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Junker M, Regenspurg JA, Valdes Rivera CI, Brinke ET, de Vos WM. Effects of Feed Solution pH on Polyelectrolyte Multilayer Nanofiltration Membranes. ACS APPLIED POLYMER MATERIALS 2023; 5:355-369. [PMID: 36660251 PMCID: PMC9841528 DOI: 10.1021/acsapm.2c01542] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Over the past decade polyelectrolyte multilayer (PEM)-based membranes have gained a lot of interest in the field of nanofiltration (NF) as an alternative to conventional polyamide-based thin film composite membranes. With great variety in fabrication conditions, these membranes can achieve superior properties such as high chemical resistance and excellent filtration performance. Some of the most common polyelectrolytes used to prepare NF membranes are weak, meaning that their charge density depends on pH within the normal window of operation relevant for potential applications (pH 0-14). This might cause a dependency of membrane properties on the pH of filtered solutions, as indicated by other applications of PEMs. In this work, the susceptibility of membrane structure (swelling and surface charge) and performance (permeability, molecular weight cutoff, and salt retention) toward the pH of the filtration solution was studied for four fundamentally different PEM systems: poly(diallyldimethylammonium chloride) (PDADMAC)/poly(sodium-4-styrenesulfonate) (PSS) (strong/strong), poly(allylamine hydrochloric acid) (PAH)/poly(acrylic acid) (PAA) (weak/weak), and PAH/PSS (weak/strong) and PAH/PSS+PAH/PAA (asymmetric). Slight variations in structure and performance of the PDADMAC/PSS-based membranes were observed. On the contrary, structure and performance of PAH/PAA-based membranes are very susceptible to feed solution pH. A continuous change in charge density with variation in pH significantly affects salt retention. An increased swelling at pH 9 translates to variation in permeability and molecular weight cutoff of the membrane. The susceptibility of PAH/PSS-based membranes to pH is less pronounced compared to the PAH/PAA-based membranes since only one of the polyelectrolytes involved is weak. No structural changes were observed, indicating additional specific interactions between the polyelectrolytes other than electrostatic forces that stabilize film structure. A combination of the PAH/PSS and PAH/PAA system (8 + 2 bilayers) also displays a clear dependency of both membrane structure and performance on solution pH, where PAH/PSS is dominating due to a higher bilayer number.
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Affiliation(s)
- Moritz
A. Junker
- Membrane
Science and Technology, University of Twente,
MESA+ Institute for Nanotechnology, P.O. Box 217, 7500 AEEnschede, The Netherlands
| | - Jurjen A. Regenspurg
- Membrane
Science and Technology, University of Twente,
MESA+ Institute for Nanotechnology, P.O. Box 217, 7500 AEEnschede, The Netherlands
| | - Cristobal I. Valdes Rivera
- Membrane
Science and Technology, University of Twente,
MESA+ Institute for Nanotechnology, P.O. Box 217, 7500 AEEnschede, The Netherlands
- International
Institute for Infrastructural, Hydraulic
and Environmental Engineering—IHE, P.O. Box 3015, 2601 DADelft, The Netherlands
| | - Esra te Brinke
- Membrane
Science and Technology, University of Twente,
MESA+ Institute for Nanotechnology, P.O. Box 217, 7500 AEEnschede, The Netherlands
| | - Wiebe M. de Vos
- Membrane
Science and Technology, University of Twente,
MESA+ Institute for Nanotechnology, P.O. Box 217, 7500 AEEnschede, The Netherlands
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Stimuli-responsive polyelectrolyte multilayer films and microcapsules. Adv Colloid Interface Sci 2022; 310:102773. [DOI: 10.1016/j.cis.2022.102773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 08/20/2022] [Accepted: 09/05/2022] [Indexed: 12/28/2022]
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3
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Sagawa T, Sakakibara M, Iijima K, Yataka Y, Hashizume M. Preparation and physical properties of free-standing films made of polyion complexes of carboxymethylated hyaluronic acid and chitosan. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zhang M, Shao S, Yue H, Wang X, Zhang W, Chen F, Zheng L, Xing J, Qin Y. High Stability Au NPs: From Design to Application in Nanomedicine. Int J Nanomedicine 2021; 16:6067-6094. [PMID: 34511906 PMCID: PMC8418318 DOI: 10.2147/ijn.s322900] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 07/29/2021] [Indexed: 12/16/2022] Open
Abstract
In recent years, Au-based nanomaterials are widely used in nanomedicine and biosensors due to their excellent physical and chemical properties. However, these applications require Au NPs to have excellent stability in different environments, such as extreme pH, high temperature, high concentration ions, and various biomatrix. To meet the requirement of multiple applications, many synthetic substances and natural products are used to prepare highly stable Au NPs. Because of this, we aim at offering an update comprehensive summary of preparation high stability Au NPs. In addition, we discuss its application in nanomedicine. The contents of this review are based on a balanced combination of our studies and selected research studies done by worldwide academic groups. First, we address some critical methods for preparing highly stable Au NPs using polymers, including heterocyclic substances, polyethylene glycols, amines, and thiol, then pay attention to natural product progress Au NPs. Then, we sum up the stability of various Au NPs in different stored times, ions solution, pH, temperature, and biomatrix. Finally, the application of Au NPs in nanomedicine, such as drug delivery, bioimaging, photothermal therapy (PTT), clinical diagnosis, nanozyme, and radiotherapy (RT), was addressed concentratedly.
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Affiliation(s)
- Minwei Zhang
- College of Life Science & Technology, Xinjiang University, Urumqi, 830046, People’s Republic of China
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, 830046, People’s Republic of China
| | - Shuxuan Shao
- College of Life Science & Technology, Xinjiang University, Urumqi, 830046, People’s Republic of China
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, 830046, People’s Republic of China
| | - Haitao Yue
- College of Life Science & Technology, Xinjiang University, Urumqi, 830046, People’s Republic of China
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, 830046, People’s Republic of China
| | - Xin Wang
- The First Hospital of Jilin University, Changchun, 130061, People’s Republic of China
| | - Wenrui Zhang
- College of Life Science & Technology, Xinjiang University, Urumqi, 830046, People’s Republic of China
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, 830046, People’s Republic of China
| | - Fei Chen
- College of Life Science & Technology, Xinjiang University, Urumqi, 830046, People’s Republic of China
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, 830046, People’s Republic of China
| | - Li Zheng
- College of Life Science & Technology, Xinjiang University, Urumqi, 830046, People’s Republic of China
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, 830046, People’s Republic of China
| | - Jun Xing
- College of Life Science & Technology, Xinjiang University, Urumqi, 830046, People’s Republic of China
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, 830046, People’s Republic of China
| | - Yanan Qin
- College of Life Science & Technology, Xinjiang University, Urumqi, 830046, People’s Republic of China
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, 830046, People’s Republic of China
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Bacterial Adhesion Capacity of Uropathogenic Escherichia coli to Polyelectrolyte Multilayer Coated Urinary Catheter Surface. COATINGS 2021. [DOI: 10.3390/coatings11060630] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The application of catheters to the urinary tract is associated with nosocomial infections. Such infections are one of the most common types of infections in hospitals and health care facilities and can lead to numerous medical complications. Therefore, the understanding of the properties of urinary catheter surfaces and their potential modifications are crucial in order to reduce bacterial adhesion and subsequent biofilm formation. In our study, we consider standard polyvinyl chloride (PVC) catheter surfaces and compare their properties with the properties of the same surfaces coated with poly(diallyldimethylammonium chloride)/poly(sodium 4-styrenesulfonate) (PDADMA/PSS) polyelectrolyte multilayers. Uncoated and coated surfaces were characterized by means of roughness, hydrophobicity, and zeta potential measurements. Finally, bacterial adhesion extent of uropathogenic Escherichia coli on bare and polyelectrolyte multilayer coated surfaces was measured. The obtained results show that on non-treated surfaces, biofilm is formed which was not the case for multilayer coated surfaces. The PSS-terminated multilayer shows the lowest bacterial adhesion and could be helpful in prevention of biofilm formation. The analysis of the properties of the uncoated and coated surfaces reveals that the most significant difference is related to the charge (i.e., zeta potential) of the examined surfaces, while roughness and hydrophobicity of the examined surfaces are similar. Therefore, it could be concluded that the surface charge plays the crucial role in the bacterial adhesion on uncoated and coated PVC catheter surfaces.
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Yu D, Chen Y, Ahrens CC, Wang Y, Ding Z, Lim H, Fell C, Rumbaugh KP, Wu J, Li W. Direct monitoring of protease activity using an integrated microchip coated with multilayered fluorogenic nanofilms. Analyst 2021; 145:8050-8058. [PMID: 33073791 DOI: 10.1039/d0an01294g] [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
Proteases play an essential role in the four sequential but overlapping phases of wound healing: hemostasis, inflammation, proliferation, and remodeling. In chronic wounds, excessive protease secretion damages the newly formed extracellular matrix, thereby delaying or preventing the normal healing process. Peptide-based fluorogenic sensors provide a visual platform to sense and analyze protease activity through changes in the fluorescence intensity. Here, we have developed an integrated microfluidic chip coated with multilayered fluorogenic nanofilms that can directly monitor protease activity. Fluorogenic protease sensors were chemically conjugated to polymer films coated on the surface of parallel microfluidic channels. Capillary flow layer-by-layer (CF-LbL) was used for film assembly and combined with subsequent sensor modification to establish a novel platform sensing technology. The benefits of our platform include facile fabrication and processing, controllable film nanostructure, small sample volume, and high sensitivity. We observed increased fluorescence of the LbL nanofilms when they were exposed to model recombinant proteases, confirming their responsiveness to protease activity. Increases in the nanofilms' fluorescence intensity were also observed during incubation with liquid extracted from murine infected wounds, demonstrating the potential of these films to provide real-time, in situ information about protease activity levels.
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Affiliation(s)
- Dan Yu
- Department of Critical Care Medicine, People's Hospital of Zhengzhou University (Henan Provincial People's Hospital), Zhengzhou, 450003, China
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Kumari S, Tiyyagura HR, Pottathara YB, Sadasivuni KK, Ponnamma D, Douglas TEL, Skirtach AG, Mohan MK. Surface functionalization of chitosan as a coating material for orthopaedic applications: A comprehensive review. Carbohydr Polym 2020; 255:117487. [PMID: 33436247 DOI: 10.1016/j.carbpol.2020.117487] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 11/01/2020] [Accepted: 12/02/2020] [Indexed: 02/07/2023]
Abstract
Metallic implants have dominated the biomedical implant industries for the past century for load-bearing applications, while the polymeric implants have shown great promise for tissue engineering applications. The surface properties of such implants are critical as the interaction of implant surfaces, and the body tissues may lead to unfavourable reactions. Desired implant properties are biocompatibility, corrosion resistance, and antibacterial activity. A polymer coating is an efficient and economical way to produce such surfaces. A lot of research has been carried out on chitosan (CS)-modified metallic and polymer scaffolds in the last decade. Different methods such as electrophoretic deposition, sol-gel methods, dip coating and spin coating, electrospinning, etc. have been utilized to produce CS coatings. However, a systematic review of chitosan coatings on scaffolds focussing on widely employed techniques is lacking. This review surveys literature concerning the current status of orthopaedic applications of CS for the purpose of coatings. In this review, the various preparation methods of coating, and the role of the surface functionalities in determining the efficiency of coatings are discussed. Effect of nanoparticle additions on the polymeric interfaces and in regulating the properties of surface coatings are also investigated in detail.
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Affiliation(s)
- Suman Kumari
- Department of Metallurgical and Materials Engineering, National Institute of Technology, Warangal, Telangana, 506004, India; Department of Biotechnology, Coupure Links 653, 9000 Gent, Belgium
| | - Hanuma Reddy Tiyyagura
- Alterno Labs d.o.o, Brnčičeva ulica 29, 1231 Ljubljana, Slovenia; Faculty of Mechanical Engineering, University of Maribor, Smetanova Ulica 17, Maribor SI-2000, Slovenia.
| | - Yasir Beeran Pottathara
- Faculty of Mechanical Engineering, University of Maribor, Smetanova Ulica 17, Maribor SI-2000, Slovenia
| | | | | | | | - Andre G Skirtach
- Department of Biotechnology, Coupure Links 653, 9000 Gent, Belgium
| | - M K Mohan
- Department of Metallurgical and Materials Engineering, National Institute of Technology, Warangal, Telangana, 506004, India.
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Sharma V, Sundaramurthy A. Multilayer capsules made of weak polyelectrolytes: a review on the preparation, functionalization and applications in drug delivery. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2020; 11:508-532. [PMID: 32274289 PMCID: PMC7113543 DOI: 10.3762/bjnano.11.41] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 02/25/2020] [Indexed: 06/11/2023]
Abstract
Multilayer capsules have been of great interest for scientists and medical communities in multidisciplinary fields of research, such as drug delivery, sensing, biomedicine, theranostics and gene therapy. The most essential attributes of a drug delivery system are considered to be multi-functionality and stimuli responsiveness against a range of external and internal stimuli. Apart from the highly explored strong polyelectrolytes, weak polyelectrolytes offer great versatility with a highly controllable architecture, unique stimuli responsiveness and easy tuning of the properties for intracellular delivery of cargo. This review describes the progress in the preparation, functionalization and applications of capsules made of weak polyelectrolytes or their combination with biopolymers. The selection of a sacrificial template for capsule formation, the driving forces involved, the encapsulation of a variety of cargo and release based on different internal and external stimuli have also been addressed. We describe recent perspectives and obstacles of weak polyelectrolyte/biopolymer systems in applications such as therapeutics, biosensing, bioimaging, bioreactors, vaccination, tissue engineering and gene delivery. This review gives an emerging outlook on the advantages and unique responsiveness of weak polyelectrolyte based systems that can enable their widespread use in potential applications.
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Affiliation(s)
- Varsha Sharma
- Department of Biomedical Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603203, India
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603203, India
| | - Anandhakumar Sundaramurthy
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603203, India
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603203, India
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Yataka Y, Suzuki A, Iijima K, Hashizume M. Enhancement of the mechanical properties of polysaccharide composite films utilizing cellulose nanofibers. Polym J 2020. [DOI: 10.1038/s41428-020-0311-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Mathivanan N, Paramasivam G, Vergaelen M, Rajendran J, Hoogenboom R, Sundaramurthy A. Hydrogen-Bonded Multilayer Thin Films and Capsules Based on Poly(2- n-propyl-2-oxazoline) and Tannic Acid: Investigation on Intermolecular Forces, Stability, and Permeability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:14712-14724. [PMID: 31622110 DOI: 10.1021/acs.langmuir.9b02938] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
In recent years, hydrogen-bonded multilayer thin films and capsules based on neutral and nontoxic building blocks have been receiving interest for the design of stimuli-responsive drug delivery systems and for the preparation of thin-film coatings. Capsule systems made of tannic acid (TA), a natural polyphenol, as a hydrogen bonding donor and poly(2-n-propyl-2-oxazoline) (PnPropOx), a polymer with lower critical solution temperature around 25 °C, as a hydrogen bonding acceptor are advantageous over other conventional hydrogen-bonded systems because of their high stability in physiological pH range, biocompatibility, good renal clearance, stealth behavior, and stimuli responsiveness for temperature and pH. In this work, investigations on the interactive forces in TA/PnPropOx capsule formation, film thickness, stability, and permeability are reported. The multilayer thin films were assembled on quartz substrates, and the layer-by-layer film growth was investigated by UV-vis spectroscopy, atomic force microscopy, and profilometry. Hollow capsules were fabricated by sequential coating of TA and PnPropOx onto CaCO3 colloidal particles, followed by template dissolution with a 0.2 M ethylenediaminetetraacetic acid solution. The obtained capsules and multilayer thin films were found to be stable over a wide pH range of 2-9. It is found that both hydrogen bonding and hydrophobic interactions are responsible for the enhanced stability of the capsules at higher pH range. Swelling followed by dissolution of the capsules was observed at a pH value lower than 2, while the capsules undergo shrinking at a pH value higher than 8 and finally transform into a particle-like morphology before dissolution. The TA/PnPropOx capsules reported here could be used as a temperature-responsive drug delivery system in controlled drug delivery applications.
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Affiliation(s)
| | | | - Maarten Vergaelen
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry , Ghent University , Krijgslaan 281 S4 , B-9000 Ghent , Belgium
| | | | - Richard Hoogenboom
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry , Ghent University , Krijgslaan 281 S4 , B-9000 Ghent , Belgium
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Novoselova MV, Voronin DV, Abakumova TO, Demina PA, Petrov AV, Petrov VV, Zatsepin TS, Sukhorukov GB, Gorin DA. Focused ultrasound-mediated fluorescence of composite microcapsules loaded with magnetite nanoparticles: In vitro and in vivo study. Colloids Surf B Biointerfaces 2019; 181:680-687. [DOI: 10.1016/j.colsurfb.2019.06.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 06/11/2019] [Accepted: 06/12/2019] [Indexed: 01/02/2023]
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Mathew ML, Gopalakrishnan A, Aravindakumar CT, Aravind UK. Low - cost multilayered green fiber for the treatment of textile industry waste water. JOURNAL OF HAZARDOUS MATERIALS 2019; 365:297-305. [PMID: 30447637 DOI: 10.1016/j.jhazmat.2018.11.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 10/22/2018] [Accepted: 11/05/2018] [Indexed: 05/27/2023]
Abstract
Layer by layer (LbL) assembly can be regarded as an emerging technology for the separation of organic micro-pollutants from water. Direct assembly of polyelectrolytes (PEs) under LbL mode on natural support material is rare. Here we report the integration of LbL to one of the most resourceful support materials that might have an enduring impact on water treatment in color industry. A low-cost adsorbent is developed from chitosan (CHI) and polyacrylic acid (PAA) through LbL deposition on coir fiber (CF) by alternate exposure to their aqueous solutions. Their layer dependent formation is characterized by spectroscopic and microscopic techniques. CHI/PAA multilayer coated coir fiber or simply, layered coir fiber (LCF) showed high loading of cationic and anionic dyes both at acidic and alkaline loading pH. The loading was between 70% and 99% at the acidic pH 3 which is attributed to the binding between LCF and dye molecules by electrostatic and hydrophobic forces. The performance of LCF in presence of NaCl, Na2SO4 and sodium dodecyl sulfate (SDS) in dye solution is discussed. Textile industrial waste water showed significant reduction in dye (81%) content along with COD (84%) and TDS.
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Affiliation(s)
- Mary Lidiya Mathew
- Advanced Centre of Environmental Studies and Sustainable Development, Mahatma Gandhi University, P.D. Hills P.O., 686560, Kottayam, India
| | - Akhil Gopalakrishnan
- Advanced Centre of Environmental Studies and Sustainable Development, Mahatma Gandhi University, P.D. Hills P.O., 686560, Kottayam, India
| | - Charuvila T Aravindakumar
- Inter University Instrumentation Centre, Mahatma Gandhi University, P.D. Hills P.O., 686560, Kottayam, India; School of Environmental Sciences, Mahatma Gandhi University, P.D. Hills P.O., 686560, Kottayam, India
| | - Usha K Aravind
- Advanced Centre of Environmental Studies and Sustainable Development, Mahatma Gandhi University, P.D. Hills P.O., 686560, Kottayam, India; Centre for Environment Education and Technology (CEET), Kiranam, Arpookara East P.O., 686008, Kottayam, Kerala, India.
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Heyns IM, Pfukwa R, Bertossi L, Ball LE, Kelland MA, Klumperman B. Thermoresponsive behavior of poly(3-methylene-2-pyrrolidone) derivatives. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.10.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Ryzhkov NV, Mamchik NA, Skorb EV. Electrochemical triggering of lipid bilayer lift-off oscillation at the electrode interface. J R Soc Interface 2019; 16:20180626. [PMID: 30958160 PMCID: PMC6364645 DOI: 10.1098/rsif.2018.0626] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 12/13/2018] [Indexed: 12/12/2022] Open
Abstract
In situ studies of transmembrane channels often require a model bioinspired artificial lipid bilayer (LB) decoupled from its underlaying support. Obtaining free-standing lipid membranes is still a challenge. In this study, we suggest an electrochemical approach for LB separation from its solid support via hydroquinone oxidation. Layer-by-layer deposition of polyethylenimine (PEI) and polystyrene sulfonate (PSS) on the gold electrode was performed to obtain a polymeric nanocushion of [PEI/PSS]3/PEI. The LB was deposited on top of an underlaying polymer support from the dispersion of small unilamellar vesicles due to their electrostatic attraction to the polymer support. Since lipid zwitterions demonstrate pH-dependent charge shifting, the separation distance between the polyelectrolyte support and LB can be adjusted by changing the environmental pH, leading to lipid molecules recharge. The proton generation associated with hydroquinone oxidation was studied using scanning vibrating electrode and scanning ion-selective electrode techniques. Electrochemical impedance spectroscopy is suggested to be a powerful instrument for the in situ observation of processes associated with the LB-solid support interface. Electrochemical spectroscopy highlighted the reversible disappearance of the LB impact on impedance in acidic conditions set by dilute acid addition as well as by electrochemical proton release on the gold electrode due to hydroquinone oxidation.
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Affiliation(s)
- Nikolay V. Ryzhkov
- ITMO University, 9 Lomonosova Street, St Petersburg 191002, Russian Federation
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O’Neal JT, Wilcox KG, Zhang Y, George IM, Lutkenhaus JL. Comparison of KBr and NaCl effects on the glass transition temperature of hydrated layer-by-layer assemblies. J Chem Phys 2018; 149:163317. [DOI: 10.1063/1.5037491] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Joshua T. O’Neal
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843-3122, USA
| | - Kathryn G. Wilcox
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122, USA
| | - Yanpu Zhang
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122, USA
| | - Ian M. George
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122, USA
| | - Jodie L. Lutkenhaus
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843-3122, USA
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122, USA
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Tan S, Saito K, Hearn MTW. Stimuli-responsive polymeric materials for separation of biomolecules. Curr Opin Biotechnol 2018; 53:209-223. [DOI: 10.1016/j.copbio.2018.02.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 02/12/2018] [Accepted: 02/12/2018] [Indexed: 10/17/2022]
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17
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Albright V, Xu M, Palanisamy A, Cheng J, Stack M, Zhang B, Jayaraman A, Sukhishvili SA, Wang H. Micelle-Coated, Hierarchically Structured Nanofibers with Dual-Release Capability for Accelerated Wound Healing and Infection Control. Adv Healthc Mater 2018; 7:e1800132. [PMID: 29683273 PMCID: PMC6347427 DOI: 10.1002/adhm.201800132] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 03/03/2018] [Indexed: 12/18/2022]
Abstract
Tailoring nanofibrous matrices-a material with much promise for wound healing applications-to simultaneously mitigate bacterial colonization and stimulate wound closure of infected wounds is highly desirable. To that end, a dual-releasing, multiscale system of biodegradable electrospun nanofibers coated with biocompatible micellar nanocarriers is reported. For wound healing, transforming growth factor-β1 is incorporated into polycaprolactone/collagen (PCL/Coll) nanofibers via electrospinning and the myofibroblastic differentiation of human dermal fibroblasts is locally stimulated. To prevent infection, biocompatible nanocarriers of polypeptide-based block copolymer micelles are deposited onto the surfaces of PCL/Coll nanofibers using tannic acid as a binding partner. Micelle-modified fibrous scaffolds are favorable for wound healing, not only supporting the attachment and spreading of fibroblasts comparable to those on noncoated nanofibers, but also significantly enhancing fibroblast migration. Micellar coatings can be loaded with gentamicin or clindamycin and exhibit antibacterial activity as measured by Petrifilm and zone of inhibition assays as well as time-dependent reduction of cellular counts of Staphylococcus aureus cultures. Moreover, delivery time of antibiotic dosage is tunable through the application of a novel modular approach. Altogether, this system holds great promise as an infection-mitigating, cell-stimulating, biodegradable skin graft for wound management and tissue engineering.
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Affiliation(s)
- Victoria Albright
- Department of Materials Science and Engineering, Texas A&M University, 575 Ross Street, College Station, TX 77843, USA
| | - Meng Xu
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, 1 Castle Point on the Hudson, Hoboken, NJ 07030, USA
| | - Anbazhagan Palanisamy
- Department of Materials Science and Engineering, Texas A&M University, 575 Ross Street, College Station, TX 77843, USA
| | - Jun Cheng
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, 1 Castle Point on the Hudson, Hoboken, NJ 07030, USA
| | - Mary Stack
- Department of Biomedical Engineering, Stevens Institute of Technology, 1 Castle Point on the Hudson, Hoboken, NJ 07030, USA
| | - Beilu Zhang
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, 1 Castle Point on the Hudson, Hoboken, NJ 07030, USA
| | - Arul Jayaraman
- Department of Chemical Engineering, Department of Biomedical Engineering, Texas A&M University
| | - Svetlana A. Sukhishvili
- Department of Materials Science and Engineering, Texas A&M University, 575 Ross Street, College Station, TX 77843, USA,
| | - Hongjun Wang
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, 1 Castle Point on the Hudson, Hoboken, NJ 07030, USA,
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18
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Belbekhouche S, Charaabi S, Picton L, Le Cerf D, Carbonnier B. Glucose-sensitive polyelectrolyte microcapsules based on (alginate/chitosan) pair. Carbohydr Polym 2018; 184:144-153. [DOI: 10.1016/j.carbpol.2017.12.054] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 12/18/2017] [Accepted: 12/19/2017] [Indexed: 01/25/2023]
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19
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Izumrudov VA, Mussabayeva BK, Murzagulova KB. Polyelectrolyte multilayers: preparation and applications. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4767] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Li C, Gu Y, Zacharia NS. Tuning Wet Adhesion of Weak Polyelectrolyte Multilayers. ACS APPLIED MATERIALS & INTERFACES 2018; 10:7401-7412. [PMID: 29389109 DOI: 10.1021/acsami.7b18910] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Weak polyelectrolyte multilayers (PEMs) assembled by the layer-by-layer method are known to become tacky upon contact with water and behave as a viscoelastic fluid, but this wet adhesive property and how it can be modified by external stimuli has not yet been fully explored. We present here a study on the wet adhesive performance of PEMs consisting of branched poly(ethylene imine) and poly(acrylic acid) under controlled conditions (e.g., pH, type of salt, and ionic strength) using a 90° peel test. The multilayers demonstrate stick-slip behavior and fail cohesively in nearly all cases. The peel force is the highest at neutral pH, and it decreases in both acidic/basic environments because of inhibited polyelectrolyte mobility. The addition of salts with various metal ions generally reduces the peel force, and this effect tracks with the ionic strength. When transition metal ions are used, their ability to form coordination bonds increases the peel force, with two exceptions (Cu2+ and Zn2+). With a transition metal ion such as Fe3+, the peel force first increases as a function of the concentration and then eventually decreases. The peel force increases proportionally to the peel rate. The films are also characterized via zeta potential (when assembled onto colloidal particles) and shear rheometry. This work provides insight into both the wet adhesive properties of PEMs and the interactions between PEMs and metal ions.
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Affiliation(s)
- Chao Li
- Department of Polymer Engineering, University of Akron , Akron, Ohio 44325, United States
| | - Yuanqing Gu
- Department of Polymer Engineering, University of Akron , Akron, Ohio 44325, United States
| | - Nicole S Zacharia
- Department of Polymer Engineering, University of Akron , Akron, Ohio 44325, United States
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21
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Madaboosi N, Uhlig K, Schmidt S, Vikulina AS, Möhwald H, Duschl C, Volodkin D. A “Cell-Friendly” Window for the Interaction of Cells with Hyaluronic Acid/Poly-l
-Lysine Multilayers. Macromol Biosci 2017; 18. [DOI: 10.1002/mabi.201700319] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 10/27/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Narayanan Madaboosi
- Fraunhofer Institute for Cell Therapy and Immunology; Branch Bioanalytics and Bioprocesses (Fraunhofer IZI-BB); Department Cellular Biotechnology & Biochips; Am Mühlenberg 13 14476 Potsdam-Golm Germany
- Max Planck Institute for Colloids and Interfaces; Am Mühlenberg 1 14476 Potsdam-Golm Germany
| | - Katja Uhlig
- Fraunhofer Institute for Cell Therapy and Immunology; Branch Bioanalytics and Bioprocesses (Fraunhofer IZI-BB); Department Cellular Biotechnology & Biochips; Am Mühlenberg 13 14476 Potsdam-Golm Germany
| | - Stephan Schmidt
- Fraunhofer Institute for Cell Therapy and Immunology; Branch Bioanalytics and Bioprocesses (Fraunhofer IZI-BB); Department Cellular Biotechnology & Biochips; Am Mühlenberg 13 14476 Potsdam-Golm Germany
- Heinrich-Heine-Universität Düsseldorf; Institut für Organische und Makromolekulare Chemie; Universiätsstr.1 40225 Düsseldorf Germany
| | - Anna S. Vikulina
- School of Science and Technology; Nottingham Trent University; Clifton Lane Nottingham NG11 8NS UK
| | - Helmuth Möhwald
- Max Planck Institute for Colloids and Interfaces; Am Mühlenberg 1 14476 Potsdam-Golm Germany
| | - Claus Duschl
- Fraunhofer Institute for Cell Therapy and Immunology; Branch Bioanalytics and Bioprocesses (Fraunhofer IZI-BB); Department Cellular Biotechnology & Biochips; Am Mühlenberg 13 14476 Potsdam-Golm Germany
| | - Dmitry Volodkin
- Fraunhofer Institute for Cell Therapy and Immunology; Branch Bioanalytics and Bioprocesses (Fraunhofer IZI-BB); Department Cellular Biotechnology & Biochips; Am Mühlenberg 13 14476 Potsdam-Golm Germany
- School of Science and Technology; Nottingham Trent University; Clifton Lane Nottingham NG11 8NS UK
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22
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Feeney M, Hu X, Srinivasan R, Van N, Hunter M, Georgakoudi I, Thomas SW. UV and NIR-Responsive Layer-by-Layer Films Containing 6-Bromo-7-hydroxycoumarin Photolabile Groups. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10877-10885. [PMID: 28967754 PMCID: PMC5647567 DOI: 10.1021/acs.langmuir.7b01469] [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: 04/30/2017] [Revised: 09/11/2017] [Indexed: 06/07/2023]
Abstract
This paper describes polyelectrolyte multilayer films prepared by the layer-by-layer (LbL) technique capable of undergoing dissolution upon exposure to either ultraviolet or near-infrared light. Film dissolution is driven by photochemical deprotection of a random methacrylic copolymer with two types of side chains: (i) 6-bromo-7-hydroxycoumarinyl esters, photocleavable groups that are known to have substantial two-photon photolysis cross sections, and (ii) cationic residues from the commercially available monomer N,N-dimethylaminoethyl methacrylate (DMAEMA). In addition, the dependence of stability of both unirradiated and irradiated films on pH provides experimental evidence for the necessity of disrupting both ion-pairing and hydrophobic interactions between polyelectrolytes to realize film dissolution. This work therefore provides both new fundamental insight regarding photolabile LbL films and expands their applied capabilities to nonlinear photochemical processes.
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Affiliation(s)
- Matthew
J. Feeney
- Department
of Chemistry, 62 Talbot
Avenue, Tufts University, Medford, Massachusetts 02155, United States
| | - Xiaoran Hu
- Department
of Chemistry, 62 Talbot
Avenue, Tufts University, Medford, Massachusetts 02155, United States
| | - Rati Srinivasan
- Department
of Chemistry, 62 Talbot
Avenue, Tufts University, Medford, Massachusetts 02155, United States
| | - Nhi Van
- Department
of Chemistry, 62 Talbot
Avenue, Tufts University, Medford, Massachusetts 02155, United States
| | - Martin Hunter
- Department
of Biomedical Engineering, 4 Colby Street, Tufts
University, Medford, Massachusetts 02155, United States
| | - Irene Georgakoudi
- Department
of Biomedical Engineering, 4 Colby Street, Tufts
University, Medford, Massachusetts 02155, United States
| | - Samuel W. Thomas
- Department
of Chemistry, 62 Talbot
Avenue, Tufts University, Medford, Massachusetts 02155, United States
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23
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Kim S, Geryak RD, Zhang S, Ma R, Calabrese R, Kaplan DL, Tsukruk VV. Interfacial Shear Strength and Adhesive Behavior of Silk Ionomer Surfaces. Biomacromolecules 2017; 18:2876-2886. [DOI: 10.1021/acs.biomac.7b00790] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Sunghan Kim
- School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Ren D. Geryak
- School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Shuaidi Zhang
- School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Ruilong Ma
- School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Rossella Calabrese
- Department
of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - David L. Kaplan
- Department
of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Vladimir. V. Tsukruk
- School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
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24
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Ibragimova AR, Mirgorodskaya AB, Vasilieva EA, Khairutdinova EI, Meleshko TK, Ivanov IV, Yakimansky AV, Nizameev IR, Kadirov MK, Zakharova LY. Polyelectrolyte nanocapsules with controlled properties fabricated by layer-by-layer deposition of polyethyleneimine and graft-copolyimide with polymethacrylic acid side chains. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.11.065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Omi FR, Choudhury MR, Anwar N, Bakr AR, Rahaman MS. Highly Conductive Ultrafiltration Membrane via Vacuum Filtration Assisted Layer-by-Layer Deposition of Functionalized Carbon Nanotubes. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00847] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Farah R. Omi
- Department of Building Civil
and Environmental Engineering, Concordia University, 1455 de Maisonneuve Blvd. West, Montreal H3G 1M8, Quebec, Canada
| | - Mahbuboor R. Choudhury
- Department of Building Civil
and Environmental Engineering, Concordia University, 1455 de Maisonneuve Blvd. West, Montreal H3G 1M8, Quebec, Canada
| | - Nawrin Anwar
- Department of Building Civil
and Environmental Engineering, Concordia University, 1455 de Maisonneuve Blvd. West, Montreal H3G 1M8, Quebec, Canada
| | - Ahmed R. Bakr
- Department of Building Civil
and Environmental Engineering, Concordia University, 1455 de Maisonneuve Blvd. West, Montreal H3G 1M8, Quebec, Canada
| | - Md. Saifur Rahaman
- Department of Building Civil
and Environmental Engineering, Concordia University, 1455 de Maisonneuve Blvd. West, Montreal H3G 1M8, Quebec, Canada
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26
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Das BP, Tsianou M. From polyelectrolyte complexes to polyelectrolyte multilayers: Electrostatic assembly, nanostructure, dynamics, and functional properties. Adv Colloid Interface Sci 2017; 244:71-89. [PMID: 28499602 DOI: 10.1016/j.cis.2016.12.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 12/09/2016] [Accepted: 12/10/2016] [Indexed: 12/21/2022]
Abstract
Polyelectrolyte complexes (PECs) are three-dimensional macromolecular structures formed by association of oppositely charged polyelectrolytes in solution. Polyelectrolyte multilayers (PEMs) can be considered a special case of PECs prepared by layer-by-layer (LbL) assembly that involves sequential deposition of molecular-thick polyelectrolyte layers with nanoscale control over the size, shape, composition and internal organization. Although many functional PEMs with novel physical and chemical characteristics have been developed, the current practical applications of PEMs are limited to those that require only a few bilayers and are relatively easy to prepare. The viability of such engineered materials can be realized only after overcoming the scientific and engineering challenges of understanding the kinetics and transport phenomena involved in the multilayer growth and the factors governing their final structure, composition, and response to external stimuli. There is a great need to model PEMs and to connect PEM behavior with the characteristics of the PEC counterparts to allow for prediction of performance and better design of multilayered materials. This review focuses on the relationship between PEMs and PECs. The constitutive interactions, the thermodynamics and kinetics of polyelectrolyte complexation and PEM formation, PEC phase behavior, PEM growth, the internal structure and stability in PEMs and PECs, and their response to external stimuli are presented. Knowledge of such interactions and behavior can guide rapid fabrication of PEMs and can aid their applications as nanocomposites, coatings, nano-sized reactors, capsules, drug delivery systems, and in electrochemical and sensing devices. The challenges and opportunities in future research directions are also discussed.
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Affiliation(s)
- Biswa P Das
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260-4200, United States
| | - Marina Tsianou
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260-4200, United States.
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27
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Zayas-Gonzalez YM, Ortiz BJ, Lynn DM. Layer-by-Layer Assembly of Amine-Reactive Multilayers Using an Azlactone-Functionalized Polymer and Small-Molecule Diamine Linkers. Biomacromolecules 2017; 18:1499-1508. [PMID: 28332831 PMCID: PMC5462121 DOI: 10.1021/acs.biomac.7b00043] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the reactive layer-by-layer assembly of amine-reactive polymer multilayers using an azlactone-functionalized polymer and small-molecule diamine linkers. This approach yields cross-linked polymer/linker-type films that can be further functionalized, after fabrication, by treatment with functional primary amines, and provides opportunities to incorporate other useful functionality that can be difficult to introduce using other polyamine building blocks. Films fabricated using poly(2-vinyl-4,4-dimethylazlactone) (PVDMA) and three model nondegradable aliphatic diamine linkers yielded reactive thin films that were stable upon incubation in physiologically relevant media. By contrast, films fabricated using PVDMA and varying amounts of the model disulfide-containing diamine linker cystamine were stable in normal physiological media, but were unstable and eroded rapidly upon exposure to chemical reducing agents. We demonstrate that this approach can be used to fabricate functionalized polymer microcapsules that degrade in reducing environments, and that rates of erosion, extents of capsule swelling, and capsule degradation can be tuned by control over the relative concentration of cystamine linker used during fabrication. The polymer/linker approach used here expands the range of properties and functions that can be designed into reactive PVDMA-based coatings, including functionality that can degrade, erode, and undergo triggered destruction in aqueous environments. We therefore anticipate that these approaches will be useful for the functionalization, patterning, and customization of coatings, membranes, capsules, and interfaces of potential utility in biotechnical or biomedical contexts and other areas where degradation and transience are desired. The proof of concept strategies reported here are likely to be general, and should prove useful for the design of amine-reactive coatings containing other functional structures by judicious control of the structures of the linkers used during assembly.
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Affiliation(s)
- Yashira M Zayas-Gonzalez
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Benjamín J Ortiz
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - David M Lynn
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
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28
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Ramos Ferrer P, Mace A, Thomas SN, Jeon JW. Nanostructured porous graphene and its composites for energy storage applications. NANO CONVERGENCE 2017; 4:29. [PMID: 29152447 PMCID: PMC5661008 DOI: 10.1186/s40580-017-0123-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 10/14/2017] [Indexed: 05/10/2023]
Abstract
Graphene, 2D atomic-layer of sp2 carbon, has attracted a great deal of interest for use in solar cells, LEDs, electronic skin, touchscreens, energy storage devices, and microelectronics. This is due to excellent properties of graphene, such as a high theoretical surface area, electrical conductivity, and mechanical strength. The fundamental structure of graphene is also manipulatable, allowing for the formation of an even more extraordinary material, porous graphene. Porous graphene structures can be categorized as microporous, mesoporous, or macroporous depending on the pore size, all with their own unique advantages. These characteristics of graphene, which are further explained in this paper, may be the key to greatly improving a wide range of applications in energy storage systems.
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Affiliation(s)
- Pablo Ramos Ferrer
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487 USA
| | - Annsley Mace
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487 USA
| | - Samantha N. Thomas
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487 USA
| | - Ju-Won Jeon
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487 USA
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29
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Yang XY, Chen LH, Li Y, Rooke JC, Sanchez C, Su BL. Hierarchically porous materials: synthesis strategies and structure design. Chem Soc Rev 2017; 46:481-558. [DOI: 10.1039/c6cs00829a] [Citation(s) in RCA: 839] [Impact Index Per Article: 119.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This review addresses recent advances in synthesis strategies of hierarchically porous materials and their structural design from micro-, meso- to macro-length scale.
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Affiliation(s)
- Xiao-Yu Yang
- State Key Laboratory Advanced Technology for Materials Synthesis and Processing
- School of Materials Science and Engineering
- Wuhan University of Technology
- Wuhan
- China
| | - Li-Hua Chen
- State Key Laboratory Advanced Technology for Materials Synthesis and Processing
- School of Materials Science and Engineering
- Wuhan University of Technology
- Wuhan
- China
| | - Yu Li
- State Key Laboratory Advanced Technology for Materials Synthesis and Processing
- School of Materials Science and Engineering
- Wuhan University of Technology
- Wuhan
- China
| | - Joanna Claire Rooke
- Laboratory of Inorganic Materials Chemistry (CMI)
- University of Namur
- B-5000 Namur
- Belgium
| | - Clément Sanchez
- Chimie de la Matiere Condensee de Paris
- UniversitePierre et Marie Curie (Paris VI)
- Collège de France
- France
| | - Bao-Lian Su
- State Key Laboratory Advanced Technology for Materials Synthesis and Processing
- School of Materials Science and Engineering
- Wuhan University of Technology
- Wuhan
- China
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30
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O’Neal JT, Bolen MJ, Dai EY, Lutkenhaus JL. Hydrogen-bonded polymer nanocomposites containing discrete layers of gold nanoparticles. J Colloid Interface Sci 2017; 485:260-268. [DOI: 10.1016/j.jcis.2016.09.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 09/19/2016] [Accepted: 09/20/2016] [Indexed: 01/23/2023]
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31
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Dong Z, Tang L, Ahrens CC, Ding Z, Cao V, Castleberry S, Yan J, Li W. A benchtop capillary flow layer-by-layer (CF-LbL) platform for rapid assembly and screening of biodegradable nanolayered films. LAB ON A CHIP 2016; 16:4601-4611. [PMID: 27785506 DOI: 10.1039/c6lc01065b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Capillary flow layer-by-layer (CF-LbL) is a microfluidic platform for high throughput preparation and screening of nanolayered polymer films. Using a simple benchtop version of CF-LbL, we systematically studied the effects of various flow conditions and channel geometries on the thickness and surface roughness of the resulting films. We also investigated the biocompatibility and degradation behaviors of a series of enzymatically-degradable films made from naturally derived polymers, i.e. either alginate or hyaluronic acid as the anionic species and poly-l-arginine as the positive species. Furthermore, using one optimized film formulation for coating on the inside walls of a microfluidic chip, we successfully demonstrated the ability of this film to capture and rapidly release cancer cells from whole blood. This simple platform is expected to be a powerful tool to increase the accessibility of the LbL film assembly to a broader scientific community.
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Affiliation(s)
- Ziye Dong
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA.
| | - Ling Tang
- Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Caroline C Ahrens
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA.
| | - Zhenya Ding
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA.
| | - Vi Cao
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA.
| | | | - Jiangtao Yan
- Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Wei Li
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA.
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32
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Qi X, Yang L, Zhu J, Hou Y, Yang M. Stiffer but More Healable Exponential Layered Assemblies with Boron Nitride Nanoplatelets. ACS NANO 2016; 10:9434-9445. [PMID: 27648668 DOI: 10.1021/acsnano.6b04482] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Self-healing ability and the elastic modulus of polymeric materials may seem conflicting because of their opposite dependence on chain mobility. Here, we show that boron nitride (BN) nanoplatelets can simultaneously enhance these seemingly contradictory properties in exponentially layer-by-layer-assembled nanocomposites as both surface coatings and free-standing films. On one hand, embedding hard BN nanoplatelets into a soft hydrogen bonding network can enhance the elastic modulus and ultimate strength through effective load transfer strengthened by the incorporation of interfacial covalent bonding; on the other hand, during a water-enabled self-healing process, these two-dimensional flakes induce an anisotropic diffusion, maintain the overall diffusion ability of polymers at low loadings, and can be "sealing" agents to retard the out-of-plane diffusion, thereby hampering polymer release into the solution. A detailed mechanism study supported by a theoretical model reveals the critical parameters for achieving a complete self-healing process. The insights gained from this work may be used for the design of high-performance smart materials based on other two-dimensional fillers.
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Affiliation(s)
- Xiaodong Qi
- Key Laboratory of Microsystems and Micronanostructures Manufacturing and ‡Center for Composite Materials and Structures, Harbin Institute of Technology , 2 Yikuang Street, Harbin 150080, China
| | - Lei Yang
- Key Laboratory of Microsystems and Micronanostructures Manufacturing and ‡Center for Composite Materials and Structures, Harbin Institute of Technology , 2 Yikuang Street, Harbin 150080, China
| | - Jiaqi Zhu
- Key Laboratory of Microsystems and Micronanostructures Manufacturing and ‡Center for Composite Materials and Structures, Harbin Institute of Technology , 2 Yikuang Street, Harbin 150080, China
| | - Ying Hou
- Key Laboratory of Microsystems and Micronanostructures Manufacturing and ‡Center for Composite Materials and Structures, Harbin Institute of Technology , 2 Yikuang Street, Harbin 150080, China
| | - Ming Yang
- Key Laboratory of Microsystems and Micronanostructures Manufacturing and ‡Center for Composite Materials and Structures, Harbin Institute of Technology , 2 Yikuang Street, Harbin 150080, China
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33
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Zhang H, Wang C, Zhu G, Zacharia NS. Self-Healing of Bulk Polyelectrolyte Complex Material as a Function of pH and Salt. ACS APPLIED MATERIALS & INTERFACES 2016; 8:26258-26265. [PMID: 27599096 DOI: 10.1021/acsami.6b06776] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Self-healing materials are an emerging class of modern materials gaining importance due to environmental and energy concerns. Materials based on the complexation of oppositely charged polyelectrolytes, usually in the form of coatings and films, have been shown to have water activated self-healing properties. In this work, the self-healing of bulk branched poly(ethylene imine) and poly(acrylic acid) (BPEI/PAA) complex is studied as a function of the aqueous solutions used to activate the self-healing. Specifically, exposure to different salt solutions and solutions of different pH was examined including sodium and copper ion containing solutions as well as acidic and basic solutions. By applying NaCl treatment, especially followed by exposure to DI water, the self-healing ability of the BPEI/PAA complex was enhanced. In contrast, after treated by CuCl2, the BPEI/PAA complex lost its self-healing ability, showing an ability to modulate the ability to self-heal as a function of external stimulus. In addition to improving the ability to self-heal using salt as compared to using DI water alone, acidic and basic solutions can also improve the ability to self-heal. The self-healing is caused by chain mobility at the cut interface of the polyelectrolyte complex material which is controlled by charge density along the polyelectrolyte backbone as well as ionic cross-link density, and correlation between this mobility to rheological behavior is made. Tensile testing and determination of fracture toughness were used to characterize self-healing.
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Affiliation(s)
- Huan Zhang
- Department of Polymer Engineering, University of Akron , Akron, Ohio 44325, United States
| | - Chao Wang
- Department of Polymer Engineering, University of Akron , Akron, Ohio 44325, United States
| | - Geyunjian Zhu
- Department of Polymer Engineering, University of Akron , Akron, Ohio 44325, United States
| | - Nicole S Zacharia
- Department of Polymer Engineering, University of Akron , Akron, Ohio 44325, United States
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34
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Zayas-Gonzalez YM, Lynn DM. Degradable Amine-Reactive Coatings Fabricated by the Covalent Layer-by-Layer Assembly of Poly(2-vinyl-4,4-dimethylazlactone) with Degradable Polyamine Building Blocks. Biomacromolecules 2016; 17:3067-75. [PMID: 27525718 DOI: 10.1021/acs.biomac.6b00975] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report the fabrication of reactive and degradable cross-linked polymer multilayers by the reactive/covalent layer-by-layer assembly of a non-degradable azlactone-functionalized polymer [poly(2-vinyl-4,4-dimethylazlactone), PVDMA] with hydrolytically or enzymatically degradable polyamine building blocks. Fabrication of multilayers using PVDMA and a hydrolytically degradable poly(β-amino ester) (PBAE) containing primary amine side chains yielded multilayers (∼100 nm thick) that degraded over ∼12 days in physiologically relevant media. Physicochemical characterization and studies on stable films fabricated using PVDMA and an analogous non-degradable poly(amidoamine) suggested that erosion occurred by chemical hydrolysis of backbone esters in the PBAE components of these assemblies. These degradable assemblies also contained residual amine-reactive azlactone functionality that could be used to impart new functionality to the coatings post-fabrication. Cross-linked multilayers fabricated using PVDMA and the enzymatically degradable polymer poly(l-lysine) were structurally stable for prolonged periods in physiological media, but degraded over ∼24 h when the enzyme trypsin was added. Past studies demonstrate that multilayers fabricated using PVDMA and non-degradable polyamines [e.g., poly(ethylenimine)] enable the design and patterning of useful nano/biointerfaces and other materials that are structurally stable in physiological media. The introduction of degradable functionality into PVDMA-based multilayers creates opportunities to exploit the reactivity of azlactone groups for the design of reactive materials and functional coatings that degrade or erode in environments that are relevant in biomedical, biotechnological, and environmental contexts. This "degradable building block" strategy should be general; we anticipate that this approach can also be extended to the design of amine-reactive multilayers that degrade upon exposure to specific chemical triggers, selective enzymes, or contact with cells by judicious design of the degradable polyamine building blocks used to fabricate the coatings.
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Affiliation(s)
- Yashira M Zayas-Gonzalez
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States , and
| | - David M Lynn
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States , and.,Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
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35
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Reid DK, Summers A, O’Neal J, Kavarthapu AV, Lutkenhaus JL. Swelling and Thermal Transitions of Polyelectrolyte Multilayers in the Presence of Divalent Ions. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01164] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Dariya K. Reid
- Artie McFerrin Department of Chemical Engineering and ‡Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Alexandra Summers
- Artie McFerrin Department of Chemical Engineering and ‡Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Josh O’Neal
- Artie McFerrin Department of Chemical Engineering and ‡Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Avanti V. Kavarthapu
- Artie McFerrin Department of Chemical Engineering and ‡Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Jodie L. Lutkenhaus
- Artie McFerrin Department of Chemical Engineering and ‡Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
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36
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Silva JM, Reis RL, Mano JF. Biomimetic Extracellular Environment Based on Natural Origin Polyelectrolyte Multilayers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:4308-42. [PMID: 27435905 DOI: 10.1002/smll.201601355] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/15/2016] [Indexed: 05/23/2023]
Abstract
Surface modification of biomaterials is a well-known approach to enable an adequate biointerface between the implant and the surrounding tissue, dictating the initial acceptance or rejection of the implantable device. Since its discovery in early 1990s layer-by-layer (LbL) approaches have become a popular and attractive technique to functionalize the biomaterials surface and also engineering various types of objects such as capsules, hollow tubes, and freestanding membranes in a controllable and versatile manner. Such versatility enables the incorporation of different nanostructured building blocks, including natural biopolymers, which appear as promising biomimetic multilayered systems due to their similarity to human tissues. In this review, the potential of natural origin polymer-based multilayers is highlighted in hopes of a better understanding of the mechanisms behind its use as building blocks of LbL assembly. A deep overview on the recent progresses achieved in the design, fabrication, and applications of natural origin multilayered films is provided. Such films may lead to novel biomimetic approaches for various biomedical applications, such as tissue engineering, regenerative medicine, implantable devices, cell-based biosensors, diagnostic systems, and basic cell biology.
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Affiliation(s)
- Joana M Silva
- 3Bs Research Group-Biomaterials Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark - Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory Braga/Guimarães, Portugal
| | - Rui L Reis
- 3Bs Research Group-Biomaterials Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark - Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory Braga/Guimarães, Portugal
| | - João F Mano
- 3Bs Research Group-Biomaterials Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark - Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory Braga/Guimarães, Portugal
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37
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Bian Q, Wang W, Han G, Chen Y, Wang S, Wang G. Photoswitched Cell Adhesion on Azobenzene-Containing Self-Assembled Films. Chemphyschem 2016; 17:2503-8. [PMID: 27146320 DOI: 10.1002/cphc.201600362] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Indexed: 11/09/2022]
Abstract
Stimuli-responsive surfaces that can regulate and control cell adhesion have attracted much attention for their great potential in diverse biomedical applications. Unlike for pH- and temperature-responsive surfaces, the process of photoswitching requires no additional input of chemicals or thermal energy. In this work, two different photoresponsive azobenzene films are synthesized by chemisorption and electrostatic layer-by-layer (LbL) assembly techniques. The LbL film exhibits a relatively loose packing of azobenzene chromophores compared with the chemisorbed film. The changes in trans/cis isomer ratio of the azobenzene moiety and the corresponding wettability of the LbL films are larger than those of the chemisorbed films under UV light irradiation. The tendency for cell adhesion on the LbL films decreases markedly after UV light irradiation, whereas adhesion on the chemisorbed films decreases only slightly, because the azobenzene chromophores stay densely packed. Interestingly, the tendency for cell adhesion can be considerably increased on rough substrates, the roughness being introduced by use of photolithography and inductively coupled plasma deep etching techniques. For the chemisorbed films on rough substrates, the amount of cells that adhere also changes slightly after UV light irradiation, whereas, the amount of cells that adhere to LbL films on rough substrates decreases significantly.
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Affiliation(s)
- Qing Bian
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Wenshuo Wang
- Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Guoxiang Han
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Yupeng Chen
- Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Shutao Wang
- Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
| | - Guojie Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
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38
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Salvi C, Lyu X, Peterson AM. Effect of Assembly pH on Polyelectrolyte Multilayer Surface Properties and BMP-2 Release. Biomacromolecules 2016; 17:1949-58. [PMID: 27186660 DOI: 10.1021/acs.biomac.5b01730] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The effect of solution pH during layer-by-layer assembly of polyelectrolyte multilayer (PEM) coatings on properties relevant to orthopedic implant success was investigated. Bone morphogenetic protein 2 (BMP-2), a potent osteoconductive growth factor, was adsorbed onto the surface of anodized titanium, and PEM coatings prepared from solutions of poly-l-histidine and poly(methacrylic acid) were built on top of the BMP-2. High levels of BMP-2 released over several months were achieved. Approximately 2 μg/cm(2) of BMP-2 were initially adsorbed on the anodized titanium and a pH-dependent release behavior was observed, with more stable coatings assembled at pH = 6-7. Three different diffusion regimes could be determined from the release profiles: an initial burst release, a sustained release regime, and a depletion regime. BMP-2 was shown to maintain bioactivity after release from a PEM and the presence of a PEM was shown to preserve BMP-2 structure. No visible change was observed in surface roughness as the assembly pH was varied, whereas the surface energy decreased for samples prepared at more basic pH. These results indicate that the initial BMP-2 layer affects PEM surface structure, but not the functional groups exposed on the surface.
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Affiliation(s)
- Claire Salvi
- Departments of †Chemical Engineering, ‡Mechanical Engineering, and §Biomedical Engineering, Worcester Polytechnic Institute , 100 Institute Road, Worcester, Massachusetts 01609, United States
| | - Xuejian Lyu
- Departments of †Chemical Engineering, ‡Mechanical Engineering, and §Biomedical Engineering, Worcester Polytechnic Institute , 100 Institute Road, Worcester, Massachusetts 01609, United States
| | - Amy M Peterson
- Departments of †Chemical Engineering, ‡Mechanical Engineering, and §Biomedical Engineering, Worcester Polytechnic Institute , 100 Institute Road, Worcester, Massachusetts 01609, United States
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39
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Rajamanickam R, Baek S, Gwon K, Hwang Y, Shin K, Tae G. Mechanical stimuli responsive and highly elastic biopolymer/nanoparticle hybrid microcapsules for controlled release. J Mater Chem B 2016; 4:4278-4286. [PMID: 32263409 DOI: 10.1039/c6tb00410e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mechanical stimulus is one of the universally accessible physical ways of triggering the drug release from their carriers. Hollow microcapsules made of polyelectrolyte multilayers by conventional methods are not elastic enough to respond to a large and repetitive mechanical deformation. Here, hybrid hollow capsules comprising alternating layers of inorganic colloidal particles and biopolymers were prepared by the layer-by-layer approach followed by freezing-assisted crosslinking of polymer layers. The size of the capsule was controllable by the size of sacrificial cores. These hybrid capsules were mechanically more stable and recover faster than polyelectrolyte capsules, and could be recovered elastically even after large and repetitive deformation up to 98% relative to their original dimensions. Drugs in a wide range of molecular weight up to 70 kDa Mw could be loaded into the hollow hybrid microcapsules and the release of loaded contents from these hybrid capsules could be controlled through the deformation by applying a weak force such as a finger pressing on them. Mechanical stimuli-responsive delivery of model drugs was demonstrated on a monolayer of these hybrid capsules.
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Affiliation(s)
- Raja Rajamanickam
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea.
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40
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Zyuzin MV, Honold T, Carregal-Romero S, Kantner K, Karg M, Parak WJ. Influence of Temperature on the Colloidal Stability of Polymer-Coated Gold Nanoparticles in Cell Culture Media. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:1723-1731. [PMID: 26835654 DOI: 10.1002/smll.201503232] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 12/15/2015] [Indexed: 06/05/2023]
Abstract
The temperature-dependence of the hydrodynamic diameter and colloidal stability of gold-polymer core-shell particles with temperature-sensitive (poly(N-isopropylacrylamide)) and temperature-insensitive shells (polyallylaminine hydrochloride/polystyrensulfonate, poly(isobutylene-alt-maleic anhydride)-graft-dodecyl) are investigated in various aqueous media. The data demonstrate that for all nanoparticle agglomeration, i.e., increase in effective nanoparticle size, the presence of salts or proteins in the dispersion media has to be taken into account. Poly(N-isopropylacrylamide) coated nanoparticles show a reversible temperature-dependent increase in size above the volume phase transition of the polymer shell when they are dispersed in phosphate buffered saline or in media containing protein. In contrast, the nanoparticles coated with temperature-insensitive polymers show a time-dependent increase in size in phosphate buffered saline or in medium containing protein. This is due to time-dependent agglomeration, which is particularly strong in phosphate buffered saline, and induces a time-dependent, irreversible increase in the hydrodynamic diameter of the nanoparticles. This demonstrates that one has to distinguish between temperature- and time-induced agglomerations. Since the size of nanoparticles regulates their uptake by cells, temperature-dependent uptake of thermosensitive and non-thermosensitive nanoparticles by cells lines is compared. No temperature-specific difference between both types of nanoparticles could be observed.
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Affiliation(s)
- Mikhail V Zyuzin
- Fachbereich Physik, Philipps Universität Marburg, Marburg, Germany
| | - Tobias Honold
- Department of Chemistry, Universität Bayreuth, Germany
| | - Susana Carregal-Romero
- Fachbereich Physik, Philipps Universität Marburg, Marburg, Germany
- CIC biomaGUNE, Donostia-San Sebastián, Spain
| | - Karsten Kantner
- Fachbereich Physik, Philipps Universität Marburg, Marburg, Germany
| | - Matthias Karg
- Department of Chemistry, Universität Bayreuth, Germany
| | - Wolfgang J Parak
- Fachbereich Physik, Philipps Universität Marburg, Marburg, Germany
- CIC biomaGUNE, Donostia-San Sebastián, Spain
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41
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Gandhi SS, Vidyasagar S, Krishnasamy K. Evidence of stable insulin and its increased efficacy during oral administration with Desmodium gangeticum extract in rats. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2016. [DOI: 10.1016/s2222-1808(15)61016-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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42
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Hu X, McIntosh E, Simon MG, Staii C, Thomas SW. Stimuli-Responsive Free-Standing Layer-By-Layer Films. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:715-21. [PMID: 26618480 DOI: 10.1002/adma.201504219] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 10/20/2015] [Indexed: 05/22/2023]
Abstract
Free-standing, stimuli-responsive polyelectrolyte multilayer films enabled by light-induced degradation of sacrificial compartments are introduced. Two examples are described: i) a triple responsive film that uses light, redox, and pH for different functions, and ii) different wavelengths of light for different functions. This approach to multiresponsive materials offers simple design and chemical synthesis while enabling different stimuli to perform separate functions in the same material.
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Affiliation(s)
- Xiaoran Hu
- Department of Chemistry, Tufts University, Medford, MA, 02155, USA
| | - Ethan McIntosh
- Department of Chemistry, Tufts University, Medford, MA, 02155, USA
| | - Marc G Simon
- Department of Physics and Astronomy, Tufts University, Medford, MA, 02155, USA
| | - Cristian Staii
- Department of Physics and Astronomy, Tufts University, Medford, MA, 02155, USA
| | - Samuel W Thomas
- Department of Chemistry, Tufts University, Medford, MA, 02155, USA
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43
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Wang Y, Chou T, Sukhishvili SA. Spontaneous, One-Pot Assembly of pH-Responsive Hydrogen-Bonded Polymer Capsules. ACS Macro Lett 2016; 5:35-39. [PMID: 35668600 DOI: 10.1021/acsmacrolett.5b00716] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We demonstrate a facile, one-pot spontaneous assembly of hydrogen-bonded polymer containers of controllable size in aqueous solution. Electron microscopy shows that capsule formation is nucleated by a pH-induced phase separation of an amphiphilic poly(carboxylic acid), followed by binding and in-growth of polymer complexes within the phase separated droplets. The simple selection of different molecular weights of a stabilizing polymer affords a wide array of capsule sizes, including those in a submicron range, which are difficult to prepare using the alternative layer-by-layer technique. The capsules can spontaneously coat silica particles, and be reversibly removed by varying pH. Furthermore, the capsule walls can be photo-cross-linked to preserve their integrity over the entire pH scale, resulting in pH-triggered "breathing" containers or responsive coatings on silica particles useful for encapsulation and controlled release.
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Affiliation(s)
- Yuhao Wang
- Department
of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, 507 River Street, Hoboken, New Jersey 07030, United States
| | - Tsengming Chou
- Department
of Chemical Engineering and Materials Science, Stevens Institute of Technology, Castle Point on Hudson, Hoboken, New Jersey 07030, United States
| | - Svetlana A. Sukhishvili
- Department
of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, 507 River Street, Hoboken, New Jersey 07030, United States
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44
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Stetciura IY, Yashchenok A, Masic A, Lyubin EV, Inozemtseva OA, Drozdova MG, Markvichova EA, Khlebtsov BN, Fedyanin AA, Sukhorukov GB, Gorin DA, Volodkin D. Composite SERS-based satellites navigated by optical tweezers for single cell analysis. Analyst 2016; 140:4981-6. [PMID: 26040199 DOI: 10.1039/c5an00392j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Herein, we have designed composite SERS-active micro-satellites, which exhibit a dual role: (i) effective probes for determining cellular composition and (ii) optically movable and easily detectable markers. The satellites were synthesized by the layer-by-layer assisted decoration of silica microparticles with metal (gold or silver) nanoparticles and astralen in order to ensure satellite SERS-based microenvironment probing and satellite recognition, respectively. A combination of optical tweezers and Raman spectroscopy can be used to navigate the satellites to a certain cellular compartment and probe the intracellular composition following cellular uptake. In the future, this developed approach may serve as a tool for single cell analysis with nanometer precision due to the multilayer surface design, focusing on both extracellular and intracellular studies.
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45
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Li YL, Zhu ML, Li XY, Li XH, Jiang Y. A highly expandable and tough polyacrylamide – alginate microcapsule. RSC Adv 2016. [DOI: 10.1039/c6ra05711j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
A highly expandable and tough microcapsule was prepared by water-in-oil emulsion polymerization. The diameter of the prepared microcapsule could be expanded to about 75 times larger than the original size without breakage.
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Affiliation(s)
- Yan-Li Li
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China
| | - Ming-Lu Zhu
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China
| | - Xiao-Yu Li
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China
| | - Xiao-Heng Li
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China
| | - Yong Jiang
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China
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46
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Drug nano-reservoirs synthesized using layer-by-layer technologies. Biotechnol Adv 2015; 33:1310-26. [DOI: 10.1016/j.biotechadv.2015.04.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 03/25/2015] [Accepted: 04/02/2015] [Indexed: 12/18/2022]
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47
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Vergaro V, Papadia P, Leporatti S, De Pascali SA, Fanizzi FP, Ciccarella G. Synthesis of biocompatible polymeric nano-capsules based on calcium carbonate: A potential cisplatin delivery system. J Inorg Biochem 2015; 153:284-292. [PMID: 26560986 DOI: 10.1016/j.jinorgbio.2015.10.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/27/2015] [Accepted: 10/28/2015] [Indexed: 01/06/2023]
Affiliation(s)
- Viviana Vergaro
- CNR NANOTEC-Istituto di Nanotecnologia - CNR, Via Monteroni, 73100 Lecce, Italy
| | - Paride Papadia
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, 73100 Lecce, Italy.
| | - Stefano Leporatti
- CNR NANOTEC-Istituto di Nanotecnologia - CNR, Via Monteroni, 73100 Lecce, Italy
| | - Sandra A De Pascali
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, 73100 Lecce, Italy
| | - Francesco P Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, 73100 Lecce, Italy
| | - Giuseppe Ciccarella
- CNR NANOTEC-Istituto di Nanotecnologia - CNR, Via Monteroni, 73100 Lecce, Italy; Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, 73100 Lecce, Italy.
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48
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Lu CH, Willner I. Stimuli-Responsive DNA-Functionalized Nano-/Microcontainers for Switchable and Controlled Release. Angew Chem Int Ed Engl 2015; 54:12212-35. [DOI: 10.1002/anie.201503054] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Indexed: 01/04/2023]
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49
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Lu CH, Willner I. Stimuliresponsive DNA-funktionalisierte Nano- und Mikrocontainer zur schaltbaren und kontrollierten Freisetzung. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503054] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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50
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Gentile P, Frongia ME, Cardellach M, Miller CA, Stafford GP, Leggett GJ, Hatton PV. Functionalised nanoscale coatings using layer-by-layer assembly for imparting antibacterial properties to polylactide-co-glycolide surfaces. Acta Biomater 2015; 21:35-43. [PMID: 25871538 DOI: 10.1016/j.actbio.2015.04.009] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 04/02/2015] [Accepted: 04/07/2015] [Indexed: 01/09/2023]
Abstract
In order to achieve high local biological activity and reduce the risk of side effects of antibiotics in the treatment of periodontal and bone infections, a localised and temporally controlled delivery system is desirable. The aim of this research was to develop a functionalised and resorbable surface to contact soft tissues to improve the antibacterial behaviour during the first week after its implantation in the treatment of periodontal and bone infections. Solvent-cast poly(d,l-lactide-co-glycolide acid) (PLGA) films were aminolysed and then modified by Layer-by-Layer technique to obtain a nano-layered coating using poly(sodium4-styrenesulfonate) (PSS) and poly(allylamine hydrochloride) (PAH) as polyelectrolytes. The water-soluble antibiotic, metronidazole (MET), was incorporated from the ninth layer. Infrared spectroscopy showed that the PSS and PAH absorption bands increased with the layer number. The contact angle values had a regular alternate behaviour from the ninth layer. X-ray Photoelectron Spectroscopy evidenced two distinct peaks, N1s and S2p, indicating PAH and PSS had been introduced. Atomic Force Microscopy showed the presence of polyelectrolytes on the surface with a measured roughness about 10nm after 20 layers' deposition. The drug release was monitored by Ultraviolet-visible spectroscopy showing 80% loaded-drug delivery in 14 days. Finally, the biocompatibility was evaluated in vitro with L929 mouse fibroblasts and the antibacterial properties were demonstrated successfully against the keystone periodontal bacteria Porphyromonas gingivalis, which has an influence on implant failure, without compromising in vitro biocompatibility. In this study, PLGA was successfully modified to obtain a localised and temporally controlled drug delivery system, demonstrating the potential value of LbL as a coating technology for the manufacture of medical devices with advanced functional properties.
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