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Saito N, Itoyama S, Takahashi R, Takahashi Y, Kondo Y. Synthesis and surface activity of photoresponsive hybrid surfactants containing both fluorocarbon and hydrocarbon chains. J Colloid Interface Sci 2021; 582:638-646. [PMID: 32911411 DOI: 10.1016/j.jcis.2020.08.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/14/2022]
Abstract
HYPOTHESIS Hybrid surfactants containing both alkyl and fluoroalkyl chains within the same molecule where modification of the azobenzene group will enable us to switch the superhydrophobic nature with an external light source, and the optical behavior will vary depending on the structure of the hydrophobic chains. EXPERIMENTS Surface activity and its optically-induced variation of the azobenzene-modified hybrid surfactants were characterized using the surface tensiometry, UV-vis and NMR spectroscopy and theoretical calculation. FINDINGS The hybrid surfactants are superhydrophobic in nature reducing the surface tension of water to near 20 mN/m. Photo-isomerization of the azobenzene group induces a drastic surface tension variation (Δγ), and particularly the compositions containing the octyl-fluorocarbon chain exhibit remarkable Δγ as much as 30 mN/m which is even higher than that of the conventional surfactants (Δγ ≈ 14-20 mN/m). Theoretical calculation suggests significantly higher hydrophilicity of the cis isomer, causing the drastic switch in the surface activity. These results indicate the promise of the hybrid surfactants as efficient surface/interface manipulators.
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Affiliation(s)
- Norio Saito
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan.
| | - Sekito Itoyama
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Rieko Takahashi
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Yutaka Takahashi
- New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - Yukishige Kondo
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan.
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Katz JR, Day IJ. Using Small-Molecule Probes to Investigate Aggregation of Sunset Yellow FCF: What are the Concentration Limits? J Phys Chem B 2019; 123:8987-8994. [PMID: 31560194 DOI: 10.1021/acs.jpcb.9b07997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The assembly of small molecules into larger structures, often driven by noncovalent interactions such as hydrogen bonding, aromatic stacking interactions, and burial of hydrophobic surface, is of widespread interest. The interaction of small molecules with aggregates also has a large range of applications from fluorescence aggregation assays to gas storage in framework materials. Here, we utilize nuclear magnetic resonance spectroscopy to investigate the interaction of a small-molecule probe on the assembly state of sunset yellow across a wide range of relative concentrations. Information from both macroscopic (diffusion) and microscopic (chemical shifts) measurements allows the interaction to be studied and the binding mode to be interrogated. Using fluorophenol as the small-molecule probe, we show that the aggregation behavior of sunset yellow is broadly unaffected by the relative amount of fluorophenol added.
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Affiliation(s)
- Jonathan R Katz
- School of Life Sciences , University of Sussex , Falmer , Brighton BN1 9QJ , U.K
| | - Iain J Day
- School of Life Sciences , University of Sussex , Falmer , Brighton BN1 9QJ , U.K
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3
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Maity A, Bera S, Rajak KK. Synthesis and comparative studies of photophysical and electrochemical properties of three different types of new heteroleptic 5-arylazo-8-hydroxyquinoline complexes of rhodium including trans → cis isomerism studies. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.02.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Maity A, Rajak KK. Photo induced trans→cis isomerism studies of heteroleptic iridium complex with 8-quinolinol-5-phenylazo ligand: Photophysical and electrochemical studies and it's theoretical investigations. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.12.060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Al-Ansari IAZ. Role of Solvent Polarity and Hydrogen-Bonding on Excited-State Fluorescence of 3-[(E)-{4-[Dimethylamino]benzylidene}amino]-2-naphthoic Acid (DMAMN): Isomerization vs Rotomerization. J Phys Chem A 2018; 122:1838-1854. [PMID: 29381869 DOI: 10.1021/acs.jpca.7b11623] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The present experimental and theoretical study on a new chromophore DMAMN of the type push-π-pull (push = dimethylaniline, π = imine, pull = 2-naphthoic acid), allows understanding of the mechanism by which the molecular conformational undergoes isomerization/rotomerization following electronic excitation. The steady-state fluorescence spectra of this compound, carried out in solvents of different polarities and proticities, showed significant changes in both the shape and peak positions. The wavelength and intensity change depend on the polarity and hydrogen-bonding environment. In highly polar solvents, the emission is weak and red-shifted compared to that for cyclohexane, but it is more red-shifted in moderate aprotic polar solvents. In hydroxyl solvents, a new weak low-energy emission band appears at ∼525 nm, attributed to the intermolecularly H-bonded open conformer. On the basis of the generated potential energy landscapes of the ground state and low-lying excited state in the gas phase and solution, we found that selective photon absorption, brings this molecule to a "bright" state, from which N═C isomerization Z → E, takes place. This isomerization in gas-phase and low-polarity solvents leads to two minima with a barrier, whereas in highly polar-protic media, it gives one minimum on the S1 surface with low ΔES1/T1 (0.17 eV), facilitating deactivation via ISC.
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Affiliation(s)
- Ibrahim Ahmed Z Al-Ansari
- Department of Chemistry & Earth Sciences, College of Arts & Sciences, Qatar University , P.O. Box 2713, Doha, Qatar
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6
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Dolinski ND, Page ZA, Eisenreich F, Niu J, Hecht S, Read de Alaniz J, Hawker CJ. A Versatile Approach for In Situ Monitoring of Photoswitches and Photopolymerizations. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201600045] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Neil D. Dolinski
- Materials Department, Materials Research Laboratory, UCSB University of California Santa Barbara CA 93106 USA
| | - Zachariah A. Page
- Materials Department, Materials Research Laboratory, UCSB University of California Santa Barbara CA 93106 USA
| | - Fabian Eisenreich
- Materials Department, Materials Research Laboratory, UCSB University of California Santa Barbara CA 93106 USA
- Department of Chemistry and IRIS Adlershof Humboldt-Universität zu Berlin Brook-Taylor-Str. 2 12489 Berlin Germany
| | - Jia Niu
- Materials Department, Materials Research Laboratory, UCSB University of California Santa Barbara CA 93106 USA
| | - Stefan Hecht
- Department of Chemistry and IRIS Adlershof Humboldt-Universität zu Berlin Brook-Taylor-Str. 2 12489 Berlin Germany
| | - Javier Read de Alaniz
- Department of Chemistry and Biochemistry, UCSB University of California Santa Barbara CA 93106 USA
| | - Craig J. Hawker
- Materials Department, Materials Research Laboratory, UCSB University of California Santa Barbara CA 93106 USA
- Department of Chemistry and Biochemistry, UCSB University of California Santa Barbara CA 93106 USA
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Mills A, O’Rourke C. In Situ, Simultaneous Irradiation and Monitoring of a Photocatalyzed Organic Oxidation Reaction in a TiO2-Coated NMR Tube. J Org Chem 2015; 80:10342-5. [DOI: 10.1021/acs.joc.5b01001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrew Mills
- School of Chemistry and Chemical
Engineering, Queen’s University Belfast, Stranmillis Road, Belfast, BT9 5AG, United Kingdom
| | - Christopher O’Rourke
- School of Chemistry and Chemical
Engineering, Queen’s University Belfast, Stranmillis Road, Belfast, BT9 5AG, United Kingdom
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Briffitt R, Day IJ. Influence of structural isomerism and fluorine atom substitution on the self-association of naphthoic acid. J Phys Chem B 2015; 119:6703-10. [PMID: 25973655 DOI: 10.1021/acs.jpcb.5b02381] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The self-association of small aromatic systems driven by π-π stacking and hydrophobic interactions is well-known. Understanding the nature of these interactions is important if they are to be used to control association. Here, we present results of an NMR study into the self-association of two isomers of naphthoic acid along with an investigation into the role of a fluorine substituent on that self-association. We interpret the results in terms of a simple isodesmic model of self-association and show that the addition of the fluorine atom appears to increase the stability of the aggregates by an order of magnitude (e.g., 1-naphthoic acid vs 4-fluoro-1-naphthoic acid, Keq = 0.05 increases to 0.35 M(-1)), a result which is supported by computational studies in the literature on the role of substituent effects on interaction energy. The use of fluorinated isomers to probe the assembly is also presented, with differing trends in fluorine-19 chemical shifts observed depending on the isomer substitution pattern.
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Affiliation(s)
- Roseanne Briffitt
- School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QJ, U.K
| | - Iain J Day
- School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QJ, U.K
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Katz JR, Day LJ, Day IJ. NMR Investigations of the Interaction Between the Azo-Dye Sunset Yellow and Fluorophenol. J Phys Chem B 2013; 117:11793-800. [DOI: 10.1021/jp407686p] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jonathan R. Katz
- School
of Life Sciences, University of Sussex, Falmer, Brighton, BN1 9QJ, United Kingdom
| | - Lucy J. Day
- BHASVIC, 205 Dyke Road, Hove, East Sussex, BN3
6EG, United Kingdom
| | - Iain J. Day
- School
of Life Sciences, University of Sussex, Falmer, Brighton, BN1 9QJ, United Kingdom
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Luo Y, Utecht M, Dokić J, Korchak S, Vieth HM, Haag R, Saalfrank P. cis-trans Isomerisation of Substituted Aromatic Imines: A Comparative Experimental and Theoretical Study. Chemphyschem 2011; 12:2311-21. [DOI: 10.1002/cphc.201100179] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Indexed: 11/11/2022]
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11
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Renshaw MP, Day IJ. NMR Characterization of the Aggregation State of the Azo Dye Sunset Yellow in the Isotropic Phase. J Phys Chem B 2010; 114:10032-8. [DOI: 10.1021/jp104356m] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew P. Renshaw
- Department of Chemistry and Biochemistry, School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QJ, U.K
| | - Iain J. Day
- Department of Chemistry and Biochemistry, School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QJ, U.K
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12
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Ball GE. In situ photochemistry with NMR detection of organometallic complexes. SPECTROSCOPIC PROPERTIES OF INORGANIC AND ORGANOMETALLIC COMPOUNDS 2010. [DOI: 10.1039/9781849730853-00262] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A review focusing on the application of NMR spectroscopy to the study of organometallic photochemistry where the photochemical step is performed in situ, i.e. the irradiation of the sample takes place within the probe of the NMR spectrometer. Various experimental designs, taken from all areas of chemical and biological study, that facilitate in situ irradiation are discussed, paying attention to light sources and light delivery methods. The literature covering the application of the in situ method across the field of organometallic chemistry is then reviewed. There is particular emphasis on studies of reactive organometallic compounds with weakly coordinating ligands such as alkane, xenon and other “solvent” species, as complexes with short lifetimes benefit most from application of the in situ illumination method.
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Affiliation(s)
- Graham E. Ball
- School of Chemistry, University of New South Wales UNSW Sydney 2052, Australia
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13
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Wazzan NA, Richardson PR, Jones AC. Cis-Trans isomerisation of azobenzenes studied by laser-coupled NMR spectroscopy and DFT calculations. Photochem Photobiol Sci 2010; 9:968-74. [DOI: 10.1039/c0pp00056f] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Henry JB, Mount AR. Calculation of the Redox Properties of Aromatics and Prediction of Their Coupling Mechanism and Oligomer Redox Properties. J Phys Chem A 2009; 113:13023-8. [PMID: 19799452 DOI: 10.1021/jp907792b] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- John B. Henry
- School of Chemistry, The University of Edinburgh, King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Andrew R. Mount
- School of Chemistry, The University of Edinburgh, King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
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Tolstoy P, Koeppe B, Denisov G, Limbach HH. Combined NMR and UV/Vis Spectroscopy in the Solution State: Study of the Geometries of Strong OHO Hydrogen Bonds of Phenols with Carboxylic Acids. Angew Chem Int Ed Engl 2009; 48:5745-7. [DOI: 10.1002/anie.200806181] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Tolstoy P, Koeppe B, Denisov G, Limbach HH. Kombinierte Flüssigkeits-NMR- und UV/Vis-Spektroskopie: Untersuchung der Struktur starker OHO-Wasserstoffbrücken von Phenolen mit Carbonsäuren. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200806181] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Gibson DI, Parkinson JA, Jones AC, Ebenezer WJ, Hutchings MG. Reversible cyclisation of a sulfonated arylazo compound containing an o-acetylamino substituent. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2007.12.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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