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O'Bryan CS, Murdoch TJ, Strickland DJ, Rose KA, Bendejacq D, Lee D, Composto RJ. Investigating the Sequence Specific Adsorption Behavior of Polypeptides at the Solid/Liquid Interface. Langmuir 2023; 39:1740-1749. [PMID: 36637895 DOI: 10.1021/acs.langmuir.2c02292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Polymer adsorption at the solid/liquid interface depends not only on the chemical composition of the polymer but also on the specific placement of the monomers along the polymer sequence. However, challenges in designing polymers with well-controlled sequences have limited explorations into the role of polymer sequence on adsorption behavior to molecular simulations. Here, we demonstrate how the sequence control offered by polypeptide synthesis can be utilized to study the effects small changes in polymer sequence have on polymer adsorption behavior at the solid/liquid interface. Through a combination of quartz crystal microbalance with dissipation monitoring and total internal reflection ellipsometry, we study the adsorption behavior of three polypeptides, consisting of 90% lysine and 10% cysteine, onto a gold surface. We find different mechanisms are responsible for the adsorption of polypeptides and the resulting conformation on the surface. The initial adsorption of the polypeptides is driven by electrostatic interactions between the polylysine and the gold surface. Once adsorbed, the cysteine undergoes a thiol-Au reaction with the surface, altering the conformation of the polymer layer. Our findings suggest the conformation of the polypeptide layer is dependent on the placement of the cysteines within the sequence; polypeptide chains with evenly spaced cysteine groups adopt a more tightly bound "train" conformation as compared to polypeptides with closely grouped cysteine groups. We envision that the methodologies presented here to study sequence specific adsorption behaviors using polypeptides could be a valuable tool to complement molecular simulations studies.
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Affiliation(s)
- Christopher S O'Bryan
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
- Department of Material Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
| | - Timothy J Murdoch
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
| | - Daniel J Strickland
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
- Department of Material Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
| | - Katie A Rose
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
| | - Denis Bendejacq
- Complex Assemblies of Soft Matter Laboratory, IRL 3254, Solvay USA Inc., Bristol, Pennsylvania19007, United States
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
| | - Russell J Composto
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
- Department of Material Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
- Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
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Liang H, Webb MA, Chawathe M, Bendejacq D, de Pablo JJ. Understanding the Structure and Rheology of Galactomannan Solutions with Coarse-Grained Modeling. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Heyi Liang
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois60637, United States
| | - Michael A. Webb
- Chemical and Biological Engineering, Princeton University, Princeton, New Jersey08544, United States
| | - Manasi Chawathe
- Complex Assemblies of Soft Matter Laboratory, IRL 3254, Solvay USA Inc., Bristol, Pennsylvania19007, United States
| | - Denis Bendejacq
- Complex Assemblies of Soft Matter Laboratory, IRL 3254, Solvay USA Inc., Bristol, Pennsylvania19007, United States
| | - Juan J. de Pablo
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois60637, United States
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Shave MK, Zhou Y, Kim J, Kim YC, Hutchison J, Bendejacq D, Goulian M, Choi J, Composto RJ, Lee D. Zwitterionic surface chemistry enhances detachment of bacteria under shear. Soft Matter 2022; 18:6618-6628. [PMID: 36000279 PMCID: PMC10838016 DOI: 10.1039/d2sm00065b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The ubiquitous nature of microorganisms, especially of biofilm-forming bacteria, makes biofouling a prevalent challenge in many settings, including medical and industrial environments immersed in liquid and subjected to shear forces. Recent studies have shown that zwitterionic groups are effective in suppressing bacteria and protein adhesion as well as biofilm growth. However, the effect of zwitterionic groups on the removal of surface-bound bacteria has not been extensively studied. Here we present a microfluidic approach to evaluate the effectiveness in facilitating bacteria detachment by shear of an antifouling surface treatment using (3-(dimethyl;(3-trimethoxysilyl)propyl)ammonia propane-1-sulfonate), a sulfobetaine silane (SBS). Control studies show that SBS-functionalized surfaces greatly increase protein (bovine serum albumin) removal upon rinsing. On the same surfaces, enhanced bacteria (Pseudomonas aeruginosa) removal is observed under shear. To quantify this enhancement a microfluidic shear device is employed to investigate how SBS-functionalized surfaces promote bacteria detachment under shear. By using a microfluidic channel with five shear zones, we compare the removal of bacteria from zwitterionic and glass surfaces under different shear rates. At times of 15 min, 30 min, and 60 min, bacteria adhesion on SBS-functionalized surfaces is reduced relative to the control surface (glass) under quiescent conditions. However, surface-associated bacteria on the SBS-functionalized glass and control show similar percentages of live cells, suggesting minimal intrinsic biocidal effect from the SBS-functionalized surface. Notably, when exposed to shear rates ranging from 104 to 105 s-1, significantly fewer bacteria remain on the SBS-functionalized surfaces. These results demonstrate the potential of zwitterionic sulfobetaine as effective antifouling coatings that facilitate the removal of bacteria under shear.
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Affiliation(s)
- Molly K Shave
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Yitian Zhou
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jiwon Kim
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Ye Chan Kim
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | | | | | - Mark Goulian
- Department of Biology, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jonghoon Choi
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Russell J Composto
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
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O'Bryan CS, Rosenfeld J, Zhang A, Keller AW, Bendejacq D, Kagan CR, Murray CB, Lee D, Composto RJ. Electrochemically deposited molybdenum disulfide surfaces enable polymer adsorption studies using quartz crystal microbalance with dissipation monitoring (QCM-D). J Colloid Interface Sci 2022; 614:522-531. [PMID: 35121510 DOI: 10.1016/j.jcis.2022.01.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/21/2021] [Accepted: 01/16/2022] [Indexed: 11/16/2022]
Abstract
Polymer and small molecules are often used to modify the wettability of mineral surfaces which facilitates the separation of valuable minerals such as molybdenum disulfide (MoS2) from gangue material through the process of froth flotation. By design, traditional methods used in the field for evaluating the separation efficacy of these additives fail to give proper access to adsorption kinetics and molecule conformation, crucial aspects of flotation where contact times may not allow for full thermodynamic equilibrium. Thus, there is a need for alternative methods for evaluating additives that accurately capture these features during the adsorption of additives at the solid/liquid interface. Here, we present a novel method for preparing MoS2 films on quartz crystals used for Quartz Crystal Microbalance with Dissipation (QCM-D) measurements through an electrochemical deposition process. The resulting films exhibit well-controlled structure, composition, and thickness and therefore are ideal for quantifying polymer adsorption. After deposition, the sensors can be annealed without damaging the quartz crystal, resulting in a phase transition of the MoS2 from the as-deposited, amorphous phase to the 2H semiconducting phase. Furthermore, we demonstrate the application of these sensors to study the interactions of additives at the solid/liquid interface by investigating the adsorption of a model polymer, dextran, onto both the amorphous and crystalline MoS2 surfaces. We find that the adsorption rate of dextran onto the amorphous surface is approximately twice as fast as the adsorption onto the annealed surface. These studies demonstrate the ability to gain insight into the short-term kinetics of interaction between molecules and mineral surface, behavior that is key to designing additives with superior separation efficiency.
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Affiliation(s)
- Christopher S O'Bryan
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, United States; Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, United States; Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, PA, United States
| | - Joseph Rosenfeld
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, United States
| | - Aria Zhang
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, United States
| | - Austin W Keller
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, United States
| | - Denis Bendejacq
- Complex Assemblies of Soft Matter Laboratory, IRL 3254, Solvay USA Inc., Bristol, PA, United States
| | - Cherie R Kagan
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, United States; Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, United States; Department of Chemistry, University of Pennsylvania, Philadelphia, PA, United States
| | - Christopher B Murray
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, United States; Department of Chemistry, University of Pennsylvania, Philadelphia, PA, United States
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, United States.
| | - Russell J Composto
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, United States; Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, PA, United States.
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Maxit B, Giermanska J, Ly I, Bendejacq D, Mondain-Monval O, Ponsinet V. Freeze-fracture TEM imaging of robust order in swollen phases of amphiphilic diblock copolymers. Langmuir 2011; 27:1990-1995. [PMID: 21188991 DOI: 10.1021/la104290z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report on the structures exhibited by two different diblock poly(styrene)-b-poly(acrylic acid) (PS-b-PAA) copolymers in water, a selective solvent. Using a combination of X-ray scattering and freeze fracture-transmission electron microscopy (FF-TEM), we show that these structures can be widely swollen while retaining their initial morphology and a high degree of long-range order. The analysis of the FF-TEM pictures also evidences the presence of water crystallites of regular size and shape within the confined water domains. We relate the growth of these crystallites to the high local ionic strength of the water swelling the PAA brushes. Moreover, the confinement of the crystallites growth shows that the swollen phases have a very robust structure, potentially useful for confining colloidal particles.
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Affiliation(s)
- Benoit Maxit
- Centre de Recherche Paul Pascal UPR 8641, Université Bordeaux 1-CNRS, avenue Schweitzer, 33600 Pessac, France
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Tay A, Monteux C, Bendejacq D, Lequeux F. How a coating is hydrated ahead of the advancing contact line of a volatile solvent droplet. Eur Phys J E Soft Matter 2010; 33:203-210. [PMID: 20972811 DOI: 10.1140/epje/i2010-10662-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Revised: 07/13/2010] [Indexed: 05/30/2023]
Abstract
The wettability of coatings is very sensitive to the amount of solvent they may contain. When a droplet of volatile solvent, such as water, is deposited on a substrate, its vapor may quickly condensate just ahead of the contact line. We give an estimation of the extent of solvent uptake by a coating of variable thickness e , in front of an advancing contact line of given velocity U . Depending on the values of e and U , we observe three regimes: at low velocity and for a thin coating, the coating adsorbs a fraction of solvent that can quickly equilibrate across its entire thickness, so that it mainly appears solvophilic, while this is not the case for a thick coating. For high velocities, regardless the coating thickness, the coating ahead of the contact line does not have enough time to adsorb a significant amount of solvent, so that it mainly appears solvophobic. All these phenomena appear to be controlled by a molecular cut-off length.
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Affiliation(s)
- A Tay
- PPMD-SIMM, UMR, CNRS, UPMC, ESPCIParisTech, Paris, France
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Bendejacq D, Joanicot M, Ponsinet V. Pearling instabilities in water-dispersed copolymer cylinders with charged brushes. Eur Phys J E Soft Matter 2005; 17:83-92. [PMID: 15864731 DOI: 10.1140/epje/i2004-10111-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2004] [Accepted: 03/07/2005] [Indexed: 05/02/2023]
Abstract
We investigate the structural behavior of a poly(styrene)-block-poly(acrylic acid) diblock copolymer which forms hexagonally-packed PS cylinders (C-phase) in the melt state. The water dispersion of this structure provides hairy cylinders which comprise a PAA swollen cylindrical brush with a height h tunable via its degree of ionization and the ionic strength in the solution, and a water-free, PS cylindrical core of constant radius R(C). Such system constitutes an "out-of-equilibrium" frustrated model system: the selective swelling of the PAA brush results in a frustration of the interface curvature, which the ratio h/R(C) allows to quantify. Upon heating at a temperature higher than the glass transition temperature of the PS core, the glassiness of the core is relieved and the mechanical constraints arising from the selective swelling of the structure can be relaxed: the cylinders undergo a cylinder-to-sphere transition upon annealing at high temperature, when above a frustration threshold h/R(C) approximately 1.8. Thanks to a careful mapping of the transition diagram, an undulating cylindrical morphology (UC) is identified between unchanged cylinders ( h/R(C) approximately 1.8) and spheres ( h/R(C) < or = 2.0), which appears to result from a Rayleigh-like pearling instability of the copolymer cylinders.
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Affiliation(s)
- D Bendejacq
- Complex Fluids Laboratory, UMR, 166 CNRS/Rhodia, Cranbury, NJ 08512, USA
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Bendejacq D, Ponsinet V, Joanicot M. Water-dispersed lamellar phases of symmetric poly(styrene)-block-poly(acrylic acid) diblock copolymers: model systems for flat dense polyelectrolyte brushes. Eur Phys J E Soft Matter 2004; 13:3-13. [PMID: 15024611 DOI: 10.1140/epje/e2004-00035-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We investigate the static properties of a water-dispersed lamellar ( L) phase formed in the melt state with a nearly symmetric poly(styrene)-block-poly(acrylic acid) (PS- b-PAA) diblock copolymer. The PAA brush is considered as a model flat polyelectrolyte ( PE) brush of controlled surface density. Thanks to small-angle X-ray scattering, its behavior in water is studied as a function of (i) its ionization, through the pH of the dispersions which is increased by an addition of a known amount of a base, i.e. sodium hydroxyde NaOH, and (ii) in the presence of a monovalent salt, i.e. sodium chloride NaCl, of concentration C(S). At low pH, we find that the brush effectively behaves as a neutral brush. At high pH, the brush is in the so-called "osmotic regime", in which all sodium counterions are trapped within the brush volume and stretch the chains via an osmotic effect. The properties of such a brush in the presence of a monovalent salt, confirm this result, showing a C(S)(-1/3) dependence in the brush height L(O), in agreement with mean-field predictions. The L(O)- C(S) profiles at different ionizations give access to the actual brush internal charge fraction f. The results are found to be in very good quantitative agreement with experimental measures found in the literature, and can be completely and quantitatively described by Oosawa's approach to counterion condensation in a semi-dilute to concentrated solution of charged, rod-like chains.
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Affiliation(s)
- D Bendejacq
- Complex Fluids Laboratory, UMR 166 CNRS/Rhodia, CN 7500, Cranbury, New Jersey 08512-7500, USA.
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Bendejacq D, Ponsinet V, Joanicot M, Vacher A, Airiau M. Chemical Tuning of the Microphase Separation in Diblock Copolymers from Controlled Radical Polymerization. Macromolecules 2003. [DOI: 10.1021/ma0302661] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bendejacq D, Ponsinet V, Joanicot M, Loo YL, Register RA. Well-Ordered Microdomain Structures in Polydisperse Poly(styrene)−Poly(acrylic acid) Diblock Copolymers from Controlled Radical Polymerization. Macromolecules 2002. [DOI: 10.1021/ma020158z] [Citation(s) in RCA: 143] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Barrère M, Ganachaud F, Bendejacq D, Dourges MA, Maitre C, Hémery P. Anionic polymerization of octamethylcyclotetrasiloxane in miniemulsion II. Molar mass analyses and mechanism scheme. POLYMER 2001. [DOI: 10.1016/s0032-3861(01)00207-5] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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