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Chau AL, Karnaukh KM, Maskiewicz I, Read de Alaniz J, Pitenis AA. Photoresponsive hydrogel friction. SOFT MATTER 2024. [PMID: 39225393 DOI: 10.1039/d4sm00677a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Photoresponsive hydrogels are an emerging class of stimuli-responsive materials that exhibit changes in physical or chemical properties in response to light. Previous investigations have leveraged photothermal mechanisms to achieve reversible changes in hydrogel friction, although few have focused on photochemical means. To date, the tribological properties of photoswitchable hydrogels (e.g., friction and lubrication) have remained underexplored. In this work, we incorporated photoresponsive methoxy-spiropyran-methacrylate monomers (methoxy-SP-MA) into a hydrogel network to form a copolymerized system of poly(N-isopropylacrylamide-co-2-acrylamido-2-methylpropane sulfonic acid-co-methoxy-spiropyran-methacrylate) (p(NIPAAm-co-AMPS-co-SP)). We demonstrated repeatable photoresponsive changes to swelling, friction, and stiffness over three light cycles. Our findings suggest that volume changes driven by the decreased hydrophilicity of the methoxy-SP-MA upon light irradiation are responsible for differences in the mechanical and tribological properties of our photoresponsive hydrogels. Our results could inform future designs of photoswitchable hydrogels for applications ranging from biomedical applications to soft robotics.
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Affiliation(s)
- Allison L Chau
- Materials Department, University of California, Santa Barbara, Santa Barbara, CA, USA.
| | - Kseniia M Karnaukh
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA, USA.
| | - Ian Maskiewicz
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA, USA.
| | - Javier Read de Alaniz
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA, USA.
| | - Angela A Pitenis
- Materials Department, University of California, Santa Barbara, Santa Barbara, CA, USA.
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2
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Zheng Y, Farrukh A, Del Campo A. Optoregulated Biointerfaces to Trigger Cellular Responses. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14459-14471. [PMID: 30392367 DOI: 10.1021/acs.langmuir.8b02634] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Optoregulated biointerfaces offer the possibility to manipulate the interactions between cell membrane receptors and the extracellular space. This Invited Feature Article summarizes recent efforts by our group and others during the past decade to develop light-responsive biointerfaces to stimulate cells and elicit cellular responses using photocleavable protecting groups (PPG) as our working tool. This article begins by providing a brief introduction to available PPGs, with a special focus on the widely used o-nitrobenzyl family, followed by an overview of molecular design principles for the control of bioactivity in the context of cell-material interactions and the characterization methods to use in following the photoreaction at surfaces. We present various light-guided cellular processes using PPGs, including cell adhesion, release, migration, proliferation, and differentiation, both in vitro and in vivo. Finally, this Invited Feature Article closes with our perspective on the current status and future challenges of this topic.
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Affiliation(s)
- Yijun Zheng
- INM - Leibniz Institute for New Materials, Campus D2 2 , 66123 Saarbrücken , Germany
| | - Aleeza Farrukh
- INM - Leibniz Institute for New Materials, Campus D2 2 , 66123 Saarbrücken , Germany
| | - Aránzazu Del Campo
- INM - Leibniz Institute for New Materials, Campus D2 2 , 66123 Saarbrücken , Germany
- Chemistry Department , Saarland University , 66123 Saarbrücken , Germany
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3
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Liu J, Wu X, Zhang Y, Liu Y. Photocleavable Supramolecular Polysaccharide Nanoparticles for Targeted Drug Release in Cancer Cells. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800552] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jiang‐Hua Liu
- College of Chemistry, State Key Laboratory of Elemento-OrganicChemistry, Nankai University Tianjin 300071 China
| | - Xianjing Wu
- College of Chemistry, State Key Laboratory of Elemento-OrganicChemistry, Nankai University Tianjin 300071 China
| | - Ying‐Ming Zhang
- College of Chemistry, State Key Laboratory of Elemento-OrganicChemistry, Nankai University Tianjin 300071 China
| | - Yu Liu
- College of Chemistry, State Key Laboratory of Elemento-OrganicChemistry, Nankai University Tianjin 300071 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
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4
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El Zubir O, Xia S, Ducker RE, Wang L, Mullin N, Cartron ML, Cadby AJ, Hobbs JK, Hunter CN, Leggett GJ. From Monochrome to Technicolor: Simple Generic Approaches to Multicomponent Protein Nanopatterning Using Siloxanes with Photoremovable Protein-Resistant Protecting Groups. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8829-8837. [PMID: 28551995 PMCID: PMC5588097 DOI: 10.1021/acs.langmuir.7b01255] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 05/25/2017] [Indexed: 06/07/2023]
Abstract
We show that sequential protein deposition is possible by photodeprotection of films formed from a tetraethylene-glycol functionalized nitrophenylethoxycarbonyl-protected aminopropyltriethoxysilane (NPEOC-APTES). Exposure to near-UV irradiation removes the protein-resistant protecting group, and allows protein adsorption onto the resulting aminated surface. The protein resistance was tested using proteins with fluorescent labels and microspectroscopy of two-component structures formed by micro- and nanopatterning and deposition of yellow and green fluorescent proteins (YFP/GFP). Nonspecific adsorption onto regions where the protecting group remained intact was negligible. Multiple component patterns were also formed by near-field methods. Because reading and writing can be decoupled in a near-field microscope, it is possible to carry out sequential patterning steps at a single location involving different proteins. Up to four different proteins were formed into geometric patterns using near-field lithography. Interferometric lithography facilitates the organization of proteins over square cm areas. Two-component patterns consisting of 150 nm streptavidin dots formed within an orthogonal grid of bars of GFP at a period of ca. 500 nm could just be resolved by fluorescence microscopy.
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Affiliation(s)
- Osama El Zubir
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, United
Kingdom
| | - Sijing Xia
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, United
Kingdom
| | - Robert E. Ducker
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, United
Kingdom
| | - Lin Wang
- Department
of Physics and Astronomy, University of
Sheffield, Sheffield S3 7RH, United Kingdom
| | - Nic Mullin
- Department
of Physics and Astronomy, University of
Sheffield, Sheffield S3 7RH, United Kingdom
| | - Michaël L. Cartron
- Department
of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom
| | - Ashley J. Cadby
- Department
of Physics and Astronomy, University of
Sheffield, Sheffield S3 7RH, United Kingdom
| | - Jamie K. Hobbs
- Department
of Physics and Astronomy, University of
Sheffield, Sheffield S3 7RH, United Kingdom
| | - C. Neil Hunter
- Department
of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom
| | - Graham J. Leggett
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, United
Kingdom
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5
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Lee ME, Gungor E, Armani AM. Photocleavage of Poly(methyl acrylate) with Centrally Located o-Nitrobenzyl Moiety: Influence of Environment on Kinetics. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01496] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Michele E. Lee
- Mork Family
Department of
Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, United States
| | - Eda Gungor
- Mork Family
Department of
Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, United States
| | - Andrea M. Armani
- Mork Family
Department of
Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, United States
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Soares AMS, Hungerford G, Costa SPG, Gonçalves MST. Photoactivation of Butyric Acid from 6-Aminobenzocoumarin Cages. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500396] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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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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García-Fernández L, Specht A, Del Campo A. A Polyurethane-Based Positive Photoresist. Macromol Rapid Commun 2014; 35:1801-1807. [PMID: 25220363 DOI: 10.1002/marc.201400331] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 07/17/2014] [Indexed: 02/28/2024]
Abstract
Polyurethane (PU) monomer mixtures containing commercially available o-nitrobenzyl-based photocleavable monomers have been formulated and tested as low-cost positive tone photoresists. The photolysis reaction is studied by UV spectroscopy. Well-defined micropatterns on 2 μm thick photodegradable PU films are obtained using 365 nm light exposure. This strategy is also extended to improved formulations based on synthesized o-nitrobiphenylpropyl derivatives with enhanced photochemical properties for single photon excitation and high two-photon absorption cross-sections. Improved pattern resolution in 2D and the capability of 3D resolution using a scanning laser at 780 nm is demonstrated. This work demonstrates the potential of PUs as readily available, versatile, and easy-to-use photoresist materials for low-cost lithography applications.
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Xie L, Wang T, Huang T, Hou W, Huang G, Du Y. Dew inspired breathing-based detection of genetic point mutation visualized by naked eye. Sci Rep 2014; 4:6300. [PMID: 25199907 PMCID: PMC4158330 DOI: 10.1038/srep06300] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 07/29/2014] [Indexed: 01/07/2023] Open
Abstract
A novel label-free method based on breathing-induced vapor condensation was developed for detection of genetic point mutation. The dew-inspired detection was realized by integration of target-induced DNA ligation with rolling circle amplification (RCA). The vapor condensation induced by breathing transduced the RCA-amplified variances in DNA contents into visible contrast. The image could be recorded by a cell phone for further or even remote analysis. This green assay offers a naked-eye-reading method potentially applied for point-of-care liver cancer diagnosis in resource-limited regions.
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Affiliation(s)
- Liping Xie
- 1] Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing 100084, China [2] Institute of Molecular Medicine, College of Life and Health Science, Northeastern University, Shenyang 110004, China
| | - Tongzhou Wang
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing 100084, China
| | - Tianqi Huang
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing 100084, China
| | - Wei Hou
- Tianjin Second People's Hospital and Tianjin Institute of Hepatology, Tianjin 300192, China
| | - Guoliang Huang
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing 100084, China
| | - Yanan Du
- 1] Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing 100084, China [2] Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310003, China
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Kuttner C, Maier PC, Kunert C, Schlaad H, Fery A. Direct thiol-ene photocoating of polyorganosiloxane microparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:16119-16126. [PMID: 24320891 DOI: 10.1021/la4039864] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This work presents the modification of polyorganosiloxane microparticles by surface-initiated thiol-ene photochemistry. By this photocoating, we prepared different core/shell particles with a polymeric shell within narrow size distributions (PDI = 0.041-0.12). As core particle, we used highly monodisperse spherical polyorganosiloxane particles prepared from (3-mercaptopropyl)trimethoxysilane (MPTMS) with a radius of 0.49 μm. We utilize the high surface coverage of mercaptopropyl functions to generate surface-localized radicals upon irradiation with UVA-light without additional photoinitiator. The continuous generation of radicals was followed by a dye degradation experiment (UV/vis spectroscopy). Surface-localized radicals were used as copolymer anchoring sites ("grafting-onto" deposition of different PB-b-PS diblock copolymers) and polymerization initiators ("grafting-from" polymerization of PS). Photocoated particles were characterized for their morphology (SEM, TEM), size, and size distribution (DLS). For PS-coated particles, the polymer content (up to 24% in 24 h) was controlled by the polymerization time upon UVA exposure. The coating thickness was evaluated by thermogravimetric analysis (TGA) using a simple analytical core/shell model. Raman spectroscopy was applied to directly follow the time-dependent consumption of thiols by photoinitiation.
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Affiliation(s)
- Christian Kuttner
- Department of Physical Chemistry II, University of Bayreuth , Bayreuth 95440, Germany
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