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Timounay Y, Pannwitz A, Klein DM, Biance AL, Hoefnagel ME, Sen I, Cagna A, Le Merrer M, Bonnet S. Interfacial Characterization of Ruthenium-Based Amphiphilic Photosensitizers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:9697-9707. [PMID: 35904352 PMCID: PMC9367009 DOI: 10.1021/acs.langmuir.2c01391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/16/2022] [Indexed: 05/30/2023]
Abstract
Nonreactive surfactant molecules have long been used and characterized for a wide range of applications in industries, life science, and everyday life. Recently, new types of functional amphiphilic molecules have emerged that bear another function, for example, a light-absorbing action, or catalytic properties. However, the surfactant properties of these molecules remain to date essentially unknown. In this context, we investigated here the interfacial activity of photocatalytic surfactants based on a ruthenium(II) tris-bipyridine core, functionalized with two alkyl tails. We realized a systematic characterization of the surfactant properties of these molecules at a water-air interface and studied the effect of the alkyl chain length and of the counterions (hexafluorophosphate or chloride) on these properties. Our data demonstrate that ruthenium surfactants with chloride counteranions form a denser layer at the interface, but their surfactant properties can dramatically deteriorate when the chain length of the alkyl tail increases, leading to simple hydrophobic molecules with poor surfactant properties for the longest chains (C17). These findings pave the way for a better use and understanding of photocatalytic soft interfaces.
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Affiliation(s)
- Yousra Timounay
- Teclis
Scientific, 22 Ch. Des
Prés Secs, 69380 Civrieux d’Azergues, France
| | - Andrea Pannwitz
- Leiden
University, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands
- Universität
Ulm, Institut für Anorganische Chemie I, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - David M. Klein
- Leiden
University, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Anne-Laure Biance
- Université
de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
| | - Marlene E. Hoefnagel
- Leiden
University, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Indraneel Sen
- Wasabi
Innovations Ltd., Sofia
Tech Park Incubator, 111B, Tsarigratsko Shose, Sofia 1784, Bulgaria
| | - Alain Cagna
- Wasabi
Innovations Ltd., Sofia
Tech Park Incubator, 111B, Tsarigratsko Shose, Sofia 1784, Bulgaria
| | - Marie Le Merrer
- Université
de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
| | - Sylvestre Bonnet
- Leiden
University, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands
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2
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Nau REP, Bösking J, Pannwitz A. Compartmentalization Accelerates Photosensitized NADH to NAD+ Conversion. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Roland E. P. Nau
- Ulm University: Universitat Ulm Institut fuer Anorganische Chemie I GERMANY
| | - Julian Bösking
- Ulm University: Universitat Ulm Institut fuer Anorganische Chemie I GERMANY
| | - Andrea Pannwitz
- Ulm University: Universitat Ulm Institut fuer Anorganische Chemie I Albert-Einstein-Allee 11 89081 Ulm GERMANY
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3
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Strudwick BH, Zhang J, Hilbers MF, Buma WJ, Woutersen S, Liu SH, Hartl F. Excited-State Electronic Asymmetry Prevents Photoswitching in Terthiophene Compounds. Inorg Chem 2018; 57:9039-9047. [PMID: 30027738 DOI: 10.1021/acs.inorgchem.8b01005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The diarylethene moiety is one of the most extensively used switches in the field of molecular electronics. Here we report on spectroscopic and quantum chemical studies of two diarylethene-based compounds with a non- C3-symmetric triethynyl terthiophene core symmetrically substituted with RuCp*(dppe) or trimethylsilyl termini. The ethynyl linkers are strong IR markers that we use in time-resolved vibrational spectroscopic studies to get insight into the character and dynamics of the electronically excited states of these compounds on the picosecond to nanosecond time scale. In combination with electronic transient absorption studies and DFT calculations, our studies show that the conjugation of the non- C3-symmetric triethynyl terthiophene system in the excited state strongly affects one of the thiophene rings involved in the ring closure. As a result, cyclization of the otherwise photochromic 3,3″-dimethyl-2,2':3',2″-terthiophene core is inhibited. Instead, the photoexcited compounds undergo intersystem crossing to a long-lived triplet excited state from which they convert back to the ground state.
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Affiliation(s)
- Benjamin H Strudwick
- Molecular Photonics Group, Van 't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH Amsterdam , The Netherlands
| | - Jing Zhang
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
| | - Michiel F Hilbers
- Molecular Photonics Group, Van 't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH Amsterdam , The Netherlands
| | - Wybren Jan Buma
- Molecular Photonics Group, Van 't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH Amsterdam , The Netherlands
| | - Sander Woutersen
- Molecular Photonics Group, Van 't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH Amsterdam , The Netherlands
| | - Sheng Hua Liu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
| | - František Hartl
- Department of Chemistry , University of Reading , Whiteknights, Reading RG6 6AD , United Kingdom
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4
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Limburg B, Bouwman E, Bonnet S. Effect of Liposomes on the Kinetics and Mechanism of the Photocatalytic Reduction of Methyl Viologen. J Phys Chem B 2016; 120:6969-75. [DOI: 10.1021/acs.jpcb.6b03947] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- B. Limburg
- Leiden
Institute of Chemistry,
Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - E. Bouwman
- Leiden
Institute of Chemistry,
Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - S. Bonnet
- Leiden
Institute of Chemistry,
Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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