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Booth HM, Moran DD, Gonzalez J, Luna-Uribe J, Goeltz JC. Cooperative Demolition: Water's Disruption of Structures in Deep Eutectic Solvents. J Phys Chem B 2021; 125:3850-3854. [PMID: 33826328 DOI: 10.1021/acs.jpcb.0c11147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We report a study of cooperativity in the transition from a nonaqueous deep eutectic solvent (DES) to an aqueous solution. In some systems, a nonequilibrium region prevails at low water contents, while cooperativity is always observed at high water contents. Catechol-based mixtures exhibit a Hill constant (nH) of ∼ 3 and an overall ΔG° of ca. -3-5 kJ/mol for the transition from DES to aqueous solution. In contrast, o-phenylenediamine-based mixtures exhibit a shift from nH = 0 at low water contents to nH ∼ 12 at high water contents with an overall ΔG° of ca. -13-15 kJ/mol. To the best of our knowledge, this is the first evidence for a shift from nonequilibrium to cooperative binding in a transition from nonaqueous to aqueous solutions.
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Affiliation(s)
- Haley M Booth
- Department of Biology & Chemistry, California State University, Monterey Bay, 100 Campus Center, Seaside, California 93955, United States
| | - Dylan D Moran
- Department of Biology & Chemistry, California State University, Monterey Bay, 100 Campus Center, Seaside, California 93955, United States
| | - Janet Gonzalez
- Department of Biology & Chemistry, California State University, Monterey Bay, 100 Campus Center, Seaside, California 93955, United States
| | - Jesus Luna-Uribe
- Department of Biology & Chemistry, California State University, Monterey Bay, 100 Campus Center, Seaside, California 93955, United States
| | - John C Goeltz
- Department of Biology & Chemistry, California State University, Monterey Bay, 100 Campus Center, Seaside, California 93955, United States
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Hansen BB, Spittle S, Chen B, Poe D, Zhang Y, Klein JM, Horton A, Adhikari L, Zelovich T, Doherty BW, Gurkan B, Maginn EJ, Ragauskas A, Dadmun M, Zawodzinski TA, Baker GA, Tuckerman ME, Savinell RF, Sangoro JR. Deep Eutectic Solvents: A Review of Fundamentals and Applications. Chem Rev 2020; 121:1232-1285. [PMID: 33315380 DOI: 10.1021/acs.chemrev.0c00385] [Citation(s) in RCA: 728] [Impact Index Per Article: 182.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Deep eutectic solvents (DESs) are an emerging class of mixtures characterized by significant depressions in melting points compared to those of the neat constituent components. These materials are promising for applications as inexpensive "designer" solvents exhibiting a host of tunable physicochemical properties. A detailed review of the current literature reveals the lack of predictive understanding of the microscopic mechanisms that govern the structure-property relationships in this class of solvents. Complex hydrogen bonding is postulated as the root cause of their melting point depressions and physicochemical properties; to understand these hydrogen bonded networks, it is imperative to study these systems as dynamic entities using both simulations and experiments. This review emphasizes recent research efforts in order to elucidate the next steps needed to develop a fundamental framework needed for a deeper understanding of DESs. It covers recent developments in DES research, frames outstanding scientific questions, and identifies promising research thrusts aligned with the advancement of the field toward predictive models and fundamental understanding of these solvents.
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Affiliation(s)
- Benworth B Hansen
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee37996-2200, United States
| | - Stephanie Spittle
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee37996-2200, United States
| | - Brian Chen
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Derrick Poe
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Yong Zhang
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jeffrey M Klein
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Alexandre Horton
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee37996-2200, United States
| | - Laxmi Adhikari
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United States
| | - Tamar Zelovich
- Department of Chemistry, New York University, New York, New York 10003, United States
| | - Brian W Doherty
- Department of Chemistry, New York University, New York, New York 10003, United States
| | - Burcu Gurkan
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Edward J Maginn
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Arthur Ragauskas
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee37996-2200, United States
| | - Mark Dadmun
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37916, United States
| | - Thomas A Zawodzinski
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee37996-2200, United States
| | - Gary A Baker
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United States
| | - Mark E Tuckerman
- Department of Chemistry, New York University, New York, New York 10003, United States
| | - Robert F Savinell
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Joshua R Sangoro
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee37996-2200, United States
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Smith PJ, Arroyo CB, Lopez Hernandez F, Goeltz JC. Ternary Deep Eutectic Solvent Behavior of Water and Urea–Choline Chloride Mixtures. J Phys Chem B 2019; 123:5302-5306. [DOI: 10.1021/acs.jpcb.8b12322] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Parker J. Smith
- School of Natural Sciences, California State University, Monterey Bay, 100 Campus Center, Seaside, California 93955, United States
| | - Crystal B. Arroyo
- Hartnell College, 411 Central Avenue, Salinas, California 93901, United States
| | | | - John C. Goeltz
- School of Natural Sciences, California State University, Monterey Bay, 100 Campus Center, Seaside, California 93955, United States
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Li X, Ren Z, Wu Z, Fu Z, Xie H, Deng L, Jiang X, Chen D. Steric Effect of Antioxidant Diels-Alder-Type Adducts: A Comparison of Sanggenon C with Sanggenon D. Molecules 2018; 23:molecules23102610. [PMID: 30314378 PMCID: PMC6222520 DOI: 10.3390/molecules23102610] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 12/30/2022] Open
Abstract
Sanggenons C and D are two Diels-Alder-type adducts from Chinese crude drug Sang-bai-pi. Structurally, both sanggenons construct stereoisomers. In the study, they were comparatively determined using four antioxidant assays, including ferric ion reducing antioxidant power (FRAP) assay, Cu2+-reducing assay, 1,1-diphenyl-2-picryl-hydrazl (DPPH•)-scavenging assay, and 2,2′-azino-bis (3-ethylbenzo-thiazoline-6-sulfonic acid radical (ABTS•+)-scavenging assay. Their Fe2+-binding reactions were explored using UV-Vis spectra. Finally, their cytoprotective effects were evaluated using flow cytometry. In electron transfer (ET)-based FRAP and Cu2+-reducing assays, sanggenon D was found to have lower IC50 values than sanggenon C; however, in multi-pathway-based DPPH•-scavenging and ABTS•+-scavenging assays, sanggenon C possessed lower IC50 values than sanggenon D. UV-Vis spectra suggested that sanggenon C generated a bathochromic-shift (286 nm → 302 nm) and displayed stronger UV absorption than sanggenon D. In flow cytometry, sanggenon C and sanggenon D, respectively, exhibited 31.1% and 42.0% early apoptosis-percentages towards oxidative-stressed mesenchymal stem cells (MSCs). In conclusion, both sanggenons may undergo multiple pathways (e.g., ET and Fe2+-binding) to protect MSCs against oxidative stress. In the mere ET aspect, sanggenon D possesses a higher level than sanggenon C, while in multi-pathway-based radical-scavenging, Fe2+-binding, and cytoprotection aspects, sanggenon C is more active than sanggenon D. These discrepancies can conclusively be attributed to the steric effect.
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Affiliation(s)
- Xican Li
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
- Innovative Research & Development Laboratory of TCM, Guangzhou 510006, China.
| | - Zhenxing Ren
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
- The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
| | - Zimei Wu
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
- The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
| | - Zhen Fu
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
- The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
| | - Hong Xie
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
| | - Langyu Deng
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
| | - Xiaohua Jiang
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Sha Tin, Hong Kong 999077, China.
| | - Dongfeng Chen
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
- The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
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