1
|
Heteroaggregation between particles modified by polyelectrolyte multilayers. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
2
|
Yılmaz Aykut D, Yolaçan Ö, Kaşgöz H, Deligoz H. Tunable safranine T release from LbL films of single/blend polyanions. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-021-04883-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
3
|
O’Neal JT, Wilcox KG, Zhang Y, George IM, Lutkenhaus JL. Comparison of KBr and NaCl effects on the glass transition temperature of hydrated layer-by-layer assemblies. J Chem Phys 2018; 149:163317. [DOI: 10.1063/1.5037491] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Joshua T. O’Neal
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843-3122, USA
| | - Kathryn G. Wilcox
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122, USA
| | - Yanpu Zhang
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122, USA
| | - Ian M. George
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122, USA
| | - Jodie L. Lutkenhaus
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843-3122, USA
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122, USA
| |
Collapse
|
4
|
O'Neal JT, Dai EY, Zhang Y, Clark KB, Wilcox KG, George IM, Ramasamy NE, Enriquez D, Batys P, Sammalkorpi M, Lutkenhaus JL. QCM-D Investigation of Swelling Behavior of Layer-by-Layer Thin Films upon Exposure to Monovalent Ions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:999-1009. [PMID: 29131641 DOI: 10.1021/acs.langmuir.7b02836] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Polyelectrolyte multilayers and layer-by-layer assemblies are susceptible to structural changes in response to ionic environment. By altering the salt type and ionic strength, structural changes can be induced by disruption of intrinsically bound ion pairs within the multilayer network via electrostatic screening. Notably, high salt concentrations have been used for the purposes of salt-annealing and self-healing of LbL assemblies with KBr, in particular, yielding a remarkably rapid response. However, to date, the structural and swelling effects of various monovalent ion species on the behavior of LbL assemblies remain unclear, including a quantitative view of ion content in the LbL assembly and thickness changes over a wide concentration window. Here, we investigate the effects of various concentrations of KBr (0 to 1.6 M) on the swelling and de-swelling of LbL assemblies formed from poly(diallyldimethylammonium) polycation (PDADMA) and poly(styrene sulfonate) polyanion (PSS) in 0.5 M NaCl using quartz-crystal microbalance with dissipation (QCM-D) monitoring as compared to KCl, NaBr, and NaCl. The ion content after salt exchange is quantified using neutron activation analysis (NAA). Our results demonstrate that Br- ions have a much greater effect on the structure of as-prepared thin films than Cl- at ionic strengths above assembly conditions, which is possibly caused by the more chaotropic nature of Br-. It is also found that the anion in general dominates the swelling response as compared to the cation because of the excess PDADMA in the multilayer. Four response regimes are identified that delineate swelling due to electrostatic repulsion, slight contraction, swelling due to doping, and film destruction as ionic strength increases. This understanding is critical if such materials are to be used in applications requiring submersion in chemically dynamic environments such as sensors, coatings on biomedical implants, and filtration membranes.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Piotr Batys
- Department of Chemistry and Materials Science, School of Chemical Technology, Aalto University , P.O. Box 16100, FI-00076 Aalto, Finland
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences , Niezapominajek 8, PL-30239 Krakow, Poland
| | - Maria Sammalkorpi
- Department of Chemistry and Materials Science, School of Chemical Technology, Aalto University , P.O. Box 16100, FI-00076 Aalto, Finland
| | | |
Collapse
|
5
|
Reid DK, Summers A, O’Neal J, Kavarthapu AV, Lutkenhaus JL. Swelling and Thermal Transitions of Polyelectrolyte Multilayers in the Presence of Divalent Ions. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01164] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Dariya K. Reid
- Artie McFerrin Department of Chemical Engineering and ‡Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Alexandra Summers
- Artie McFerrin Department of Chemical Engineering and ‡Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Josh O’Neal
- Artie McFerrin Department of Chemical Engineering and ‡Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Avanti V. Kavarthapu
- Artie McFerrin Department of Chemical Engineering and ‡Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Jodie L. Lutkenhaus
- Artie McFerrin Department of Chemical Engineering and ‡Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| |
Collapse
|
6
|
Chang GX, Ren KF, Zhao YX, Sun YX, Ji J. Modulation of cell behaviors by electrochemically active polyelectrolyte multilayers. E-POLYMERS 2014. [DOI: 10.1515/epoly-2014-0075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
AbstractIn addition to the topographical features and chemical properties of substrates, the mechanical properties are known as a vital regulator of cellular processes such as adhesion, proliferation, and migration, and have received considerable attention in recent years. In this work, electrochemical redox multilayers made of ferrocene-modified poly(ethylenimine) (PEI-Fc) and deoxyribonucleic acid (DNA) with controlled stiffness were used to investigate the effects of the mechanical properties of multilayers on fibroblast cell (NIH/3T3) behaviors. Redox PEI-Fc plays an essential role in inducing swelling in multilayers under an electrochemical stimulus, resulting in distinct changes in the stiffness of the multilayers. The Young’s modulus varied from 2.05 to 1.07 MPa for the (PEI-Fc/DNA) multilayers by changing the oxidation time of the electrochemical treatment. We demonstrated that the adhesion, proliferation, and migration of fibroblast cells depended on the multilayers’ stiffness. These results indicate that cell behaviors can be precisely controlled by electrochemical treatment, which provides a new way to prepare thin films with tunable mechanical properties with potential biomedical applications.
Collapse
Affiliation(s)
- Guo-xun Chang
- 1MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Ke-feng Ren
- 1MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Yi-xiu Zhao
- 1MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Yi-xin Sun
- 1MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Jian Ji
- 1MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| |
Collapse
|
7
|
Wang Y, Narain R, Liu Y. Study of bacterial adhesion on different glycopolymer surfaces by quartz crystal microbalance with dissipation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:7377-7387. [PMID: 24885262 DOI: 10.1021/la5016115] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Protein-carbohydrate interactions are involved in a wide variety of cellular recognition processes including cell growth regulation, differentiation and adhesion, the immune response, and viral or bacterial infections. A common way for bacteria to achieve adhesion is through their fimbriae which possess cellular lectins that can bind to complementary carbohydrates on the surface of the host tissues. In this work, we synthesized glycopolymers using reversible addition-fragmentation chain transfer (RAFT) polymerization which were subsequently immobilized on a sensor surface for studies of bacterial adhesion by quartz crystal microbalance with dissipation (QCM-D). Ricinus communis Agglutinin (RCA120), a galactose specific lectin, was first studied by QCM-D to determine the specific lectin interactions to the different glycopolymers-treated surfaces. Subsequently, Pseudomonas aeruginosa PAO1 (a Gram-negative bacterium with galactose-specific binding C-type lectin (PA-IL)) and Escherichia coli K-12 (a Gram-negative bacterium with mannose-specific binding lectin) were then used as model bacteria to study bacterial adhesion mechanisms on different polymer-treated sensor surfaces by the coupled resonance theory. Our results showed that lectin-carbohydrate interactions play significant roles in comparison to the nonspecific interactions, such as electrostatic interactions. A significantly higher amount of P. aeruginosa PAO1 could adhere on the glycopolymer surface with strong contact point stiffness as compared to E. coli K-12 on the same surface. Furthermore, in comparison to E. coli K-12, the adhesion of P. aeruginosa PAO1 to the glycopolymers was found to be highly dependent on the presence of calcium ions due to the specific C-type lectin interactions of PA-IL, and also the enhanced bacterial adhesion is attributed to the stiffer glycopolymer surface in higher ionic strength condition.
Collapse
Affiliation(s)
- Yinan Wang
- Department of Chemical and Materials Engineering and ‡Department of Civil and Environmental Engineering, University of Alberta , 116 Street and 85 Avenue, Edmonton, Alberta T6G 2G6, Canada
| | | | | |
Collapse
|
8
|
Zahn R, Bickel KR, Zambelli T, Reichenbach J, Kuhn FM, Vörös J, Schuster R. The entropy of water in swelling PGA/PAH polyelectrolyte multilayers. SOFT MATTER 2014; 10:688-693. [PMID: 24835977 DOI: 10.1039/c3sm52489b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We investigated the thermodynamical properties of water exchanged in poly(l-glutamic acid)/poly(allylamine)hydrochloride (PGA/PAH) polyelectrolyte multilayers containing ferrocyanide. Oxidation/reduction of the ferrocyanide in the multilayer caused a reversible swelling/contraction of the film due to the uptake/release of counter ions and water. We used electrochemical quartz crystal microbalance and electrochemical microcalorimetry to correlate the amount of water with the accompanying entropy changes during electrochemical swelling of the multilayer for a series of different anions at different concentrations. The number of exchanged water molecules was highly dependent on the ionic strength and the type of anion in the buffer solution. However, the entropy change per exchanged water molecule was found to be independent of these two parameters. The water molecules in the polyelectrolyte multilayer have reduced the entropy compared to that of bulk water (≈-1 J mol(-1) K(-1)). A comparison of hydration entropies for free polyelectrolytes and PGA/PAH multilayers suggests that such systems are mainly stabilized by water release during multilayer construction.
Collapse
Affiliation(s)
- Raphael Zahn
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Switzerland.
| | | | | | | | | | | | | |
Collapse
|
9
|
Hess A, Aksel N. Yield stress and scaling of polyelectrolyte multilayer modified suspensions: effect of polyelectrolyte conformation during multilayer assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:11236-11243. [PMID: 23952570 DOI: 10.1021/la401625p] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The yield stress of polyelectrolyte multilayer modified suspensions exhibits a surprising dependence on the polyelectrolyte conformation of multilayer films. The rheological data scale onto a universal master curve for each polyelectrolyte conformation as the particle volume fraction, φ, and the ionic strength of the background fluid, I, are varied. It is shown that rough films with highly coiled, brushy polyelectrolytes significantly enhance the yield stress. Moreover, via the ionic strength I of the background fluid, the dynamic yield stress of brushy polyelectrolyte multilayers can be finely adjusted over 2 decades.
Collapse
Affiliation(s)
- Andreas Hess
- Department of Mechanics and Fluid Dynamics, Freiberg University of Mining and Technology , Freiberg, Saxony, D-09596 Germany , and
| | | |
Collapse
|
10
|
Cui J, Iturri J, Götz U, Jimenez M, del Campo A. Analysis of responsive polymer films using surface acoustic waves. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:6582-7. [PMID: 23631510 DOI: 10.1021/la401014q] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The Surface Acoustic Wave (SAW) technique is applied for the first time to quantify the properties of a responsive polymer brush layer. Using a single SAW chip, the response of five different brush compositions to several pH changes was monitored in parallel in a single run. These results were compared with QCM-D studies on the same system. SAW exhibited two remarkable advantages against QCM-D: (i) multiplexing capability, which allowed considerable reduction in experimental time and expenses (1/8 reduction of experimental time, 1/5 in the number of chips, and 1/10 in solvent consumption in our case), and (ii) higher sensitivity in both mass and viscosity change than QCM-D (4-5 times higher in our systems). Our results demonstrate the suitability and advantages of the SAW technology for application in polymer science, in particular for the study of the compositional effects in responsive thin layers.
Collapse
Affiliation(s)
- Jiaxi Cui
- Max-Planck-Institut für Polymerforschung, Mainz, Germany
| | | | | | | | | |
Collapse
|
11
|
Irigoyen J, Han L, Llarena I, Mao Z, Gao C, Moya SE. Responsive Polyelectrolyte Multilayers Assembled at High Ionic Strength with an Unusual Collapse at Low Ionic Strength. Macromol Rapid Commun 2012; 33:1964-9. [DOI: 10.1002/marc.201200471] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Indexed: 01/22/2023]
|
12
|
Moya SE, Iturri Ramos JJ, Llarena I. Templation, Water Content, and Zeta Potential of Polyelectrolyte Nanoassemblies: a Comparison Between Polyelectrolyte Multilayers and Brushes. Macromol Rapid Commun 2012; 33:1022-35. [DOI: 10.1002/marc.201100874] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 02/07/2012] [Indexed: 12/15/2022]
|