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Abodja O, Touati N, Morel M, Rudiuk S, Baigl D. ATP/azobenzene-guanidinium self-assembly into fluorescent and multi-stimuli-responsive supramolecular aggregates. Commun Chem 2024; 7:142. [PMID: 38918507 PMCID: PMC11199595 DOI: 10.1038/s42004-024-01226-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 06/17/2024] [Indexed: 06/27/2024] Open
Abstract
Building stimuli-responsive supramolecular systems is a way for chemists to achieve spatio-temporal control over complex systems as well as a promising strategy for applications ranging from sensing to drug-delivery. For its large spectrum of biological and biomedical implications, adenosine 5'-triphosphate (ATP) is a particularly interesting target for such a purpose but photoresponsive ATP-based systems have mainly been relying on covalent modification of ATP. Here, we show that simply mixing ATP with AzoDiGua, an azobenzene-guanidium compound with photodependent nucleotide binding affinity, results in the spontaneous self-assembly of the two non-fluorescent compounds into photoreversible, micrometer-sized and fluorescent aggregates. Obtained in water at room temperature and physiological pH, these supramolecular structures are dynamic and respond to several chemical, physical and biological stimuli. The presence of azobenzene allows a fast and photoreversible control of their assembly. ATP chelating properties to metal dications enable ion-triggered disassembly and fluorescence control with valence-selectivity. Finally, the supramolecular aggregates are disassembled by alkaline phosphatase in a few minutes at room temperature, resulting in enzymatic control of fluorescence. These results highlight the interest of using a photoswitchable nucleotide binding partner as a self-assembly brick to build highly responsive supramolecular entities involving biological targets without the need to covalently modify them.
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Affiliation(s)
- Olivier Abodja
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Nadia Touati
- Chimie ParisTech, Université PSL, CNRS, Institut de Recherche de Chimie-Paris, PCMTH, 75005, Paris, France
| | - Mathieu Morel
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Sergii Rudiuk
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Damien Baigl
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France.
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2
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Tverdokhleb N, Loebner S, Yadav B, Santer S, Saphiannikova M. Viscoplastic Modeling of Surface Relief Grating Growth on Isotropic and Preoriented Azopolymer Films. Polymers (Basel) 2023; 15:polym15020463. [PMID: 36679344 PMCID: PMC9865333 DOI: 10.3390/polym15020463] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 01/19/2023] Open
Abstract
We report on solving of two intriguing issues concerning the inscription of surface relief gratings within azopolymer thin films under irradiation with SS, PP and RL interference patterns. For this, we utilize the orientation approach and viscoplastic modeling in combination with experimental results, where the change in surface topography is acquired in situ during irradiation with modulated light. First, the initial orientation state of polymer backbones is proved to be responsible for the contradictory experimental reports on the efficiency of the SS interference pattern. Different orientation states can influence not only the phase of SS grating but also its height, which is experimentally confirmed by using special pretreatments. Second, the faster growth of gratings inscribed by the RL interference pattern is shown to be promoted by a weak photosoftening effect. Overall, the modeled results are in good agreement with the order of relative growth efficiency: RL-PP-SS.
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Affiliation(s)
- Nina Tverdokhleb
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden, 01069 Dresden, Germany
| | - Sarah Loebner
- Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany
| | - Bharti Yadav
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden, 01069 Dresden, Germany
| | - Svetlana Santer
- Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany
- Correspondence: (S.S.); (M.S.)
| | - Marina Saphiannikova
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden, 01069 Dresden, Germany
- Correspondence: (S.S.); (M.S.)
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3
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Arndt NB, Schlüter F, Böckmann M, Adolphs T, Arlinghaus HF, Doltsinis NL, Ravoo BJ. Self-Assembled Monolayers of Arylazopyrazoles on Glass and Silicon Oxide: Photoisomerization and Photoresponsive Wettability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:735-742. [PMID: 34989243 DOI: 10.1021/acs.langmuir.1c02651] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Surface coatings that respond to external influences and change their physical properties upon application of external stimuli are of great interest, with light being a particularly desirable choice. Photoswitches such as azobenzenes have been employed in a range of photoresponsive coatings. One striking change in physical property of many photoresponsive coatings is their responsive wettability upon illumination. In this work, we present photoswitchable self-assembled monolayers based on arylazopyrazoles (AAPs). In solution, AAPs offer significant improvements in terms of the photostationary state, thermal stability, and fatigue resistance. The AAP photoswitch is coupled to triethoxysilanes for an easy, one-step functionalization of glass and silicon oxide surfaces. We show the synthesis of AAP-based silanes and the successful surface functionalization, and we confirm the excellent photoswitchability of the AAPs in a self-assembled monolayer upon alternating irradiation with UV (365 nm) and green (520 nm) light. The self-assembled monolayers are investigated by UV/vis spectroscopy, X-ray photoelectron spectroscopy (XPS), time-of-flight secondary ion mass spectrometry (ToF-SIMS), and contact angle goniometry. We furthermore investigate the effect of substitution of the AAPs on the photoresponsive wetting behavior and compare this with density functional theory (DFT) calculations of the dipole moments of the AAPs.
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Affiliation(s)
- Niklas B Arndt
- Center for Soft Nanoscience and Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Busso-Peus Straße 10, 48149 Münster, Germany
| | - Friederike Schlüter
- Center for Soft Nanoscience and Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Busso-Peus Straße 10, 48149 Münster, Germany
| | - Marcus Böckmann
- Center for Soft Nanoscience and Institute of Solid State Theory, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Thorsten Adolphs
- Center for Soft Nanoscience and Physics Institute, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Heinrich F Arlinghaus
- Center for Soft Nanoscience and Physics Institute, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Nikos L Doltsinis
- Center for Soft Nanoscience and Institute of Solid State Theory, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Bart Jan Ravoo
- Center for Soft Nanoscience and Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Busso-Peus Straße 10, 48149 Münster, Germany
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4
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Arya P, Jelken J, Lomadze N, Santer S, Bekir M. Kinetics of photo-isomerization of azobenzene containing surfactants. J Chem Phys 2020; 152:024904. [PMID: 31941331 DOI: 10.1063/1.5135913] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
We report on photoisomerization kinetics of azobenzene containing surfactants in aqueous solution. The surfactant molecule consists of a positively charged trimethylammonium bromide head group, a hydrophobic spacer connecting via 6 to 10 CH2 groups to the azobenzene unit, and the hydrophobic tail of 1 and 3CH2 groups. Under exposure to light, the azobenzene photoisomerizes from more stable trans- to metastable cis-state, which can be switched back either thermally in dark or by illumination with light of a longer wavelength. The surfactant isomerization is described by a kinetic model of a pseudo first order reaction approaching equilibrium, where the intensity controls the rate of isomerization until the equilibrated state. The rate constants of the trans-cis and cis-trans photoisomerization are calculated as a function of several parameters such as wavelength and intensity of light, the surfactant concentration, and the length of the hydrophobic tail. The thermal relaxation rate from cis- to trans-state is studied as well. The surfactant isomerization shows a different kinetic below and above the critical micellar concentration of the trans isomer due to steric hindrance within the densely packed micelle but does not depend on the spacer length.
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Affiliation(s)
- Pooja Arya
- Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany
| | - Joachim Jelken
- Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany
| | - Nino Lomadze
- Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany
| | - Svetlana Santer
- Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany
| | - Marek Bekir
- Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany
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5
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Liu H, Liu Y, Shang Y, Liu H. Molecular dynamics simulation for drug delivery in azobenzene-containing membranes. MOLECULAR SIMULATION 2019. [DOI: 10.1080/08927022.2019.1699655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Hengjiang Liu
- State Key Laboratory of Chemical Engineering and School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, People’s Republic of China
| | - Yu Liu
- State Key Laboratory of Chemical Engineering and School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, People’s Republic of China
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, People’s Republic of China
| | - Yazhuo Shang
- State Key Laboratory of Chemical Engineering and School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, People’s Republic of China
| | - Honglai Liu
- State Key Laboratory of Chemical Engineering and School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, People’s Republic of China
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6
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Murawska GM, Poloni C, Simeth NA, Szymanski W, Feringa BL. Comparative Study of Photoswitchable Zinc-Finger Domain and AT-Hook Motif for Light-Controlled Peptide-DNA Binding. Chemistry 2019; 25:4965-4973. [PMID: 30735272 DOI: 10.1002/chem.201900090] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Indexed: 12/20/2022]
Abstract
DNA-peptide interactions are involved in key life processes, including DNA recognition, replication, transcription, repair, organization, and modification. Development of tools that can influence DNA-peptide binding non-invasively with high spatiotemporal precision could aid in determining its role in cells and tissues. Here, the design, synthesis, and study of photocontrolled tools for sequence-specific small peptide-DNA major and minor groove interactions are reported, shedding light on DNA binding by transcriptionally active peptides. In particular, photoswitchable moieties were implemented in the peptide backbone or turn region. In each case, DNA binding was affected by photochemical isomerization, as determined in fluorescent displacement assays on model DNA strands, which provides promising tools for DNA modulation.
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Affiliation(s)
- Gosia M Murawska
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Claudia Poloni
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Nadja A Simeth
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Wiktor Szymanski
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands.,Department of Radiology, University of Groningen, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Ben L Feringa
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
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7
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Hürtgen D, Murray SM, Mascarenhas J, Sourjik V. DNA Segregation in Natural and Synthetic Minimal Systems. ACTA ACUST UNITED AC 2019; 3:e1800316. [DOI: 10.1002/adbi.201800316] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/18/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Daniel Hürtgen
- MPI for Terrestrial Microbiology and LOEWE Center for Synthetic Microbiology (Synmikro) Marburg 35043 Germany
| | - Seán M. Murray
- MPI for Terrestrial Microbiology and LOEWE Center for Synthetic Microbiology (Synmikro) Marburg 35043 Germany
| | - Judita Mascarenhas
- MPI for Terrestrial Microbiology and LOEWE Center for Synthetic Microbiology (Synmikro) Marburg 35043 Germany
| | - Victor Sourjik
- MPI for Terrestrial Microbiology and LOEWE Center for Synthetic Microbiology (Synmikro) Marburg 35043 Germany
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8
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Hill SA, Gerke C, Hartmann L. Recent Developments in Solid-Phase Strategies towards Synthetic, Sequence-Defined Macromolecules. Chem Asian J 2018; 13:3611-3622. [PMID: 30216690 DOI: 10.1002/asia.201801171] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Indexed: 01/09/2023]
Abstract
Sequence-control in synthetic polymers is an important contemporary research area because it provides the opportunity to create completely novel materials for structure-function studies. This is especially relevant for biomimetic polymers, bioactive and information security materials. The level of control is strongly dependent and inherent upon the polymerization technique utilized. Today, the most established method yielding monodispersity and monomer sequence-definition is solid-phase synthesis. This Focus Review highlights recent advances in solid-phase strategies to access synthetic, sequence-defined macromolecules. Alternatives strategies towards sequence-defined macromolecules are also briefly summarized.
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Affiliation(s)
- Stephen A Hill
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
| | - Christoph Gerke
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
| | - Laura Hartmann
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
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9
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Drożdż W, Bessin Y, Gervais V, Cao XY, Lehn JM, Stefankiewicz AR, Ulrich S. Switching Multivalent DNA Complexation using Metal-Controlled Cationic Supramolecular Self-Assemblies. Chemistry 2018; 24:1518-1521. [DOI: 10.1002/chem.201705630] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Wojciech Drożdż
- Faculty of Chemistry; Adam Mickiewicz University; Umultowska 89b 61-614 Poznań Poland
- Centre for Advanced Technologies; Adam Mickiewicz University; Umultowska 89c 61-614 Poznań Poland
| | - Yannick Bessin
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université de Montpellier; Ecole Nationale Supérieure de Chimie de Montpellier; 8 rue de l'Ecole Normale 34296 Montpellier cedex 5 France
| | - Virginie Gervais
- CNRS; Institut de Pharmacologie et de Biologie Structurale (IPBS); Université de Toulouse, UPS; 205 route de Narbonne 31077 Toulouse France
| | - Xiao-Yu Cao
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), UMR 7006, CNRS; Université de Strasbourg; 8 allée Gaspard Monge 67000 Strasbourg France
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), UMR 7006, CNRS; Université de Strasbourg; 8 allée Gaspard Monge 67000 Strasbourg France
| | - Artur R. Stefankiewicz
- Faculty of Chemistry; Adam Mickiewicz University; Umultowska 89b 61-614 Poznań Poland
- Centre for Advanced Technologies; Adam Mickiewicz University; Umultowska 89c 61-614 Poznań Poland
| | - Sébastien Ulrich
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université de Montpellier; Ecole Nationale Supérieure de Chimie de Montpellier; 8 rue de l'Ecole Normale 34296 Montpellier cedex 5 France
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10
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Montagna M, Guskova O. Photosensitive Cationic Azobenzene Surfactants: Thermodynamics of Hydration and the Complex Formation with Poly(methacrylic acid). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:311-321. [PMID: 29228776 DOI: 10.1021/acs.langmuir.7b03638] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this computational work, we investigate the photosensitive cationic surfactants with the trimethylammonium or polyamine hydrophilic head and the azobenzene-containing hydrophobic tail. The azobenzene-based molecules are known to undergo a reversible trans-cis-trans isomerization reaction when subjected to UV-visible light irradiation. Combining the density functional theory and the all-atom molecular dynamics simulations, the structural and the hydration properties of the trans- and the cis-isomers and their interaction with the oppositely charged poly(methacrylic acid) in aqueous solution are investigated. We establish and quantify the correlations of the molecular structure and the isomerization state of the surfactants and their hydrophilicity/hydrophobicity and the self-assembling altered by light. For this reason, we compare the hydration free energies of the trans- and the cis-isomers. Moreover, the investigations of the interaction strength between the azobenzene molecules and the polyanion provide additional elucidations of the recent experimental and theoretical studies on the light triggered reversible deformation behavior of the microgels and the polymer brushes loaded with azobenzene surfactants.
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Affiliation(s)
- Maria Montagna
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden , Hohe Str. 6, D-01069 Dresden, Germany
| | - Olga Guskova
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden , Hohe Str. 6, D-01069 Dresden, Germany
- Dresden Center for Computational Materials Science (DCMS), Technische Universität Dresden , D-01062 Dresden, Germany
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11
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Photomodulation of DNA-Templated Supramolecular Assemblies. Chemistry 2017; 24:706-714. [DOI: 10.1002/chem.201704538] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Indexed: 12/22/2022]
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12
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Lawatscheck C, Pickhardt M, Grafl A, Linkert K, Polster F, Mandelkow E, Börner HG. Gaining Insights into Specific Drug Formulation Additives for Solubilizing a Potential Anti-Alzheimer Disease Drug B4A1. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201700109] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 04/07/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Carmen Lawatscheck
- Department of Chemistry; Laboratory for Organic Synthesis of Functional Systems; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 12489 Berlin Germany
| | - Marcus Pickhardt
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE); Sigmund-Freud-Str. 27, 53127 Bonn, Forschungszentrum CAESAR, Ludwig-Erhard-Allee 2 53175 Bonn Germany
| | - Anna Grafl
- Department of Chemistry; Laboratory for Organic Synthesis of Functional Systems; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 12489 Berlin Germany
| | - Katharina Linkert
- Department of Chemistry; Laboratory for Organic Synthesis of Functional Systems; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 12489 Berlin Germany
| | - Frank Polster
- Department of Chemistry; Laboratory for Organic Synthesis of Functional Systems; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 12489 Berlin Germany
| | - Eckhard Mandelkow
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE); Sigmund-Freud-Str. 27, 53127 Bonn, Forschungszentrum CAESAR, Ludwig-Erhard-Allee 2 53175 Bonn Germany
| | - Hans G. Börner
- Department of Chemistry; Laboratory for Organic Synthesis of Functional Systems; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 12489 Berlin Germany
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13
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Malyar IV, Titov E, Lomadze N, Saalfrank P, Santer S. Photoswitching of azobenzene-containing self-assembled monolayers as a tool for control over silicon surface electronic properties. J Chem Phys 2017; 146:104703. [DOI: 10.1063/1.4978225] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Ivan V. Malyar
- Department of Nano- and Biomedical Technologies, Saratov State University, Astrakhanskaya 83, 410012 Saratov, Russia
| | - Evgenii Titov
- Experimental Physics, Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
- Theoretical Chemistry, Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - Nino Lomadze
- Experimental Physics, Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - Peter Saalfrank
- Theoretical Chemistry, Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - Svetlana Santer
- Experimental Physics, Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
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14
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Feldmann D, Maduar SR, Santer M, Lomadze N, Vinogradova OI, Santer S. Manipulation of small particles at solid liquid interface: light driven diffusioosmosis. Sci Rep 2016; 6:36443. [PMID: 27808170 PMCID: PMC5093767 DOI: 10.1038/srep36443] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 10/14/2016] [Indexed: 12/11/2022] Open
Abstract
The strong adhesion of sub-micron sized particles to surfaces is a nuisance, both for removing contaminating colloids from surfaces and for conscious manipulation of particles to create and test novel micro/nano-scale assemblies. The obvious idea of using detergents to ease these processes suffers from a lack of control: the action of any conventional surface-modifying agent is immediate and global. With photosensitive azobenzene containing surfactants we overcome these limitations. Such photo-soaps contain optical switches (azobenzene molecules), which upon illumination with light of appropriate wavelength undergo reversible trans-cis photo-isomerization resulting in a subsequent change of the physico-chemical molecular properties. In this work we show that when a spatial gradient in the composition of trans- and cis- isomers is created near a solid-liquid interface, a substantial hydrodynamic flow can be initiated, the spatial extent of which can be set, e.g., by the shape of a laser spot. We propose the concept of light induced diffusioosmosis driving the flow, which can remove, gather or pattern a particle assembly at a solid-liquid interface. In other words, in addition to providing a soap we implement selectivity: particles are mobilized and moved at the time of illumination, and only across the illuminated area.
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Affiliation(s)
- David Feldmann
- Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany
| | - Salim R Maduar
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31 Leninsky Prospect, 119071 Moscow, Russia.,Department of Physics, M. V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Mark Santer
- Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Nino Lomadze
- Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany
| | - Olga I Vinogradova
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31 Leninsky Prospect, 119071 Moscow, Russia.,Department of Physics, M. V. Lomonosov Moscow State University, 119991 Moscow, Russia.,DWI-Leibniz Institute for Interactive Materials, RWTH Aachen, Forckenbeckstraße 50, 52056 Aachen, Germany
| | - Svetlana Santer
- Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany
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