences persisting to at least 10 Å. Structural modelling using both neutron and X-ray datasets as a constraint reveal the formation of distinct, dense solvation shells surrounding the nanoparticles with a layer of Br-close to the PTI-solvent interface. This solvent ordering provides a configuration that is energetically favourable underpinning thermodynamically driven PTI dissolution. This article is part of the theme issue 'Exploring the length scales, timescales and chemistry of challenging materials (Part 2)'.
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Affiliation(s)
- Martin C. Wilding
- UK Catalysis Hub, Research Complex at Harwell, Rutherford Appleton Laboratory, Oxfordshire OX11 0QX, UK
| | - Chris Benmore
- X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA
| | - Thomas F. Headen
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Oxfordshire OX11 0QX, UK
| | - Camilla Di Mino
- Department of Physics and Astronomy, University College London, London WC1E 6BT, UK
| | - Thomas S. Miller
- Electrochemical Innovation Laboratory, Department of Chemical Engineering, University College London, London WC1E 7JE, UK
| | - Theo M. Suter
- Electrochemical Innovation Laboratory, Department of Chemical Engineering, University College London, London WC1E 7JE, UK
| | - Furio Corà
- Department of Chemistry, University College London, London WC1E 6BT, UK
| | - Adam J. Clancy
- Department of Chemistry, University College London, London WC1E 6BT, UK
| | - Andrea Sella
- Department of Chemistry, University College London, London WC1E 6BT, UK
| | - Paul McMillan
- Department of Chemistry, University College London, London WC1E 6BT, UK
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Zhang X, Fei C, Shen L, Baral P, Vijayaraghavan SN, Yan F, Gong X, Wang H. Manipulating Nucleation and Crystal Growth of Inorganic Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2023; 15:38522-38529. [PMID: 37548761 DOI: 10.1021/acsami.3c08746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Inorganic metal halide perovskite materials as sunlight absorbers for solar cells exhibit better thermal stability than organic-inorganic hybrid counterparts. Pure cesium lead triiodide (CsPbI3), with the most suitable band gap, suffers phase instability under an ambient environment. Nucleation and crystal growth are two crucial steps in fabricating a solution-processed perovskite film. A high-quality perovskite film with good morphology makes a significant impact on the efficiency and stability of perovskite solar cells. Dimethylformamide (DMF) is a commonly used aprotic solvent. However, it is difficult to obtain a high-quality inorganic perovskite film using DMF as a single solvent due to its slow evaporation and strong coordination with Pb2+. Here, we investigate dimethylacetamide (DMAc)/DMF as a cosolvent to prompt nucleation during the spin-coating process, leading to higher nucleation density and better surface coverage. In addition, we introduce CsBr in dimethylammonium lead triiodide (DMAPbI3)/CsI precursors to slow down the crystal growth process. CsBr does not increase the film band gap but leads to a pinhole-free film with better crystallinity. Through nucleation and crystal growth engineering, the power conversion efficiency of inorganic perovskite devices is improved to 17.67%, and ambient environment stability is significantly enhanced.
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Affiliation(s)
- Xinwen Zhang
- Department of Physics, University of Miami, Coral Gables, Florida 33146, United States
| | - Chengbin Fei
- Department of Physics, University of Miami, Coral Gables, Florida 33146, United States
| | - Lening Shen
- School of Polymer Science and Polymer Engineering, College of Engineering and Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Pramod Baral
- Department of Physics, University of Miami, Coral Gables, Florida 33146, United States
| | | | - Feng Yan
- Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Xiong Gong
- School of Polymer Science and Polymer Engineering, College of Engineering and Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - He Wang
- Department of Physics, University of Miami, Coral Gables, Florida 33146, United States
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Viscosity decoupling does not guarantee dynamic heterogeneity: A way out. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Di Mino C, Clancy AJ, Sella A, Howard CA, Headen TF, Seel AG, Skipper NT. Weak Interactions in Dimethyl Sulfoxide (DMSO)-Tertiary Amide Solutions: The Versatility of DMSO as a Solvent. J Phys Chem B 2023; 127:1357-1366. [PMID: 36752593 PMCID: PMC9940205 DOI: 10.1021/acs.jpcb.2c07155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The structures of equimolar mixtures of the commonly used polar aprotic solvents dimethylformamide (DMF) and dimethylacetamide (DMAc) in dimethyl sulfoxide (DMSO) have been investigated via neutron diffraction augmented by extensive hydrogen/deuterium isotopic substitution. Detailed 3-dimensional structural models of these solutions have been derived from the neutron data via Empirical Potential Structure Refinement (EPSR). The intermolecular center-of-mass (CoM) distributions show that the first coordination shell of the amides comprises ∼13-14 neighbors, of which approximately half are DMSO. In spite of this near ideal coordination shell mixing, the changes to the amide-amide structure are found to be relatively subtle when compared to the pure liquids. Analysis of specific intermolecular atom-atom correlations allows quantitative interpretation of the competition between weak interactions in the solution. We find a hierarchy of formic and methyl C-H···O hydrogen bonds forms the dominant local motifs, with peak positions in the range of 2.5-3.0 Å. We also observe a rich variety of steric and dispersion interactions, including those involving the O═C-N amide π-backbones. This detailed insight into the structural landscape of these important liquids demonstrates the versatility of DMSO as a solvent and the remarkable sensitivity of neutron diffraction, which is critical for understanding weak intermolecular interactions at the nanoscale and thereby tailoring solvent properties to specific applications.
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Affiliation(s)
- Camilla Di Mino
- Department
of Physics and Astronomy, University College
London, Gower Street, LondonWC1E
6BT, U.K.
| | - Adam J. Clancy
- Department
of Chemistry, University College London, 20 Gordon Street, LondonWC1H 0AJ, U.K.
| | - Andrea Sella
- Department
of Chemistry, University College London, 20 Gordon Street, LondonWC1H 0AJ, U.K.
| | - Christopher A. Howard
- Department
of Physics and Astronomy, University College
London, Gower Street, LondonWC1E
6BT, U.K.
| | - Thomas F. Headen
- ISIS
Neutron and Muon Source, Science and Technology
Facilities Council, Rutherford Appleton Laboratory, Harwell Campus, DidcotOX11 0QX, U.K.
| | - Andrew G. Seel
- ISIS
Neutron and Muon Source, Science and Technology
Facilities Council, Rutherford Appleton Laboratory, Harwell Campus, DidcotOX11 0QX, U.K.,E-mail: . Phone: +44 (0)1793 547500
| | - Neal T. Skipper
- Department
of Physics and Astronomy, University College
London, Gower Street, LondonWC1E
6BT, U.K.,E-mail: . Phone: +44 (0)207 679 3526
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4f–4f Spectral Study and Calculation of Energy Interaction Parameters for Interaction of Nd3+ with Different Solvents. CHEMISTRY AFRICA 2022. [DOI: 10.1007/s42250-022-00518-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Donnarumma PR, Frojmovic S, Marino P, Bicalho HA, Titi HM, Howarth AJ. Synthetic approaches for accessing rare-earth analogues of UiO-66. Chem Commun (Camb) 2021; 57:6121-6124. [PMID: 34027524 DOI: 10.1039/d1cc01552d] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Rare-earth (RE) analogues of UiO-66 with non-functionalised 1,4-benzenedicarboxylate linkers are synthesised for the first time, and a series of synthetic approaches is provided to troubleshoot the synthesis. RE-UiO-66 analogues are fully characterised, and demonstrate a high degree of crystallinity, high surface area and thermal stability, consistent with the UiO-66 archetype.
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Affiliation(s)
- P Rafael Donnarumma
- Department of Chemistry and Biochemistry, and Centre for NanoScience Research, Concordia University, 7141 Sherbrooke St W., Montréal, QC H4B 1R6, Canada.
| | - Sahara Frojmovic
- Department of Chemistry and Biochemistry, and Centre for NanoScience Research, Concordia University, 7141 Sherbrooke St W., Montréal, QC H4B 1R6, Canada.
| | - Paola Marino
- Department of Chemistry and Biochemistry, and Centre for NanoScience Research, Concordia University, 7141 Sherbrooke St W., Montréal, QC H4B 1R6, Canada.
| | - Hudson A Bicalho
- Department of Chemistry and Biochemistry, and Centre for NanoScience Research, Concordia University, 7141 Sherbrooke St W., Montréal, QC H4B 1R6, Canada.
| | - Hatem M Titi
- Department of Chemistry, McGill University, 801 Sherbrooke St W., Montréal, QC H3A 0B8, Canada
| | - Ashlee J Howarth
- Department of Chemistry and Biochemistry, and Centre for NanoScience Research, Concordia University, 7141 Sherbrooke St W., Montréal, QC H4B 1R6, Canada.
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Ohashi K, Takeshita H. Infrared spectroscopic and computational studies of Co(ClO 4) 2 dissolved in N,N-dimethylformamide (DMF). Vibrations of DMF influenced by Co 2+ or ClO 4- or both. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 248:119289. [PMID: 33316656 DOI: 10.1016/j.saa.2020.119289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/19/2020] [Accepted: 11/27/2020] [Indexed: 06/12/2023]
Abstract
Infrared (IR) spectroscopy for N,N-dimethylformamide (DMF) shows that the OCN bend (δOCN) and the CO stretch (νCO) vibrations undergo an upshift and a downshift, respectively, on the dissolution of Co(ClO4)2. Quantum chemical calculations are performed for optimizing the structures and predicting the IR spectra of model complexes for solute species. The calculations reveal that Co2+ exerts a much larger influence than ClO4- on the vibrations of DMF. For Co2+(DMF)6, in which each DMF molecule is coordinated to Co2+ via the O atom, the Co2+⋯DMF interaction upshifts the δOCN frequencies (+24 cm-1 on average) while the dipole coupling gives rise to splitting (12 cm-1) of the modes. On the other hand, the Co2+⋯DMF interaction downshifts the νCO frequencies (-15 cm-1 on average) while the splitting of the modes amounts to 37 cm-1. As a result, one of the νCO modes is located at an upshifted position (+13 cm-1) despite the O-atom coordination. For six-coordinated isomers of Co2+(DMF)7, the δOCN and νCO frequencies of the second-sphere DMF are close to those of bulk DMF in neat liquid. The calculations indicate that it is difficult to prove or exclude the formation of contact ion pairs [Co(DMF)5ClO4]+ and solvent-shared ion pairs [Co(DMF)6ClO4]+ by IR spectroscopy in the δOCN and νCO regions. However, asymmetric ClO stretches of the ClO4- moiety suggest that conceivable is the coexistence of solvent-shared ion pairs only.
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Affiliation(s)
- Kazuhiko Ohashi
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka, Fukuoka 819-0395, Japan.
| | - Hayato Takeshita
- Department of Chemistry, Graduate School of Science, Kyushu University, Motooka, Fukuoka 819-0395, Japan
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Hong J, Nayal OS, Mo F. Carboxylation of Alkenyl Boronic Acids and Alkenyl Boronic Acid Pinacol Esters with CO 2
Catalyzed by Cuprous Halide. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000288] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Junting Hong
- Department of Energy and Resources Engineering; College of Engineering; Peking University; 100871 Beijing China
| | - Onkar S. Nayal
- Department of Energy and Resources Engineering; College of Engineering; Peking University; 100871 Beijing China
| | - Fanyang Mo
- Department of Energy and Resources Engineering; College of Engineering; Peking University; 100871 Beijing China
- Jiangsu Donghai Silicon Industry S&T Innovation Center; 222300 Donghai County Jiangsu China
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