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Ali H, Goswami D. Demonstration of Solute-specific Synergism in Binary Solvents. J Fluoresc 2023:10.1007/s10895-022-03141-8. [PMID: 36645530 DOI: 10.1007/s10895-022-03141-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 12/29/2022] [Indexed: 01/17/2023]
Abstract
The structure and solvation behavior of binary liquid mixtures of Methanol (MeOH) and N, N-Dimethylformamide (DMF) are explored by ascertaining their intermolecular interactions with either Rhodamine-B (RhB) or Rhodamine101 (Rh101) dye through steady-state absorption, emission, and two-photon induced fluorescence. Specifically, in the present investigation, we examine the strong synergistic solvation observed for the combinations of hydrogen bond donating (MeOH) and accepting (DMF) solvent pairs. Solvatochromism causes the solvatochromic probe molecules to sense increased polarity compared to their bulk counterparts. The origin of synergism was explained in terms of solute-solvent and solvent-solvent interactions in binary solvent mixtures interactions, as evidenced by probe dependence. The solvation behavior of the Methanol and DMF binary solvent mixture shows strong probe dependence, with Rh101 showing synergism while RhB does not.
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Affiliation(s)
- Habib Ali
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Debabrata Goswami
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
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2
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Polok K, Subba N, Gadomski W, Sen P. Search for the origin of synergistic solvation in methanol/chloroform mixture using optical Kerr effect spectroscopy. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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3
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Pal D, Chakraborty A, Chakraborty S. Investigation of [CHCl3-CH3OH] complex using matrix-isolation IR spectroscopy and quantum chemical calculation: Evidence of hydrogen- and halogen-bonding interaction. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111451] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Gupta RK, Kant S, Rawat AK, Goswami D. Two-Photon-Induced Fluorescence Study of Rhodamine-6G Dye in Different Sets of Binary Solvents. J Fluoresc 2020; 30:1043-1048. [PMID: 32613438 DOI: 10.1007/s10895-020-02577-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/23/2020] [Indexed: 11/29/2022]
Abstract
This study deals with the effects of different sets of binary solvents on the Two-Photon Induced Fluorescence (TPIF), a non-linear process, of the Rhodamine-6G (Rh6G) dye, which is a well-known xanthene dye. This work examines the importance of inter-molecular interactions, which results in the modulation of the TPIF of the Rh6G. In this work, we have investigated three binary solvent mixtures representing varying polarity and intermolecular interactions. Specific solvent mixtures used are methanol-water, methanol-dimethyl formamide, and methanol-chloroform. Since the solvent polarity across these binary solvents differs, there are significant intermolecular interactions in the binary mixture solvents, which modulate the two-photon process of Rh6G when irradiated with high-intensity laser light at 780 nm. In our studies, we find that Rh6G in the MeOH-H2O binary solvent has maximum red-shift and minimum intensity as compared to other pairs of binary liquids when the volume fraction of methanol decreases due to more extensive hydrogen bonding between the two components. Additionally, at 1:1 ratio of binary mixtures, Rh6G is found to have the highest TPEACS value for methanol-chloroform binary solvent and reason for that is related to the formation of weak H-bond networks between proton donor chloroform and proton acceptor methanol.
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Affiliation(s)
- Rahul Kumar Gupta
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Surya Kant
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Ashwini Kumar Rawat
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Debabrata Goswami
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
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5
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Yin B, Gu J, Feng M, Zhang GC, Zhang Z, Zhong J, Zhang C, Wen B, Zhao YS. Epitaxial growth of dual-color-emitting organic heterostructures via binary solvent synergism driven sequential crystallization. NANOSCALE 2019; 11:7111-7116. [PMID: 30644935 DOI: 10.1039/c8nr08066f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The controlled construction of organic heterostructured architectures derived from molecules with similar nucleation thresholds and concentrations has been rare and remains a great challenge. Herein, we report a sequential epitaxial growth to synthesize dual-color-emitting organic heterostructures with 9,10-bis(phenylethynyl)anthracene (BPEA) microwire trunks and tris-(8-hydroxyquinoline)aluminium (Alq3) microstructure branches by an anti-solvent induced sequential crystallization strategy. During the epitaxial growth process, the hydrogen-bonding interactions of the anti-solvent and solvent cause a large change in the solubility and crystallization rate of BPEA and Alq3 molecules in the mixed system, which facilitates sequential crystallization of organic molecule pairs with similar nucleation thresholds and concentrations into desired heterostructures by manipulating the synergism of anti-solvents and solvents. The Förster resonant energy transfer process in heterostructures could be modulated by varying the structure of heterostructures, such as the shape, amount and angles of the branches. The present synthesis strategy provides a unique insight into the detailed formation mechanism of complex organic heterostructures, further guiding the construction of more functional heterostructure materials.
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Affiliation(s)
- Baipeng Yin
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.
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6
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Dangui AZ, Santos VMS, Gomes BS, de Castilho TS, Nicolini KP, Nicolini J. Preferential solvation bromophenol blue in water-alcohol binary mixture. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 203:333-341. [PMID: 29885632 DOI: 10.1016/j.saa.2018.05.087] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 05/16/2018] [Accepted: 05/27/2018] [Indexed: 06/08/2023]
Abstract
In this study, the perichromic behavior of bromophenol blue (BPB) in various binary solvent mixtures was investigated. The binary mixtures considered were comprised of water and methanol (MeOH), ethanol (EtOH), n-propanol (n-PrOH), isopropanol (iso-PrOH) or t-butanol (t-BuOH). The investigation of a preferential solvation model that considers the addition of small quantities of alcohol to water in the presence of bromophenol blue (BPB) is described in this paper. The data obtained were employed to study the preferential solvation (PS) of the probe. It was observed that with increases in the molar fraction of water the spontaneity of the system decreases. This can be explained by the high solubility of BPB in ethanol, with ∆G > 0 at higher wavelengths (region rich in water with violet solution) and ∆G < 0 at lower wavelengths (region rich in alcohol with yellow solution). The pK of the binary mixture changed in all solvents and for all ratios, and the higher the water ratio is the lower the pKIn will be. In binary mixture, an increase in the hydrogen bond acceptor (HBA) nature of the solvents tested resulted in a bathochromic effect on the absorption band of BPB (Δλ = 12 nm). All of the data obtained showed a good nonlinear fit with the mathematical model (SD ≤ 6.6 × 10-3), suggesting that BPB has other potential applications besides its use as a pH indicator.
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Affiliation(s)
- Anayana Z Dangui
- Instituto Federal do Paraná - IFPR, Lacoppi - Laboratório de Corantes e Processos Pirolíticos, Departamento de Química, Palmas, PR 85.555-000, Brazil
| | - Vanessa M S Santos
- Instituto Federal do Paraná - IFPR, Lacoppi - Laboratório de Corantes e Processos Pirolíticos, Departamento de Química, Palmas, PR 85.555-000, Brazil
| | - Benhur S Gomes
- Instituto Federal do Paraná - IFPR, Lacoppi - Laboratório de Corantes e Processos Pirolíticos, Departamento de Química, Palmas, PR 85.555-000, Brazil
| | - Taiane S de Castilho
- Instituto Federal do Paraná - IFPR, Lacoppi - Laboratório de Corantes e Processos Pirolíticos, Departamento de Química, Palmas, PR 85.555-000, Brazil
| | - Keller P Nicolini
- Instituto Federal do Paraná - IFPR, Lacoppi - Laboratório de Corantes e Processos Pirolíticos, Departamento de Química, Palmas, PR 85.555-000, Brazil
| | - Jaqueline Nicolini
- Instituto Federal do Paraná - IFPR, Lacoppi - Laboratório de Corantes e Processos Pirolíticos, Departamento de Química, Palmas, PR 85.555-000, Brazil.
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7
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Li G, Huang L, Yi X, Peng YK, Tsang SCE, Zheng A. A nonpolar solvent effect by CH/π interaction inside zeolites: characterization, mechanism and concept. Chem Commun (Camb) 2018; 54:13435-13438. [DOI: 10.1039/c8cc08310j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The acidity enhancement induced by the nonpolar solvent effect of naphthalene inside zeolites was unambiguously identified.
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Affiliation(s)
- Guangchao Li
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Key Laboratory of Magnetic Resonance in Biological Systems
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Ling Huang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Key Laboratory of Magnetic Resonance in Biological Systems
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Xianfeng Yi
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Key Laboratory of Magnetic Resonance in Biological Systems
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Yung-Kang Peng
- Department of Chemistry
- City University of Hong Kong
- Kowloon
- P. R. China
| | - Shik Chi Edman Tsang
- The Wolfson Catalysis Centre
- Department of Chemistry
- University of Oxford
- Oxford OX1 3QR
- UK
| | - Anmin Zheng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Key Laboratory of Magnetic Resonance in Biological Systems
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
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8
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Mixed Solvent Chemistry through Synergistic Solvation: Structure, Property and Function of t-Butanol—Dichloromethane Binary Solvent Mixtures. J SOLUTION CHEM 2017. [DOI: 10.1007/s10953-017-0586-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Biswas B, Mondal S, Singh PC. Role of Hydrogen Bond in the Solvation Behavior of the Binary Mixtures Containing Fluorocarbon Alcohol Molecules and Chloroform: An Experimental and Theoretical Study. ChemistrySelect 2016. [DOI: 10.1002/slct.201601118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Biswajit Biswas
- Department of Spectroscopy; Indian Association for the Cultivation of Science; Kolkata 700032 India
| | - Saptarsi Mondal
- Department of Spectroscopy; Indian Association for the Cultivation of Science; Kolkata 700032 India
| | - Prashant C. Singh
- Department of Spectroscopy; Indian Association for the Cultivation of Science; Kolkata 700032 India
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10
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Gupta S, Chakraborty A, Sen P. Elucidation of intriguing methanol-dichloromethane binary solvent mixture: Synergistic effect, analytical modeling, NMR and photo-induced electron transfer studies. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.08.048] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Valvi A, Tiwari S. Concentration-dependent solvent effect on the SNAr reaction between 1-fluoro-2,4-dinitrobenzene and morpholine. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3615] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Arun Valvi
- Department of Chemistry; Institute of Chemical Technology; Mumbai India
| | - Shraeddha Tiwari
- Department of Chemistry; Institute of Chemical Technology; Mumbai India
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12
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Gupta S. Solvation chemistry through synergism: static and dynamic features of n-amyl alcohol–chloroform binary solvent mixture. RSC Adv 2016. [DOI: 10.1039/c6ra23231k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this paper, we shed some light on the origin of the synergistic solvation structure in a n-amyl alcohol–chloroform (n-PtOH–CHCl3) binary solvent mixture.
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Ormazabal-Toledo R, Santos JG, Ríos P, Castro EA, Campodónico PR, Contreras R. Hydrogen Bond Contribution to Preferential Solvation in SNAr Reactions. J Phys Chem B 2013; 117:5908-15. [DOI: 10.1021/jp4005295] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rodrigo Ormazabal-Toledo
- Departamento de Química,
Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
| | - José G. Santos
- Facultad de Química, Pontificia Universidad Católica de Chile, Casilla
306, Santiago 6094411, Chile
| | - Paulina Ríos
- Facultad de Química, Pontificia Universidad Católica de Chile, Casilla
306, Santiago 6094411, Chile
| | - Enrique A. Castro
- Facultad de Química, Pontificia Universidad Católica de Chile, Casilla
306, Santiago 6094411, Chile
| | - Paola R. Campodónico
- Instituto de Ciencias, Facultad
de Medicina, Clínica Alemana Universidad del Desarrollo, Santiago 7710162, Chile
| | - Renato Contreras
- Departamento de Química,
Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
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14
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Ormazábal-Toledo R, Contreras R, Tapia RA, Campodónico PR. Specific nucleophile–electrophile interactions in nucleophilic aromatic substitutions. Org Biomol Chem 2013; 11:2302-9. [DOI: 10.1039/c3ob27450k] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Gupta S, Rather SR, Kundu M, Sen P. Origin of strong synergism in weakly perturbed binary solvent system: a case study of primary alcohols and chlorinated methanes. J Phys Chem B 2012; 116:1345-55. [PMID: 22200245 DOI: 10.1021/jp207741h] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A strong synergistic solvation was observed for the mixtures of hydrogen bond donating and accepting solvent pairs. The nature of the interactions between two solvent pairs was investigated with different dye molecules viz. coumarin 480, coumarin 153, 4-aminophthalimide, and p-nitroaniline. Coumarin 480 in differenet alcohols-CHCl(3) (alcohols: MeOH, EtOH, BuOH) binary mixture shows a strong synergism, which is explained in the backdrop of solvent-solvent interactions. Fluorescence quenching of C480 by 1,2-phenylenediamine in the binary solvent mixture exhibited the maximum deviation in quenching constant corresponding to ~0.45 mol fraction of MeOH in MeOH-CHCl(3) binary mixture and hence suggested the maximum extent of hydrogen-bonding interactions prevailing at this proportion of mixture. The solvation behavior of MeOH-CHCl(3) mixture shows strong probe dependence with no synergism observed in p-nitroaniline, which is ascribed to its higher ground state dipole moment (8.8 D) relative to C480 (6.3 D). Interestingly, the strong synergistic signature observed through spectrophotometric measurement of C480 in alcohol-CHCl(3) binary mixture is absent when studied by fluorescence measurement. The higher excited state dipole moment of coumarin 480 (13.1 D) is considered to be the driving force for the absence of synergism in the excited state. In such strongly perturbed systems (due to high dipole moment values) the dominant phenomenon is preferential solvation. Analysis of proton NMR of MeOH-CHCl(3) binary solvent mixture indicates the existence of MeOH-CHCl(3) clusters in the stoichiometric ratio of 1:2.15. Refractive index measurement also infers the existence of hydrogen bonded network structure between MeOH and CHCl(3). A modified Bosch solvent exchange model has been used to determine the feasibility of synergistic behavior and polarity parameter of the mixed solvent structure of MeOH-CHCl(3) binary solvent mixture.
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Affiliation(s)
- Shradhey Gupta
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, UP, PIN-208 016, India
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16
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Chromogenic anionic chemosensors based on protonated merocyanine solvatochromic dyes in trichloromethane and in trichloromethane–water biphasic system. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.03.049] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Adam CG, Fortunato GG, Mancini PM. Nucleophilic and acid catalyst behavior of a protic ionic liquid in a molecular reaction media. Part 1. J PHYS ORG CHEM 2008. [DOI: 10.1002/poc.1501] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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Mancini PM, Fortunato GG, Adam CG, Vottero LR. Solvent effects on chemical processes: new solvents designed on the basis of the molecular–microscopic properties of (molecular solvent + 1,3-dialkylimidazolium) binary mixtures. J PHYS ORG CHEM 2008. [DOI: 10.1002/poc.1227] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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19
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Butterfield SM, Rebek J. A cavitand stabilizes the Meisenheimer complex of SNAr reactions. Chem Commun (Camb) 2007:1605-7. [PMID: 17530074 DOI: 10.1039/b700319f] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A deep cavitand binds amine nucleophiles and accelerates their subsequent S(N)Ar reactions by solvating the intermediate Meisenheimer complex.
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Affiliation(s)
- Sara M Butterfield
- The Skaggs Institute for Chemical Biology and The Department of Chemistry, The Scripps Research Institute, MB-26, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
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El Seoud OA, Siviero F. Kinetics of the pH-independent hydrolyses of 4-nitrophenyl chloroformate and 4-nitrophenyl heptafluorobutyrate in water-acetonitrile mixtures: consequences of solvent composition and ester hydrophobicity. J PHYS ORG CHEM 2007. [DOI: 10.1002/poc.1081] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Reis DC, Machado C, Machado VG. An anionic chromogenic sensor based on protonated Reichardt’s pyridiniophenolate. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.10.109] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Martins CT, Lima MS, El Seoud OA. A novel, convenient, quinoline-based merocyanine dye: probing solvation in pure and mixed solvents and in the interfacial region of an anionic micelle. J PHYS ORG CHEM 2005. [DOI: 10.1002/poc.975] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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23
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Herodes K, Leito I, Koppel J, Reichardt C, Koppel IA. UV-Vis spectroscopic study of the hydrophilic and solvatochromic 4-[2,6-diphenyl-4-(pyridin-4-yl)pyridinium-1-yl]-2,6-bis(pyridin-3-yl)phenolate betaine dye in aqueous tetra-n-butylammonium bromide. J PHYS ORG CHEM 2005. [DOI: 10.1002/poc.958] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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Tada EB, Silva PL, Tavares C, El Seoud OA. Thermo-solvatochromism of zwitterionic probes in aqueous aliphatic alcohols and in aqueous 2-alkoxyethanols: relevance to the enthalpies of activation of chemical reactions. J PHYS ORG CHEM 2005. [DOI: 10.1002/poc.887] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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Bevilaqua T, da Silva DC, Machado VG. Preferential solvation of Brooker's merocyanine in binary solvent mixtures composed of formamides and hydroxylic solvents. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2004; 60:951-958. [PMID: 15036108 DOI: 10.1016/s1386-1425(03)00324-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2003] [Accepted: 06/16/2003] [Indexed: 05/24/2023]
Abstract
The ET polarity values of 4-[(1-methyl-4(1H)-pyridinylidene)-ethylidene]-2,5-cyclohexadien-1-one (Brooker's merocyanine) were collected in mixed-solvent systems comprising a formamide [N,N-dimethylformamide (DMF), N-methylformamide (NMF) or formamide (FA)] and a hydroxylic (water, methanol, ethanol, propan-2-ol or butan-1-ol) solvent. Binary mixtures involving DMF and the other formamides (NMF and FA) as well as NMF and FA were also studied. These data were employed in the investigation of the preferential solvation (PS) of the probe. Each solvent system was analyzed in terms of both solute-solvent and solvent-solvent interactions. These latter interactions were responsible for the synergism observed in many binary mixtures. This synergistic behaviour was observed for DMF-propan-2-ol, DMF-butan-1-ol, FA-methanol, FA-ethanol and for the mixtures of the alcohols with NMF. All data were successfully fitted to a model based on solvent-exchange equilibria, which allowed the separation of the different contributions of the solvent species in the solvation shell of the dye. The results suggest that both hydrogen bonding and solvophobic interactions contribute to the formation of the solvent complexes responsible for the observed synergistic effects in the PS of the dye.
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Affiliation(s)
- Tharly Bevilaqua
- Centro Tecnológico, GRUCENSO, Pró-Reitoria Acadêmica, Universidade do Sul de Santa Catarina, CP 370, 88704-900 Tubarão, SC, Brazil
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26
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Herodes K, Koppel J, Reichardt C, Koppel IA. UV-visible spectroscopic study of the hydrophilic and solvatochromic 4-[2,6-diphenyl-4-(pyridin-4-yl)pyridinium-1-yl]-2,6-bis(pyridin-3-yl)phenolate betaine dye in eight binary solvent mixtures. J PHYS ORG CHEM 2003. [DOI: 10.1002/poc.656] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Tada EB, Silva PL, El Seoud OA. Thermo-solvatochromism of zwitterionic probes in aqueous alcohols: effects of the properties of the probe and the alcohol. Phys Chem Chem Phys 2003. [DOI: 10.1039/b308550c] [Citation(s) in RCA: 22] [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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28
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da Silva DC, Ricken I, Silva MADR, Machado VG. Solute-solvent and solvent-solvent interactions in the preferential solvation of Brooker's merocyanine in binary solvent mixtures. J PHYS ORG CHEM 2002. [DOI: 10.1002/poc.519] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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29
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Mancini PM, Fortunato G, Adam C, Vottero LR, Terenzani AJ. Specific and non-specific solvent effects on aromatic nucleophilic substitution. Kinetics of the reaction of 1-fluoro-2,6-dinitrobenzene and homopiperidine in binary solvent mixtures. J PHYS ORG CHEM 2002. [DOI: 10.1002/poc.476] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Mancini PM, Adam C, P�rez ADC, Vottero LR. Solvatochromism in binary solvent mixtures. Response models to the chemical properties of reference probes. J PHYS ORG CHEM 2000. [DOI: 10.1002/(sici)1099-1395(200004)13:4<221::aid-poc234>3.0.co;2-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Mancini PM, Terenzani A, Adam C, Pérez ADC, Vottero LR. Characterization of solvent mixtures: preferential solvation of chemical probes in binary solvent mixtures of polar hydrogen-bond acceptor solvents with polychlorinated co-solvents. J PHYS ORG CHEM 1999. [DOI: 10.1002/(sici)1099-1395(199909)12:9<713::aid-poc182>3.0.co;2-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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