1
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Eneh C, Nixon K, Lalwani SM, Sammalkorpi M, Batys P, Lutkenhaus JL. Solid-Liquid-Solution Phases in Poly(diallyldimethylammonium)/Poly(acrylic acid) Polyelectrolyte Complexes at Varying Temperatures. Macromolecules 2024; 57:2363-2375. [PMID: 38495383 PMCID: PMC10938883 DOI: 10.1021/acs.macromol.4c00258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 02/06/2024] [Indexed: 03/19/2024]
Abstract
The coacervation and complexation of oppositely charged polyelectrolytes are dependent on numerous environmental and preparatory factors, but temperature is often overlooked. Temperature effects remain unclear because the temperature dependence of both the dielectric constant and polymer-solvent interaction parameter can yield lower and/or upper critical solution phase behaviors for PECs. Further, secondary interactions, such as hydrogen bonding, can affect the temperature response of a PEC. That is, mixtures of oppositely charged polyelectrolytes can exhibit phase separation upon lowering and/or increasing the mixture's temperature. Here, the phase behavior of poly(diallylmethylammonium)/poly(acrylic acid) (PDADMA/PAA) complexes under varying KBr ionic strengths, mixing ratios, and temperatures at a fixed pH (in which PAA hydrogen bonding can occur) is examined. At room temperature, the PDADMA/PAA PECs exhibit four different phase states: precipitate, coexisting precipitate and coacervate, solid-like gel, and coacervate. Variable-temperature optical microscopy reveals the upper critical solution temperature (UCST) at which each phase transitioned to a solution state. Interestingly, the UCST value is highly dependent on the original phase of the PEC, in which solid-like precipitates exhibit higher UCST values. Large-scale all-atom molecular dynamics (MD) simulations support that precipitates exhibit kinetic trapping, which may contribute to the higher UCST values observed in the experiment. Taken together, this study highlights the significance of temperature on the phase behavior of PECs, which may play a larger role in stimuli-responsive materials, membraneless organelles, and separations applications.
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Affiliation(s)
- Chikaodinaka
I. Eneh
- Artie
McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Kevin Nixon
- Artie
McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Suvesh Manoj Lalwani
- Artie
McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Maria Sammalkorpi
- Department
of Chemistry and Materials Science, Aalto
University, P.O. Box 16100, Aalto 00076, Finland
- Department
of Bioproducts and Biosystems, Aalto University, P.O. Box 16100, Aalto 00076, Finland
- Academy
of Finland Center of Excellence in Life-Inspired Hybrid Materials
(LIBER), Aalto University, P.O. Box 16100, Aalto 00076, Finland
| | - Piotr Batys
- Jerzy
Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, Krakow 30-239, Poland
| | - Jodie L. Lutkenhaus
- Artie
McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department
of Materials Science and Engineering, Texas
A&M University, College Station, Texas 77840, United States
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2
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Xu L, He L, Li Y, Cai T, Zhang J, Chu Z, Shen X, Cai R, Shi H, Zhu C. Stimuli-triggered multilayer films in response to temperature and ionic strength changes for controlled favipiravir drug release. Biomed Mater 2024; 19:035004. [PMID: 38364282 DOI: 10.1088/1748-605x/ad2a3b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 02/16/2024] [Indexed: 02/18/2024]
Abstract
The block copolymer micelles and natural biopolymers were utilized to form layer-by-layer (LbL) films via electrostatic interaction, which were able to effectively load and controllably release favipiravir, a potential drug for the treatment of coronavirus epidemic. The LbL films demonstrated reversible swelling/shrinking behavior along with the manipulation of temperature, which could also maintain the integrity in the structure and the morphology. Due to dehydration of environmentally responsive building blocks, the drug release rate from the films was decelerated by elevating environmental temperature and ionic strength. In addition, the pulsed release of favipiravir was observed from the multilayer films under the trigger of temperature, which ensured the precise control in the content of the therapeutic reagents at a desired time point. The nanoparticle-based LbL films could be used for on-demandin vitrorelease of chemotherapeutic reagents.
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Affiliation(s)
- Li Xu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Lang He
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Yinzhao Li
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Tingwei Cai
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Jianhua Zhang
- N.O.D topia (GuangZhou) Biotechnology Co., Ltd, Guangzhou, Guangdong 510599, People's Republic of China
| | - Zihan Chu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Xiaochen Shen
- China Tobacco Jiangsu Industrial Co., Ltd, Nanjing, Jiangsu 210019, People's Republic of China
| | - Raymond Cai
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Haifeng Shi
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Chunyin Zhu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
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3
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Aliakseyeu A, Shah PP, Ankner JF, Sukhishvili SA. Salt-Induced Diffusion of Star and Linear Polyelectrolytes within Multilayer Films. Macromolecules 2023; 56:5434-5445. [PMID: 38357536 PMCID: PMC10863069 DOI: 10.1021/acs.macromol.3c00777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 06/19/2023] [Indexed: 02/16/2024]
Abstract
This study explores the effect of salt on the diffusivity of polyelectrolytes of varied molecular architecture in layer-by-layer (LbL) films in directions parallel and perpendicular to the substrate using fluorescence recovery after photobleaching (FRAP) and neutron reflectivity (NR) techniques, respectively. A family of linear, 4-arm, 6-arm, and 8-arm poly(methacrylic acids) (LPMAA, 4PMAA, 6PMAA, and 8PMAA, respectively) of matched molecular weights were synthesized using atom transfer radical polymerization and assembled with a linear polycation, poly[2-(trimethylammonium)ethyl methacrylate chloride] (QPC). NR studies involving deuterated QPC revealed ∼10-fold higher polycation mobility for the 8PMAA/QPC system compared to all-linear LbL films upon exposure to 0.25 M NaCl solutions at pH 6. FRAP experiments showed, however, that lateral diffusion of star PMAAs was lower than LPMAA at NaCl concentrations below ∼0.22 M NaCl, with a crossover to higher mobility of star polymers in more concentrated salt solutions. The stronger response of diffusion of star PMAA to salt is discussed in the context of several theories previously suggested for diffusivity of polyelectrolyte chains in multilayer films and coacervates.
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Affiliation(s)
- Aliaksei Aliakseyeu
- Department
of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Parin Purvin Shah
- Department
of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - John F. Ankner
- Spallation
Neutron Source Second Target Station Project, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Svetlana A. Sukhishvili
- Department
of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
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4
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Aliakseyeu A, Ankner JF, Sukhishvili SA. Impact of Star Polyacid Branching on Polymer Diffusion within Multilayer Films. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01104] [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)
- Aliaksei Aliakseyeu
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - John F. Ankner
- Spallation Neutron Source Second Target Station Project, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Svetlana A. Sukhishvili
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
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5
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Xu L, Chu Z, Zhang J, Cai T, Zhang X, Li Y, Wang H, Shen X, Cai R, Shi H, Zhu C, Pan J, Pan D. Steric Effects in the Deposition Mode and Drug-Delivering Efficiency of Nanocapsule-Based Multilayer Films. ACS OMEGA 2022; 7:30321-30332. [PMID: 36061696 PMCID: PMC9434745 DOI: 10.1021/acsomega.2c03591] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 08/03/2022] [Indexed: 05/10/2023]
Abstract
Using surface-initiated atom transfer radical polymerization (ATRP), block polymers with a series of quaternization degrees were coated on the surface of silica nanocapsules (SNCs) by the "grafting-from" technique. Molnupiravir, an antiviral medicine urgently approved for the treatment of SARS-CoV-2, was encapsulated in polymer-coated SNCs and further incorporated into well-defined films with polystyrene sulfonate (PSS) homopolymers by layer-by-layer (LBL) self-assembly via electrostatic interactions. We investigated the impact of the quaternization degree of the polymers and steric hindrance of functional groups on the growth mode, swelling/deswelling transition, and drug-delivering efficiency of the obtained LBL films. The SNCs were derived from coronas of parent block polymers of matched molecular weights-poly(N-isopropylacrylamide)-block-poly(N,N-dimethylaminoethyl methacrylate) (PNIPAM-b-PDMAEMA)-by quaternization with methyl sulfate. As revealed by the data results, SNCs with coronas with higher quaternization degrees resulted in a larger layering distance of the film structure because of weaker ionic pairing (due to the presence of a bulky methyl spacer) between SNCs and PSS. Interestingly, when comparing the drug release profile of the encapsulated drugs from SNC-based films, the release rate was slower in the case of capsule coronas with higher quaternization degrees because of the larger diffusion distance of the encapsulated drugs and stronger hydrophobic-hydrophobic interactions between SNCs and drug molecules.
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Affiliation(s)
- Li Xu
- Institute
of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Zihan Chu
- Institute
of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Jianhua Zhang
- N.O.D
Topia (GuangZhou) Biotechnology Co., Ltd., Guangzhou, Guangdong 510599, China
| | - Tingwei Cai
- Guangdong
Jiabo Pharmaceutical Co., Qingyuan, Guangdong 511517, China
| | - Xingxing Zhang
- Institute
of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yinzhao Li
- Institute
of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Hailong Wang
- Institute
of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xiaochen Shen
- China
Tobacco Jiangsu Industrial Co., Ltd., Nanjing, Jiangsu 210023, China
| | - Raymond Cai
- Institute
of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Haifeng Shi
- Institute
of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Chunyin Zhu
- Institute
of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Jia Pan
- Novo
Nordisk Research Center—Indianapolis, Inc., Indianapolis, Indiana 46241, United States
| | - Donghui Pan
- Jiangsu
Institute of Nuclear Medicine, Wuxi, Jiangsu 214063, China
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6
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Low-Intensity Light-Responsive Anticancer Activity of Platinum(II) Complex Nanocolloids on 2D and 3D In Vitro Cancer Cell Model. Bioinorg Chem Appl 2022; 2022:9571217. [PMID: 35502219 PMCID: PMC9056248 DOI: 10.1155/2022/9571217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 03/14/2022] [Accepted: 03/25/2022] [Indexed: 11/17/2022] Open
Abstract
This study aimed to evaluate the therapeutic efficacy of low-intensity visible light responsive nanocolloids of a Pt-based drug using a 2D and three-dimensional (3D) in vitro cancer cell model. Biocompatible and biodegradable polymeric nanocolloids, obtained using the ultrasonication method coupled with Layer by Layer technology, were characterized in terms of size (100 ± 20 nm), physical stability, drug loading (78%), and photoactivation through spectroscopy studies. The in vitro biological effects were assessed in terms of efficacy, apoptosis induction, and DNA-Pt adducts formation. Biological experiments were performed both in dark and under visible light irradiation conditions, exploiting the complex photochemical properties. The light-stimuli responsive nanoformulation gave a significant enhancement in drug bioactivity. This allowed us to achieve satisfying results by using nanomolar drug concentration (50 nM), which was ineffective in darkness condition. Furthermore, our nanocolloids were validated in 3D in vitro spheroids using confocal microscopy and cytofluorimetric assay to compare their behavior on culture in 2D monolayers. The obtained results confirmed that these nanocolloids are promising tools for delivering Pt-based drugs.
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7
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Xi YR, Chen XK, Wu YS, Xue YK, Sun WC, Chen XM, Liu XR, Wang YT, Tang GM. The hydroxylic position mediated the luminescent properties based on 4-amino-4H-1,2,4-triazole: Syntheses, crystal structures and Hirshfeld analyses. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122300] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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8
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Polyelectrolyte Multilayers: An Overview on Fabrication, Properties, and Biomedical and Environmental Applications. MATERIALS 2021; 14:ma14154152. [PMID: 34361346 PMCID: PMC8348132 DOI: 10.3390/ma14154152] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/22/2021] [Accepted: 07/23/2021] [Indexed: 12/11/2022]
Abstract
Polyelectrolyte multilayers are versatile materials that are used in a large number of domains, including biomedical and environmental applications. The fabrication of polyelectrolyte multilayers using the layer-by-layer technique is one of the simplest methods to obtain composite functional materials. The properties of the final material can be easily tuned by changing the deposition conditions and the used building blocks. This review presents the main characteristics of polyelectrolyte multilayers, the fabrication methods currently used, and the factors influencing the layer-by-layer assembly of polyelectrolytes. The last section of this paper presents some of the most important applications of polyelectrolyte multilayers, with a special focus on biomedical and environmental applications.
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9
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Polyelectrolyte Multilayers on Soft Colloidal Nanosurfaces: A New Life for the Layer-By-Layer Method. Polymers (Basel) 2021; 13:polym13081221. [PMID: 33918844 PMCID: PMC8069484 DOI: 10.3390/polym13081221] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/04/2021] [Accepted: 04/05/2021] [Indexed: 02/07/2023] Open
Abstract
The Layer-by-Layer (LbL) method is a well-established method for the assembly of nanomaterials with controlled structure and functionality through the alternate deposition onto a template of two mutual interacting molecules, e.g., polyelectrolytes bearing opposite charge. The current development of this methodology has allowed the fabrication of a broad range of systems by assembling different types of molecules onto substrates with different chemical nature, size, or shape, resulting in numerous applications for LbL systems. In particular, the use of soft colloidal nanosurfaces, including nanogels, vesicles, liposomes, micelles, and emulsion droplets as a template for the assembly of LbL materials has undergone a significant growth in recent years due to their potential impact on the design of platforms for the encapsulation and controlled release of active molecules. This review proposes an analysis of some of the current trends on the fabrication of LbL materials using soft colloidal nanosurfaces, including liposomes, emulsion droplets, or even cells, as templates. Furthermore, some fundamental aspects related to deposition methodologies commonly used for fabricating LbL materials on colloidal templates together with the most fundamental physicochemical aspects involved in the assembly of LbL materials will also be discussed.
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10
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Escobar A, Muzzio N, Moya SE. Antibacterial Layer-by-Layer Coatings for Medical Implants. Pharmaceutics 2020; 13:E16. [PMID: 33374184 PMCID: PMC7824561 DOI: 10.3390/pharmaceutics13010016] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/17/2020] [Accepted: 12/21/2020] [Indexed: 11/18/2022] Open
Abstract
The widespread occurrence of nosocomial infections and the emergence of new bacterial strands calls for the development of antibacterial coatings with localized antibacterial action that are capable of facing the challenges posed by increasing bacterial resistance to antibiotics. The Layer-by-Layer (LbL) technique, based on the alternating assembly of oppositely charged polyelectrolytes, can be applied for the non-covalent modification of multiple substrates, including medical implants. Polyelectrolyte multilayers fabricated by the LbL technique have been extensively researched for the development of antibacterial coatings as they can be loaded with antibiotics, antibacterial peptides, nanoparticles with bactericide action, in addition to being capable of restricting adhesion of bacteria to surfaces. In this review, the different approaches that apply LbL for antibacterial coatings, emphasizing those that can be applied for implant modification are presented.
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Affiliation(s)
- Ane Escobar
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182 C, 20014 Donostia-San Sebastian, Spain;
| | - Nicolas Muzzio
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USA;
| | - Sergio Enrique Moya
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182 C, 20014 Donostia-San Sebastian, Spain;
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11
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Zhao J. Studying the physics of charged macromolecules by single molecule fluorescence spectroscopy. J Chem Phys 2020; 153:170903. [PMID: 33167636 DOI: 10.1063/5.0024324] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
It is well documented that conventional methods such as dynamic light scattering have encountered difficulties in characterizing charged macromolecules and, therefore, it is desirable that new methods and techniques are introduced. With the ultra-high sensitivity, single molecule fluorescence spectroscopy has successfully lowered the detection limit considerably and enabled measurement under extreme dilution conditions-around the concentration of 10-9M-at which the effect of inter-chain electrostatic repulsion is suppressed. Furthermore, the excellent spatial and temporal resolution as well as the capacity of molecular recognition of these methods help in obtaining rich information of charged macromolecules. This paper summarizes the applications of single molecule fluorescence spectroscopy, especially fluorescence correlation spectroscopy and photon counting histogram, in the studies on charged macromolecules in aqueous solutions and plenty of new information has been revealed on the molecular conformation, counterion distribution, and a few important governing factors. The powerfulness and effectiveness of single molecule fluorescence spectroscopy make it promising in the investigations of charged macromolecules.
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Affiliation(s)
- Jiang Zhao
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China and The University of Chinese Academy of Sciences, Beijing 100049, China
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12
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Manoj Lalwani S, Eneh CI, Lutkenhaus JL. Emerging trends in the dynamics of polyelectrolyte complexes. Phys Chem Chem Phys 2020; 22:24157-24177. [PMID: 33094301 DOI: 10.1039/d0cp03696j] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Polyelectrolyte complexes (PECs) are highly tunable materials that result from the phase separation that occurs upon mixing oppositely charged polymers. Over the years, they have gained interest due to their broad range of applications such as drug delivery systems, protective coatings, food packaging, and surface adhesives. In this review, we summarize the structure, phase transitions, chain dynamics, and rheological and thermal properties of PECs. Although most literature focuses upon the thermodynamics and application of PECs, this review highlights the fundamental role of salt and water on mechanical and thermal properties impacting the PEC's dynamics. A special focus is placed upon experimental results and techniques. Specifically, the review examines phase behaviour and salt partitioning in PECs, as well as different techniques used to measure diffusion coefficients, relaxation times, various superpositioning principles, glass transitions, and water microenvironments in PECs. This review concludes with future areas of opportunity in fundamental studies and best practices in reporting.
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Affiliation(s)
- Suvesh Manoj Lalwani
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77840, USA.
| | - Chikaodinaka I Eneh
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77840, USA.
| | - Jodie L Lutkenhaus
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77840, USA. and Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77840, USA
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13
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Davletshina R, Ivanov A, Shamagsumova R, Evtugyn V, Evtugyn G. Electrochemical Biosensor Based on Polyelectrolyte Complexes with Dendrimer for the Determination of Reversible Inhibitors of Acetylcholinesterase. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1821700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- R. Davletshina
- Analytical Chemistry Department, Kazan Federal University, Kazan, Russian Federation
| | - A. Ivanov
- Analytical Chemistry Department, Kazan Federal University, Kazan, Russian Federation
| | - R. Shamagsumova
- Analytical Chemistry Department, Kazan Federal University, Kazan, Russian Federation
| | - V. Evtugyn
- Interdisciplinary Centre of Analytical Microscopy, Kazan Federal University, Kazan, Russian Federation
| | - G. Evtugyn
- Analytical Chemistry Department, Kazan Federal University, Kazan, Russian Federation
- Analytical Chemistry Department, Chemical Technology Institute of Ural Federal University, Ekaterinburg, Russian Federation
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14
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Campbell J, Vikulina AS. Layer-By-Layer Assemblies of Biopolymers: Build-Up, Mechanical Stability and Molecular Dynamics. Polymers (Basel) 2020; 12:E1949. [PMID: 32872246 PMCID: PMC7564420 DOI: 10.3390/polym12091949] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/21/2020] [Accepted: 08/24/2020] [Indexed: 12/18/2022] Open
Abstract
Rapid development of versatile layer-by-layer technology has resulted in important breakthroughs in the understanding of the nature of molecular interactions in multilayer assemblies made of polyelectrolytes. Nowadays, polyelectrolyte multilayers (PEM) are considered to be non-equilibrium and highly dynamic structures. High interest in biomedical applications of PEMs has attracted attention to PEMs made of biopolymers. Recent studies suggest that biopolymer dynamics determines the fate and the properties of such PEMs; however, deciphering, predicting and controlling the dynamics of polymers remains a challenge. This review brings together the up-to-date knowledge of the role of molecular dynamics in multilayers assembled from biopolymers. We discuss how molecular dynamics determines the properties of these PEMs from the nano to the macro scale, focusing on its role in PEM formation and non-enzymatic degradation. We summarize the factors allowing the control of molecular dynamics within PEMs, and therefore to tailor polymer multilayers on demand.
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Affiliation(s)
- Jack Campbell
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK;
| | - Anna S. Vikulina
- Fraunhofer Institute for Cell Therapy and Immunology, Branch Bioanalytics and Bioprocesses, Am Mühlenberg 13, 14476 Potsdam-Golm, Germany
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15
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Guzmán E, Rubio RG, Ortega F. A closer physico-chemical look to the Layer-by-Layer electrostatic self-assembly of polyelectrolyte multilayers. Adv Colloid Interface Sci 2020; 282:102197. [PMID: 32579951 DOI: 10.1016/j.cis.2020.102197] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/06/2020] [Accepted: 06/08/2020] [Indexed: 01/08/2023]
Abstract
The fabrication of polyelectrolyte multilayer films (PEMs) using the Layer-by-Layer (LbL) method is one of the most versatile approaches for manufacturing functional surfaces. This is the result of the possibility to control the assembly process of the LbL films almost at will, by changing the nature of the assembled materials (building blocks), the assembly conditions (pH, ionic strength, temperature, etc.) or even by changing some other operational parameters which may impact in the structure and physico-chemical properties of the obtained multi-layered films. Therefore, the understanding of the impact of the above mentioned parameters on the assembly process of LbL materials plays a critical role in the potential use of the LbL method for the fabrication of new functional materials with technological interest. This review tries to provide a broad physico-chemical perspective to the study of the fabrication process of PEMs by the LbL method, which allows one to take advantage of the many possibilities offered for this approach on the fabrication of new functional nanomaterials.
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16
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Hlushko R, Ankner JF, Sukhishvili SA. Layer-by-Layer Hydrogen-Bonded Antioxidant Films of Linear Synthetic Polyphenols. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02512] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Raman Hlushko
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - John F. Ankner
- Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Svetlana A. Sukhishvili
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
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17
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Xu L, Chu Z, Wang H, Cai L, Tu Z, Liu H, Zhu C, Shi H, Pan D, Pan J, Fei X. Electrostatically Assembled Multilayered Films of Biopolymer Enhanced Nanocapsules for on-Demand Drug Release. ACS APPLIED BIO MATERIALS 2019; 2:3429-3438. [DOI: 10.1021/acsabm.9b00381] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Li Xu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Zihan Chu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Hailong Wang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Lawrence Cai
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Zhigang Tu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Hanqing Liu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Chunyin Zhu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Haifeng Shi
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Donghui Pan
- Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu 214063, China
| | - Jia Pan
- Novo Nordisk Research Center−Indianapolis, Inc., Indianapolis, Indiana 46241, United States
| | - Xiang Fei
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
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18
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Xie L, Zou Y, Carroll S, Muniz M, Mao G. Layer-By-Layer Film Engineering for Sequential Gene Delivery. Methods Mol Biol 2019; 1943:161-176. [PMID: 30838616 DOI: 10.1007/978-1-4939-9092-4_11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Layer-by-layer (LbL) films are assembled with poly(amido amine)s (PAAs), a type of polycations containing bioreducible disulfide bond, and DNA plasmids to enable LbL film degradation in physiologic conditions by reacting with glutathione or redox-active membrane proteins. The interior layer structure of the LbL films during assembly and disassembly is studied by atomic force microscopy (AFM), ellipsometry, dynamic light scattering (DLS), and fluorescence spectroscopy. Insertion of barrier layers in bioreducible LbL films is necessary to stabilize the interior layer structure and slow down the film degradation rate to achieve sequential gene delivery. Localized gene delivery from the LbL films is demonstrated using human embryonic kidney 293 (HEK 293) cells.
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Affiliation(s)
- Lingxiao Xie
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Yi Zou
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Sean Carroll
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
| | - Maria Muniz
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
| | - Guangzhao Mao
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA.
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19
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Lappan U, Rau C, Naas C, Scheler U. Odd–Even Effect on Rotational Dynamics of Spin-Labeled Polyacid Chain Segments in Polyelectrolyte Multilayers. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00101] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Uwe Lappan
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, Germany
| | - Cindy Rau
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, Germany
| | - Carolin Naas
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, Germany
| | - Ulrich Scheler
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, Germany
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20
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Chen X, Guo Q, He M, Liu Y, Zhao Y. Layer-by-layer assembly of polymeric complexes: Effect of storing time on the complexes and film structure. POLYM ENG SCI 2018. [DOI: 10.1002/pen.24999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaoling Chen
- College of Chemistry and Chemical Engineering; Taiyuan University of Technology; Taiyuan Shanxi China
| | - Qiaojing Guo
- College of Chemistry and Chemical Engineering; Taiyuan University of Technology; Taiyuan Shanxi China
| | - Miaomiao He
- College of Chemistry and Chemical Engineering; Taiyuan University of Technology; Taiyuan Shanxi China
| | - Yongmei Liu
- College of Chemistry and Chemical Engineering; Taiyuan University of Technology; Taiyuan Shanxi China
| | - Yansheng Zhao
- College of Chemistry and Chemical Engineering; Taiyuan University of Technology; Taiyuan Shanxi China
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21
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Szweda R, Tschopp M, Felix O, Decher G, Lutz JF. Sequences of Sequences: Spatial Organization of Coded Matter through Layer-by-Layer Assembly of Digital Polymers. Angew Chem Int Ed Engl 2018; 57:15817-15821. [DOI: 10.1002/anie.201810559] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/04/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Roza Szweda
- Université de Strasbourg, CNRS; Institut Charles Sadron UPR22; 23 rue du Loess 67034 Strasbourg Cedex 2 France
| | - Michel Tschopp
- Université de Strasbourg, CNRS; Institut Charles Sadron UPR22; 23 rue du Loess 67034 Strasbourg Cedex 2 France
| | - Olivier Felix
- Université de Strasbourg, CNRS; Institut Charles Sadron UPR22; 23 rue du Loess 67034 Strasbourg Cedex 2 France
| | - Gero Decher
- Université de Strasbourg, CNRS; Institut Charles Sadron UPR22; 23 rue du Loess 67034 Strasbourg Cedex 2 France
| | - Jean-François Lutz
- Université de Strasbourg, CNRS; Institut Charles Sadron UPR22; 23 rue du Loess 67034 Strasbourg Cedex 2 France
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22
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Szweda R, Tschopp M, Felix O, Decher G, Lutz JF. Sequences of Sequences: Spatial Organization of Coded Matter through Layer-by-Layer Assembly of Digital Polymers. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810559] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Roza Szweda
- Université de Strasbourg, CNRS; Institut Charles Sadron UPR22; 23 rue du Loess 67034 Strasbourg Cedex 2 France
| | - Michel Tschopp
- Université de Strasbourg, CNRS; Institut Charles Sadron UPR22; 23 rue du Loess 67034 Strasbourg Cedex 2 France
| | - Olivier Felix
- Université de Strasbourg, CNRS; Institut Charles Sadron UPR22; 23 rue du Loess 67034 Strasbourg Cedex 2 France
| | - Gero Decher
- Université de Strasbourg, CNRS; Institut Charles Sadron UPR22; 23 rue du Loess 67034 Strasbourg Cedex 2 France
| | - Jean-François Lutz
- Université de Strasbourg, CNRS; Institut Charles Sadron UPR22; 23 rue du Loess 67034 Strasbourg Cedex 2 France
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23
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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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24
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Selin V, Albright V, Ankner JF, Marin A, Andrianov AK, Sukhishvili SA. Biocompatible Nanocoatings of Fluorinated Polyphosphazenes through Aqueous Assembly. ACS APPLIED MATERIALS & INTERFACES 2018; 10:9756-9764. [PMID: 29505245 DOI: 10.1021/acsami.8b02072] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nonionic fluorinated polyphosphazenes, such as poly[bis(trifluoroethoxy)phosphazene] (PTFEP), display superb biocompatibility, yet their deposition to surfaces has been limited to solution casting from organic solvents or thermal molding. Herein, hydrophobic coatings of fluorinated polyphosphazenes are demonstrated through controlled deposition of ionic fluorinated polyphosphazenes (iFPs) from aqueous solutions using the layer-by-layer (LbL) technique. Specifically, the assemblies included poly[(carboxylatophenoxy)(trifluoroethoxy)phosphazenes] with varied content of fluorine atoms as iFPs (or poly[bis(carboxyphenoxy)phosphazene] (PCPP) as a control nonfluorinated polyphosphazene) and a variety of polycations. Hydrophobic interactions largely contributed to the formation of LbL films of iFPs with polycations, leading to linear growth and extremely low water uptake. Hydrophobicity-enhanced ionic pairing within iFP/BPEI assemblies gave rise to large-amplitude oscillations in surface wettability as a function of capping layer, which were the largest for the most fluorinated iFP, while control PCPP/polycation systems remained hydrophilic regardless of the film top layer. Neutron reflectometry (NR) studies indicated superior layering and persistence of such layering in salt solution for iFP/BPEI films as compared to control PCPP/polycation systems. Hydrophobicity of iFP-capped LbL coatings could be further enhanced by using a highly porous polyester surgical felt rather than planar substrates for film deposition. Importantly, iFP/polycation coatings displayed biocompatibility which was similar to or superior to that of solution-cast coatings of a clinically validated material (PTFEP), as demonstrated by the hemolysis of the whole blood and protein adsorption studies.
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Affiliation(s)
- Victor Selin
- Department of Materials Science & Engineering , Texas A&M University , College Station , Texas 77843 , United States
| | - Victoria Albright
- Department of Materials Science & Engineering , Texas A&M University , College Station , Texas 77843 , United States
| | - John F Ankner
- Spallation Neutron Source , Oak Ridge National Laboratory , Oak Ridge , Tennessee 37831 , United States
| | - Alexander Marin
- Institute for Bioscience and Biotechnology Research , University of Maryland , Rockville , Maryland 20850 , United States
| | - Alexander K Andrianov
- Institute for Bioscience and Biotechnology Research , University of Maryland , Rockville , Maryland 20850 , United States
| | - Svetlana A Sukhishvili
- Department of Materials Science & Engineering , Texas A&M University , College Station , Texas 77843 , United States
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25
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Ghoussoub YE, Zerball M, Fares HM, Ankner JF, von Klitzing R, Schlenoff JB. Ion distribution in dry polyelectrolyte multilayers: a neutron reflectometry study. SOFT MATTER 2018; 14:1699-1708. [PMID: 29424853 DOI: 10.1039/c7sm02461d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Ultrathin films of complexed polycation poly(diallyldimethylammonium), PDADMA, and polyanion poly(styrenesulfonate), PSS, were prepared on silicon wafers using the layer-by-layer adsorption technique. When terminated with PDADMA, all films had excess PDADMA, which was balanced by counterions. Neutron reflectivity of these as-made multilayers was compared with measurements on multilayers which had been further processed to ensure 1 : 1 stoichiometry of PDADMA and PSS. The compositions of all films, including polymers and counterions, were determined experimentally rather than by fitting, reducing the number of fit parameters required to model the reflectivity. For each sample, acetate, either protiated, CH3COO-, or deuterated, CD3COO-, served as the counterion. All films were maintained dry under vacuum. Scattering length density profiles were constrained to fit reflectivity data from samples having either counterion. The best fits were obtained with uniform counterion concentrations, even for stoichiometric samples that had been exposed to PDADMA for ca. 5 minutes, showing that surprisingly fast and complete transport of excess cationic charge occurs throughout the multilayer during its construction.
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Affiliation(s)
- Yara E Ghoussoub
- Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, Florida 32306-4390, USA.
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26
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Rehan K, Su C, Nie J, Xu J, Yang S. Chain diffusion and exchange during build-up of hydrogen-bonded polymer complex film. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.12.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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27
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Selin V, Ankner JF, Sukhishvili SA. Ionically Paired Layer-by-Layer Hydrogels: Water and Polyelectrolyte Uptake Controlled by Deposition Time. Gels 2018; 4:E7. [PMID: 30674783 PMCID: PMC6321383 DOI: 10.3390/gels4010007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 12/28/2017] [Accepted: 01/08/2018] [Indexed: 01/18/2023] Open
Abstract
Despite intense recent interest in weakly bound nonlinear ("exponential") multilayers, the underlying structure-property relationships of these films are still poorly understood. This study explores the effect of time used for deposition of individual layers of nonlinearly growing layer-by-layer (LbL) films composed of poly(methacrylic acid) (PMAA) and quaternized poly-2-(dimethylamino)ethyl methacrylate (QPC) on film internal structure, swelling, and stability in salt solution, as well as the rate of penetration of invading polyelectrolyte chains. Thicknesses of dry and swollen films were measured by spectroscopic ellipsometry, film internal structure-by neutron reflectometry (NR), and degree of PMAA ionization-by Fourier-transform infrared spectroscopy (FTIR). The results suggest that longer deposition times resulted in thicker films with higher degrees of swelling (up to swelling ratio as high as 4 compared to dry film thickness) and stronger film intermixing. The stronger intermixed films were more swollen in water, exhibited lower stability in salt solutions, and supported a faster penetration rate of invading polyelectrolyte chains. These results can be useful in designing polyelectrolyte nanoassemblies for biomedical applications, such as drug delivery coatings for medical implants or tissue engineering matrices.
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Affiliation(s)
- Victor Selin
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77843, USA.
| | - John F Ankner
- Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
| | - Svetlana A Sukhishvili
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77843, USA.
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28
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Fares HM, Schlenoff JB. Diffusion of Sites versus Polymers in Polyelectrolyte Complexes and Multilayers. J Am Chem Soc 2017; 139:14656-14667. [PMID: 28981268 DOI: 10.1021/jacs.7b07905] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
It has long been assumed that the spontaneous formation of materials such as complexes and multilayers from charged polymers depends on (inter)diffusion of these polyelectrolytes. Here, we separately examine the mass transport of polymer molecules and extrinsic sites-charged polyelectrolyte repeat units balanced by counterions-within thin films of polyelectrolyte complex, PEC, using sensitive isotopic labeling techniques. The apparent diffusion coefficients of these sites within PEC films of poly(diallyldimethylammonium), PDADMA, and poly(styrenesulfonate), PSS, are at least 2 orders of magnitude faster than the diffusion of polyelectrolytes themselves. This is because site diffusion requires only local rearrangements of polyelectrolyte repeat units, placing far fewer kinetic limitations on the assembly of polyelectrolyte complexes in all of their forms. Site diffusion strongly depends on the salt concentration (ionic strength) of the environment, and diffusion of PDADMA sites is faster than that of PSS sites, accounting for the asymmetric nature of multilayer growth. Site diffusion is responsible for multilayer growth in the linear and into the exponential regimes, which explains how PDADMA can mysteriously "pass through" layers of PSS. Using quantitative relationships between site diffusion coefficient and salt concentration, conditions were identified that allowed the diffusion length to always exceed the film thickness, leading to full exponential growth over 3 orders of magnitude thickness. Both site and polymer diffusion were independent of molecular weight, suggesting that ion pairing density is a limiting factor. Polyelectrolyte complexes are examples of a broader class of dynamic bulk polymeric materials that (self-) assemble via the transport of cross-links or defects rather than actual molecules.
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Affiliation(s)
- Hadi M Fares
- Department of Chemistry and Biochemistry, The Florida State University , Tallahassee, Florida 32306-4390, United States
| | - Joseph B Schlenoff
- Department of Chemistry and Biochemistry, The Florida State University , Tallahassee, Florida 32306-4390, United States
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29
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Selin V, Ankner JF, Sukhishvili SA. Nonlinear Layer-by-Layer Films: Effects of Chain Diffusivity on Film Structure and Swelling. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01218] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Victor Selin
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - John F. Ankner
- Spallation
Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Svetlana A. Sukhishvili
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
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30
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Affiliation(s)
- Hadi M. Fares
- Department of Chemistry and
Biochemistry, The Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Joseph B. Schlenoff
- Department of Chemistry and
Biochemistry, The Florida State University, Tallahassee, Florida 32306-4390, United States
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31
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Sadman K, Wang Q, Chen SH, Delgado DE, Shull KR. pH-Controlled Electrochemical Deposition of Polyelectrolyte Complex Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:1834-1844. [PMID: 28142239 DOI: 10.1021/acs.langmuir.6b04491] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Polyelectrolyte complex (PEC) films made from oppositely charged polymer chains have applications as drug-delivery vehicles, separation membranes, and biocompatible coatings. Conventional layer-by-layer techniques for polyelectrolyte coatings are low-throughput and multistep processes that are quite slow for building films on the order of micrometers. In this work, PEC films are electrochemically deposited using a rapid one-pot method, yielding thick (1 μm) films within short experimental time scales (5 min). This rapid electrodeposition is achieved by exploiting the reduction of hydrogen peroxide at mild electrode potentials that avoid water electrolysis yet trigger the pH-responsive self-assembly of a PEC film composed of poly(acrylic) acid and poly(allylamine) HCl. In situ rheology using an electrochemical quartz crystal microbalance quantified the shear modulus-density product of the deposited layer to be on the order of 107 Pa g/cm3 at a frequency of 15 MHz, with a viscoelastic phase angle of approximately 50°. This electrodeposition scheme furthers the development of PEC coatings for more high-throughput applications, where a fast and efficient single-step approach would be desirable for obtaining coatings.
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Affiliation(s)
- Kazi Sadman
- Department of Materials Science & Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Qifeng Wang
- Department of Materials Science & Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Shawn H Chen
- Department of Materials Science & Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - David E Delgado
- Department of Materials Science & Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Kenneth R Shull
- Department of Materials Science & Engineering, Northwestern University , Evanston, Illinois 60208, United States
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32
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Affiliation(s)
- Jingcheng Fu
- Department of Chemistry and
Biochemistry, The Florida State University, Tallahassee, Florida 32306, United States
| | - Hadi M. Fares
- Department of Chemistry and
Biochemistry, The Florida State University, Tallahassee, Florida 32306, United States
| | - Joseph B. Schlenoff
- Department of Chemistry and
Biochemistry, The Florida State University, Tallahassee, Florida 32306, United States
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33
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grosse Austing J, Nunes Kirchner C, Komsiyska L, Wittstock G. Layer-by-layer modification of Nafion membranes for increased life-time and efficiency of vanadium/air redox flow batteries. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2016.03.005] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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34
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Abhyankar N, Ghoussoub YE, Wang Q, Dalal NS, Schlenoff JB. Ion Environments in Mn2+-Doped Polyelectrolyte Complexes: Dilute Magnetic Saloplastics. J Phys Chem B 2016; 120:6771-7. [DOI: 10.1021/acs.jpcb.6b02697] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nandita Abhyankar
- Department of Chemistry and
Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Yara E. Ghoussoub
- Department of Chemistry and
Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Qifeng Wang
- Department of Chemistry and
Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Naresh S. Dalal
- Department of Chemistry and
Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Joseph B. Schlenoff
- Department of Chemistry and
Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
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35
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Paßvogel M, Nestler P, Köhler R, Soltwedel O, Helm CA. Influence of Binary Polymer Mixtures on the Nonlinear Growth Regimes of Polyelectrolyte Multilayer Films. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b01674] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Malte Paßvogel
- Institut
für Physik, Ernst-Moritz-Arndt Universität, Felix-Hausdorff-Str. 6, D-17487 Greifswald, Germany
| | - Peter Nestler
- Institut
für Physik, Ernst-Moritz-Arndt Universität, Felix-Hausdorff-Str. 6, D-17487 Greifswald, Germany
| | - Ralf Köhler
- Institut
für Weiche Materie und funktionale Materialien, Helmholtz Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz
1, D-14109 Berlin, Germany
| | - Olaf Soltwedel
- Max Planck Institute
for Solid State Research, Heisenbergstr.
1, D-70569 Stuttgart, Germany
- Max Planck Society
Outstation at the Heinz-Maier-Leibnitz-Zentrum (MLZ), D-85747 Garching, Germany
| | - Christiane A. Helm
- Institut
für Physik, Ernst-Moritz-Arndt Universität, Felix-Hausdorff-Str. 6, D-17487 Greifswald, Germany
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36
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Kelly KD, Schlenoff JB. Spin-Coated Polyelectrolyte Coacervate Films. ACS APPLIED MATERIALS & INTERFACES 2015; 7:13980-6. [PMID: 26079535 DOI: 10.1021/acsami.5b02988] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Thin films of complexes made from oppositely charged polyelectrolytes have applications as supported membranes for separations, cell growth substrates, anticorrosion coatings, biocompatible coatings, and drug release media, among others. The relatively recent technique of layer-by-layer assembly reliably yields conformal coatings on substrates but is impractically slow for films with thickness greater than about 1 μm, even when accelerated many fold by spraying and/or spin assembly. In the present work, thin, uniform, smooth films of a polyelectrolyte complex (PEC) are rapidly made by spin-coating a polyelectrolyte coacervate, a strongly hydrated viscoelastic liquidlike form of PEC, on a substrate. While the apparatus used to deposit the PEC film is conventional, the behavior of the coacervate, especially the response to salt concentration, is highly nontraditional. After glassification by immersion in water, spun-on films may be released from their substrates to yield free-standing membranes of thickness in the micrometer range.
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Affiliation(s)
- Kristopher D Kelly
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Joseph B Schlenoff
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
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37
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Zhuk A, Selin V, Zhuk I, Belov B, Ankner JF, Sukhishvili SA. Chain conformation and dynamics in spin-assisted weak polyelectrolyte multilayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:3889-3896. [PMID: 25768113 DOI: 10.1021/acs.langmuir.5b00401] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report on the effect of the deposition technique on film layering, stability, and chain mobility in weak polyelectrolyte layer-by-layer (LbL) films. Ellipsometry and neutron reflectometry (NR) showed that shear forces arising during spin-assisted assembly lead to smaller amounts of adsorbed polyelectrolytes within LbL films, result in a higher degree of internal film order, and dramatically improve stability of assemblies in salt solutions as compared to dip-assisted LbL assemblies. The underlying flattening of polyelectrolyte chains in spin-assisted LbL films was also revealed as an increase in ionization degree of the assembled weak polyelectrolytes. As demonstrated by fluorescence recovery after photobleaching (FRAP), strong binding between spin-deposited polyelectrolytes results in a significant slowdown of chain diffusion in salt solutions as compared to dip-deposited films. Moreover, salt-induced chain intermixing in the direction perpendicular to the substrate is largely inhibited in spin-deposited films, resulting in only subdiffusional (<2 Å) chain displacements even after 200 h exposure to 1 M NaCl solutions. This persistence of polyelectrolyte layering has important ramifications for multistage drug delivery and optical applications of LbL assemblies.
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Affiliation(s)
- Aliaksandr Zhuk
- †Department of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Victor Selin
- †Department of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Iryna Zhuk
- †Department of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Benjamin Belov
- ‡Columbia High School, Maplewood, New Jersey 07040, United States
| | - John F Ankner
- §Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Svetlana A Sukhishvili
- †Department of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
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38
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Zhang Z, Liu J, Qi ZM, Lu DF. In situ study of self-assembled nanocomposite films by spectral SPR sensor. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 51:242-7. [PMID: 25842131 DOI: 10.1016/j.msec.2015.02.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 12/25/2014] [Accepted: 02/21/2015] [Indexed: 11/30/2022]
Abstract
Spectral surface plasmon resonance (SPR) sensor with a time-resolved charge-coupled device (CCD) detector is a powerful analytical tool for label-free detection of biomolecular interaction at the liquid/solid interface and for in situ study of molecular adsorption behavior. In this work, the layer-by-layer self-assembly processes for three nanocomposite films were monitored in real time using a broadband spectral SPR sensor with a large dynamic range. Kinetics studies suggest that cytochrome c (Cyt c) and deoxy ribonucleic acid (DNA) adsorptions obey the Langmuir-isotherm theory, while gold nanoparticle (GNP) adsorption follows the Diffusion-controlled model. Using poly(sodium 4-styrenesulfonate) (PSS) and poly(dimethyldiallylammonium chloride) (PDDA) as the positively charged agents, three kinds of multilayer films such as the PSS/Cyt c, GNP/Cyt c and PDDA/DNA binary nanocomposites were fabricated on the SPR chips by the electrostatic attraction based on self-assemble. The SPR response in terms of ΔλR was measured to linear increase with increasing the number of layers for a six-bilayer PSS/Cyt c nanocomposite film, indicating that every PSS/Cyt c layer has equal mass coverage. In contrast, the nonlinear dependences of ΔλR on the number of bilayers were observed for the GNP/Cyt c and PDDA/DNA nanocomposite multilayer films.
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Affiliation(s)
- Zhe Zhang
- Department of Biomedical Engineering, School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Jie Liu
- Department of Biomedical Engineering, School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China.
| | - Zhi-mei Qi
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
| | - Dan-feng Lu
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
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39
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Salehi A, Desai PS, Li J, Steele CA, Larson RG. Relationship between Polyelectrolyte Bulk Complexation and Kinetics of Their Layer-by-Layer Assembly. Macromolecules 2015. [DOI: 10.1021/ma502273a] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Ali Salehi
- Department of Chemical Engineering and ‡Department of Macromolecular Science & Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Priyanka S. Desai
- Department of Chemical Engineering and ‡Department of Macromolecular Science & Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jingyi Li
- Department of Chemical Engineering and ‡Department of Macromolecular Science & Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Caleb A. Steele
- Department of Chemical Engineering and ‡Department of Macromolecular Science & Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Ronald G. Larson
- Department of Chemical Engineering and ‡Department of Macromolecular Science & Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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40
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Maza E, Tuninetti JS, Politakos N, Knoll W, Moya S, Azzaroni O. pH-responsive ion transport in polyelectrolyte multilayers of poly(diallyldimethylammonium chloride) (PDADMAC) and poly(4-styrenesulfonic acid-co-maleic acid) (PSS-MA) bearing strong- and weak anionic groups. Phys Chem Chem Phys 2015; 17:29935-48. [DOI: 10.1039/c5cp03965g] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the creation of interfacial architectures displaying pH-dependent ionic transport properties which until now have not been observed in polyelectrolyte multilayers.
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Affiliation(s)
- Eliana Maza
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)
- Universidad Nacional de La Plata (UNLP)
- CONICET
- (1900) La Plata
- Argentina
| | - Jimena S. Tuninetti
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)
- Universidad Nacional de La Plata (UNLP)
- CONICET
- (1900) La Plata
- Argentina
| | | | | | - Sergio Moya
- Biosurfaces Unit
- CIC biomaGUNE
- 20009 San Sebastian
- Spain
| | - Omar Azzaroni
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)
- Universidad Nacional de La Plata (UNLP)
- CONICET
- (1900) La Plata
- Argentina
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41
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Pettersson T, Pendergraph SA, Utsel S, Marais A, Gustafsson E, Wågberg L. Robust and Tailored Wet Adhesion in Biopolymer Thin Films. Biomacromolecules 2014; 15:4420-8. [DOI: 10.1021/bm501202s] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Torbjörn Pettersson
- KTH Royal Institute of Technology, †Fibre and Polymer Technology and ‡Wallenberg Wood Science Centre, Teknikringen 56, SE-100 44 Stockholm, Sweden
| | - Samuel A. Pendergraph
- KTH Royal Institute of Technology, †Fibre and Polymer Technology and ‡Wallenberg Wood Science Centre, Teknikringen 56, SE-100 44 Stockholm, Sweden
| | - Simon Utsel
- KTH Royal Institute of Technology, †Fibre and Polymer Technology and ‡Wallenberg Wood Science Centre, Teknikringen 56, SE-100 44 Stockholm, Sweden
| | - Andrew Marais
- KTH Royal Institute of Technology, †Fibre and Polymer Technology and ‡Wallenberg Wood Science Centre, Teknikringen 56, SE-100 44 Stockholm, Sweden
| | - Emil Gustafsson
- KTH Royal Institute of Technology, †Fibre and Polymer Technology and ‡Wallenberg Wood Science Centre, Teknikringen 56, SE-100 44 Stockholm, Sweden
| | - Lars Wågberg
- KTH Royal Institute of Technology, †Fibre and Polymer Technology and ‡Wallenberg Wood Science Centre, Teknikringen 56, SE-100 44 Stockholm, Sweden
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42
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Zou Y, Xie L, Carroll S, Muniz M, Gibson H, Wei WZ, Liu H, Mao G. Layer-by-layer films with bioreducible and nonbioreducible polycations for sequential DNA release. Biomacromolecules 2014; 15:3965-75. [PMID: 25360688 DOI: 10.1021/bm5010433] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Layer-by-layer (LbL) films containing cationic polyelectrolytes and anionic bioactive molecules such as DNA are promising biomaterials for controlled and localized gene delivery for a number of biomedical applications including cancer DNA vaccine delivery. Bioreducible LbL films made of disulfide-containing poly(amido amine)s (PAAs) and plasmid DNA can be degraded by redox-active membrane proteins through the thiol-disulfide exchange reaction to release DNA exclusively into the extracellular microenvironment adjacent to the film. In order to better understand the film degradation mechanism and nature of the released species, the bioreducible film degradation is studied by atomic force microscopy, fluorescence, and dynamic light scattering in solutions containing a reducing agent. The PAA/DNA LbL film undergoes fast bulk degradation with micrometer-sized pieces breaking off from the substrate. This bulk degradation behavior is arrested by periodic insertions of a nonbioreducible poly(ethylenimine) (PEI) layer. The LbL films containing PAA/DNA and PEI/DNA bilayers display sequential film disassembly and are capable of continuously releasing DNA nanoparticles over a prolonged time. Insertion of the PEI layer enables the bioreducible LbL films to transfect human embryonic kidney 293 cells. The data conclude that the PEI layer is effective as a barrier layer against interlayer diffusion during LbL film assembly and more importantly during film disassembly. Without the barrier layer, the high mobility of cleaved PAA fragments is responsible for bulk degradation of bioreducible LbL films, which may prevent their ultimate gene-delivery applications. This work establishes a direct link among film internal structure, disassembly mechanism, and transfection efficiency. It provides a simple method to design bioreducible LbL films for sequential and long-time DNA release.
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Affiliation(s)
- Yi Zou
- Department of Chemical Engineering and Materials Science, Wayne State University , 5050 Anthony Wayne Drive, Detroit, Michigan 48202, United States
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43
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Owusu-Nkwantabisah S, Gammana M, Tripp CP. Dynamics of layer-by-layer growth of a polyelectrolyte multilayer studied in situ using attenuated total reflectance infrared spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:11696-11703. [PMID: 25203136 DOI: 10.1021/la5031558] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Attenuated total reflectance infrared spectroscopy (ATR-IR) was used to study the dynamic layer-by-layer (LBL) growth of a sodium polyacrylate (NaPA)/poly(diallydimethylammonium) chloride (PDADMAC) multilayer on TiO2 particles. Molecular weights (Mw) used were 30 and 60 kDa for NaPA and 8.5 and 150 kDa for PDADMAC. IR spectra were recorded in situ as a function of time and were used to obtain the dynamic mass adsorbed and bound fraction of the polymers during each deposition step. For 30 kDa NaPA layers, the dynamics of adsorption show an initial rapid rise in mass followed by a slow increase toward a plateau value upon LBL with 150 kDa PDADMAC. In contrast, the 60 kDa NaPA layers achieve a plateau quickly and do not show a slow increase toward a plateau. In the case of LBL with 150 kDa PDADMAC, the dynamics of the bound fraction of polymer per layer suggest that polymer diffusion and conformational rearrangement occur for the layers of 30 kDa NaPA but not for the 60 kDa NaPA layers. Furthermore, PDADMAC adsorption profiles show that there is no diffusion of the PDADMAC layers and that PDADMAC flattens onto the underlying layer. A linear growth in the mass adsorbed per layer was observed for 150 kDa PDADMAC with both molecular weights of NaPA. In the case of 8.5 kDa PDADMAC, smaller growth increments and the desorption of underlying layers were observed. This work demonstrates the use of ATR-IR in obtaining the dynamics of LBL multilayer formation. Furthermore, it provides an example in which polymer diffusion during LBL film formation does not lead to exponential growth.
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Affiliation(s)
- Silas Owusu-Nkwantabisah
- Department of Chemistry, and Laboratory for Surface Science and Technology, University of Maine , Orono, Maine 04469, United States
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44
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Zhuk I, Jariwala F, Attygalle AB, Wu Y, Libera MR, Sukhishvili SA. Self-defensive layer-by-layer films with bacteria-triggered antibiotic release. ACS NANO 2014; 8:7733-45. [PMID: 25093948 DOI: 10.1021/nn500674g] [Citation(s) in RCA: 174] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We report on highly efficient, bioresponsive, controlled-release antibacterial coatings constructed by direct assembly of tannic acid (TA) with one of several cationic antibiotics (tobromycin, gentamicin, and polymyxin B) using the layer-by-layer (LbL) technique. These films exhibit a distinct “self-defense” behavior triggered by acidification of the immediate environment by pathogenic bacteria, such as Staphylococcus epidermidis (S. epidermidis) or Escherichia coli (E. coli). Films assembled using spin-assisted and dip-assisted techniques show drastically different morphology, thickness and pH-/bacteria-triggered antibiotic release characteristics. While dip-deposited films have rough surfaces with island-like, granular structures regardless of the film thickness, spin-assisted LbL assemblies demonstrate a transition from linear deposition of uniform 2D films to a highly developed 3D morphology for films thicker than ∼45 nm. Ellipsometry, UV–vis and mass spectrometry confirm that all coatings do not release antibiotics in phosphate buffered saline at pH 7.4 for as long as one month in the absence of bacteria and therefore do not contribute to the development of antibiotic resistance. These films do, however, release antibiotics upon pH lowering. The rate of triggered release can be controlled through the choice of assembled antibiotic and the assembly technique (spin- vs dip-deposition) and by the spinning rate used during deposition, which all affect the strength of TA–antibiotic binding. TA/antibiotic coatings as thin as 40 nm strongly inhibit S. epidermidis and E. coli bacterial growth both at surfaces and in surrounding medium, but support adhesion and proliferation of murine osteoblast cells. These coatings thus present a promising way to incorporate antibacterial agents at surfaces to prevent bacterial colonization of implanted biomedical devices.
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45
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Borges J, Mano JF. Molecular Interactions Driving the Layer-by-Layer Assembly of Multilayers. Chem Rev 2014; 114:8883-942. [DOI: 10.1021/cr400531v] [Citation(s) in RCA: 609] [Impact Index Per Article: 60.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- João Borges
- 3B’s
Research Group—Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra,
S. Cláudio do Barco 4806-909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B’s
− PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João F. Mano
- 3B’s
Research Group—Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra,
S. Cláudio do Barco 4806-909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B’s
− PT Government Associate Laboratory, Braga/Guimarães, Portugal
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46
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pH and Salt Effects on the Associative Phase Separation of Oppositely Charged Polyelectrolytes. Polymers (Basel) 2014. [DOI: 10.3390/polym6051414] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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47
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Sham AYW, Notley SM. Layer-by-layer assembly of thin films containing exfoliated pristine graphene nanosheets and polyethyleneimine. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:2410-2418. [PMID: 24528297 DOI: 10.1021/la404745b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A method for the modification of surface properties through the deposition of stabilized graphene nanosheets is described. Here, the thickness of the film is controlled through the use of the layer-by-layer technique, where the sequential adsorption of the cationic polyethyleneimine (PEI) is followed by the adsorption of anionic graphene sheets modified with layers of polyethylene oxide-polypropylene oxide-polyethylene oxide (PEO-PPO-PEO) surfactants. The graphene particles were prepared using the surfactant-assisted liquid-phase exfoliation technique, with the low residual negative charge arising from edge defects. The buildup of the multilayer assembly through electrostatic interactions was strongly influenced by the solution conditions, including pH, ionic strength, and ionic species. Thereby, not only could the thickness of the film be tailored through the choice of the number of bilayers deposited but the viscoelastic properties of the film could also be modified by changing solution conditions at which the different species were deposited. The quartz crystal microbalance was used to measure the mass of graphene and polyelectrolyte immobilized at the interface as well as to probe the energy dissipated in the adsorbed layer.
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Affiliation(s)
- Alison Y W Sham
- Department of Applied Mathematics, Research School of Physics and Engineering, Australian National University , Canberra, Australian Capital Territory 0200, Australia
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48
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Xu L, Selin V, Zhuk A, Ankner JF, Sukhishvili SA. Molecular Weight Dependence of Polymer Chain Mobility within Multilayer Films. ACS Macro Lett 2013; 2:865-868. [PMID: 35607005 DOI: 10.1021/mz400413v] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fluorescence recovery after photobleaching has been applied to determine, to our knowledge for the first time, the molecular weight (Mw) dependence of lateral diffusion of polymer chains within layer-by-layer (LbL) films. As shown by neutron reflectometry, polyelectrolyte multilayers containing polymethacrylic acid (PMAA, Mw/Mn < 1.05) of various molecular weights assembled from solutions of low ionic strengths at pH 4.5, where film growth was linear, showed similar diffusion of PMAA in the direction perpendicular to the film surface. At a salt concentration sufficient for unfreezing electrostatically bonded chains, layer intermixing remained almost unaffected (changes <1.0 nm), while the lateral diffusion coefficient (D) scaled with the PMAA molecular weight as D ∼ Mw-1±0.05.
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Affiliation(s)
- Li Xu
- Department
of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Victor Selin
- Department
of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Aliaksandr Zhuk
- Department
of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - John F. Ankner
- Spallation Neutron
Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Svetlana A. Sukhishvili
- Department
of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
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49
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Suflet DM, Pelin IM, Timpu D, Popescu I. pH-sensitive multilayers based on maleic acid terpolymers with weak and strong acid moieties. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.06.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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50
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Ghostine RA, Markarian MZ, Schlenoff JB. Asymmetric Growth in Polyelectrolyte Multilayers. J Am Chem Soc 2013; 135:7636-46. [DOI: 10.1021/ja401318m] [Citation(s) in RCA: 172] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ramy A. Ghostine
- Department of Chemistry
and Biochemistry, The Florida State University, Tallahassee, Florida
32306-4390, United States
| | - Marie Z. Markarian
- Department of Chemistry
and Biochemistry, The Florida State University, Tallahassee, Florida
32306-4390, United States
| | - Joseph B. Schlenoff
- Department of Chemistry
and Biochemistry, The Florida State University, Tallahassee, Florida
32306-4390, United States
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