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Hausken KG, Frevol RL, Dowdle KP, Young AN, Talusig JM, Holbrook CC, Rubin BK, Murphy AR. Quantitative Functionalization of the Tyrosine Residues in Silk Fibroin through an Amino‐Tyrosine Intermediate. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kian G. Hausken
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Romane L. Frevol
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Kimberly P. Dowdle
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Aleena N. Young
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Jeremy M. Talusig
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Carolynne C. Holbrook
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Benjamin K. Rubin
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Amanda R. Murphy
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
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Emonson NS, Eyckens DJ, Allardyce BJ, Hendlmeier A, Stanfield MK, Soulsby LC, Stojcevski F, Henderson LC. Using In Situ Polymerization to Increase Puncture Resistance and Induce Reversible Formability in Silk Membranes. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2252. [PMID: 32422884 PMCID: PMC7287606 DOI: 10.3390/ma13102252] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/08/2020] [Accepted: 05/11/2020] [Indexed: 11/17/2022]
Abstract
Silk fibroin is an excellent biopolymer for application in a variety of areas, such as textiles, medicine, composites and as a novel material for additive manufacturing. In this work, silk membranes were surface modified by in situ polymerization of aqueous acrylic acid, initiated by the reduction of various aryldiazonium salts with vitamin C. Treatment times of 20 min gave membranes which possessed increased tensile strength, tensile modulus, and showed significant increased resistance to needle puncture (+131%), relative to 'untreated' standards. Most interestingly, the treated silk membranes were able to be reversibly formed into various shapes via the hydration and plasticizing of the surface bound poly(acrylic acid), by simply steaming the modified membranes. These membranes and their unique properties have potential applications in advanced textiles, and as medical materials.
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Affiliation(s)
| | | | | | | | | | | | - Filip Stojcevski
- Carbon Nexus, Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia; (N.S.E.); (D.J.E.); (B.J.A.); (A.H.); (M.K.S.); (L.C.S.)
| | - Luke C. Henderson
- Carbon Nexus, Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia; (N.S.E.); (D.J.E.); (B.J.A.); (A.H.); (M.K.S.); (L.C.S.)
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3
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Pirone D, Marturano V, Del Pezzo R, Fernández Prieto S, Underiner T, Giamberini M, Tylkowski B. Molecular Design of Microcapsule Shells for Visible Light-Triggered Release. Polymers (Basel) 2019; 11:E904. [PMID: 31108926 PMCID: PMC6572248 DOI: 10.3390/polym11050904] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 12/19/2022] Open
Abstract
The development of photo-responsive capsules to tune and control the sustained-release of encapsulated actives is a fascinating and challenging route to improve the performances and effectiveness of a wide range of delivery applications. In this work, we report the preparation of visible light-responsive capsules obtained via oil-in-water interfacial polycondensation between modified diacyl-chloride azobenzene moiety and diamine flexible spacer in the presence of cross-linkers with different structures and functionalities. The effect on the release profile of the encapsulated perfume oil was investigated using three flexible spacers with different lengths (1,8-diaminooctane; 1,6-diaminohexane and 1,4-diaminobutane) and two types of cross-linkers (1,3,5-benzenetricarbonyl trichloride and melamine). We analyzed how the properties of microcapsules can be tailored changing the design of the shell structure. Fine tuning of the perfume release profiles was obtained. The changes in capsules size and morphology due to visible light irradiation were monitored via light scattering, optical microscopy and atomic force microscopy. Perfume release was 50% faster in the systems prepared with melamine as the cross-linker. Modelling studies were carried out to support the discussion of the experimental results.
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Affiliation(s)
- Domenico Pirone
- Department of Chemical Engineering, Rovira i Virgili University, Av. Països Catalans 26, 43007 Tarragona, Spain.
- Centre Tecnològic de la Química de Catalunya, Carrer Marcelli Domingo s/n, 43007 Tarragona, Spain.
- Procter & Gamble Services Company n.v., Temselaan 100, 1853 Strombeek-Bever, Belgium.
| | - Valentina Marturano
- Department of Chemical, Materials, and Production Engineering (DICMAPI), University of Naples "Federico II", P. le Tecchio, 80, 80125 Napoli, Italy.
| | - Rita Del Pezzo
- Department of Chemical Engineering, Rovira i Virgili University, Av. Països Catalans 26, 43007 Tarragona, Spain.
- Centre Tecnològic de la Química de Catalunya, Carrer Marcelli Domingo s/n, 43007 Tarragona, Spain.
- Procter & Gamble Services Company n.v., Temselaan 100, 1853 Strombeek-Bever, Belgium.
| | | | - Todd Underiner
- The Procter and Gamble Company, 6210 Center Hill Avenue, Cincinnati, OH 45224, USA.
| | - Marta Giamberini
- Department of Chemical Engineering, Rovira i Virgili University, Av. Països Catalans 26, 43007 Tarragona, Spain.
| | - Bartosz Tylkowski
- Department of Chemical Engineering, Rovira i Virgili University, Av. Països Catalans 26, 43007 Tarragona, Spain.
- Centre Tecnològic de la Química de Catalunya, Carrer Marcelli Domingo s/n, 43007 Tarragona, Spain.
- The Procter and Gamble Company, 6210 Center Hill Avenue, Cincinnati, OH 45224, USA.
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Del Pezzo R, Bandeira NA, Trojanowska A, Fernandez Prieto S, Underiner T, Giamberini M, Tylkowski B. Ortho-substituted azobenzene: shedding light on new benefits. PURE APPL CHEM 2018. [DOI: 10.1515/pac-2018-0719] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Novel functional polymeric microcapsules, based on modified azobenzene moieties, are exhaustively investigated, both from a theoretical and experimental points of view. Theoretical calculations and several measurements demonstrate that visible light can act as a trigger for release of encapsulated material, as a consequence of trans-cis isomerization which modifies microcapsule surface topography and can induce a “squeezing” release mechanism. Interfacial polymerization of an oil-in-water emulsion is performed and leads to core-shell microcapsules which are characterized by means of atomic force microscopy (AFM), optical microscopy (OM), scanning electron microscopy (SEM) and light scattering. These analyses put into evidence that microcapsules’ size and surface morphology are strongly affected by irradiation under visible light: moreover, these changes can be reverted by sample exposure to temperatures around 50°C. This last evidence is also confirmed by NMR kinetic analyses on modified azobenzene moiety. Finally, it is shown that these smart microcapsules can be successfully used to get a controlled release of actives such as fragrancies, as a consequence of visible light irradiation, as confirmed by an olfactive panel.
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Affiliation(s)
- Rita Del Pezzo
- Department of Chemical Engineering , Rovira i Virgili University , Av. Països Catalans 26 , Tarragona 43007 , Spain
- The Procter and Gamble Company , Temselaan 100 , Strombeek-Bever 1853 , Belgium
| | - Nuno A.G. Bandeira
- Biosystems and Integrative Sciences Institute, Faculty of Sciences , University of Lisbon , Campo Grande-C8 , Lisboa 1749-016 , Portugal
- Centro de Química Estrutural – Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais , Lisboa 1049-001 , Portugal
- Institute of Chemical Research of Catalonia (ICIQ) – Avda. Països Catalans , Tarragona 16-43007 , Spain
| | - Anna Trojanowska
- Department of Chemical Engineering , Rovira i Virgili University , Av. Països Catalans 26 , Tarragona 43007 , Spain
- Centre Tecnològic de la Química de Catalunya , Carrer Marcelli Domingo s/n , Tarragona 43007 , Spain
| | | | - Todd Underiner
- The Procter and Gamble Company , 6210 Center Hill Avenue , Cincinnati, OH 45224 , USA
| | - Marta Giamberini
- Department of Chemical Engineering , Rovira i Virgili University , Av. Països Catalans 26 , Tarragona 43007 , Spain
- Centre Tecnològic de la Química de Catalunya , Carrer Marcelli Domingo s/n , Tarragona 43007 , Spain
| | - Bartosz Tylkowski
- Department of Chemical Engineering , Rovira i Virgili University , Av. Països Catalans 26 , Tarragona 43007 , Spain
- Centre Tecnològic de la Química de Catalunya , Carrer Marcelli Domingo s/n , Tarragona 43007 , Spain
- The Procter and Gamble Company , 6210 Center Hill Avenue , Cincinnati, OH 45224 , USA
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Landry MJ, Rollet FG, Kennedy TE, Barrett CJ. Layers and Multilayers of Self-Assembled Polymers: Tunable Engineered Extracellular Matrix Coatings for Neural Cell Growth. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:8709-8730. [PMID: 29481757 DOI: 10.1021/acs.langmuir.7b04108] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Growing primary cells and tissue in long-term cultures, such as primary neural cell culture, presents many challenges. A critical component of any environment that supports neural cell growth in vivo is an appropriate 2-D surface or 3-D scaffold, typically in the form of a thin polymer layer that coats an underlying plastic or glass substrate and aims to mimic critical aspects of the extracellular matrix. A fundamental challenge to mimicking a hydrophilic, soft natural cell environment is that materials with these properties are typically fragile and are difficult to adhere to and stabilize on an underlying plastic or glass cell culture substrate. In this review, we highlight the current state of the art and overview recent developments of new artificial extracellular matrix (ECM) surfaces for in vitro neural cell culture. Notably, these materials aim to strike a balance between being hydrophilic and soft while also being thick, stable, robust, and bound well to the underlying surface to provide an effective surface to support long-term cell growth. We focus on improved surface and scaffold coating systems that can mimic the natural physicochemical properties that enhance neuronal survival and growth, applied as soft hydrophilic polymer coatings for both in vitro cell culture and for implantable neural probes and 3-D matrixes that aim to enhance stability and longevity to promote neural biocompatibility in vivo. With respect to future developments, we outline four emerging principles that serve to guide the development of polymer assemblies that function well as artificial ECMs: (a) design inspired by biological systems and (b) the employment of principles of aqueous soft bonding and self-assembly to achieve (c) a high-water-content gel-like coating that is stable over time in a biological environment and possesses (d) a low modulus to more closely mimic soft, compliant real biological tissue. We then highlight two emerging classes of thick material coatings that have successfully captured these guiding principles: layer-by-layer deposited water-soluble polymers (LbL) and silk fibroin (SF) materials. Both materials can be deposited from aqueous solution yet transition to a water-insoluble coating for long-term stability while retaining a softness and water content similar to those of biological materials. These materials hold great promise as next-generation biocompatible coatings for tissue engineers and for chemists and biologists within the biomedical field.
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Angelini A, Pirani F, Frascella F, Descrovi E. Reconfigurable elastomeric graded-index optical elements controlled by light. LIGHT, SCIENCE & APPLICATIONS 2018; 7:7. [PMID: 30839590 PMCID: PMC6106995 DOI: 10.1038/s41377-018-0005-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 02/05/2018] [Accepted: 02/07/2018] [Indexed: 05/29/2023]
Abstract
In many optical applications, there is an increasing need for dynamically tunable optical elements that are able to shape the wavefront of light 'on demand'. In this work, an elastomeric easy-to-fabricate optical element whose transmission functions can be reversibly phase configured by visible light is demonstrated. The light responsivity of proper azopolymers incorporated within an elastomeric matrix is exploited to induce a light-controlled graded refractive index (GRIN) distribution within the bulk compound. The induced refractive index distribution is continuous and conformal to the intensity profile of the illumination at moderate power. A 100 mW doubled-frequency Nd:YAG Gaussian beam focused to a 650 μm waist is shown to induce a maximum relative refractive index change of ~0.4% in the elastomeric matrix, with an approximately parabolic profile. The restoring characteristics of the elastomeric matrix enable full recovery of the initial homogeneous refractive index distribution within a few seconds when the incident laser is switched off. As an exemplary application, the configurable GRIN element is used in a microscope-based imaging system for light control of the effective focal length.
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Affiliation(s)
- Angelo Angelini
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, C.so Duca degli Abruzzi 24, Torino, IT-10129 Italy
| | - Federica Pirani
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, C.so Duca degli Abruzzi 24, Torino, IT-10129 Italy
- Center for Sustainable Future Technologies@PoliTo, Istituto Italiano di Tecnologia, C.so Trento 21, Torino, IT-10129 Italy
| | - Francesca Frascella
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, C.so Duca degli Abruzzi 24, Torino, IT-10129 Italy
| | - Emiliano Descrovi
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, C.so Duca degli Abruzzi 24, Torino, IT-10129 Italy
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Palermo G, Barberi L, Perotto G, Caputo R, De Sio L, Umeton C, Omenetto FG. Conformal Silk-Azobenzene Composite for Optically Switchable Diffractive Structures. ACS APPLIED MATERIALS & INTERFACES 2017; 9:30951-30957. [PMID: 28820237 DOI: 10.1021/acsami.7b09986] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The use of biomaterials as optical components has recently attracted attention because of their ease of functionalization and fabrication, along with their potential use when integrated with biological materials. We present here an observation of the optical properties of a silk-azobenzene material (Azosilk) and demonstrate the operation of an Azosilk/PDMS composite structure that serves as a conformable and switchable optical diffractive structure. Characterization of thermal and isomeric properties of the device, along with its overall performance, is presented in terms of diffractive characteristics and response times. The ease of manufacturing and functionalization opens a promising avenue for rapid device prototyping and interfaces of expanded utility.
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Affiliation(s)
- Giovanna Palermo
- Department of Physics, University of Calabria , 87036 Arcavacata di Rende, Cosenza, Italy
- CNR-Nanotec, 87036 Cosenza, Italy
| | - Luca Barberi
- Department of Physics, University of Calabria , 87036 Arcavacata di Rende, Cosenza, Italy
| | - Giovanni Perotto
- Silklab, Department of Biomedical Engineering, Tufts University , 200 Boston Avenue, Suite 4875, Medford, Massachusetts 02155, United States
| | - Roberto Caputo
- Department of Physics, University of Calabria , 87036 Arcavacata di Rende, Cosenza, Italy
- CNR-Nanotec, 87036 Cosenza, Italy
| | - Luciano De Sio
- CNR-Nanotec, 87036 Cosenza, Italy
- Beam Engineering for Advanced Measurements Company, 1300 Lee Road, Orlando, Florida 32789, United States
| | - Cesare Umeton
- Department of Physics, University of Calabria , 87036 Arcavacata di Rende, Cosenza, Italy
- CNR-Nanotec, 87036 Cosenza, Italy
| | - Fiorenzo G Omenetto
- Silklab, Department of Biomedical Engineering, Tufts University , 200 Boston Avenue, Suite 4875, Medford, Massachusetts 02155, United States
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