1
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Arndt NB, Adolphs T, Arlinghaus HF, Heidrich B, Ravoo BJ. Arylazopyrazole-Modified Thiolactone Acrylate Copolymer Brushes for Tuneable and Photoresponsive Wettability of Glass Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:5342-5351. [PMID: 37011284 DOI: 10.1021/acs.langmuir.2c03400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Photoswitches have long been employed in coatings for surfaces and substrates to harness light as a versatile stimulus to induce responsive behavior. We previously demonstrated the viability of arylazopyrazole (AAP) as a photoswitch in self-assembled monolayers (SAMs) on silicon and glass surfaces for photoresponsive wetting applications. We now aim to transfer the excellent photophysical properties of AAPs to polymer brush coatings. Compared to SAMs, polymer brushes offer enhanced stability and an increase of the thickness and density of the functional organic layer. In this work, we present thiolactone acrylate copolymer brushes which can be post-modified with AAP amines as well as hydrophobic acrylates, making use of the unique chemistry of the thiolactones. This strategy enables photoresponsive wetting with a tuneable range of contact angle change on glass substrates. We show the successful synthesis of thiolactone hydroxyethyl acrylate copolymer brushes by means of surface-initiated atom-transfer radical polymerization with the option to either prepare homogeneous brushes or to prepare micrometer-sized brush patterns by microcontact printing. The polymer brushes were analyzed by atomic force microscopy, time-of-flight secondary ion spectrometry, and X-ray photoelectron spectroscopy. Photoresponsive behavior imparted to the brushes by means of post-modification with AAP is monitored by UV/vis spectroscopy, and wetting behavior of homogeneous brushes is measured by static and dynamic contact angle measurements. The brushes show an average change in static contact angle of around 13° between E and Z isomer of the AAP photoswitch for at least five cycles, while the range of contact angle change can be fine-tuned between 53.5°/66.5° (E/Z) and 81.5°/94.8° (E/Z) by post-modification with hydrophobic acrylates.
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Affiliation(s)
- Niklas B Arndt
- Center for Soft Nanoscience and Organic Chemistry Institute, University of Münster, Busso-Peus-Straße 10, 48149 Münster, Germany
| | - Thorsten Adolphs
- Center for Soft Nanoscience and Physics Institute, University of Münster, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Heinrich F Arlinghaus
- Center for Soft Nanoscience and Physics Institute, University of Münster, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Bastian Heidrich
- MEET Battery Research Center, University of Münster, Corrensstraße 46, 48149 Münster, Germany
- Institute of Physical Chemistry, University of Münster, Corrensstraße 29, 48149 Münster, Germany
| | - Bart Jan Ravoo
- Center for Soft Nanoscience and Organic Chemistry Institute, University of Münster, Busso-Peus-Straße 10, 48149 Münster, Germany
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2
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Topp L, Stieneker M, Gurevich SV, Heuer A. Wetting dynamics under periodic switching on different scales: characterization and mechanisms. SOFT MATTER 2022; 18:6974-6986. [PMID: 36069383 DOI: 10.1039/d2sm01023b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The development of substrates with a switchable wettability is proceeding and the limit of switching frequencies and contact angle differences between substrate states has developed in the past years. In this paper we investigate the behavior of a droplet on a homogeneous substrate, which is switched between two wettabilities for a large range of switching frequencies. Here, we are particularly interested in the dependence of the wetting behavior on the switching frequency. We show that results obtained on the particle level via molecular dynamics simulations and on the continuum level via the thin-film model are consistent. Predictions of simple models as the molecular theory of wetting (MKT) and analytical calculations based on the MKT also show good agreement and offer deeper insights into the underlying mechanisms.
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Affiliation(s)
- Leon Topp
- University of Münster, Institute for Physical Chemistry, Correnstr. 28/30, 48149 Münster, Germany.
| | - Moritz Stieneker
- University of Münster, Institute for Theoretical Physics, Wilhelm-Klemm-Str. 9, 48149 Münster, Germany.
- University of Münster, Center of Nonlinear Science (CeNoS), Corrensstr. 2, 48149 Münster, Germany
| | - Svetlana V Gurevich
- University of Münster, Institute for Theoretical Physics, Wilhelm-Klemm-Str. 9, 48149 Münster, Germany.
- University of Münster, Center of Nonlinear Science (CeNoS), Corrensstr. 2, 48149 Münster, Germany
- University of Münster, Center for Multiscale Theory and Computation (CMTC), Corrensstr. 40, 48149 Münster, Germany
| | - Andreas Heuer
- University of Münster, Institute for Physical Chemistry, Correnstr. 28/30, 48149 Münster, Germany.
- University of Münster, Center of Nonlinear Science (CeNoS), Corrensstr. 2, 48149 Münster, Germany
- University of Münster, Center for Multiscale Theory and Computation (CMTC), Corrensstr. 40, 48149 Münster, Germany
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3
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Keyvan Rad J, Balzade Z, Mahdavian AR. Spiropyran-based advanced photoswitchable materials: A fascinating pathway to the future stimuli-responsive devices. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C: PHOTOCHEMISTRY REVIEWS 2022. [DOI: 10.1016/j.jphotochemrev.2022.100487] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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4
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Hagan JT, Gonzalez A, Shi Y, Han GGD, Dwyer JR. Photoswitchable Binary Nanopore Conductance and Selective Electronic Detection of Single Biomolecules under Wavelength and Voltage Polarity Control. ACS NANO 2022; 16:5537-5544. [PMID: 35286058 DOI: 10.1021/acsnano.1c10039] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We fabricated photoregulated thin-film nanopores by covalently linking azobenzene photoswitches to silicon nitride pores with ∼10 nm diameters. The photoresponsive coatings could be repeatedly optically switched with deterministic ∼6 nm changes to the effective nanopore diameter and of ∼3× to the nanopore ionic conductance. The sensitivity to anionic DNA and a neutral complex carbohydrate biopolymer (maltodextrin) could be photoswitched "on" and "off" with an analyte selectivity set by applied voltage polarity. Photocontrol of nanopore state and mass transport characteristics is important for their use as ionic circuit elements (e.g., resistors and binary bits) and as chemically tuned filters. It expands single-molecule sensing capabilities in personalized medicine, genomics, glycomics, and, augmented by voltage polarity selectivity, especially in multiplexed biopolymer information storage schemes. We demonstrate repeatedly photocontrolled stable nanopore size, polarity, conductance, and sensing selectivity, by illumination wavelength and voltage polarity, with broad utility including single-molecule sensing of biologically and technologically important polymers.
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Affiliation(s)
- James T Hagan
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Alejandra Gonzalez
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02453, United States
| | - Yuran Shi
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02453, United States
| | - Grace G D Han
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02453, United States
| | - Jason R Dwyer
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
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5
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Pardehkhorram R, Andrieu-Brunsen A. Pushing the limits of nanopore transport performance by polymer functionalization. Chem Commun (Camb) 2022; 58:5188-5204. [PMID: 35394003 DOI: 10.1039/d2cc01164f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Inspired by the design and performance of biological pores, polymer functionalization of nanopores has emerged as an evolving field to advance transport performance within the last few years. This feature article outlines developments in nanopore functionalization and the resulting transport performance including gating based on electrostatic interaction, wettability and ligand binding, gradual transport controlled by polymerization as well as functionalization-based asymmetric nanopore and nanoporous material design going towards the transport direction. Pushing the limits of nanopore transport performance and thus reducing the performance gap between biological and technological pores is strongly related to advances in polymerization chemistry and their translation into nanopore functionalization. Thereby, the effect of the spatial confinement has to be considered for polymer functionalization as well as for transport regulation, and mechanistic understanding is strongly increased by combining experiment and theory. A full mechanistic understanding together with highly precise nanopore structure design and polymer functionalization is not only expected to improve existing application of nanoporous materials but also opens the door to new technologies. The latter might include out of equilibrium devices, ionic circuits, or machine learning based sensors.
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Affiliation(s)
- Raheleh Pardehkhorram
- Macromolecular Chemistry, Smart Membranes, Technical University of Darmstadt, 64287 Darmstadt, Germany.
| | - Annette Andrieu-Brunsen
- Macromolecular Chemistry, Smart Membranes, Technical University of Darmstadt, 64287 Darmstadt, Germany.
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6
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Honnigfort C, Topp L, García Rey N, Heuer A, Braunschweig B. Dynamic Wetting of Photoresponsive Arylazopyrazole Monolayers is Controlled by the Molecular Kinetics of the Monolayer. J Am Chem Soc 2022; 144:4026-4038. [PMID: 35212522 DOI: 10.1021/jacs.1c12832] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Smart surfaces that can change their wettability on demand are interesting for applications such as self-cleaning surfaces or lab-on-a-chip devices. We have synthesized arylazopyrazole (AAP) phosphonic acids as a new class of photoswitchable molecules for functionalization of aluminum oxide surfaces. AAP monolayers were deposited on α-Al2O3(0001) and showed reversible E/Z photoswitching that can trigger contact angle changes of up to ∼10°. We monitored these changes on the macroscopic level by recording the contact angle while the monolayer was switched in situ. On the molecular level, time-dependent vibrational sum-frequency generation (SFG) spectroscopy provided information on the kinetic changes within the AAP monolayer and the characteristic times for E/Z switching. In addition, vibrational SFG at different relative humidity indicates that the thermal stability of the Z configuration is largely influenced by the presence of water which can stabilize the Z state and hinder E → Z switching of the AAP monolayer when it is wetted with H2O. Having established the switching times on the molecular scale, we additionally measured the dynamic contact angle and show that the time scales of the substrate and droplet dynamics can be extracted individually. For that, we report on a relaxation model that is solved analytically and is verified via a comparison with simulations of a Lennard-Jones system and with experimental data. The slower E to Z switching in the presence of the droplet as compared to the vapor phase is rationalized in terms of specific interactions of water with the exposed AAP moieties.
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Affiliation(s)
- Christian Honnigfort
- Institute of Physical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 28/30, 48149 Münster, Germany.,Center of Soft Nanoscience, Westfälische Wilhelms-Universität Münster, Busso-Peus-Straße 10, 48149 Münster, Germany
| | - Leon Topp
- Institute of Physical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 28/30, 48149 Münster, Germany
| | - Natalia García Rey
- Institute of Physical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 28/30, 48149 Münster, Germany
| | - Andreas Heuer
- Institute of Physical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 28/30, 48149 Münster, Germany
| | - Björn Braunschweig
- Institute of Physical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 28/30, 48149 Münster, Germany.,Center of Soft Nanoscience, Westfälische Wilhelms-Universität Münster, Busso-Peus-Straße 10, 48149 Münster, Germany
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7
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Ye Q, Wang R, Yan S, Chen B, Zhu X. Bioinspired photo-responsive membrane enhanced with "light-cleaning" feature for controlled molecule release. J Mater Chem B 2022; 10:2617-2627. [PMID: 35014659 DOI: 10.1039/d1tb02329b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inspired by the stomatal feature of plant leaves, a photo-responsive membrane was developed to enhance the removal of irreversible membrane fouling and to control molecule release. Photo-responsive polymers were prepared by reacting the amine group of 4-amineazobenzene with about 3, 5 and 9 out of 12 carboxylic groups of PMAA which was grafted from P(VDF-CTFE) with a certain length. Subsequently, high-flux photo-responsive membranes (PRMs) were prepared from the heterogeneous polymers with different contents of photo-switchable azobenzene following a non-solvent-induced phase-inversion protocol. The pore size and surface hydrophilicity of PRMs could be reversibly increased by switching visible light to UV irradiation, which dramatically enhanced the backflushing efficiency on PRMs under UV irradiation. The "light-cleaning" process could recover more than 90% of the irreversible flux decline caused by typical organic foulant (BSA) and biological foulant (E. coli) on PRMs. The higher the content of azobenzene, the more obvious the pore size and hydrophilicity variation after light switching but the smaller the absolute pore size observed for PRMs. On the other hand, the light-switching gates of PRMs enabled the controlled release of molecules with different sizes. The novel PRM provided an efficient solution to mitigate irreversible membrane fouling and a light-triggered molecule release protocol, which would improve the membrane performance and further expand the application field of the membrane.
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Affiliation(s)
- Qisheng Ye
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China. .,Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Rui Wang
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China. .,Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Saitao Yan
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China. .,Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China. .,Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Xiaoying Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China. .,Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
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8
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Straub AJ, Scherag FD, Kim HI, Steiner MS, Brandstetter T, Rühe J. "CHicable" and "Clickable" Copolymers for Network Formation and Surface Modification. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6510-6520. [PMID: 34003660 DOI: 10.1021/acs.langmuir.1c00669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, we present the generation of novel, multifunctional polymer networks through a combination of C,H-insertion cross-linking (CHic) and click chemistry. To this, copolymers consisting of hydrophilic N,N-dimethylacrylamide as matrix component and repeat units containing azide moieties, as well as benzophenone or anthraquinone groups, are generated. The benzophenone or anthraquinone groups allow photo-cross-linking, surface attachment or covalent immobilization of adjacent (bio)molecules through CHic reactions. The azide moieties either can react with available alkynes through conventional click reactions or can be activated to form nitrenes, which can also undergo CHic reactions. By choosing appropriate reaction conditions, the same polymer can be used to follow very different reaction paths, opening up a plethora of choices for the generation of functional polymer networks. In the exemplary presented case ("CHic-Click"), irradiation of the copolymers with UV-A light (λirr = 365 nm) leads to cross-linking (network formation) and surface attachment simultaneously. The azide units remain intact during this cross-linking step, and alkyne-modified (bio)molecules can be bound through click reactions. Biofunctionalization of the polymer network with alkynylated streptavidin, followed by application of biotin-conjugated antibody and a model analyte, highlights the potential of these surface architectures as a toolbox which can be adapted for diverse bioanalytical applications.
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Affiliation(s)
- Alexander J Straub
- Laboratory for Chemistry and Physics of Interfaces, Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg, Germany
| | - Frank D Scherag
- Laboratory for Chemistry and Physics of Interfaces, Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg, Germany
| | - Hye In Kim
- Laboratory for Chemistry and Physics of Interfaces, Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg, Germany
| | - Mark-Steven Steiner
- Microcoat Biotechnologie GmbH, Am Neuland 3, 82347 Bernried am Starnberger See, Germany
| | - Thomas Brandstetter
- Laboratory for Chemistry and Physics of Interfaces, Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg, Germany
| | - Jürgen Rühe
- Laboratory for Chemistry and Physics of Interfaces, Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg, Germany
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9
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Yin K, Lu D, Sun B, Kalwarczyk T, Hołyst R, Hao J, Li H, Hao J. Photoluminescent, Ferromagnetic, and Hydrophobic Sponges for Oil-Water Separation. ACS OMEGA 2020; 5:15077-15082. [PMID: 32637780 PMCID: PMC7330909 DOI: 10.1021/acsomega.0c00899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 04/10/2020] [Indexed: 06/11/2023]
Abstract
To find a facile way to produce a hydrophobic sponge that can effectively absorb oils is urgent to resolve the environmental pollution and ecological disaster caused by oil spillage. Here, alkylated carbon dots (C dots) were prepared from pyrolysis of a mixture of dodecylamine and citric acid followed by purification through silica gel column chromatography. Polyurethane sponge was modified by alkylated C dots by a simple dip-coating method, which endows the photoluminescent and hydrophobic sponge with good absorption capacities for various oils and nonpolar organic solvents with high recyclability. The water contact angle of the modified sponge can reach 138.8°. Interestingly, the sponge enables visual absorption under UV irradiation in the dark, which has not been achieved by other carbon-based adsorbents. The sponge was further made ferromagnetic by introducing alkylated Fe3O4 nanoparticles into its structure, which allowed controllable oil-water separation.
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Affiliation(s)
- Keyang Yin
- State
Key Laboratory of Solid Lubrication, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Dandan Lu
- Key
Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, China
| | - Bangping Sun
- Key
Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, China
| | - Tomasz Kalwarczyk
- Department
III, Institute of Physical Chemistry, Polish
Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Robert Hołyst
- Department
III, Institute of Physical Chemistry, Polish
Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Junying Hao
- State
Key Laboratory of Solid Lubrication, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Hongguang Li
- Key
Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, China
| | - Jingcheng Hao
- Key
Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, China
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10
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Tang S, Xue D, Guo J, Ma L, Tian Y, Luo J. Macroscale Light-Controlled Lubrication Enabled by Introducing Diarylethene Molecules in a Nanoconfinement. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5820-5828. [PMID: 32366102 DOI: 10.1021/acs.langmuir.0c00523] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Reversible friction regulation is of long-standing great interest in the fields of both industry and scientific research, so some materials and theories have been developed aiming to solve this problem. Light-sensitive materials are promising because of the easy controllable switching of the properties and structures. Here, a reversible light-controlled macrolubrication was realized by regulating the performance of nanoscale light-sensitive molecules adsorbed on contact surfaces. In this work, symmetric diarylethene and asymmetric diarylethene had been designed and synthesized as functional materials. The friction forces were found to be obviously increased upon exposure to ultraviolet light and decayed to the initial value under visible light. In addition, the friction coefficient changed alternately with ultraviolet and visible illumination. According to the results of experiments and simulation of material properties, the behavior was suggested to be attributed to the difference in shear stiffness of the nanoscale diarylethene molecule adsorption layer triggered by two wavelength lights. This work not only provides a new lubrication regulation technology but also develops intelligent engineering materials.
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Affiliation(s)
- Shuangxi Tang
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Dandan Xue
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Jiaqi Guo
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Liran Ma
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Yu Tian
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Jianbin Luo
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
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11
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Kunfi A, Bernadett Vlocskó R, Keresztes Z, Mohai M, Bertóti I, Ábrahám Á, Kiss É, London G. Photoswitchable Macroscopic Solid Surfaces Based On Azobenzene-Functionalized Polydopamine/Gold Nanoparticle Composite Materials: Formation, Isomerization and Ligand Exchange. Chempluschem 2020; 85:797-805. [PMID: 31967410 DOI: 10.1002/cplu.201900674] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 01/07/2020] [Indexed: 12/21/2022]
Abstract
The facile preparation of dynamic interfaces is presented based on the combination of photoisomerizable azobenzenes and polydopamine (PDA)/Au nanoparticle composite materials. Azobenzenes with different spacer lengths (C3 , C6 ) and surface-binding groups (SH, NH2 ) were synthesized. The polymer layer on macroscopic quartz surface was prepared by the facile aerobic autopolymerisation of dopamine hydrochloride under basic conditions. The presence of redox-active catechol moieties meant that gold nanoparticles were formed on the polymer surface. The obtained UV-Vis spectroscopic results confirmed that following their successful assembly, the switching of azobenzenes on PDA/Au was not affected by the surface binding group and the spacer length of the azobenzene molecules under the measurement conditions. Furthermore, facilitated by the curved nature of the Au particles, the surface-bound azobenzene layer could be reconstructed by ligand-exchange processes, and the photochemical characterization of the mixed layer was performed.
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Affiliation(s)
- Attila Kunfi
- Institute of Organic Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., 1117, Budapest, Hungary.,Department of Organic Chemistry, University of Szeged, Dóm tér 8, 6720, Szeged, Hungary
| | - Rita Bernadett Vlocskó
- Institute of Organic Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., 1117, Budapest, Hungary
| | - Zsófia Keresztes
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., 1117, Budapest, Hungary
| | - Miklós Mohai
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., 1117, Budapest, Hungary
| | - Imre Bertóti
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., 1117, Budapest, Hungary
| | - Ágnes Ábrahám
- Institute of Organic Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., 1117, Budapest, Hungary.,Laboratory of Interfaces and Nanostructures, Eötvös Loránd University, Pázmány Péter stny. 1/A, 1117, Budapest, Hungary
| | - Éva Kiss
- Laboratory of Interfaces and Nanostructures, Eötvös Loránd University, Pázmány Péter stny. 1/A, 1117, Budapest, Hungary
| | - Gábor London
- Institute of Organic Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., 1117, Budapest, Hungary
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12
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Zong C, Hu M, Azhar U, Chen X, Zhang Y, Zhang S, Lu C. Smart Copolymer-Functionalized Flexible Surfaces with Photoswitchable Wettability: From Superhydrophobicity with "Rose Petal" Effect to Superhydrophilicity. ACS APPLIED MATERIALS & INTERFACES 2019; 11:25436-25444. [PMID: 31268647 DOI: 10.1021/acsami.9b07767] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Realizing smart surfaces with switchable wettability inspired by nature continues to be fascinating as well as challenging. Herein, we present a versatile dip-coating approach to fabricate smart polymer-functionalized flexible surfaces with photoswitchable superwettability. Decorated with novel acrylate copolymers bearing a trifluoromethyl side chain and fluorine-containing azobenzene derivative moieties, the modified cotton fabric possesses a rose petal-like superhydrophobicity with contact angles larger than 150° and high water adhesion. This smart surface exhibits rapid phototriggered wettability transformation between superhydrophobicity and superhydrophilicity via alternate irradiation with ultraviolet and visible light, respectively. Meanwhile, the as-prepared flexible smart surfaces have excellent chemical and physical stabilities, which could tolerate harsh environmental conditions and repetitive mechanical deformation (e.g., stretching, curling, folding, and twisting) as well as multiple washing. More importantly, based on the excellent photocontrollability, various erasable and rewritable patterns with distinct wetting properties upon selective photoirradiation can be obtained. This simple strategy and the developed smart surface may find more advanced potential applications in controllable liquid transport, patterning droplet microarrays, and microfluidic devices.
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Affiliation(s)
- Chuanyong Zong
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , P. R. China
| | - Mei Hu
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , P. R. China
| | - Umair Azhar
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , P. R. China
| | - Xu Chen
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , P. R. China
| | - Yabin Zhang
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , P. R. China
| | - Shuxiang Zhang
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , P. R. China
| | - Conghua Lu
- School of Materials Science and Engineering , Tianjin University , Tianjin 300072 , P. R. China
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13
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Progress toward reversible electrowetting on geometrically patterned superhydrophobic surfaces. Curr Opin Colloid Interface Sci 2018. [DOI: 10.1016/j.cocis.2018.01.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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14
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Su X, Li H, Lai X, Zhang L, Liao X, Wang J, Chen Z, He J, Zeng X. Dual-Functional Superhydrophobic Textiles with Asymmetric Roll-Down/Pinned States for Water Droplet Transportation and Oil-Water Separation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:4213-4221. [PMID: 29323869 DOI: 10.1021/acsami.7b15909] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Superhydrophobic surfaces with tunable adhesion from lotus-leaf to rose-petal states have generated much attention for their potential applications in self-cleaning, anti-icing, oil-water separation, microdroplet transportation, and microfluidic devices. Herein we report a facile magnetic-field-manipulation strategy to fabricate dual-functional superhydrophobic textiles with asymmetric roll-down/pinned states on the two surfaces of the textile simultaneously. Upon exposure to a static magnetic field, fluoroalkylsilane-modified iron oxide (F-Fe3O4) nanoparticles in polydimethylsiloxane (PDMS) moved along the magnetic field to construct discrepant hierarchical structures and roughnesses on the two sides of the textile. The positive surface (closer to the magnet, or P-surface) showed a water contact angle up to 165°, and the opposite surface (or O-surface) had a water contact angle of 152.5°. The P-surface where water droplets easily slid off with a sliding angle of 7.5° appeared in the "roll-down" state as Cassie mode, while the O-surface was in the "pinned" state as Wenzel mode, where water droplets firmly adhered even at vertical (90°) and inverted (180°) angles. The surface morphology and wetting mode were adjustable by varying the ratios of F-Fe3O4 nanoparticles and PDMS. By taking advantage of the asymmetric adhesion behaviors, the as-fabricated superhydrophobic textile was successfully applied in no-loss microdroplet transportation and oil-water separation. Our method is simple and cost-effective. The fabricated textile has the characteristics of superhydrophobicity, magnetic responsiveness, excellent chemical stability, adjustable surface morphology, and controllable adhesion. Our findings conceivably stand out as a new tool to fabricate functional superhydrophobic materials with asymmetric surface properties for various potential applications.
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Affiliation(s)
| | | | | | | | | | | | | | - Jie He
- Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269, United States
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15
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Zhu H, Chen D, Li N, Xu Q, Li H, He J, Wang H, Wu P, Lu J. Fabrication of Photocontrolled Surfaces for Oil/Water Separation through Sulfur(VI) Fluoride Exchange. Chemistry 2017; 23:14712-14717. [DOI: 10.1002/chem.201703309] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Haiguang Zhu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Dongyun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Najun Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Qingfeng Xu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Hua Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Jinghui He
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Hua Wang
- Department of Molecular Medicine; The Scripps Research Institute; La Jolla, CA 92037 USA
| | - Peng Wu
- Department of Molecular Medicine; The Scripps Research Institute; La Jolla, CA 92037 USA
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
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16
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Osterwinter GJ, Navarro-Crespo R, Prucker O, Henze M, Rühe J. Surface-attached polymer networks through carbene intermediates generated from α-diazo esters. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28702] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gregor J. Osterwinter
- Department of Microsystems Engineering (IMTEK), Laboratory of Chemistry and Physics of Interfaces; University of Freiburg; Freiburg 79110 Germany
| | - Rodrigo Navarro-Crespo
- Department of Microsystems Engineering (IMTEK), Laboratory of Chemistry and Physics of Interfaces; University of Freiburg; Freiburg 79110 Germany
| | - Oswald Prucker
- Department of Microsystems Engineering (IMTEK), Laboratory of Chemistry and Physics of Interfaces; University of Freiburg; Freiburg 79110 Germany
| | - Michael Henze
- Department of Microsystems Engineering (IMTEK), Laboratory of Chemistry and Physics of Interfaces; University of Freiburg; Freiburg 79110 Germany
| | - Jürgen Rühe
- Department of Microsystems Engineering (IMTEK), Laboratory of Chemistry and Physics of Interfaces; University of Freiburg; Freiburg 79110 Germany
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17
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Hönes R, Kondrashov V, Huai H, Rühe J. Wetting Transitions in Polymer Nanograss Generated by Nanoimprinting. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Roland Hönes
- Department of Microsystems Engineering; University of Freiburg; Georges-Köhler-Allee 103 79110 Freiburg Germany
| | - Vitaliy Kondrashov
- Department of Microsystems Engineering; University of Freiburg; Georges-Köhler-Allee 103 79110 Freiburg Germany
| | - Haosu Huai
- Department of Microsystems Engineering; University of Freiburg; Georges-Köhler-Allee 103 79110 Freiburg Germany
| | - Jürgen Rühe
- Department of Microsystems Engineering; University of Freiburg; Georges-Köhler-Allee 103 79110 Freiburg Germany
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18
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Wu S, Butt HJ. Near-infrared photochemistry at interfaces based on upconverting nanoparticles. Phys Chem Chem Phys 2017; 19:23585-23596. [DOI: 10.1039/c7cp01838j] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We review near-infrared photochemistry at interfaces based on upconverting nanoparticles, highlight its potential applications, and discuss the challenges.
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Affiliation(s)
- Si Wu
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
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19
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Chen L, He C, Huang Y, Huang J, Zhang Y, Gao Y. POSS-based fluorinated azobenzene-containing polymers: Photo-responsive behavior and evaluation of water repellency. J Appl Polym Sci 2016. [DOI: 10.1002/app.43540] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Liang Chen
- College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; 2999 North Renmin Road Shanghai 201620 China
| | - Chuanglong He
- College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; 2999 North Renmin Road Shanghai 201620 China
| | - Yangen Huang
- College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; 2999 North Renmin Road Shanghai 201620 China
| | - Jianbao Huang
- College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; 2999 North Renmin Road Shanghai 201620 China
| | - Yanzhong Zhang
- College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; 2999 North Renmin Road Shanghai 201620 China
| | - Yu Gao
- Research Institute of Donghua University; 2999 North Renmin Road Shanghai 201620 China
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20
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Schellenberger F, Encinas N, Vollmer D, Butt HJ. How Water Advances on Superhydrophobic Surfaces. PHYSICAL REVIEW LETTERS 2016; 116:096101. [PMID: 26991185 DOI: 10.1103/physrevlett.116.096101] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Indexed: 05/26/2023]
Abstract
Superliquid repellency can be achieved by nano- and microstructuring surfaces in such a way that protrusions entrap air underneath the liquid. It is still not known how the three-phase contact line advances on such structured surfaces. In contrast to a smooth surface, where the contact line can advance continuously, on a superliquid-repellent surface, the contact line has to overcome an air gap between protrusions. Here, we apply laser scanning confocal microscopy to get the first microscopic videos of water drops advancing on a superhydrophobic array of micropillars. In contrast to common belief, the liquid surface gradually bends down until it touches the top face of the next micropillars. The apparent advancing contact angle is 180°. On the receding side, pinning to the top faces of the micropillars determines the apparent receding contact angle. Based on these observations, we propose that the apparent receding contact angle should be used for characterizing superliquid-repellent surfaces rather than the apparent advancing contact angle and hysteresis.
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Affiliation(s)
- Frank Schellenberger
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Noemí Encinas
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Doris Vollmer
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Hans-Jürgen Butt
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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21
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Zhou YN, Li JJ, Luo ZH. Toward efficient water/oil separation material: Effect of copolymer composition on pH-responsive wettability and separation performance. AIChE J 2016. [DOI: 10.1002/aic.15145] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yin-Ning Zhou
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Jin-Jin Li
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Zheng-Hong Luo
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
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22
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Guo F, Guo Z. Inspired smart materials with external stimuli responsive wettability: a review. RSC Adv 2016. [DOI: 10.1039/c6ra04079a] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Recent progress in smart surfaces with responsive wettability upon external stimuli is reviewed and some of the barriers and potentially promising breakthroughs in this field are also briefly discussed.
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Affiliation(s)
- Fei Guo
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials
- Hubei University
- Wuhan 430062
- People's Republic of China
| | - Zhiguang Guo
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials
- Hubei University
- Wuhan 430062
- People's Republic of China
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23
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Zhou YN, Li JJ, Luo ZH. PhotoATRP-Based Fluorinated Thermosensitive Block Copolymer for Controllable Water/Oil Separation. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b02394] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Yin-Ning Zhou
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jin-Jin Li
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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24
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Versatile and controlled functionalization of polyferrocenylsilane-b
-polyvinylsiloxane block copolymers using a N
-hydroxysuccinimidyl ester strategy. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27727] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Huang J, Huang Y, He C, Gao Y. Synthesis and characterization of photoresponsive POSS-based polymers and their switchable water and oil wettability on cotton fabric. RSC Adv 2015. [DOI: 10.1039/c5ra19702c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Photoresponsive POSS-based polymers were successfully prepared via radical polymerization. The surface wettability of both water and oil on the polymers coated fabrics can be intelligently controlled by applying irradiation with UV or visible light.
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Affiliation(s)
- Jianbao Huang
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- 201620 Shanghai
- China
| | - Yangen Huang
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- 201620 Shanghai
- China
| | - Chuanglong He
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- 201620 Shanghai
- China
| | - Yu Gao
- Research Institute of Donghua University
- Donghua University
- 201620 Shanghai
- China
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26
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Huang JY, Lai YK, Pan F, Yang L, Wang H, Zhang KQ, Fuchs H, Chi LF. Multifunctional superamphiphobic TiO2 nanostructure surfaces with facile wettability and adhesion engineering. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:4865-4873. [PMID: 25070619 DOI: 10.1002/smll.201401024] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Revised: 06/25/2014] [Indexed: 06/03/2023]
Abstract
Compared to conventional top-down photo-cleavage method, a facile bottom-up ink-combination method to in situ and rapidly achieve water wettability and adhesion transition, with a great contrast on the superamphiphobic TiO2 nanostructured film, is described. Moreover, such combination method is suitable for various kinds of superamphiphobic substrate. Oil-based ink covering or removing changes not only the topographical morphology but also surface chemical composition, and these resultant topographical morphology and composition engineering realize the site-selectively switchable wettability varying from superamphiphobicity to amphiphilicity, and water adhesion between sliding superamphiphobicity and sticky superamphiphobicity in micro-scale. Additionally, positive and negative micro-pattern can be achieved by taking advantage of the inherent photocatalytic property of TiO2 with the assistance of anti-UV light ink mask. Finally, the potential applications of the site-selectively sticky superamphiphobic surface were demonstrated. In a proof-of-concept study, the microdroplet manipulation (storage, moving, mixing, and transfer), specific gas sensing, wettability template for positive and negative ZnO patterning, and site-selective cell immobilization have been demonstrated. This study will give an important input to the field of advanced functional material surfaces with special wettability.
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Affiliation(s)
- Jian-Ying Huang
- National Engineering Laboratory of Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, P.R. China
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27
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Passoni L, Bonvini G, Luzio A, Facibeni A, Bottani CE, Di Fonzo F. Multiscale effect of hierarchical self-assembled nanostructures on superhydrophobic surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:13581-13587. [PMID: 25346328 DOI: 10.1021/la503410m] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this work, we describe self-assembled surfaces with a peculiar multiscale organization, from the nanoscale to the microscale, exhibiting the Cassie-Baxter wetting regime with extremely low water adhesion: floating drops regime with roll-off angles < 5°. These surfaces comprise bundles of hierarchical, quasi-one-dimensional (1D) TiO2 nanostructures functionalized with a fluorinated molecule (PFNA). While the hierarchical nanostructures are the result of a gas-phase self-assembly process, their bundles are the result of the capillary forces acting between them when the PFNA solvent evaporates. Nanometric features are found to influence the hydrophobic behavior of the surface, which is enhanced by the micrometric structures up to the achievement of the superhydrophobic Cassie-Baxter state (contact angle (CA) ≫ 150°). Thanks to their high total and diffuse transmittance and their self-cleaning properties, these surfaces could be interesting for several applications such as smart windows and photovoltaics where light management and surface cleanliness play a crucial role. Moreover, the multiscale analysis performed in this work contributes to the understanding of the basic mechanisms behind extreme wetting behaviors.
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Affiliation(s)
- Luca Passoni
- Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia , Via Giovanni Pascoli, 70/3, 20133 Milano, Italy
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28
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Zhou YN, Li JJ, Zhang Q, Luo ZH. Light-responsive smart surface with controllable wettability and excellent stability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:12236-12242. [PMID: 25262829 DOI: 10.1021/la501907w] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Novel fluorinated gradient copolymer was designed for smart surface with light-responsive controllable wettability and excellent stability. The switchable mechanism and physicochemical characteristics of the as-prepared surface decorated by designed polymeric material were investigated by ultraviolet-visible (UV-vis) spectrum, scanning electron microscope (SEM), atomic force microscope (AFM), and X-ray photoelectron spectroscopy (XPS). Thanks to the functional film and surface roughening, etched silicon surface fabricated by copolymer involving spiropyran (Sp) moieties possesses a fairly large variation range of WCA (28.1°) and achieves the transformation between hydrophilicity (95.2° < 109.2°) and hydrophobicity (123.3° > 109.2°) relative to blank sample (109.2°). The synthetic strategy and developed smart surface offer a promising application in coating with controllable wettability, which bridge the gap between chemical structure and material properties.
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Affiliation(s)
- Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China
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29
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Zhang W, Cao Y, Liu N, Chen Y, Feng L. A novel solution-controlled hydrogel coated mesh for oil/water separation based on monolayer electrostatic self-assembly. RSC Adv 2014. [DOI: 10.1039/c4ra09140j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Zhou YN, Li JJ, Zhang Q, Luo ZH. A novel fluorinated polymeric product for photoreversibly switchable hydrophobic surface. AIChE J 2014. [DOI: 10.1002/aic.14602] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yin-Ning Zhou
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Jin-Jin Li
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Qing Zhang
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Zheng-Hong Luo
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
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31
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Stumpel JE, Broer DJ, Schenning APHJ. Stimuli-responsive photonic polymer coatings. Chem Commun (Camb) 2014; 50:15839-48. [DOI: 10.1039/c4cc05072j] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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32
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33
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Chen KY, Ivashenko O, Carroll GT, Robertus J, Kistemaker JCM, London G, Browne WR, Rudolf P, Feringa BL. Control of Surface Wettability Using Tripodal Light-Activated Molecular Motors. J Am Chem Soc 2014; 136:3219-24. [DOI: 10.1021/ja412110t] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Kuang-Yen Chen
- Centre
for Systems Chemistry,
Stratingh Institute for Chemistry and Zernike Institute for Advanced
Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Oleksii Ivashenko
- Centre
for Systems Chemistry,
Stratingh Institute for Chemistry and Zernike Institute for Advanced
Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Gregory T. Carroll
- Centre
for Systems Chemistry,
Stratingh Institute for Chemistry and Zernike Institute for Advanced
Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Jort Robertus
- Centre
for Systems Chemistry,
Stratingh Institute for Chemistry and Zernike Institute for Advanced
Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Jos C. M. Kistemaker
- Centre
for Systems Chemistry,
Stratingh Institute for Chemistry and Zernike Institute for Advanced
Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Gábor London
- Centre
for Systems Chemistry,
Stratingh Institute for Chemistry and Zernike Institute for Advanced
Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Wesley R. Browne
- Centre
for Systems Chemistry,
Stratingh Institute for Chemistry and Zernike Institute for Advanced
Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Petra Rudolf
- Centre
for Systems Chemistry,
Stratingh Institute for Chemistry and Zernike Institute for Advanced
Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Ben L. Feringa
- Centre
for Systems Chemistry,
Stratingh Institute for Chemistry and Zernike Institute for Advanced
Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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34
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Abrakhi S, Péralta S, Fichet O, Teyssié D, Cantin S. Poly(azobenzene acrylate-co-fluorinated acrylate) spin-coated films: influence of the composition on the photo-controlled wettability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:9499-9509. [PMID: 23805895 DOI: 10.1021/la400938j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The wetting properties of spin-coated films of copolymers based on azobenzene and fluorinated units have been investigated. The copolymers, denoted as poly(Azo-co-AcRf6), have been synthesized by free-radical polymerization of different proportions of acrylate monomers bearing either an azobenzene group or a semifluorinated side chain. The UV-visible spectroscopy analysis of the different spin-coating films through a cycle of UV and visible light irradiation indicates the reversible trans-cis isomerization of azobenzene groups. Simultaneously, atomic force microscopy shows that surface roughness does not exceed 1 nm. Advancing and receding contact angles of water and diiodomethane have been measured before and after UV photoirradiation of the different surfaces. In particular, a decrease in the advancing contact angles has been observed upon trans-cis isomerization of azobenzene groups. Switching variations up to 50° have been evidenced without any introduction of surface nanoroughness. Surface free-energy evaluations have been deduced from these measurements, including dispersive and polar components. The results show that, through surface composition and UV photoirradiation, a large range of surface free-energies can be obtained, from 7 to 46 mN·m(-1).
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Affiliation(s)
- Sanae Abrakhi
- Laboratoire de Physicochimie des Polymères et des Interfaces (LPPI, EA 2528), Institut des Matériaux, Université de Cergy-Pontoise, 5 mail Gay-Lussac Neuville/Oise, 95000 Cergy-Pontoise Cedex, France
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35
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Elbert J, Gallei M, Rüttiger C, Brunsen A, Didzoleit H, Stühn B, Rehahn M. Ferrocene Polymers for Switchable Surface Wettability. Organometallics 2013. [DOI: 10.1021/om400468p] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Johannes Elbert
- Ernst-Berl Institute for Chemical
Engineering and Macromolecular Science, Technische Universität Darmstadt, Petersenstraße
22, D-64287 Darmstadt, Germany
| | - Markus Gallei
- Ernst-Berl Institute for Chemical
Engineering and Macromolecular Science, Technische Universität Darmstadt, Petersenstraße
22, D-64287 Darmstadt, Germany
| | - Christian Rüttiger
- Ernst-Berl Institute for Chemical
Engineering and Macromolecular Science, Technische Universität Darmstadt, Petersenstraße
22, D-64287 Darmstadt, Germany
| | - Annette Brunsen
- Ernst-Berl Institute for Chemical
Engineering and Macromolecular Science, Technische Universität Darmstadt, Petersenstraße
22, D-64287 Darmstadt, Germany
| | - Haiko Didzoleit
- Institute of Condensed Matter
Physics, Technische Universität Darmstadt, Hochschulstraße 8, D-64289 Darmstadt, Germany
| | - Bernd Stühn
- Institute of Condensed Matter
Physics, Technische Universität Darmstadt, Hochschulstraße 8, D-64289 Darmstadt, Germany
| | - Matthias Rehahn
- Ernst-Berl Institute for Chemical
Engineering and Macromolecular Science, Technische Universität Darmstadt, Petersenstraße
22, D-64287 Darmstadt, Germany
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Groten J, Rühe J. Surfaces with combined microscale and nanoscale structures: a route to mechanically stable superhydrophobic surfaces? LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:3765-3772. [PMID: 23363078 DOI: 10.1021/la304641q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Materials with superhydrophobic properties are usually generated by covering the surfaces with hydrophobic nanoscale rough features. A major problem, however, for any practical application of such strongly water-repellent surfaces is the mechanical fragility of the nanostructures. Even moderate forces caused by touching or rubbing the surfaces are frequently strong enough to destroy the nanostructures and lead to the loss of the superhydrophobic properties. In this article, we study the mechanical stability of superhydrophobic surfaces with three different topographies: nano- and microscale features and surfaces carrying a combination of both. The surfaces are generated by silicon etching and subsequent coating with a monolayer of a fluoropolymer (PFA). We perform controlled wear tests on the different surfaces and discuss the impact of wear on the wetting properties of the different surfaces.
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Affiliation(s)
- Jonas Groten
- Department of Microsystems Engineering - IMTEK, Chemistry and Physics of Interfaces, University of Freiburg, 79110 Freiburg, Germany
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