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Šušteršič T, Gribova V, Nikolic M, Lavalle P, Filipovic N, Vrana NE. The Effect of Machine Learning Algorithms on the Prediction of Layer-by-Layer Coating Properties. ACS OMEGA 2023; 8:4677-4686. [PMID: 36777619 PMCID: PMC9909801 DOI: 10.1021/acsomega.2c06471] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 12/30/2022] [Indexed: 06/18/2023]
Abstract
Layer-by-layer film (LbL) coatings made of polyelectrolytes are a powerful tool for surface modification, including the applications in the biomedical field, for food packaging, and in many electrochemical systems. However, despite the number of publications related to LbL assembly, predicting LbL coating properties represents quite a challenge, can take a long time, and be very costly. Machine learning (ML) methodologies that are now emerging can accelerate and improve new coating development and potentially revolutionize the field. Recently, we have demonstrated a preliminary ML-based model for coating thickness prediction. In this paper, we compared several ML algorithms for optimizing a methodology for coating thickness prediction, namely, linear regression, Support Vector Regressor, Random Forest Regressor, and Extra Tree Regressor. The current research has shown that learning algorithms are effective in predicting the coating output value, with the Extra Tree Regressor algorithm demonstrating superior predictive performance, when used in combination with optimized hyperparameters and with missing data imputation. The best predictors of the coating thickness were determined, and they can be later used to accurately predict coating thickness, avoiding measurement of multiple parameters. The development of optimized methodologies will ensure different reliable predictive models for coating property/function relations. As a continuation, the methodology can be adapted and used for predicting the outputs connected to antimicrobial, anti-inflammatory, and antiviral properties in order to be able to respond to actual biomedical problems such as antibiotic resistance, implant rejection, or COVID-19 outbreak.
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Affiliation(s)
- Tijana Šušteršič
- Faculty
of Engineering, University of Kragujevac (FINK), Kragujevac34000, Serbia
- Steinbeis
Advanced Risk Technologies Institute doo Kragujevac (SARTIK), Kragujevac34000, Serbia
- Bioengineering
Research and Development Center (BioIRC), Kragujevac34000, Serbia
| | - Varvara Gribova
- Biomaterials
and Bioengineering laboratory, INSERM UMR
1121, Strasbourg67100, France
- Université
de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg67000, France
| | - Milica Nikolic
- Steinbeis
Advanced Risk Technologies Institute doo Kragujevac (SARTIK), Kragujevac34000, Serbia
- Institute
of Information Technologies, University of Kragujevac, Kragujevac34000, Serbia
- Eindhoven
University of Technology, Eindhoven5611 CB, The Netherlands
| | - Philippe Lavalle
- Biomaterials
and Bioengineering laboratory, INSERM UMR
1121, Strasbourg67100, France
- Université
de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg67000, France
- SPARTHA
Medical, Strasbourg67100, France
| | - Nenad Filipovic
- Faculty
of Engineering, University of Kragujevac (FINK), Kragujevac34000, Serbia
- Steinbeis
Advanced Risk Technologies Institute doo Kragujevac (SARTIK), Kragujevac34000, Serbia
- Bioengineering
Research and Development Center (BioIRC), Kragujevac34000, Serbia
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2
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Mehrpooya M, Ganjali MR, Mousavi SA, Hedayat N, Allahyarzadeh A. Comprehensive Review of Fuel-Cell-Type Sensors for Gas Detection. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Affiliation(s)
- Mehdi Mehrpooya
- Department of Renewable Energies and Environment, Faculty of New Sciences and Technologies, University of Tehran, Tehran1439957131, Iran
- Hydrogen and Fuel Cell Laboratory, Faculty of New Sciences and Technologies, University of Tehran, Tehran1439957131, Iran
| | - Mohammad Reza Ganjali
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran1417614411, Iran
- National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran1439957131, Iran
| | - Seyed Ali Mousavi
- Hydrogen and Fuel Cell Laboratory, Faculty of New Sciences and Technologies, University of Tehran, Tehran1439957131, Iran
| | - Nader Hedayat
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, Ohio44325, United States
| | - Ali Allahyarzadeh
- Department of Renewable Energies and Environment, Faculty of New Sciences and Technologies, University of Tehran, Tehran1439957131, Iran
- Mechanical Engineering, Polytechnic School, University of São Paulo, São Paulo68503, Brazil
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3
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Pédehontaa-Hiaa G, Gaudière F, Khelif R, Morin-Grognet S, Labat B, Lutzweiler G, Le Derf F, Atmani H, Morin C, Ladam G. Polyvalent incorporation of anionic β-cyclodextrin polymers into Layer-by-Layer coatings. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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4
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Glucose Fuel Cells and Membranes: A Brief Overview and Literature Analysis. SUSTAINABILITY 2022. [DOI: 10.3390/su14148376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Glucose is a ubiquitous source of energy for nearly all living things, and glucose fuel cells (GFCs) are regarded as a sustainable power source because glucose is renewable, easily available, cheap, abundant, non-toxic and easy-to-store. Numerous efforts have been devoted to developing and improving GFC performance; however, there is still no commercially viable devices on the market. Membranes play an essential role in GFCs for the establishment of a suitable local microenvironment, selective ion conducting and prevention of substrate crossover. However, our knowledge on them is still limited, especially on how to achieve comparable efficacy with that of a biological system. This review article provides the first brief overview on these aspects, particularly keeping in sight the research trends, current challenges, and the future prospects. We aim to bring together literature analysis and technological discussion on GFCs and membranes by using bibliometrics, and provide new ideas for researchers in this field to overcome challenges on developing high-performance GFCs.
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5
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Layer-by-Layer Materials for the Fabrication of Devices with Electrochemical Applications. ENERGIES 2022. [DOI: 10.3390/en15093399] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The construction of nanostructured materials for their application in electrochemical processes, e.g., energy storage and conversion, or sensing, has undergone a spectacular development over the last decades as a consequence of their unique properties in comparison to those of their bulk counterparts, e.g., large surface area and facilitated charge/mass transport pathways. This has driven strong research on the optimization of nanostructured materials for the fabrication of electrochemical devices, which demands techniques allowing the assembly of hybrid materials with well-controlled structures and properties. The Layer-by-Layer (LbL) method is well suited for fulfilling the requirements associated with the fabrication of devices for electrochemical applications, enabling the fabrication of nanomaterials with tunable properties that can be exploited as candidates for their application in fuel cells, batteries, electrochromic devices, solar cells, and sensors. This review provides an updated discussion of some of the most recent advances on the application of the LbL method for the fabrication of nanomaterials that can be exploited in the design of novel electrochemical devices.
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6
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Brewer CR, Sheehan NC, Herrera J, Walker AV, McElwee-White L. Photochemistry of (η 4-diene)Ru(CO) 3 Complexes as Precursor Candidates for Photoassisted Chemical Vapor Deposition. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Christopher R. Brewer
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Nicholas C. Sheehan
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Jessica Herrera
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Amy V. Walker
- Department of Materials Science and Engineering, University of Texas at Dallas, 800W. Campbell Rd, Richardson, Texas 75080, United States
- Department of Chemistry and Biochemistry, University of Texas at Dallas, 800 W. Campbell Rd, Richardson, Texas 75080, United States
| | - Lisa McElwee-White
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
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Abbett RL, Chen Y, Schlenoff JB. Self-Exchange of Polyelectrolyte in Multilayers: Diffusion as a Function of Salt Concentration and Temperature. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01464] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Rachel L. Abbett
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Yuhui Chen
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Joseph B. Schlenoff
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
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8
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Visheratina A, Kumar P, Kotov N. Engineering of inorganic nanostructures with hierarchy of chiral geometries at multiple scales. AIChE J 2021. [DOI: 10.1002/aic.17438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
| | - Prashant Kumar
- Biointerfaces Institute University of Michigan Ann Arbor Michigan USA
| | - Nicholas Kotov
- Biointerfaces Institute University of Michigan Ann Arbor Michigan USA
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9
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Gribova V, Navalikhina A, Lysenko O, Calligaro C, Lebaudy E, Deiber L, Senger B, Lavalle P, Vrana NE. Prediction of coating thickness for polyelectrolyte multilayers via machine learning. Sci Rep 2021; 11:18702. [PMID: 34548560 PMCID: PMC8455527 DOI: 10.1038/s41598-021-98170-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 09/06/2021] [Indexed: 11/09/2022] Open
Abstract
Layer-by-layer (LbL) deposition method of polyelectrolytes is a versatile way of developing functional nanoscale coatings. Even though the mechanisms of LbL film development are well-established, currently there are no predictive models that can link film components with their final properties. The current health crisis has shown the importance of accelerated development of biomedical solutions such as antiviral coatings, and the implementation of machine learning methodologies for coating development can enable achieving this. In this work, using literature data and newly generated experimental results, we first analyzed the relative impact of 23 coating parameters on the coating thickness. Next, a predictive model has been developed using aforementioned parameters and molecular descriptors of polymers from the DeepChem library. Model performance was limited because of insufficient number of data points in the training set, due to the scarce availability of data in the literature. Despite this limitation, we demonstrate, for the first time, utilization of machine learning for prediction of LbL coating properties. It can decrease the time necessary to obtain functional coating with desired properties, as well as decrease experimental costs and enable the fast first response to crisis situations (such as pandemics) where coatings can positively contribute. Besides coating thickness, which was selected as an output value in this study, machine learning approach can be potentially used to predict functional properties of multilayer coatings, e.g. biocompatibility, cell adhesive, antibacterial, antiviral or anti-inflammatory properties.
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Affiliation(s)
- Varvara Gribova
- Inserm UMR_S 1121, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, 67000, Strasbourg, France.,Université de Strasbourg, Faculté de Chirurgie Dentaire, 67000, Strasbourg, France
| | | | | | | | - Eloïse Lebaudy
- Inserm UMR_S 1121, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, 67000, Strasbourg, France.,Université de Strasbourg, Faculté de Chirurgie Dentaire, 67000, Strasbourg, France
| | | | - Bernard Senger
- Inserm UMR_S 1121, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, 67000, Strasbourg, France.,Université de Strasbourg, Faculté de Chirurgie Dentaire, 67000, Strasbourg, France
| | - Philippe Lavalle
- Inserm UMR_S 1121, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, 67000, Strasbourg, France.,Université de Strasbourg, Faculté de Chirurgie Dentaire, 67000, Strasbourg, France.,SPARTHA Medical, 67100, Strasbourg, France
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10
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Mishra NK, Patil N, Yi S, Hopkinson D, Grunlan JC, Wilhite BA. Highly selective hollow fiber membranes for carbon capture via in-situ layer-by-layer surface functionalization. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119381] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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11
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Martinelli H, Tasca E, Andreozzi P, Libertone S, Ritacco H, Giustini M, Moya SE. Polarity studies of single polyelectrolyte layers in polyelectrolyte multilayers probed by steady state and life time doxorubicin fluorescence. J Colloid Interface Sci 2021; 607:153-162. [PMID: 34506997 DOI: 10.1016/j.jcis.2021.08.207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/20/2021] [Accepted: 08/30/2021] [Indexed: 11/27/2022]
Abstract
HYPOTHESIS Polarity in polyelectrolyte multilayers (PEMs) may vary from the inner to the top layers of the film as the charge compensation of the layers is more effective inside the PEMs than in outer layers. Doxorubicin hydrochloride (DX) is used here to sense polarity at the single polyelectrolyte level inside PEMS. EXPERIMENTAL DX is complexed electrostatically to a polyanion, either polystyrene sulfonate (PSS) or polyacrylic acid (PAA) and assembled at selected positions in a multilayer of the polyanion and polyallylamine hydrochloride (PAH) as polycation. Local polarity in the layer domain is evaluated through changes in the intensity ratio of the first to second band of spectra of DX (I1/I2 ratio) by steady state fluorescence, and by Lifetime fluorescence. FINDINGS PAH/PSS multilayers, show a polarity similar to water with DX/PSS as top layer, decreasing to I1/I2 ratios similar to organic solvents as the number of polyelectrolyte layers assembled on top increases. For PAH/PAA multilayers, polarity values reflect a more polar environment than water when DX/PAA is the top layer, remaining unaltered by the assembly of polyelectrolyte layers on top. Results show that different polar environments may be present in a PEM when considering polarity at the single layer level.
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Affiliation(s)
- Hernan Martinelli
- Instituto de Física del Sur (IFISUR-CONICET), Av. Alem 1253, Bahía Blanca (8000), Argentina; Soft Matter Nanotechnology Group, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014 San Sebastián, Guipúzcoa, Spain
| | - Elisamaria Tasca
- Soft Matter Nanotechnology Group, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014 San Sebastián, Guipúzcoa, Spain; Chemistry Department, University "La Sapienza", P.le Aldo Moro 5, 00185 Rome, Italy
| | - Patrizia Andreozzi
- Soft Matter Nanotechnology Group, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014 San Sebastián, Guipúzcoa, Spain; Consorzio Sistemi a Grande Interfase, Department of Chemistry 'Ugo Schiff', University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy
| | - Sara Libertone
- Soft Matter Nanotechnology Group, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014 San Sebastián, Guipúzcoa, Spain
| | - Hernan Ritacco
- Instituto de Física del Sur (IFISUR-CONICET), Av. Alem 1253, Bahía Blanca (8000), Argentina
| | - Mauro Giustini
- Chemistry Department, University "La Sapienza", P.le Aldo Moro 5, 00185 Rome, Italy; Consorzio Sistemi a Grande Interfase, Department of Chemistry 'Ugo Schiff', University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy.
| | - Sergio E Moya
- Soft Matter Nanotechnology Group, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014 San Sebastián, Guipúzcoa, Spain; Chemistry Department, University "La Sapienza", P.le Aldo Moro 5, 00185 Rome, Italy.
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12
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Assunção ICC, Sério S, Ferreira Q, Jones NC, Hoffmann SV, Ribeiro PA, Raposo M. Graphene Oxide Layer-by-Layer Films for Sensors and Devices. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1556. [PMID: 34204721 PMCID: PMC8231500 DOI: 10.3390/nano11061556] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/03/2021] [Accepted: 06/09/2021] [Indexed: 11/16/2022]
Abstract
Layer-by-layer films of poly (allylamine hydrochloride) (PAH) and graphene oxide (GO) were characterized, looking at growth with the number of bilayers, morphology, and electrical properties. The PAH/GO films revealed a linear increase in absorbance with the increase in the number of deposited bilayers, allowing the determination that 10.7 ± 0.1 mg m-2 of GO is adsorbed per unit of area of each bilayer. GO absorption bands at 146, 210, 247 and 299 nm, assigned to π-π* and n-π* transitions in the aromatic ring (phenol) and of the carboxylic group, respectively, were characterized by vacuum ultraviolet spectroscopy. The morphological characterization of these films demonstrated that they are not completely uniform, with a bilayer thickness of 10.5 ± 0.7 nm. This study also revealed that the films are composed of GO and/or PAH/GO fibers and that GO is completely adsorbed on top of PAH. The electrical properties of the films reveal that PAH/GO films present a semiconductor behavior. In addition, a slight decrease in conduction was observed when films were prepared in the presence of visible light, likely due to the presence of oxygen and moisture that contributes to the damage of GO molecules.
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Affiliation(s)
- Ivan C. C. Assunção
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal; (I.C.C.A.); (S.S.)
| | - Susana Sério
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal; (I.C.C.A.); (S.S.)
| | - Quirina Ferreira
- Instituto de Telecomunicações, Avenida Rovisco Pais, 1, 1049-001 Lisboa, Portugal;
| | - Nykola C. Jones
- ISA, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark; (N.C.J.); (S.V.H.)
| | - Søren V. Hoffmann
- ISA, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark; (N.C.J.); (S.V.H.)
| | - Paulo A. Ribeiro
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal; (I.C.C.A.); (S.S.)
| | - Maria Raposo
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal; (I.C.C.A.); (S.S.)
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On the Development of All-Cellulose Capsules by Vesicle-Templated Layer-by-Layer Assembly. Polymers (Basel) 2021; 13:polym13040589. [PMID: 33669230 PMCID: PMC7919828 DOI: 10.3390/polym13040589] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/10/2021] [Accepted: 02/11/2021] [Indexed: 01/15/2023] Open
Abstract
Polymeric multilayer capsules formed by the Layer-by-Layer (LbL) technique are interesting candidates for the purposes of storage, encapsulation, and release of drugs and biomolecules for pharmaceutical and biomedical applications. In the current study, cellulose-based core-shell particles were developed via the LbL technique alternating two cellulose derivatives, anionic carboxymethylcellulose (CMC), and cationic quaternized hydroxyethylcellulose ethoxylate (QHECE), onto a cationic vesicular template made of didodecyldimethylammonium bromide (DDAB). The obtained capsules were characterized by dynamic light scattering (DLS), ζ potential measurements, and high-resolution scanning electron microscopy (HR-SEM). DLS measurements reveal that the size of the particles can be tuned from a hundred nanometers with a low polydispersity index (deposition of 2 layers) up to micrometer scale (deposition of 6 layers). Upon the deposition of each cellulose derivative, the particle charge is reversed, and pH is observed to considerably affect the process thus demonstrating the electrostatic driving force for LbL deposition. The HR-SEM characterization suggests that the shape of the core-shell particles formed is reminiscent of the spherical vesicle template. The development of biobased nano- and micro-containers by the alternating deposition of oppositely charged cellulose derivatives onto a vesicle template offers several advantages, such as simplicity, reproducibility, biocompatibility, low-cost, mild reaction conditions, and high controllability over particle size and composition of the shell.
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Kajita T, Noro A, Seki T, Matsushita Y, Nakamura N. Acidity effects of medium fluids on anhydrous proton conductivity of acid-swollen block polymer electrolyte membranes. RSC Adv 2021; 11:19012-19020. [PMID: 35478621 PMCID: PMC9033556 DOI: 10.1039/d1ra01211h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 05/19/2021] [Indexed: 01/13/2023] Open
Abstract
Proton-conductive polymer electrolyte membranes (PEMs) were prepared by infiltrating sulfuric acid (Sa) or phosphoric acid (Pa) into a polystyrene-b-poly(4-vinylpyridine)-b-polystyrene (S–P–S) triblock copolymer. When the molar ratio of acid to pyridyl groups in S–P–S, i.e., the acid doping level (ADL), is below unity, the P-block/acid phase in the PEMs exhibited a moderately high glass transition temperature (Tg) of ∼140 °C because of consumption of acids for forming the acid–base complexes between the pyridyl groups and the acids, also resulting in almost no free protons in the PEMs; therefore, the PEMs were totally glassy and exhibited almost no anhydrous conductivity. In contrast, when ADL is larger than unity, the Tgs of the phase composed of acid and P blocks were lower than room temperature, due to the excessive molar amount of acid serving as a plasticizer. Such swollen PEMs with excessive amounts of acid releasing free protons were soft and exhibited high conductivities even without humidification. In particular, an S–P–S/Sa membrane with ADL of 4.6 exhibited a very high anhydrous conductivity of 1.4 × 10−1 S cm−1 at 95 °C, which is comparable to that of humidified Nafion membranes. Furthermore, S–P–S/Sa membranes with lower Tgs exhibited higher conductivities than S–P–S/Pa membranes, whereas the temperature dependence of the conductivities for S–P–S/Pa is stronger than that for S–P–S/Sa, suggesting Pa with a lower acidity would not be effectively dissociated into a dihydrogen phosphate anion and a free proton in the PEMs at lower temperatures. Sulfuric acid-swollen block polymer membranes exhibit anhydrous conductivities of ∼0.1 S cm−1 that is higher than those of phosphoric acid-swollen membranes, whereas temperature dependence of conductivities of the latter is stronger than the former.![]()
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Affiliation(s)
- Takato Kajita
- Department of Molecular & Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Atsushi Noro
- Department of Molecular & Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Takahiro Seki
- Department of Molecular & Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Yushu Matsushita
- Department of Molecular & Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Naoki Nakamura
- FC Material Development Dept., Electrification & Environment Material Engineering Div
- Advanced R&D and Engineering Company
- Higashifuji Technical Center
- TOYOTA Motor Corporation
- Shizuoka
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15
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Mishra NK, Patil N, Long C, Yi S, Hopkinson D, Grunlan JC, Wilhite BA. Enhancing H2-permselectivity of high-flux hollow fiber membrane via in-situ layer-by-layer surface treatment. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118312] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Liu H, Brewer CR, Walker AV, McElwee-White L. Photochemistry of 1,5-Cyclooctadiene Platinum Complexes for Photoassisted Chemical Vapor Deposition. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hanwen Liu
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Christopher R. Brewer
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Amy V. Walker
- Department of Materials Science and Engineering, University of Texas at Dallas, 800 West Campbell Road, Richardson, Texas 75080, United States
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Lisa McElwee-White
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
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Yuan W, Weng GM, Lipton J, Li CM, Van Tassel PR, Taylor AD. Weak polyelectrolyte-based multilayers via layer-by-layer assembly: Approaches, properties, and applications. Adv Colloid Interface Sci 2020; 282:102200. [PMID: 32585489 DOI: 10.1016/j.cis.2020.102200] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 06/03/2020] [Accepted: 06/11/2020] [Indexed: 10/24/2022]
Abstract
Layer-by-layer (LbL) assembly is a nanoscale technique with great versatility, simplicity and molecular-level processing of various nanoscopic materials. Weak polyelectrolytes have been used as major building blocks for LbL assembly providing a fundamental and versatile tool to study the underlying mechanisms and practical applications of LbL assembly due to its pH-responsive charge density and molecular conformation. Because of high-density uncompensated charges and high-chain mobility, weak polyelectrolyte exponential multilayer growth is considered one of the fastest developing areas for organized molecular films. In this article, we systematically review the current status and developments of weak polyelectrolyte-based multilayers including all-weak-polyelectrolyte multilayers, weak polyelectrolytes/other components (e.g. strong polyelectrolytes, neutral polymers, and nanoparticles) multilayers, and exponentially grown weak polyelectrolyte multilayers. Several key aspects of weak polyelectrolytes are highlighted including the pH-controllable properties, the responsiveness to environmental pH, and synergetic functions obtained from weak polyelectrolyte/other component multilayers. Throughout this review, useful applications of weak polyelectrolyte-based multilayers in drug delivery, tunable biointerfaces, nanoreactors for synthesis of nanostructures, solid state electrolytes, membrane separation, and sensors are highlighted, and promising future directions in the area of weak polyelectrolyte-based multilayer assembly such as fabrication of multi-responsive materials, adoption of unique building blocks, investigation of internal molecular-level structure and mechanism of exponentially grown multilayers, and exploration of novel biomedical and energy applications are proposed.
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Škugor Rončević I, Krivić D, Buljac M, Vladislavić N, Buzuk M. Polyelectrolytes Assembly: A Powerful Tool for Electrochemical Sensing Application. SENSORS (BASEL, SWITZERLAND) 2020; 20:E3211. [PMID: 32517055 PMCID: PMC7313698 DOI: 10.3390/s20113211] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/01/2020] [Accepted: 06/01/2020] [Indexed: 12/20/2022]
Abstract
The development of sensing coatings, as important sensor elements that integrate functionality, simplicity, chemical stability, and physical stability, has been shown to play a major role in electrochemical sensing system development trends. Simple and versatile assembling procedures and scalability make polyelectrolytes highly convenient for use in electrochemical sensing applications. Polyelectrolytes are mainly used in electrochemical sensor architectures for entrapping (incorporation, immobilization, etc.) various materials into sensing layers. These materials can often increase sensitivity, selectivity, and electronic communications with the electrode substrate, and they can mediate electron transfer between an analyte and transducer. Analytical performance can be significantly improved by the synergistic effect of materials (sensing material, transducer, and mediator) present in these composites. As most reported methods for the preparation of polyelectrolyte-based sensing layers are layer-by-layer and casting/coating methods, this review focuses on the use of the latter methods in the development of electrochemical sensors within the last decade. In contrast to many reviews related to electrochemical sensors that feature polyelectrolytes, this review is focused on architectures of sensing layers and the role of polyelectrolytes in the development of sensing systems. Additionally, the role of polyelectrolytes in the preparation and modification of various nanoparticles, nanoprobes, reporter probes, nanobeads, etc. that are used in electrochemical sensing systems is also reviewed.
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Affiliation(s)
- Ivana Škugor Rončević
- Department of General and Inorganic Chemistry, Faculty of Chemistry and Technology, University of Split, 21000 Split, Croatia; (I.Š.R.); (N.V.)
| | - Denis Krivić
- Division of Biophysics, Gottfried Schatz Research Center, Medical University of Graz, 8036 Graz, Austria;
| | - Maša Buljac
- Department of Environmental Chemistry, Faculty of Chemistry and Technology, University of Split, 21000 Split, Croatia;
| | - Nives Vladislavić
- Department of General and Inorganic Chemistry, Faculty of Chemistry and Technology, University of Split, 21000 Split, Croatia; (I.Š.R.); (N.V.)
| | - Marijo Buzuk
- Department of General and Inorganic Chemistry, Faculty of Chemistry and Technology, University of Split, 21000 Split, Croatia; (I.Š.R.); (N.V.)
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19
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Shawuti S, Sherwani AUR, Can MM, Gülgün MA. Complex Impedance Analyses of Li doped ZnO Electrolyte Materials. Sci Rep 2020; 10:8228. [PMID: 32427919 PMCID: PMC7237472 DOI: 10.1038/s41598-020-65075-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 04/21/2020] [Indexed: 11/28/2022] Open
Abstract
The recent studies indicate that internal point defects in solid electrolytes modify the electronic and ionic conductivity and relaxation mechanism of solid oxide fuel cells. We focused on synthesis of Lithium (Li) doped Zn1-xCoxO (x = 0.00, and 0.10) nanoparticles employing chemical synthesis technique with a reflux setup under constant Argon gas flow. The structural characterizations were performed by x-ray powder diffractometer (XRD) and x-ray photoelectron spectroscopy (XPS). Then, Rietveld refinements were performed to investigate the replacement of Li atom amount in ZnO lattice. Moreover, the variations in ionic conduction dependent on 5, 10 and 20 mol% Li doped ZnO were analysed via ac impedance spectroscopy. The complex measurements were performed in an intermediate temperature range from 100 °C to 400 °C. Ac conductivity responses of each sample were disappeared at a certain temperature due to becoming electronic conductive oxides. However, this specific temperature was tuned to high temperature by Li doping amount in ZnO lattice. Furthermore, the activation energy change by Li dopant amount implied the tuneable ionic conduction mechanism.
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Affiliation(s)
- Shalima Shawuti
- Faculty of Engineering and Natural Science, Sabancı University, Tuzla, Istanbul, Turkey
| | - Atta Ur Rehman Sherwani
- Renewable Energy and Oxide Hybrid Systems Laboratory, Department of Physics, Faculty of Science, Istanbul University, Vezneciler, Istanbul, Turkey
| | - Musa Mutlu Can
- Renewable Energy and Oxide Hybrid Systems Laboratory, Department of Physics, Faculty of Science, Istanbul University, Vezneciler, Istanbul, Turkey.
| | - Mehmet Ali Gülgün
- Faculty of Engineering and Natural Science, Sabancı University, Tuzla, Istanbul, Turkey
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20
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Brewer CR, Hawkins OM, Sheehan NC, Bullock JD, Kleiman VD, Walker AV, McElwee-White L. Photochemistry of (η3-allyl)Ru(CO)3X Precursors for Photoassisted Chemical Vapor Deposition. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00628] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christopher R. Brewer
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Olivia M. Hawkins
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Nicholas C. Sheehan
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - James D. Bullock
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Valeria D. Kleiman
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Amy V. Walker
- Department of Materials Science and Engineering, University of Texas at Dallas, 800 West Campbell Road, Richardson, Texas 75080, United States
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Lisa McElwee-White
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
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21
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Parveen N, Jana PK, Schönhoff M. Viscoelastic Properties of Polyelectrolyte Multilayers Swollen with Ionic Liquid Solutions. Polymers (Basel) 2019; 11:E1285. [PMID: 31374899 PMCID: PMC6722675 DOI: 10.3390/polym11081285] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 07/29/2019] [Accepted: 07/30/2019] [Indexed: 11/16/2022] Open
Abstract
Polyelectrolyte multilayers (PEM) obtained by layer-by-layer assembly can be doped with ionic liquid (IL) via the swelling of the films with IL solutions. In order to examine the mechanical properties of IL-containing PEM, we implement a Kelvin-Voigt model to obtain thickness, viscosity and elastic modulus from the frequency and dissipation shifts determined by a dissipative quartz crystal microbalance (QCM-D). We analyze the changes in the modeled thickness and viscoelasticity of PEI(PSS/PADMAC)4PSS and PEI(PSS/PAH)4PSS multilayers upon swelling by increasing the concentration of either 1-Ethyl-3-methylimidazolium chloride or 1-Hexyl-3-methylimidazolium chloride, which are water soluble ILs. The results show that the thickness of the multilayers changes monotonically up to a certain IL concentration, whereas the viscosity and elasticity change in a non-monotonic fashion with an increasing IL concentration. The changes in the modeled parameters can be divided into three concentration regimes of IL, a behavior specific to ILs (organic salts), which does not occur with swelling by simple inorganic salts such as NaCl. The existence of the regimes is attributed to a competition of the hydrophobic interactions of large hydrophobic ions, which enhance the layer stability at a low salt content, with the electrostatic screening, which dominates at a higher salt content and causes a film softening.
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Affiliation(s)
- Nagma Parveen
- Institute of Physical Chemistry, University of Muenster, 48149 Münster, Germany.
- NRW Graduate School of Chemistry, University of Muenster, 48149 Münster, Germany.
| | - Pritam Kumar Jana
- Interdisciplinary Center for Nonlinear Phenomena and Complex Systems, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Monika Schönhoff
- Institute of Physical Chemistry, University of Muenster, 48149 Münster, Germany.
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22
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OLIVEIRA DANILOA, GASPAROTTO LUIZH, SIQUEIRA JR JOSÉR. Processing of nanomaterials in Layer-by-Layer films: Potential applications in (bio)sensing and energy storage. ACTA ACUST UNITED AC 2019; 91:e20181343. [DOI: 10.1590/0001-3765201920181343] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 02/05/2019] [Indexed: 11/22/2022]
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23
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Ostendorf A, Schönhoff M, Cramer C. Ionic conductivity of solid polyelectrolyte complexes with varying water content: application of the dynamic structure model. Phys Chem Chem Phys 2019; 21:7321-7329. [DOI: 10.1039/c8cp05853a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a systematic study of the dc conductivity of solid polyelectrolyte complexes (PEC) of type xPSS PSS·(1 − xPSS) PDADMA as a function of temperature, and of PSS and water content, respectively. The data are discussed in the framework of the dynamic structure model.
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Affiliation(s)
- A. Ostendorf
- Institute of Physical Chemistry
- University of Muenster
- 48149 Münster
- Germany
| | - M. Schönhoff
- Institute of Physical Chemistry
- University of Muenster
- 48149 Münster
- Germany
| | - C. Cramer
- Institute of Physical Chemistry
- University of Muenster
- 48149 Münster
- Germany
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24
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Park JK, Zhang J, Roy R, Ge S, Hustad PD. Polyelectrolyte multilayer-like films from layer-by-layer processing of protected polyampholytic block copolymers. Chem Commun (Camb) 2018; 54:9478-9481. [PMID: 30087955 DOI: 10.1039/c8cc04492a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Polyelectrolyte multilayer films (PEMs) are conventionally prepared by a layer-by-layer (LbL) deposition of alternating polycation and polyanion solutions. We introduce herein a block copolymer (BCP) approach employing a BCP with an H-bond acceptor block and a protected H-donor block as a masked polyampholyte to form new types of PEMs.
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Affiliation(s)
- Jong Keun Park
- Dow Electronic Materials, 455 Forest St., Marlborough, Massachusetts 01752, USA
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25
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Zhong Y, Nguyen GTM, Plesse C, Vidal F, Jager EWH. Highly Conductive, Photolithographically Patternable Ionogels for Flexible and Stretchable Electrochemical Devices. ACS APPLIED MATERIALS & INTERFACES 2018; 10:21601-21611. [PMID: 29856596 DOI: 10.1021/acsami.8b03537] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
An ionic conducting membrane is an essential part in various electrochemical devices including ionic actuators. To miniaturize these devices, micropatterns of ionic conducting membrane are desired. Here, we present a novel type of ionogel that can be patterned using standard photolithography and soft imprinting lithography. The ionogel is prepared in situ by UV-initiated free-radical polymerization of thiol acrylate precursors in the presence of ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide. The resultant ionogel is very flexible with a low Young's modulus (as low as 0.23 MPa) and shows a very high ionic conductivity (up to 2.4 × 10-3 S/cm with 75 wt % ionic liquid incorporated) and has a reactive surface due to the excess thiol groups. Micropatterns of ionogel are obtained by using the thiol acrylate ionogel solution as an ionic conducting photoresist with standard photolithography. Water, a solvent immiscible with ionic liquid, is used as the photoresist developer to avoid complete removal of ionic liquid from thin micropatterns of the ionogel. By taking advantage of the reactive surface of ionogels and the photopatternability, ionogels with complex three-dimensional microstructure are developed. The surface of the ionogels can also be easily patterned using UV-assisted soft imprinting lithography. This new type of ionogels may open up for building high-performance flexible electrochemical microdevices.
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Affiliation(s)
- Yong Zhong
- Sensor and Actuator Systems (SAS), Department of Physics, Chemistry and Biology (IFM) , Linköping University , Linköping 581 83 , Sweden
| | - Giao T M Nguyen
- Laboratoire de Physicochimie des Polymères et des Interfaces, Institut des Matériaux , Université de Cergy-Pontoise , Cergy-Pontoise Cedex 95000 , France
| | - Cédric Plesse
- Laboratoire de Physicochimie des Polymères et des Interfaces, Institut des Matériaux , Université de Cergy-Pontoise , Cergy-Pontoise Cedex 95000 , France
| | - Frédéric Vidal
- Laboratoire de Physicochimie des Polymères et des Interfaces, Institut des Matériaux , Université de Cergy-Pontoise , Cergy-Pontoise Cedex 95000 , France
| | - Edwin W H Jager
- Sensor and Actuator Systems (SAS), Department of Physics, Chemistry and Biology (IFM) , Linköping University , Linköping 581 83 , Sweden
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26
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Alford A, Kozlovskaya V, Kharlampieva E. Small Angle Scattering for Pharmaceutical Applications: From Drugs to Drug Delivery Systems. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1009:239-262. [PMID: 29218564 DOI: 10.1007/978-981-10-6038-0_15] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The sub-nanometer scale provided by small angle neutron and X-ray scattering is of special importance to pharmaceutical and biomedical investigators. As drug delivery devices become more functionalized and continue decreasing in size, the ability to elucidate details on size scales smaller than those available from optical techniques becomes extremely pertinent. Information gathered from small angle scattering therefore aids the endeavor of optimizing pharmaceutical efficacy at its most fundamental level. This chapter will provide some relevant examples of drug carrier technology and how small angle scattering (SAS) can be used to solve their mysteries. An emphasis on common first-step data treatments is provided which should help clarify the contents of scattering data to new researchers. Specific examples of pharmaceutically relevant research on novel systems and the role SAS plays in these studies will be discussed. This chapter provides an overview of the current applications of SAS in drug research and some practical considerations for selecting scattering techniques.
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Affiliation(s)
- Aaron Alford
- Department of Chemistry, University of Alabama at Birmingham, 901 14th Street South, CHEM 272, Birmingham, AL, 35294, USA
| | - Veronika Kozlovskaya
- Department of Chemistry, University of Alabama at Birmingham, 901 14th Street South, CHEM 272, Birmingham, AL, 35294, USA
| | - Eugenia Kharlampieva
- Department of Chemistry, University of Alabama at Birmingham, 901 14th Street South, CHEM 272, Birmingham, AL, 35294, USA.
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27
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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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28
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Batys P, Luukkonen S, Sammalkorpi M. Ability of the Poisson-Boltzmann equation to capture molecular dynamics predicted ion distribution around polyelectrolytes. Phys Chem Chem Phys 2018; 19:24583-24593. [PMID: 28853454 DOI: 10.1039/c7cp02547e] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Here, we examine polyelectrolyte (PE) and ion chemistry specificity in ion condensation via all-atom molecular dynamics (MD) simulations and assess the ability of the Poisson-Boltzmann (PB) equation to describe the ion distribution predicted by the MD simulations. The PB model enables the extraction of parameters characterizing ion condensation. We find that the modified PB equation which contains the effective PE radius and the energy of the ion-specific interaction as empirical fitting parameters describes ion distribution accurately at large distances but close to the PE, especially when strongly localized charge or specific ion binding sites are present, the mean field description of PB fails. However, the PB model captures the MD predicted ion condensation in terms of the Manning radius and fraction of condensed counterions for all the examined PEs and ion species. We show that the condensed ion layer thickness in our MD simulations collapses on a single master curve for all the examined simple, monovalent ions (Na+, Br+, Cs+, Cl-, and Br-) and PEs when plotted against the Manning parameter (and consequently the PE line charge density). The significance of this finding is that, contrary to the Manning radius extracted from the mean field PB model, the condensed layer thickness in the all atom detail MD modelling does not depend on the PE chemistry or counterion type. Furthermore, the fraction of condensed counterions in the MD simulations exceeds the PB theory prediction. The findings contribute toward understanding and modelling ion distribution around PEs and other charged macromolecules in aqueous solutions, such as DNA, functionalized nanotubes, and viruses.
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Affiliation(s)
- Piotr Batys
- Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland.
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29
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de Silva UK, Choudhuri K, Bryant-Friedrich AC, Lapitsky Y. Customizing polyelectrolyte complex shapes through photolithographic directed assembly. SOFT MATTER 2018; 14:521-532. [PMID: 29300411 DOI: 10.1039/c7sm02022h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Polyelectrolyte complexes (PECs) form through the association of oppositely charged polymers and, due to their attractive properties, such as their mild/simple preparation and stimulus-sensitivity, attract widespread interest. The diverse applications of these materials often require control over PEC shapes. As a versatile approach to achieving such control, we report a new photolithographic directed assembly method for tailoring their structure. This method uses aqueous solutions of a polyelectrolyte, an oppositely charged monomer and a photoinitiator. Irradiation of these mixtures leads to site-specific polymerization of the ionic monomer into a polymer and, through this localized polyanion/polycation mixture formation, results in the assembly of PECs with 2-D and 3-D shapes that reflect the photoirradiation pattern. In addition to generating macroscopic PECs using photomasks, this photodirected PEC assembly method can be combined with multiphoton lithography, which enables the preparation of custom-shaped PECs with microscopic dimensions. Like other PECs, the custom-shaped structures formed through this photodirected assembly approach are stimulus-responsive, and can be made to switch shape or dissolve in response to changes in their external environments. This control over PEC shape and stimulus-sensitivity suggests the photopolymerization-based directed PEC assembly method as a potentially attractive route to stimulus-responsive soft device fabrication (e.g., preparation of intricately shaped, function-specific PECs through photolithographic 3-D printing).
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Affiliation(s)
- Udaka K de Silva
- Department of Chemical Engineering, University of Toledo, Toledo, Ohio 43606, USA.
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30
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Percival SJ, Small LJ, Spoerke ED, Rempe SB. Polyelectrolyte layer-by-layer deposition on nanoporous supports for ion selective membranes. RSC Adv 2018; 8:32992-32999. [PMID: 35547704 PMCID: PMC9086297 DOI: 10.1039/c8ra05580g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 09/14/2018] [Indexed: 11/21/2022] Open
Abstract
This work demonstrates that the ionic selectivity and ionic conductivity of nanoporous membranes can be controlled independently via layer-by-layer (LbL) deposition of polyelectrolytes and subsequent selective cross-linking of these polymer layers. LbL deposition offers a scalable, inexpensive method to tune the ion transport properties of nanoporous membranes by sequentially dip coating layers of cationic polyethyleneimine and anionic poly(acrylic acid) onto polycarbonate membranes. The cationic and anionic polymers are self-assembled through electrostatic and hydrogen bonding interactions and are chemically crosslinked to both change the charge distribution and improve the intermolecular integrity of the deposited films. Both the thickness of the deposited coating and the use of chemical cross-linking agents influence charge transport properties significantly. Increased polyelectrolyte thickness increases the selectivity for cationic transport through the membranes while adding polyelectrolyte films decreases the ionic conductivity compared to an uncoated membrane. Once the nanopores are filled, no additional decrease in conductivity is observed with increasing film thickness and, upon cross-linking, a portion of the lost conductivity is recovered. The cross-linking agent also influences the ionic selectivity of the resulting polyelectrolyte membranes. Increased selectivity for cationic transport occurs when using glutaraldehyde as the cross-linking agent, as expected due to the selective cross-linking of primary amines that decreases the net positive charge. Together, these results inform deposition of chemically robust, highly conductive, ion-selective membranes onto inexpensive porous supports for applications ranging from energy storage to water purification. This work demonstrates that the ionic selectivity and ionic conductivity of nanoporous membranes can be controlled independently via layer-by-layer (LbL) deposition of polyelectrolytes and subsequent selective cross-linking of these polymer layers.![]()
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Affiliation(s)
| | - Leo J. Small
- Sandia National Laboratories
- Albuquerque
- USA 87185
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31
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Thomas JM, Radhakrishnan VN, Aravindakumar CT, Aravind UK. Polyelectrolyte Functional Bilayers for the Removal of Model Emerging Contaminants. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02915] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Jain M. Thomas
- School
of Chemical Sciences, ‡Inter University Instrumentation Centre, #School of Environmental
Sciences, §Advanced Centre of Environmental Studies and Sustainable Development, Mahatma Gandhi University, P.D. Hills P.O., 686560 Kottayam, India
| | - V. N. Radhakrishnan
- School
of Chemical Sciences, ‡Inter University Instrumentation Centre, #School of Environmental
Sciences, §Advanced Centre of Environmental Studies and Sustainable Development, Mahatma Gandhi University, P.D. Hills P.O., 686560 Kottayam, India
| | - C. T. Aravindakumar
- School
of Chemical Sciences, ‡Inter University Instrumentation Centre, #School of Environmental
Sciences, §Advanced Centre of Environmental Studies and Sustainable Development, Mahatma Gandhi University, P.D. Hills P.O., 686560 Kottayam, India
| | - Usha K. Aravind
- School
of Chemical Sciences, ‡Inter University Instrumentation Centre, #School of Environmental
Sciences, §Advanced Centre of Environmental Studies and Sustainable Development, Mahatma Gandhi University, P.D. Hills P.O., 686560 Kottayam, India
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32
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De S, Ostendorf A, Schönhoff M, Cramer C. Ion Conduction and Its Activation in Hydrated Solid Polyelectrolyte Complexes. Polymers (Basel) 2017; 9:E550. [PMID: 30965857 PMCID: PMC6418868 DOI: 10.3390/polym9110550] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 10/20/2017] [Accepted: 10/20/2017] [Indexed: 11/23/2022] Open
Abstract
For the first time, temperature-dependent conductivities at constant water content for a series of solid polyelectrolyte complexes with varying mixing ratios of anionic poly(sodium 4-styrene sulfonate) and poly(diallyldimethylammonium chloride) are presented. For water absorption, the samples are first equilibrated at an ambient temperature and at fixed relative humidity (RH). During the conductivity measurements, the so achieved water content of the samples is kept constant. At all of the hydration levels, the dc conductivities of the hydrated polyelectrolyte complexes (PEC) display Arrhenius behavior with activation enthalpies that are significantly lower than those of dry complexes. The activation enthalpy decreases linearly with water content. The lower activation enthalpies in case of hydrated as compared to dried complexes are attributed to a lowering of the energy barriers for ion motion. Finally, it is shown that the temperature-dependent conductivity spectra at constant water content obey the time-temperature superposition principle. Additionally, temperature-dependent conductivities at constant water content are compared to data sets determined in a separate study with constant RH at all of the temperatures. For the latter case, the influence of the type of alkali ion is also considered. Using the broad variety of data sets, the influences of water content and temperature on the conductivity mechanism can be separated from each other.
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Affiliation(s)
- Souvik De
- NRW Graduate School of Chemistry, University of Muenster, Wilhelm-Klemm-Str. 10, D-48149 Muenster, Germany.
- Institute of Physical Chemistry, University of Muenster, Corrensstraße 28/30, D-48149 Münster, Germany.
| | - Annika Ostendorf
- Institute of Physical Chemistry, University of Muenster, Corrensstraße 28/30, D-48149 Münster, Germany.
| | - Monika Schönhoff
- Institute of Physical Chemistry, University of Muenster, Corrensstraße 28/30, D-48149 Münster, Germany.
| | - Cornelia Cramer
- Institute of Physical Chemistry, University of Muenster, Corrensstraße 28/30, D-48149 Münster, Germany.
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33
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Parveen N, Schönhoff M. Quantifying and controlling the cation uptake upon hydrated ionic liquid-induced swelling of polyelectrolyte multilayers. SOFT MATTER 2017; 13:1988-1997. [PMID: 28186520 DOI: 10.1039/c6sm02683d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Controlling the uptake of specific ions in polyelectrolyte multilayers is of interest for various fields of application. Here, we quantify the amount of cation of an ionic liquid, namely 1,3-bis(cyanomethyl)imidazolium chloride, incorporated into polyelectrolyte multilayers upon contact with an ionic liquid solution. The ion partition equilibrium is determined depending on concentration in solution, employing attenuated total reflection infrared spectroscopy. Generating an excess charge in multilayers by post-preparative manipulation of their charge balance, one can control the incorporated amount. Three multilayer systems are assembled for this purpose, i.e., PSS/PDADMAC, PSS/PAH and PAA/PDADMAC, employing poly(styrene sulfonate) (PSS), poly(diallyldimethylammonium chloride) (PDADMAC), poly(allylamine hydrochloride) (PAH) and poly(acrylic acid) (PAA). The charge balance of the latter two films is manipulated by an external pH stimulus generating an excess positive or negative internal charge, respectively. The concentration of cations in PEM amounts to 30% to 100% of the bulk concentration and scales as PAA/PDADMAC > PSS/PDADMAC > PSS/PAH. Thus, post-preparative pH treatment may be a future tool to create ion-conductive polymer gel films with a desired concentration of small cations.
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Affiliation(s)
- N Parveen
- Institute of Physical Chemistry, University of Muenster, Corrensstr. 28/30, 48149 Münster, Germany. and NRW Graduate School of Chemistry, University of Muenster, Wilhelm-Klemm-Str. 10, D-48149 Münster, Germany
| | - M Schönhoff
- Institute of Physical Chemistry, University of Muenster, Corrensstr. 28/30, 48149 Münster, Germany.
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Johnson KR, Arevalo Rodriguez P, Brewer CR, Brannaka JA, Shi Z, Yang J, Salazar B, McElwee-White L, Walker AV. Photochemical CVD of Ru on functionalized self-assembled monolayers from organometallic precursors. J Chem Phys 2017; 146:052816. [PMID: 28178809 DOI: 10.1063/1.4971434] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Chemical vapor deposition (CVD) is an attractive technique for the metallization of organic thin films because it is selective and the thickness of the deposited film can easily be controlled. However, thermal CVD processes often require high temperatures which are generally incompatible with organic films. In this paper, we perform proof-of-concept studies of photochemical CVD to metallize organic thin films. In this method, a precursor undergoes photolytic decomposition to generate thermally labile intermediates prior to adsorption on the sample. Three readily available Ru precursors, CpRu(CO)2Me, (η3-allyl)Ru(CO)3Br, and (COT)Ru(CO)3, were employed to investigate the role of precursor quantum yield, ligand chemistry, and the Ru oxidation state on the deposition. To investigate the role of the substrate chemistry on deposition, carboxylic acid-, hydroxyl-, and methyl-terminated self-assembled monolayers were used. The data indicate that moderate quantum yields for ligand loss (φ ≥ 0.4) are required for ruthenium deposition, and the deposition is wavelength dependent. Second, anionic polyhapto ligands such as cyclopentadienyl and allyl are more difficult to remove than carbonyls, halides, and alkyls. Third, in contrast to the atomic layer deposition, acid-base reactions between the precursor and the substrate are more effective for deposition than nucleophilic reactions. Finally, the data suggest that selective deposition can be achieved on organic thin films by judicious choice of precursor and functional groups present on the substrate. These studies thus provide guidelines for the rational design of new precursors specifically for selective photochemical CVD on organic substrates.
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Affiliation(s)
- Kelsea R Johnson
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA
| | - Paul Arevalo Rodriguez
- Department of Materials Science and Engineering, University of Texas at Dallas, 800 W. Campbell Rd, Richardson, Texas 75080, USA
| | - Christopher R Brewer
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA
| | - Joseph A Brannaka
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA
| | - Zhiwei Shi
- Department of Materials Science and Engineering, University of Texas at Dallas, 800 W. Campbell Rd, Richardson, Texas 75080, USA
| | - Jing Yang
- Department of Materials Science and Engineering, University of Texas at Dallas, 800 W. Campbell Rd, Richardson, Texas 75080, USA
| | - Bryan Salazar
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, USA
| | - Lisa McElwee-White
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA
| | - Amy V Walker
- Department of Materials Science and Engineering, University of Texas at Dallas, 800 W. Campbell Rd, Richardson, Texas 75080, USA
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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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Oded M, Kelly ST, Gilles MK, Müller AH, Shenhar R. From dots to doughnuts: Two-dimensionally confined deposition of polyelectrolytes on block copolymer templates. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.07.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Oded M, Müller AHE, Shenhar R. A block copolymer-templated construction approach for the creation of nano-patterned polyelectrolyte multilayers and nanoscale objects. SOFT MATTER 2016; 12:8098-8103. [PMID: 27550638 DOI: 10.1039/c6sm01678b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A block copolymer-based assembly approach for the creation of nano-patterned polyelectrolyte multilayers over cm2-scale areas is presented. Up to 5 bi-layers were selectively assembled on top of specific nano-domains featuring different morphologies. The successful isolation of nanoscale objects corresponding in shape to the template features is also demonstrated. This methodology is applicable to different types of polyelectrolytes, and opens up a new dimension for layer-by-layer construction.
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Affiliation(s)
- Meirav Oded
- The Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel.
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38
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Gu Y, Weinheimer EK, Ji X, Wiener CG, Zacharia NS. Response of Swelling Behavior of Weak Branched Poly(ethylene imine)/Poly(acrylic acid) Polyelectrolyte Multilayers to Thermal Treatment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:6020-7. [PMID: 27232180 DOI: 10.1021/acs.langmuir.6b00206] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Weak polyelectrolyte multilayers (PEMs) prepared by the layer-by-layer technique have attracted a great deal of attention as smart responsive materials for biological and other applications in aqueous medium, but their dynamic behavior as a function of exposure to a wide temperature range is still not well understood. In this work, the thermally dependent swelling behavior of PEMs consisting of branched poly(ethylenimine) and poly(acrylic acid) is studied by temperature controlled in situ spectroscopic ellipsometry. Because of diffusion and interpenetration of polyelectrolytes during film deposition, the PEMs densify with increasing bilayer number, which further affects their water uptake behavior. Upon heating to temperatures below 60 °C, the worsened solvent quality of the PEM in water causes deswelling of the PEMs. However, once heated above this critical temperature, the hydrogen bonds within the PEMs are weakened, which allows for chain rearrangement within the film upon cooling, resulting in enhanced water uptake and increased film thickness. The current work provides fundamental insight into the unique dynamic behavior of weak polyelectrolyte multilayers in water at elevated temperatures.
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Affiliation(s)
- Yuanqing Gu
- Department of Polymer Engineering, University of Akron , Akron, Ohio 44325, United States
| | - Emily K Weinheimer
- Department of Polymer Engineering, University of Akron , Akron, Ohio 44325, United States
| | - Xiang Ji
- Department of Polymer Engineering, University of Akron , Akron, Ohio 44325, United States
| | - Clinton G Wiener
- 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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Marmisollé WA, Azzaroni O. Recent developments in the layer-by-layer assembly of polyaniline and carbon nanomaterials for energy storage and sensing applications. From synthetic aspects to structural and functional characterization. NANOSCALE 2016; 8:9890-9918. [PMID: 27138455 DOI: 10.1039/c5nr08326e] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The construction of hybrid polymer-inorganic nanoarchitectures for electrochemical purposes based on the layer-by-layer assembly of conducting polymers and carbon nanomaterials has become increasingly popular over the last decade. This explosion of interest is primarily related to the increasing mastery in the design of supramolecular constructs using simple wet chemical approaches. Concomitantly, this continuous research activity paved the way to the rapid development of nanocomposites or "nanoblends" readily integrable into energy storage and sensing devices. In this sense, the layer-by-layer (LbL) assembly technique has allowed us to access three-dimensional (3D) multicomponent carbon-based network nanoarchitectures displaying addressable electrical, electrochemical and transport properties in which conducting polymers, such as polyaniline, and carbon nanomaterials, such as carbon nanotubes or nanographene, play unique roles without disrupting their inherent functions - complementary entities coexisting in harmony. Over the last few years the level of functional sophistication reached by LbL-assembled carbon-based 3D network nanoarchitectures, and the level of knowledge related to how to design, fabricate and optimize the properties of these 3D nanoconstructs have advanced enormously. This feature article presents and discusses not only the recent advances but also the emerging challenges in complex hybrid nanoarchitectures that result from the layer-by-layer assembly of polyaniline, a quintessential conducting polymer, and diverse carbon nanomaterials. This is a rapidly developing research area, and this work attempts to provide an overview of the diverse 3D network nanoarchitectures prepared up to now. The importance of materials processing and LbL integration is explored within each section and while the overall emphasis is on energy storage and sensing applications, the most widely-used synthetic strategies and characterization methods for "nanoblend" formation and performance evaluation are also presented.
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Affiliation(s)
- Waldemar A Marmisollé
- Instituto de Investigaciones Fisicoquímica Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET, C.C. 16 Suc. (1900) La Plata, Argentina
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40
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Stewart B, Burrows HD. Molecular Dynamics Study of Self-Assembly of Aqueous Solutions of Poly[9,9-bis(4-Sulfonylbutoxyphenylphenyl) Fluorene-2,7-diyl-2,2'-Bithiophene] (PBS-PF2T) in the Presence of Pentaethylene Glycol Monododecyl Ether (C 12E₅). MATERIALS (BASEL, SWITZERLAND) 2016; 9:E379. [PMID: 28773506 PMCID: PMC5503020 DOI: 10.3390/ma9050379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 05/09/2016] [Accepted: 05/10/2016] [Indexed: 01/31/2023]
Abstract
Results are presented using molecular dynamics (MD) of the self-assembly of the conjugated polyelectrolyte poly[9,9-bis(4-sulfonylbutoxyphenylphenyl) fluorene-2,7-diyl-2,2'-bithiophene] (PBS-PF2T) with 680 mM pentaethylene glycol monododecyl ether (C12E₅) in water. Simulations are used to examine the interaction between PBS-PF2T and C12E₅ and suggest a break-up of PBS-PF2T aggregates in solution. These systems are dominated by the formation of cylindrical phases at temperatures between 0 °C and 20 °C and also between 45 °C and 90 °C. More diffuse phases are seen to occur between 20 °C and 45 °C and also above 90 °C. Simulations are related to previous computational and experimental studies on PBS-PF2T aggregation in the presence of tetraethylene glycol monododecyl ether (C12E₄) in bulk and thin films.
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Affiliation(s)
- Beverly Stewart
- Centro de Química de Coimbra, Chemistry Department, University of Coimbra, Coimbra 3004-535, Portugal.
| | - Hugh Douglas Burrows
- Centro de Química de Coimbra, Chemistry Department, University of Coimbra, Coimbra 3004-535, Portugal.
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41
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Huber RC, Ferreira AS, Aguirre JC, Kilbride D, Toso DB, Mayoral K, Zhou ZH, Kopidakis N, Rubin Y, Schwartz BJ, Mason TG, Tolbert SH. Structure and Conductivity of Semiconducting Polymer Hydrogels. J Phys Chem B 2016; 120:6215-24. [DOI: 10.1021/acs.jpcb.6b02202] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rachel C. Huber
- Department
of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095-1569, United States
| | - Amy S. Ferreira
- Department
of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095-1569, United States
| | - Jordan C. Aguirre
- Department
of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095-1569, United States
| | - Daniel Kilbride
- Department
of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095-1569, United States
| | - Daniel B. Toso
- Department of Microbiology, Immunology & Molecular Genetics, and Biomedical Engineering Program, UCLA, 609 Charles E. Young Drive South, Los Angeles, California 90095, United States
| | - Kenny Mayoral
- Department
of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095-1569, United States
| | - Z. Hong Zhou
- Department of Microbiology, Immunology & Molecular Genetics, and Biomedical Engineering Program, UCLA, 609 Charles E. Young Drive South, Los Angeles, California 90095, United States
- California NanoSystems
Institute, UCLA, 570 Westwood Plaza, Los Angeles, California 90095, United States
| | - Nikos Kopidakis
- Chemical and Nanoscience
Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States
| | - Yves Rubin
- Department
of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095-1569, United States
| | - Benjamin J. Schwartz
- Department
of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095-1569, United States
- California NanoSystems
Institute, UCLA, 570 Westwood Plaza, Los Angeles, California 90095, United States
| | - Thomas G. Mason
- Department
of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095-1569, United States
| | - Sarah H. Tolbert
- Department
of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095-1569, United States
- California NanoSystems
Institute, UCLA, 570 Westwood Plaza, Los Angeles, California 90095, United States
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42
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Gittleson FS, Hwang D, Ryu WH, Hashmi SM, Hwang J, Goh T, Taylor AD. Ultrathin Nanotube/Nanowire Electrodes by Spin-Spray Layer-by-Layer Assembly: A Concept for Transparent Energy Storage. ACS NANO 2015; 9:10005-17. [PMID: 26344174 DOI: 10.1021/acsnano.5b03578] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Fully integrated transparent devices require versatile architectures for energy storage, yet typical battery electrodes are thick (20-100 μm) and composed of optically absorbent materials. Reducing the length scale of active materials, assembling them with a controllable method and minimizing electrode thickness should bring transparent batteries closer to reality. In this work, the rapid and controllable spin-spray layer-by-layer (SSLbL) method is used to generate high quality networks of 1D nanomaterials: single-walled carbon nanotubes (SWNT) and vanadium pentoxide (V2O5) nanowires for anode and cathode electrodes, respectively. These ultrathin films, deposited with ∼2 nm/bilayer precision are transparent when deposited on a transparent substrate (>87% transmittance) and electrochemically active in Li-ion cells. SSLbL-assembled ultrathin SWNT anodes and V2O5 cathodes exhibit reversible lithiation capacities of 23 and 7 μAh/cm(2), respectively at a current density of 5 μA/cm(2). When these electrodes are combined in a full cell, they retain ∼5 μAh/cm(2) capacity over 100 cycles, equivalent to the prelithiation capacity of the limiting V2O5 cathode. The SSLbL technique employed here to generate functional thin films is uniquely suited to the generation of transparent electrodes and offers a compelling path to realize the potential of fully integrated transparent devices.
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Affiliation(s)
- Forrest S Gittleson
- Department of Chemical and Environmental Engineering, Yale University , 9 Hillhouse Avenue, New Haven, Connecticut 06520, United States
| | - Daniel Hwang
- Department of Chemical and Environmental Engineering, Yale University , 9 Hillhouse Avenue, New Haven, Connecticut 06520, United States
| | - Won-Hee Ryu
- Department of Chemical and Environmental Engineering, Yale University , 9 Hillhouse Avenue, New Haven, Connecticut 06520, United States
| | - Sara M Hashmi
- Department of Chemical and Environmental Engineering, Yale University , 9 Hillhouse Avenue, New Haven, Connecticut 06520, United States
| | - Jonathan Hwang
- Department of Chemical and Environmental Engineering, Yale University , 9 Hillhouse Avenue, New Haven, Connecticut 06520, United States
- Department of Materials Science and Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Tenghooi Goh
- Department of Chemical and Environmental Engineering, Yale University , 9 Hillhouse Avenue, New Haven, Connecticut 06520, United States
| | - André D Taylor
- Department of Chemical and Environmental Engineering, Yale University , 9 Hillhouse Avenue, New Haven, Connecticut 06520, United States
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Cortez ML, Ceolín M, Azzaroni O, Battaglini F. Formation of redox-active self-assembled polyelectrolyte–surfactant complexes integrating glucose oxidase on electrodes: Influence of the self-assembly solvent on the signal generation. Bioelectrochemistry 2015; 105:117-22. [DOI: 10.1016/j.bioelechem.2015.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Revised: 05/23/2015] [Accepted: 06/10/2015] [Indexed: 11/28/2022]
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44
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Burrows HD, Valente AJ, Costa T, Stewart B, Tapia MJ, Scherf U. What conjugated polyelectrolytes tell us about aggregation in polyelectrolyte/surfactant systems. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.04.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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45
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Aboudzadeh M, Zhu H, Pozo-Gonzalo C, Shaplov AS, Mecerreyes D, Forsyth M. Ionic conductivity and molecular dynamic behavior in supramolecular ionic networks; the effect of lithium salt addition. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.02.064] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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46
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Huang X, Zacharia NS. Functional polyelectrolyte multilayer assemblies for surfaces with controlled wetting behavior. J Appl Polym Sci 2015. [DOI: 10.1002/app.42767] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Xiayun Huang
- Department of Mechanical Engineering; Texas A&M University, College Station; Texas 77843
| | - Nicole S. Zacharia
- Department of Mechanical Engineering; Texas A&M University, College Station; Texas 77843
- Department of Polymer Engineering; University of Akron; Akron Ohio 44325
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47
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Ho TTM, Bremmell KE, Krasowska M, Stringer DN, Thierry B, Beattie DA. Tuning polyelectrolyte multilayer structure by exploiting natural variation in fucoidan chemistry. SOFT MATTER 2015; 11:2110-24. [PMID: 25599229 DOI: 10.1039/c4sm02552k] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Fucoidan is a sulfated polysaccharide that is extracted primarily from seaweed. The polymer contains a natural variation in chemistry based upon the species of seaweed from which it is extracted. We have used two different fucoidans from two different seaweed species (Fucus vesiculosus - FV; and Undaria pinnatifida - UP) as polyanions for the formation of polysaccharide-based polyelectrolyte multilayers (PEMs), to determine if the chemistry of different fucoidans can be chosen to fine-tune the structure of the polymer film. Partially acetylated chitosan was chosen as the polycation for the work, and the presented data illustrate the effect of secondary hydrogen bonding interactions on PEM build-up and properties. Ellipsometry and quartz crystal microbalance with dissipation monitoring (QCM-D) measurements performed during film build-up enabled detailed measurements of layer thickness, adsorbed mass, and the dynamics of the multilayer formation process. High quality atomic force microscopy (AFM) images revealed the differences in morphology of the PEMs formed from the two fucoidans, and allowed for a more direct layer thickness measurement. X-ray photoelectron spectroscopy (XPS) confirmed the chemistry of the films, and an indication of the altered interactions between chitosan and fucoidan with variation in fucoidan type, but also with layer number. Distinct differences were observed between multilayers formed with the two fucoidans, with those constructed using UP having thinner, denser, less hydrated layers than those constructed using FV. These differences are discussed in the context of their varied chemistry, primarily their difference in molecular weight and degree of acetylation.
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Affiliation(s)
- Tracey T M Ho
- Ian Wark Research Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, SA 5095, Australia.
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48
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Affiliation(s)
- Paula T. Hammond
- Dept. of Chemical Engineering and Koch Institute of Integrative Cancer Research; Massachusetts Institute of Technology; Cambridge MA 02139
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49
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50
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Papagiannopoulos A, Christoulaki A, Spiliopoulos N, Vradis A, Toprakcioglu C, Pispas S. Complexation of lysozyme with adsorbed PtBS-b-SCPI block polyelectrolyte micelles on silver surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:685-694. [PMID: 25525817 DOI: 10.1021/la504873h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We present a study of the interaction of the positively charged model protein lysozyme with the negatively charged amphiphilic diblock polyelectrolyte micelles of poly(tert-butylstyrene-b-sodium (sulfamate/carboxylate)isoprene) (PtBS-b-SCPI) on the silver/water interface. The adsorption kinetics are monitored by surface plasmon resonance, and the surface morphology is probed by atomic force microscopy. The micellar adsorption is described by stretched-exponential kinetics, and the micellar layer morphology shows that the micelles do not lose their integrity upon adsorption. The complexation of lysozyme with the adsorbed micellar layers depends on the micelles arrangement and density in the underlying layer, and lysozyme follows the local morphology of the underlying roughness. When the micellar adsorbed amount is small, the layers show low capacity in protein complexation and low resistance in loading. When the micellar adsorbed amount is high, the situation is reversed. The adsorbed layers both with or without added protein are found to be irreversibly adsorbed on the Ag surface.
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Affiliation(s)
- Aristeidis Papagiannopoulos
- Theoretical and Physical Chemistry Institute , National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
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