1
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Selvaraj A, Cordier M, Devillard M, Alcaraz G. Synthesis of Photochromic Phosphines by Pd-Catalyzed Annulation Reaction of Alkynes Bearing Phosphinyl Substituent with a Silacyclopropene. Chemistry 2023; 29:e202302374. [PMID: 37639287 DOI: 10.1002/chem.202302374] [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: 07/25/2023] [Revised: 08/24/2023] [Accepted: 08/28/2023] [Indexed: 08/29/2023]
Abstract
The synthesis of phosphines with light controlled basicity is presented in this study. A methodological approach for the preparation of these unconventional photochromic phosphines based on a dithienylethene organic moiety is reported. It relies on the palladium-catalyzed annulation of alkynyl phosphines in the presence of a 2,3-Dithienylsilacyclopropene. Accordingly, a diphenyphosphino moiety is connected to the organic photochrome thanks to different linkers. Their influence on the photochromism and on the phosphinyl group basicity is studied and evaluated based on experimental an NMR descriptor as well as DFT calculations.
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Affiliation(s)
- Akshitha Selvaraj
- ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, Univ Rennes, CNRS, 35000, Rennes, France
| | - Marie Cordier
- ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, Univ Rennes, CNRS, 35000, Rennes, France
| | - Marc Devillard
- ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, Univ Rennes, CNRS, 35000, Rennes, France
| | - Gilles Alcaraz
- ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, Univ Rennes, CNRS, 35000, Rennes, France
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2
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Gupta D, Gaur AK, Kaur R, Ashish, Kaur N, Venkataramani S. Photoswitchable Azoheteroarene-Based Chelating Ligands: Light Modulation of Properties, Aqueous Solubility and Catalysis. Chemistry 2023; 29:e202301906. [PMID: 37477625 DOI: 10.1002/chem.202301906] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 07/22/2023]
Abstract
We report the design and synthesis of eight photoswitchable phenylazopyridine- and phenylazopyrazole-based molecular systems as chelation-type light-controllable ligands. Besides the studies on fundamental photoisomerization behaviour, the ligands were also screened for light-tuneable properties such as photochromism, phase transition, and solubility, especially in the aqueous medium. This investigation demonstrates how the modulation of aqueous solubility can be achieved through photoisomerization and can further be utilized towards controlling the amount of catalytically active Cu(I) species in the aqueous conditions. Through this approach, light control over the catalytic activity was achieved for Cu-catalyzed azide-alkyne cycloaddition (CuAAC) reactions, along with a partial recovery of the catalytically active species.
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Affiliation(s)
- Debapriya Gupta
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Knowledge City, Manauli, 140 306, India
| | - Ankit Kumar Gaur
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Knowledge City, Manauli, 140 306, India
| | - Ramanpreet Kaur
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Knowledge City, Manauli, 140 306, India
| | - Ashish
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Knowledge City, Manauli, 140 306, India
| | - Navneet Kaur
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Knowledge City, Manauli, 140 306, India
| | - Sugumar Venkataramani
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Knowledge City, Manauli, 140 306, India
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3
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Buß F, Das M, Janssen-Müller D, Sietmann A, Das A, Wilm LFB, Freitag M, Seidl M, Glorius F, Dielmann F. Photoswitchable electron-rich phosphines: using light to modulate the electron-donating ability of phosphines. Chem Commun (Camb) 2023; 59:12019-12022. [PMID: 37728017 DOI: 10.1039/d3cc04050j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
The synthesis and properties of photoswitchable electron-rich phosphines containing N-heterocyclic imines equipped with a photochromic dithienylethene unit are reported. Heteronuclear NMR spectroscopy and UV/vis studies reveal that the imine substituents undergo reversible electrocyclic ring-closing and ring-opening reactions upon exposure to UV and visible light, respectively. The photoisomerization alters the electron-donating ability of the phosphines by up to ΔTEP = 8 cm-1.
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Affiliation(s)
- Florenz Buß
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, Münster 48149, Germany
| | - Mowpriya Das
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, Münster 48149, Germany.
| | - Daniel Janssen-Müller
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, Münster 48149, Germany.
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstr. 2, Göttingen 37077, Germany
| | - Alexander Sietmann
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Center for Chemistry and Biomedicine, Innrain 80-82, Innsbruck A-6020, Austria.
| | - Ankita Das
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, Münster 48149, Germany.
| | - Lukas F B Wilm
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, Münster 48149, Germany
| | - Matthias Freitag
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, Münster 48149, Germany.
| | - Michael Seidl
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Center for Chemistry and Biomedicine, Innrain 80-82, Innsbruck A-6020, Austria.
| | - Frank Glorius
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, Münster 48149, Germany.
| | - Fabian Dielmann
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, Münster 48149, Germany
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Center for Chemistry and Biomedicine, Innrain 80-82, Innsbruck A-6020, Austria.
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4
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Kumar P, Gupta D, Grewal S, Srivastava A, Kumar Gaur A, Venkataramani S. Multiple Azoarenes Based Systems - Photoswitching, Supramolecular Chemistry and Application Prospects. CHEM REC 2022; 22:e202200074. [PMID: 35860915 DOI: 10.1002/tcr.202200074] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/16/2022] [Indexed: 11/05/2022]
Abstract
In the recent decades, the investigations on photoresponsive molecular systems with multiple azoarenes are quite popular in diverse perspectives ranging from fundamental understanding of multiple photoswitches, supramolecular chemistry, and various application prospects. In fact, several insightful and conceptual designs of such systems were investigated with architectural distinctions. In particular, the demonstration of applications such as data storage with the help of multistate or orthogonal photoswitches, light modulation of catalysis via cooperative switching, sensors using supramolecular host-guest interactions, and materials such as liquid crystals, grating, actuators, etc. are some of the milestones in this area. Herein, we cover the recent advancements in the research areas of multiazoarenes containing systems that have been classified into Type-1 {linear, non-linear, and core-based (A)}, Type-2 {tripodal C3 -symmetric (C3)} and Type-3 {macrocyclic (M)} structural motifs.
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Affiliation(s)
- Pravesh Kumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, SAS Nagar, Manauli (PO), Punjab, 140306, INDIA
| | - Debapriya Gupta
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, SAS Nagar, Manauli (PO), Punjab, 140306, INDIA
| | - Surbhi Grewal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, SAS Nagar, Manauli (PO), Punjab, 140306, INDIA
| | - Anjali Srivastava
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, SAS Nagar, Manauli (PO), Punjab, 140306, INDIA
| | - Ankit Kumar Gaur
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, SAS Nagar, Manauli (PO), Punjab, 140306, INDIA
| | - Sugumar Venkataramani
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, SAS Nagar, Manauli (PO), Punjab, 140306, INDIA
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5
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Cazorla C, Casimiro L, Arif T, Deo C, Goual N, Retailleau P, Métivier R, Xie J, Voituriez A, Marinetti A, Bogliotti N. Synthesis and properties of photoswitchable diphosphines and gold(I) complexes derived from azobenzenes. Dalton Trans 2021; 50:7284-7292. [PMID: 33955431 DOI: 10.1039/d1dt01080h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diphosphines displaying azobenzene scaffolds and the corresponding bis-gold chloride complexes have been prepared and fully characterized by photophysical, spectroscopic and X-ray diffraction studies. DFT calculations provide complementary information on their electronic, structural and spectroscopic properties. Comparative investigations have been carried out on compounds featuring phosphorus functions in the meta- and para-positions, respectively, with respect to the azo functions, as well as on diphosphines with an ortho-tetrafluoro substituted azobenzene core. The effects of the substitution patterns on structural and spectroscopic properties are discussed.
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Affiliation(s)
- Clément Cazorla
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France. and Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190, Gif-sur-Yvette, France.
| | - Lorenzo Casimiro
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190, Gif-sur-Yvette, France.
| | - Tanzeel Arif
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France. and Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190, Gif-sur-Yvette, France.
| | - Claire Deo
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190, Gif-sur-Yvette, France.
| | - Nawel Goual
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France.
| | - Pascal Retailleau
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France.
| | - Rémi Métivier
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190, Gif-sur-Yvette, France.
| | - Juan Xie
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190, Gif-sur-Yvette, France.
| | - Arnaud Voituriez
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France.
| | - Angela Marinetti
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France.
| | - Nicolas Bogliotti
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190, Gif-sur-Yvette, France.
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6
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Medici F, Goual N, Delattre V, Voituriez A, Marinetti A. Photoswitchable phosphines in catalysis. ChemCatChem 2020. [DOI: 10.1002/cctc.202000620] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Fabrizio Medici
- Université Paris-Saclay CNRS, Institut de Chimie des Substances Naturelles, UPR 2301 91198 Gif-sur-Yvette France
| | - Nawel Goual
- Université Paris-Saclay CNRS, Institut de Chimie des Substances Naturelles, UPR 2301 91198 Gif-sur-Yvette France
| | - Vincent Delattre
- Université Paris-Saclay CNRS, Institut de Chimie des Substances Naturelles, UPR 2301 91198 Gif-sur-Yvette France
| | - Arnaud Voituriez
- Université Paris-Saclay CNRS, Institut de Chimie des Substances Naturelles, UPR 2301 91198 Gif-sur-Yvette France
| | - Angela Marinetti
- Université Paris-Saclay CNRS, Institut de Chimie des Substances Naturelles, UPR 2301 91198 Gif-sur-Yvette France
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7
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Photomechanical Molecular Crystals of an Azopyridine Derivative and Its Zinc(II) Complex: Synthesis, Crystallization and Photoinduced Motion. CRYSTALS 2020. [DOI: 10.3390/cryst10020092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
In this work, photomechanical molecular crystals of 4-(4-(6-Hydroxyhexyloxy) phenylazo) pyridine (6cazpy) and its zinc(II) organic complex (complex-I) were synthesized and crystallized. DSC and TGA were used to characterize and compare properties of 6cazpy and its complex-I crystals. Photoinduced motions of 6cazpy crystals and its complex-I crystals were investigated and compared by UV/Vis irradiation. Bending away motions from the light source were observed from both 6cazpy crystals and its complex-I crystals. The bending away motion was attributed to the trans-to-cis photoisomerization of azopyridine derivatives in the crystalline phase. It is worth noting that the photomechanical properties of complex-I were enhanced by the formation of the ligand, which might be caused by the looser packing of molecules inside complex-I crystal. In addition, because of the existence of ligand, which combined two photoactive groups in each complex-I molecule, the isomerization reactions of these two photoactive groups in the molecules can increase the photomechanical movement ability of the crystal. It was also found that the crystal size and shape will affect the photoinduced movement of the crystals. PXRD and AFM were used to investigate the molecular mechanism and the surface topological change upon photoisomerization. The corresponding mechanism was proposed.
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8
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Abstract
Photoswitchable catalysis using organometallic complexes: a ligand design perspective.
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Affiliation(s)
- Zoraida Freixa
- Department of Applied Chemistry
- University of the Basque Country (UPV-EHU)
- San Sebastián
- Spain
- IKERBASQUE
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9
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Savchenko V, Koch M, Pavlov AS, Saphiannikova M, Guskova O. Stacks of Azobenzene Stars: Self-Assembly Scenario and Stabilising Forces Quantified in Computer Modelling. Molecules 2019; 24:E4387. [PMID: 31801297 PMCID: PMC6930662 DOI: 10.3390/molecules24234387] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 11/25/2019] [Accepted: 11/28/2019] [Indexed: 12/27/2022] Open
Abstract
In this paper, the columnar supramolecular aggregates of photosensitive star-shaped azobenzenes with benzene-1,3,5-tricarboxamide core and azobenzene arms are analyzed theoretically by applying a combination of computer simulation techniques. Without a light stimulus, the azobenzene arms adopt the trans-state and build one-dimensional columns of stacked molecules during the first stage of the noncovalent association. These columnar aggregates represent the structural elements of more complex experimentally observed morphologies-fibers, spheres, gels, and others. Here, we determine the most favorable mutual orientations of the trans-stars in the stack in terms of (i) the π - π distance between the cores lengthwise the aggregate, (ii) the lateral displacements due to slippage and (iii) the rotation promoting the helical twist and chirality of the aggregate. To this end, we calculate the binding energy diagrams using density functional theory. The model predictions are further compared with available experimental data. The intermolecular forces responsible for the stability of the stacks in crystals are quantified using Hirshfeld surface analysis. Finally, to characterize the self-assembly mechanism of the stars in solution, we calculate the hydrogen bond lengths, the normalized dipole moments and the binding energies as functions of the columnar length. For this, molecular dynamics trajectories are analyzed. Finally, we conclude about the cooperative nature of the self-assembly of star-shaped azobenzenes with benzene-1,3,5-tricarboxamide core in aqueous solution.
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Affiliation(s)
- Vladyslav Savchenko
- Dresden Center for Computational Materials Science (DCMS), Technische Universität Dresden, 01062 Dresden, Germany; (V.S.); (M.S.)
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, 01069 Dresden, Germany;
| | - Markus Koch
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, 01069 Dresden, Germany;
| | - Aleksander S. Pavlov
- Department of Physical Chemistry, Faculty of Chemistry and Technology, Tver State University, Sadovyj per. 35, Tver 170002, Russia;
| | - Marina Saphiannikova
- Dresden Center for Computational Materials Science (DCMS), Technische Universität Dresden, 01062 Dresden, Germany; (V.S.); (M.S.)
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, 01069 Dresden, Germany;
| | - Olga Guskova
- Dresden Center for Computational Materials Science (DCMS), Technische Universität Dresden, 01062 Dresden, Germany; (V.S.); (M.S.)
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, 01069 Dresden, Germany;
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10
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Galanti A, Santoro J, Mannancherry R, Duez Q, Diez-Cabanes V, Valášek M, De Winter J, Cornil J, Gerbaux P, Mayor M, Samorì P. A New Class of Rigid Multi(azobenzene) Switches Featuring Electronic Decoupling: Unravelling the Isomerization in Individual Photochromes. J Am Chem Soc 2019; 141:9273-9283. [DOI: 10.1021/jacs.9b02544] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Agostino Galanti
- Université de Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Jasmin Santoro
- Karlsruhe Institute of Technology KIT, Institute of Nanotechnology, P.O. Box
3640, 76021 Karlsruhe, Germany
| | - Rajesh Mannancherry
- Department of Chemistry, University of Basel, St. Johannsring 19, 4056 Basel, Switzerland
| | - Quentin Duez
- Organic Synthesis and Mass Spectrometry Laboratory, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Valentin Diez-Cabanes
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Michal Valášek
- Karlsruhe Institute of Technology KIT, Institute of Nanotechnology, P.O. Box
3640, 76021 Karlsruhe, Germany
| | - Julien De Winter
- Organic Synthesis and Mass Spectrometry Laboratory, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Jérôme Cornil
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Pascal Gerbaux
- Organic Synthesis and Mass Spectrometry Laboratory, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Marcel Mayor
- Karlsruhe Institute of Technology KIT, Institute of Nanotechnology, P.O. Box
3640, 76021 Karlsruhe, Germany
- Department of Chemistry, University of Basel, St. Johannsring 19, 4056 Basel, Switzerland
- Lehn Institute of Functional Materials (LFM), School of Chemistry, Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - Paolo Samorì
- Université de Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
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11
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Markiewicz G, Walczak A, Perlitius F, Piasecka M, Harrowfield JM, Stefankiewicz AR. Photoswitchable transition metal complexes with azobenzene-functionalized imine-based ligands: structural and kinetic analysis. Dalton Trans 2018; 47:14254-14262. [DOI: 10.1039/c8dt00590g] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on the characterization of two imine type ligands containing photoresponsive azobenzene units as side groups and their transition metal ions complexes.
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Affiliation(s)
- G. Markiewicz
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
- Centre for Advanced Technologies
| | - A. Walczak
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
- Centre for Advanced Technologies
| | - F. Perlitius
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
- Centre for Advanced Technologies
| | - M. Piasecka
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
- Centre for Advanced Technologies
| | | | - A. R. Stefankiewicz
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
- Centre for Advanced Technologies
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12
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Koch M, Saphiannikova M, Santer S, Guskova O. Photoisomers of Azobenzene Star with a Flat Core: Theoretical Insights into Multiple States from DFT and MD Perspective. J Phys Chem B 2017; 121:8854-8867. [PMID: 28832166 DOI: 10.1021/acs.jpcb.7b07350] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study focuses on comparing physical properties of photoisomers of an azobenzene star with benzene-1,3,5-tricarboxamide core. Three azobenzene arms of the molecule undergo a reversible trans-cis isomerization upon UV-vis light illumination giving rise to multiple states from the planar all-trans one, via two mixed states to the kinked all-cis isomer. Employing density functional theory, we characterize the structural and photophysical properties of each state indicating a role the planar core plays in the coupling between azobenzene chromophores. To characterize the light-triggered switching of solvophilicity/solvophobicity of the star, the difference in solvation free energy is calculated for the transfer of an azobenzene star from its gas phase to implicit or explicit solvents. For the latter case, classical all-atom molecular dynamics simulations of aqueous solutions of azobenzene star are performed employing the polymer consistent force field to shed light on the thermodynamics of explicit hydration as a function of the isomerization state and on the structuring of water around the star. From the analysis of two contributions to the free energy of hydration, the nonpolar van der Waals and the electrostatic terms, it is concluded that isomerization specificity largely determines the polarity of the molecule and the solute-solvent electrostatic interactions. This convertible hydrophilicity/hydrophobicity together with readjustable occupied volume and the surface area accessible to water, affects the self-assembly/disassembly of the azobenzene star with a flat core triggered by light.
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Affiliation(s)
- Markus Koch
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden , Hohe Str. 6, 01069 Dresden, Germany.,Institute of Theoretical Physics, Technische Universität Dresden , Zellescher Weg 17, 01069 Dresden, Germany
| | - Marina Saphiannikova
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden , Hohe Str. 6, 01069 Dresden, Germany.,Dresden Center for Computational Materials Science (DCMS), Technische Universität Dresden , 01069 Dresden, Germany
| | - Svetlana Santer
- Institute of Physics and Astronomy, University of Potsdam , Karl-Liebknecht-Str. 24/25, 14476 Potsdam, Germany
| | - Olga Guskova
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden , Hohe Str. 6, 01069 Dresden, Germany.,Dresden Center for Computational Materials Science (DCMS), Technische Universität Dresden , 01069 Dresden, Germany
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13
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Ghebreyessus K, Cooper SM. Photoswitchable Arylazopyrazole-Based Ruthenium(II) Arene Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00493] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kesete Ghebreyessus
- Department of Chemistry and
Biochemistry, Hampton University, Hampton, Virginia 23668, United States
| | - Stefan M. Cooper
- Department of Chemistry and
Biochemistry, Hampton University, Hampton, Virginia 23668, United States
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14
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Volkov PA, Petrushenko KB, Ivanova NI, Khrapova KO, Larina LI, Gusarova NK, Trofimov BA. Oxidative coupling of hydroxy- or aminoazobenzenes with secondary phosphine chalcogenides: Towards new media-responsive molecular switches. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Ketels M, Konrad DB, Karaghiosoff K, Trauner D, Knochel P. Selective Lithiation, Magnesiation, and Zincation of Unsymmetrical Azobenzenes Using Continuous Flow. Org Lett 2017; 19:1666-1669. [DOI: 10.1021/acs.orglett.7b00460] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Marthe Ketels
- Department Chemie, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377 München, Germany
| | - David B. Konrad
- Department Chemie, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377 München, Germany
| | - Konstantin Karaghiosoff
- Department Chemie, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377 München, Germany
| | - Dirk Trauner
- Department Chemie, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377 München, Germany
| | - Paul Knochel
- Department Chemie, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377 München, Germany
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16
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Telleria A, van Leeuwen PWNM, Freixa Z. Azobenzene-based ruthenium(ii) catalysts for light-controlled hydrogen generation. Dalton Trans 2017; 46:3569-3578. [DOI: 10.1039/c7dt00542c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photo-controlled hydrogen generation catalysts were developed based on ruthenium(ii) azobenzene-containing half-sandwich complexes.
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Affiliation(s)
- A. Telleria
- Department of Applied Chemistry
- Faculty of Chemistry
- University of the Basque Country (UPV-EHU)
- 20080 San Sebastián
- Spain
| | | | - Z. Freixa
- Department of Applied Chemistry
- Faculty of Chemistry
- University of the Basque Country (UPV-EHU)
- 20080 San Sebastián
- Spain
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17
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Normand AT, Daniliuc CG, Kehr G, Le Gendre P, Erker G. Direct P-functionalization of azobenzene by a cationic phosphidozirconocene complex. Dalton Trans 2016; 45:3711-4. [DOI: 10.1039/c6dt00416d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Cooperation between zirconium and phosphorus enables the direct synthesis of a new PNN ligand via a spectrosopically characterized σH adduct.
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Affiliation(s)
- Adrien T. Normand
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
- Institut de Chimie Moléculaire de l'Université de Bourgogne
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Pierre Le Gendre
- Institut de Chimie Moléculaire de l'Université de Bourgogne
- ICMUB UMR6302
- CNRS
- F-21000 Dijon
- France
| | - Gerhard Erker
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
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18
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Kim JH, Koo E, Ju SY, Jang WD. Multimodal Stimuli-Responsive Poly(2-isopropyl-2-oxazoline) with Dual Molecular Logic Gate Operations. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01046] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Joo-Ho Kim
- Department
of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
| | - Eunhye Koo
- Department
of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
| | - Sang-Yong Ju
- Department
of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
| | - Woo-Dong Jang
- Department
of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
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19
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Strueben J, Lipfert M, Springer JO, Gould CA, Gates PJ, Sönnichsen FD, Staubitz A. High-yield lithiation of azobenzenes by tin-lithium exchange. Chemistry 2015; 21:11165-73. [PMID: 26118826 DOI: 10.1002/chem.201500003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Indexed: 11/05/2022]
Abstract
The lithiation of halogenated azobenzenes by halogen-lithium exchange commonly leads to substantial degradation of the azo group to give hydrazine derivatives besides the desired aryl lithium species. Yields of quenching reactions with electrophiles are therefore low. This work shows that a transmetalation reaction of easily accessible stannylated azobenzenes with methyllithium leads to a near-quantitative lithiation of azobenzenes in para, meta, and ortho positions. To investigate the scope of the reaction, various lithiated azobenzenes were quenched with a variety of electrophiles. Furthermore, mechanistic (119) Sn NMR spectroscopic studies on the formation of lithiated azobenzenes are presented. A tin ate complex of the azobenzene was detected and characterized at low temperature.
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Affiliation(s)
- Jan Strueben
- Otto-Diels-Institute for Organic Chemistry, University of Kiel, Otto-Hahn-Platz 3-4, 24098 Kiel (Germany)
| | - Matthias Lipfert
- Otto-Diels-Institute for Organic Chemistry, University of Kiel, Otto-Hahn-Platz 3-4, 24098 Kiel (Germany)
| | - Jan-Ole Springer
- Otto-Diels-Institute for Organic Chemistry, University of Kiel, Otto-Hahn-Platz 3-4, 24098 Kiel (Germany)
| | - Colin A Gould
- Otto-Diels-Institute for Organic Chemistry, University of Kiel, Otto-Hahn-Platz 3-4, 24098 Kiel (Germany)
| | - Paul J Gates
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS7 1TS (UK)
| | - Frank D Sönnichsen
- Otto-Diels-Institute for Organic Chemistry, University of Kiel, Otto-Hahn-Platz 3-4, 24098 Kiel (Germany)
| | - Anne Staubitz
- Otto-Diels-Institute for Organic Chemistry, University of Kiel, Otto-Hahn-Platz 3-4, 24098 Kiel (Germany).
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20
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Shcherbina MA, Bakirov AV, Yan L, Beginn U, Zhu X, Möller M, Chvalun SN. Self-assembling of tapered benzenesulfonate-based dendrons with bulky aromatic focal groups. MENDELEEV COMMUNICATIONS 2015. [DOI: 10.1016/j.mencom.2015.03.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Pérez-Miqueo J, Telleria A, Muñoz-Olasagasti M, Altube A, García-Lecina E, de Cózar A, Freixa Z. Azobenzene-functionalized iridium(iii) triscyclometalated complexes. Dalton Trans 2015; 44:2075-91. [DOI: 10.1039/c4dt02018a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photochromic triscyclometalated iridium(iii) organometallic complexes based on azobenzene-containing phenylpyridyl-type ligands.
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Affiliation(s)
- J. Pérez-Miqueo
- Department of Applied Chemistry
- Faculty of Chemistry
- University of the Basque Country (UPV-EHU)
- San Sebastián
- Spain
| | - A. Telleria
- Department of Applied Chemistry
- Faculty of Chemistry
- University of the Basque Country (UPV-EHU)
- San Sebastián
- Spain
| | - M. Muñoz-Olasagasti
- Department of Applied Chemistry
- Faculty of Chemistry
- University of the Basque Country (UPV-EHU)
- San Sebastián
- Spain
| | - A. Altube
- Surfaces Division
- IK4-CIDETEC
- San Sebastián
- Spain
| | | | - A. de Cózar
- Department of Organic Chemistry II
- Faculty of Chemistry
- University of the Basque Country (UPV-EHU)
- San Sebastián
- Spain
| | - Z. Freixa
- Department of Applied Chemistry
- Faculty of Chemistry
- University of the Basque Country (UPV-EHU)
- San Sebastián
- Spain
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22
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Abstract
We review molecular compounds encompassing several photochromic units with a focus on their functionalities.
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Affiliation(s)
- Arnaud Fihey
- Laboratoire CEISAM
- UMR CNRS 6230
- Université de Nantes
- 44322 Nantes Cedex 3
- France
| | - Aurélie Perrier
- Université Paris Diderot
- Sorbonne Paris Cité
- ITODYS
- UMR CNRS 7086
- 75205 Paris Cedex 13
| | - Wesley R. Browne
- Center for Systems Chemistry
- Stratingh Institute for Chemistry
- Faculty of Mathematics and Natural Sciences
- University of Groningen
- 9747AG Groningen
| | - Denis Jacquemin
- Laboratoire CEISAM
- UMR CNRS 6230
- Université de Nantes
- 44322 Nantes Cedex 3
- France
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23
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Moustafa ME, Boyle PD, Puddephatt RJ. Photoswitchable organoplatinum complexes containing an azobenzene derivative of 3,6-di(2-pyridyl)pyridazine. CAN J CHEM 2014. [DOI: 10.1139/cjc-2013-0588] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The new, unsymmetrical azobenzene-tagged ligand 4-(4-azobenzene)-3,6-di(2-pyridyl)pyridazine, adpp, forms complexes with platinum(II) and platinum(IV), which exist as a mixture of geometrical isomers. The complexes are characterized primarily by their NMR spectra, while the structures of the ligand and its complexes [PtMe2(adpp)], [PtBrMe2(CH2C6H4-4-t-Bu)(adpp)], and [PtBrMe2(CH2C6H3-3,5-t-Bu2)(adpp)] have been structurally characterized. In solution, the compounds undergo easy photochemical trans−cis switching of the azobenzene group, with subsequent slow thermal isomerization back to the more stable trans-azobenzene isomer.
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Affiliation(s)
- Mohamed E. Moustafa
- Department of Chemistry, University of Western Ontario, London, ON N6A 5B7, Canada
- Department of Chemistry, Faculty of Education, Suez Canal University, Arish, Egypt
| | - Paul D. Boyle
- Department of Chemistry, University of Western Ontario, London, ON N6A 5B7, Canada
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24
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Nguyen TTT, Boussonnière A, Banaszak E, Castanet AS, Nguyen KPP, Mortier J. Chemoselective deprotonative lithiation of azobenzenes: reactions and mechanisms. J Org Chem 2014; 79:2775-80. [PMID: 24568538 DOI: 10.1021/jo500230q] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Whereas standard strong bases (n-BuLi, s-BuLi/TMEDA, n-BuLi/t-BuOK, TMPMgCl·LiCl, and LDA) reduce the N═N bond of the parent azobenzene (Y = H), aromatic H→Li permutation occurs with LTMP when a suitable director of lithiation (Y = OMe, CONEt2, F) is present in the benzene residue of the azo compound. The method allows direct access to new substituted azobenzenes.
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Affiliation(s)
- Thi Thanh Thuy Nguyen
- Institut des Molécules et Matériaux du Mans, Faculté des Sciences et Techniques, Université du Maine and CNRS UMR 6283 , Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
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25
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26
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Chen WB, Li ZX, Ouyang ZJ, Lin WN, Yang L, Dong W. Syntheses, supramolecular structures, magnetic and photochromic properties of six lanthanide complexes based on the 5-azotetrazolyl salicylic acid ligand. RSC Adv 2014. [DOI: 10.1039/c4ra09951f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Six lanthanide complexes based on 5-azotetrazolyl salicylic acid were synthesized and their crystal structures, magnetic and photochromic properties were reported.
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Affiliation(s)
- Wen-Bin Chen
- Analytical and Testing Center
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou 510006, P. R. China
| | - Zhi-Xin Li
- Analytical and Testing Center
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou 510006, P. R. China
| | - Zhi-Jian Ouyang
- Analytical and Testing Center
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou 510006, P. R. China
| | - Wen-Ning Lin
- Analytical and Testing Center
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou 510006, P. R. China
| | - Liu Yang
- Analytical and Testing Center
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou 510006, P. R. China
| | - Wen Dong
- Analytical and Testing Center
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou 510006, P. R. China
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27
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Bahreman A, Limburg B, Siegler MA, Bouwman E, Bonnet S. Spontaneous formation in the dark, and visible light-induced cleavage, of a Ru-S bond in water: a thermodynamic and kinetic study. Inorg Chem 2013; 52:9456-69. [PMID: 23909908 DOI: 10.1021/ic401105v] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
In this work the thermal and photochemical reactivity of a series of ruthenium complexes [Ru(terpy)(N-N)(L)](X)2 (terpy = 2,2';6',2″-terpyridine, L = 2-(methylthio)ethanol (Hmte) or water, and X is Cl(-) or PF6(-)) with four different bidentate chelates N-N = bpy (2,2'-bipyridine), biq (2,2'-biquinoline), dcbpy (6,6'-dichloro-2,2'-bipyridine), or dmbpy (6,6'-dimethyl-2,2'-bipyridine), is described. For each chelate N-N the thermodynamic constant of the dark equilibrium between the aqua- and Hmte- complexes, the Hmte photosubstitution quantum yield, and the rate constants of the thermal interconversion between the aqua and Hmte complexes were measured at room temperature. By changing the steric hindrance and electronic properties of the spectator N-N ligand along the series bpy, biq, dcbpy, dmbpy the dark reactivity clearly shifts from a nonlabile equilibrium with N-N = bpy to a very labile thermal equilibrium with N-N = dmbpy. According to variable-temperature rate constant measurements in the dark near pH = 7 the activation enthalpies for the thermal substitution of H2O by Hmte are comparable for all ruthenium complexes, whereas the activation entropies are negative for bpy and biq, and positive for dcbpy and dmbpy complexes. These data are indicative of a change in the substitution mechanism, being interchange associative with nonhindered or poorly hindered chelates (bpy, biq), and interchange dissociative for more bulky ligands (dcbpy, dmbpy). For the most labile dmbpy system, the thermal equilibrium is too fast to allow significant modification of the composition of the mixture using light, and for the nonhindered bpy complex the photosubstitution of Hmte by H2O is possible but thermal binding of Hmte to the aqua complex does not occur at room temperature. By contrast, with N-N = biq or dcbpy the thermodynamic and kinetic parameters describing the formation and breakage of the Ru-S bond lie in a range where the bond forms spontaneously in the dark, but is efficiently cleaved under light irradiation. Thus, the ratio between the aqua and Hmte complex in solution can be efficiently controlled at room temperature using visible light irradiation.
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Affiliation(s)
- Azadeh Bahreman
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, Leiden, 2300 RA, The Netherlands
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28
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Moustafa ME, McCready MS, Puddephatt RJ. Photoswitchable Organoplatinum(IV) Complexes. Organometallics 2013. [DOI: 10.1021/om4000314] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mohamed E. Moustafa
- Department of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7
| | - Matthew S. McCready
- Department of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7
| | - Richard J. Puddephatt
- Department of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7
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29
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Synthesis, structure, photochromic and fluorescent imaging properties of a 3D cadmium(II) complex [Cd2(AT)2(H2O)4]·H2O (AT=5,5′-azotetrazolate). INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2012.11.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Yang M, OuYang ZJ, Chen WB, Zhou RF, Li N, Dong W. Structures of six photochromic 3d complexes containing 3,3′-azobis-1,2,4-triazole ligand. CrystEngComm 2013. [DOI: 10.1039/c3ce40736e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Kaiser M, Leitner SP, Hirtenlehner C, List M, Gerisch A, Monkowius U. Azobenzene-functionalized N-heterocyclic carbenes as photochromic ligands in silver(i) and gold(i) complexes. Dalton Trans 2013; 42:14749-56. [DOI: 10.1039/c3dt51565f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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32
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Moustafa ME, McCready MS, Puddephatt RJ. Switching by Photochemical trans–cis Isomerization of Azobenzene Substituents in Organoplatinum Complexes. Organometallics 2012. [DOI: 10.1021/om3005405] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Mohamed E. Moustafa
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7
| | - Matthew S. McCready
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7
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33
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Affiliation(s)
- D. W. Allen
- Biomedical Research Centre Sheffield Hallam University Sheffield, S1 1WB UK
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34
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Lin JM, Qiu YX, Chen WB, Yang M, Zhou AJ, Dong W, Tian CE. Unusual π−–π− stacking interactions between 5,5′-azotetrazolate(AT) anions in six AT based 3d metal photochromic complexes. CrystEngComm 2012. [DOI: 10.1039/c2ce06606h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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35
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36
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Bricout H, Banaszak E, Len C, Hapiot F, Monflier E. Amphiphilic photo-isomerisable phosphanes for aqueous organometallic catalysis. Chem Commun (Camb) 2010; 46:7813-5. [PMID: 20852794 DOI: 10.1039/c0cc02458a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Water-soluble phosphanes were tagged with a light-responding diazo group. Upon UV exposure, the diazo-isomerisation led to phosphane morphology change, resulting in an increase in the reaction rate of an aqueous palladium-catalysed cleavage reaction.
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Affiliation(s)
- Hervé Bricout
- Université de Lille Nord de France, CNRS UMR 8181, UArtois UCCS, Faculté des Sciences Jean Perrin, rue Jean Souvraz, SP 18, F-62307 Lens Cedex, France
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