1
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Gnanasampanthan T, Karthäuser JF, Spöllmann S, Wanka R, Becker HW, Rosenhahn A. Amphiphilic Alginate-Based Layer-by-Layer Coatings Exhibiting Resistance against Nonspecific Protein Adsorption and Marine Biofouling. ACS APPLIED MATERIALS & INTERFACES 2022; 14:16062-16073. [PMID: 35377590 DOI: 10.1021/acsami.2c01809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Amphiphilic coatings are promising materials for fouling-release applications, especially when their building blocks are inexpensive, biodegradable, and readily accessible polysaccharides. Here, amphiphilic polysaccharides were fabricated by coupling hydrophobic pentafluoropropylamine (PFPA) to carboxylate groups of hydrophilic alginic acid, a natural biopolymer with high water-binding capacity. Layer-by-layer (LbL) coatings comprising unmodified or amphiphilic alginic acid (AA*) and polyethylenimine (PEI) were assembled to explore how different PFPA contents affect their physicochemical properties, resistance against nonspecific adsorption (NSA) of proteins, and antifouling activity against marine bacteria (Cobetia marina) and diatoms (Navicula perminuta). The amphiphilic multilayers, characterized through spectroscopic ellipsometry, water contact angle goniometry, elemental analysis, AFM, XPS, and SPR spectroscopy, showed similar or even higher swelling in water and exhibited higher resistance toward NSA of proteins and microfouling marine organisms than multilayers without fluoroalkyl groups.
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Affiliation(s)
| | - Jana F Karthäuser
- Analytical Chemistry─Biointerfaces, Ruhr University Bochum, Bochum 44780, Germany
| | - Stephan Spöllmann
- RUBION, Central Unit for Ion Beams and Radionuclides, University of Bochum, Bochum 44780, Germany
| | - Robin Wanka
- Analytical Chemistry─Biointerfaces, Ruhr University Bochum, Bochum 44780, Germany
| | - Hans-Werner Becker
- RUBION, Central Unit for Ion Beams and Radionuclides, University of Bochum, Bochum 44780, Germany
| | - Axel Rosenhahn
- Analytical Chemistry─Biointerfaces, Ruhr University Bochum, Bochum 44780, Germany
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2
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Schwarze J, Koc J, Koschitzki F, Gardner H, Hunsucker KZ, Swain GW, Rosenhahn A. Reduction of biofilm accumulation by constant and alternating potentials in static and dynamic field experiments. BIOFOULING 2022; 38:119-130. [PMID: 35240893 DOI: 10.1080/08927014.2022.2027923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 01/06/2022] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
The application of electric fields to conductive coatings is an environmentally friendly way to reduce biofilm formation. In particular alternating potentials (APs) have received increasing attention in recent studies. Here, an electrochemical rotating disk setup for dynamic field exposure experiments was developed to study how APs alter the attachment of fouling organisms in a multispecies ocean environment. A specific focus of the device design was proper integration of the potentiostat in the strongly corroding saltwater environment. The effect of APs on the accumulation of fouling organisms in short term field exposures was studied. Potentials on conductive gold surfaces were periodically switched between -0.3 V and 0.3 V or between -0.8 V and 0.6 V at a frequency of 0.5 Hz. APs were capable of significantly reducing the attachment of marine fouling organisms compared with the conductive samples immersed at open circuit potentials.
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Affiliation(s)
- Jana Schwarze
- Analytical Chemistry - Biointerfaces, Ruhr University Bochum, Bochum, Germany
| | - Julian Koc
- Analytical Chemistry - Biointerfaces, Ruhr University Bochum, Bochum, Germany
| | - Florian Koschitzki
- Analytical Chemistry - Biointerfaces, Ruhr University Bochum, Bochum, Germany
| | - Harrison Gardner
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, FL, USA
| | - Kelli Z Hunsucker
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, FL, USA
| | - Geoffrey W Swain
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, FL, USA
| | - Axel Rosenhahn
- Analytical Chemistry - Biointerfaces, Ruhr University Bochum, Bochum, Germany
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3
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Talluri SNL, Winter RM, Salem DR. Nanoscale characteristics of conditioning film development on photobioreactor materials: influence on the initial adhesion and biofilm formation by a cyanobacterium. BIOFOULING 2021; 37:777-790. [PMID: 34455869 DOI: 10.1080/08927014.2021.1971201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 08/10/2021] [Accepted: 08/15/2021] [Indexed: 06/13/2023]
Abstract
Adsorption of conditioning films on a solid surface is the first step in the development of biofilms. With the goal of understanding the preliminary adhesion mechanisms of cyanobacteria on photobioreactor (PBR) materials to prevent biofouling, the physical changes occurring on PBR materials were investigated during the initial adhesion and biofilm formation by Anabaena sp. PCC 7120, a cyanobacterium that is genetically modified to produce linalool. Atomic force microscopy (AFM) revealed that the conditioning film deposition was in the form of spike-like structures on all the materials except PVC. The average heights (in the range 9 - 16 nm) of the conditioning films deposited on glass, PMMA, PC and HDPE were 11 to 20 times higher than on PVC at 96 h. The time dependent change in thickness of conditioning films correlated well with Anabaena cell attachment to the PBR materials. The rapid and significant colonization of Anabaena on glass within 48 h was consistent with the increase in thickness of the conditioning film within this time period. Lack of the conditioning film spike structures and no change in thickness of the conditioning films with time on the PVC together with comparatively delayed cell attachment and conditioning-film protein deposition on this material, indicated that the nanoscale spike structures on the other PBR materials may be accelerating the cell attachment process but are not a prerequisite for cell attachment. These results suggest that PVC should be explored further as an antifouling material for photobioreactors. The thickness of the conditioning films on glass measured by a scratch and scan method was in good agreement with the thickness values measured by an adhesive tape method, indicating that both these methods can be used for fast and reliable AFM thickness determination of bacterial conditioning films.
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Affiliation(s)
- Suvarna N L Talluri
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
- Composite and Nanocomposite Advanced Manufacturing - Biomaterials Center (CNAM-Bio), South Dakota School of Mines and Technology, Rapid City, SD, USA
| | - Robb M Winter
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
- Composites and Polymer Engineering Laboratory, South Dakota School of Mines and Technology, Rapid City, SD, USA
| | - David R Salem
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
- Composites and Polymer Engineering Laboratory, South Dakota School of Mines and Technology, Rapid City, SD, USA
- Composite and Nanocomposite Advanced Manufacturing - Biomaterials Center (CNAM-Bio), South Dakota School of Mines and Technology, Rapid City, SD, USA
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4
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Schwarze J, Schuhmann W, Rosenhahn A. Control of Marine Bacteria and Diatom Biofouling by Constant and Alternating Potentials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:7464-7472. [PMID: 34100615 DOI: 10.1021/acs.langmuir.1c00865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The application of electrochemical potentials to surfaces is an easy and direct way to alter surface charge density, the structure of the electrochemical double layer, and the presence of electrochemically activated species. On such electrified interfaces the formation of biofilms is reduced. Here we investigate how applied potentials alter the colonization of surfaces by the marine bacterium Cobetia marina and the marine diatom Navicula perminuta. Different constant potentials between -0.8 and 0.6 V as well as regular switching between two potentials were investigated, and their influence on the attachment of the two biofilm-forming microorganisms on gold-coated working electrodes was quantified. Reduced bacteria and diatom attachment were found when negative potentials and alternating potentials were applied. The results are discussed on the basis of the electrochemical processes occurring at the working electrode in artificial seawater as revealed by cyclic voltammetry.
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Affiliation(s)
- Jana Schwarze
- Analytical Chemistry - Faculty of Chemistry and Biochemistry, Biointerfaces, Ruhr University Bochum, Universitätsstrasse 150, D-44780 Bochum, Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry - Center for Electroanalytical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstrasse 150, D-44780 Bochum, Germany
| | - Axel Rosenhahn
- Analytical Chemistry - Faculty of Chemistry and Biochemistry, Biointerfaces, Ruhr University Bochum, Universitätsstrasse 150, D-44780 Bochum, Germany
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5
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Gnanasampanthan T, Beyer CD, Yu W, Karthäuser JF, Wanka R, Spöllmann S, Becker HW, Aldred N, Clare AS, Rosenhahn A. Effect of Multilayer Termination on Nonspecific Protein Adsorption and Antifouling Activity of Alginate-Based Layer-by-Layer Coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:5950-5963. [PMID: 33969986 DOI: 10.1021/acs.langmuir.1c00491] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Layer-by-layer (LbL) assembly is a versatile platform for applying coatings and studying the properties of promising compounds for antifouling applications. Here, alginate-based LbL coatings were fabricated by alternating the deposition of alginic acid and chitosan or polyethylenimine to form multilayer coatings. Films were prepared with either odd or even bilayer numbers to investigate if the termination of the LbL coatings affects the physicochemical properties, resistance against the nonspecific adsorption (NSA) of proteins, and antifouling efficacy. The hydrophilic films, which were characterized using spectroscopic ellipsometry, water contact angle goniometry, ATR-FTIR spectroscopy, AFM, XPS, and SPR spectroscopy, revealed high swelling in water and strongly reduced the NSA of proteins compared to the hydrophobic reference. While the choice of the polycation was important for the protein resistance of the LbL coatings, the termination mattered less. The attachment of diatoms and settling of barnacle cypris larvae revealed good antifouling properties that were controlled by the termination and the charge density of the LbL films.
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Affiliation(s)
| | | | | | | | | | | | | | - Nick Aldred
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom
- School of Life Sciences, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, United Kingdom
| | - Anthony S Clare
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom
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6
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Thamaraiselvan C, Manderfeld E, Kleinberg MN, Rosenhahn A, Arnusch CJ. Superhydrophobic Candle Soot as a Low Fouling Stable Coating on Water Treatment Membrane Feed Spacers. ACS APPLIED BIO MATERIALS 2021; 4:4191-4200. [DOI: 10.1021/acsabm.0c01677] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chidambaram Thamaraiselvan
- The Jacob Blaustein Center for Scientific Cooperation, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, Midreshet Ben-Gurion 8499000, Israel
- Department of Desalination and Water Treatment, Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, Midreshet Ben-Gurion 8499000, Israel
| | - Emily Manderfeld
- Analytical Chemistry—Biointerfaces, Faculty for Chemistry and Biochemistry, Ruhr University Bochum, 44780 Bochum, Germany
| | - Maurício Nunes Kleinberg
- Department of Desalination and Water Treatment, Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, Midreshet Ben-Gurion 8499000, Israel
- Albert Katz International School for Desert Studies, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, Midreshet Ben-Gurion 8499000, Israel
| | - Axel Rosenhahn
- Analytical Chemistry—Biointerfaces, Faculty for Chemistry and Biochemistry, Ruhr University Bochum, 44780 Bochum, Germany
| | - Christopher J. Arnusch
- Department of Desalination and Water Treatment, Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, Midreshet Ben-Gurion 8499000, Israel
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7
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Wanka R, Koschitzki F, Puzovic V, Pahl T, Manderfeld E, Hunsucker KZ, Swain GW, Rosenhahn A. Synthesis and Characterization of Dendritic and Linear Glycol Methacrylates and Their Performance as Marine Antifouling Coatings. ACS APPLIED MATERIALS & INTERFACES 2021; 13:6659-6669. [PMID: 33497184 DOI: 10.1021/acsami.0c21212] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Dendritic polyglycerol (PG) was covalently coupled to 2-hydroxyethyl methacrylate (HEMA) by an anionically catalyzed ring-opening polymerization generating a dendritic PG-HEMA with four PG repetition units (PG4MA). Coatings of the methacrylate monomer were prepared by grafting-through and compared against commercially available hydrophilic monomers of HEMA, poly(ethylene) glycol methacrylate (PEGMA), and poly(propylene) glycol methacrylate (PPGMA). The obtained coatings were characterized by modern surface analytical techniques, including water contact angle goniometry (sessile and captive bubble), attenuated total internal reflection Fourier transform infrared spectroscopy, and atomic force microscopy. The antifouling (AF) and fouling-release (FR) properties of the coatings were tested against the model organisms Cobetia marina and Navicula perminuta in laboratory-scale dynamic accumulation assays as well as in a dynamic short-term field exposure (DSFE) in the marine environment. In addition, the hydration of the coatings and their susceptibility toward silt uptake were evaluated, revealing a strong correlation between water uptake, silt incorporation, and field assay performance. While all glycol derivatives showed good resistance in laboratory settlement experiments, PPGMA turned out to be less susceptible to silt incorporation and outperformed PEGMA and PG4MA in the DSFE assay.
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Affiliation(s)
- Robin Wanka
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum, 44780 Bochum, Germany
- Center for Protein Diagnostics (ProDi), Ruhr-University Bochum, 44780 Bochum, Germany
| | - Florian Koschitzki
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum, 44780 Bochum, Germany
| | - Vuk Puzovic
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum, 44780 Bochum, Germany
| | - Thorben Pahl
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum, 44780 Bochum, Germany
| | - Emily Manderfeld
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum, 44780 Bochum, Germany
| | - Kelli Z Hunsucker
- Center for Corrosion & Biofouling, Florida Institute of Technology, Melbourne, Florida 32901, United States
| | - Geoffrey W Swain
- Center for Corrosion & Biofouling, Florida Institute of Technology, Melbourne, Florida 32901, United States
| | - Axel Rosenhahn
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum, 44780 Bochum, Germany
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8
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Balasubramaniam A, Manderfeld E, Krause LMK, Wanka R, Schwarze J, Beyer CD, Rosenhahn A. Visible light-induced controlled surface grafting polymerization of hydroxyethyl methacrylate from isopropylthioxanthone semipinacol-terminated organic monolayers. Polym Chem 2021. [DOI: 10.1039/d0py01410a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Reaction scheme of the visible light-induced controlled surface grafting polymerization of methacrylate monomers onto organosilane-coated silicon initiated by previously coupled dormant ITXSP groups.
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Affiliation(s)
| | - Emily Manderfeld
- Analytical Chemistry – Biointerfaces
- Ruhr University Bochum
- 44780 Bochum
- Germany
| | - Lutz M. K. Krause
- Analytical Chemistry – Biointerfaces
- Ruhr University Bochum
- 44780 Bochum
- Germany
| | - Robin Wanka
- Analytical Chemistry – Biointerfaces
- Ruhr University Bochum
- 44780 Bochum
- Germany
| | - Jana Schwarze
- Analytical Chemistry – Biointerfaces
- Ruhr University Bochum
- 44780 Bochum
- Germany
| | - Cindy D. Beyer
- Analytical Chemistry – Biointerfaces
- Ruhr University Bochum
- 44780 Bochum
- Germany
| | - Axel Rosenhahn
- Analytical Chemistry – Biointerfaces
- Ruhr University Bochum
- 44780 Bochum
- Germany
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9
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Wanka R, Koc J, Clarke J, Hunsucker KZ, Swain GW, Aldred N, Finlay JA, Clare AS, Rosenhahn A. Sol-Gel-Based Hybrid Materials as Antifouling and Fouling-Release Coatings for Marine Applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:53286-53296. [PMID: 33180471 DOI: 10.1021/acsami.0c15288] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Hybrid materials (HMs) offer unique properties as they combine inorganic and organic components into a single material. Here, we developed HM coatings for marine antifouling applications using sol-gel chemistry and naturally occurring polysaccharides. The coatings were characterized by spectroscopic ellipsometry, contact angle goniometry, AFM, and ATR-FTIR, and their stability was tested in saline media. Marine antifouling and fouling-release properties were tested in laboratory assays against the settlement of larvae of the barnacle Balanus improvisus and against the settlement and removal of the diatom Navicula incerta. Furthermore, laboratory data were confirmed in short-term dynamic field assays in Florida, USA. All hybrid coatings revealed a superior performance in the assays compared to a hydrophobic reference. Within the hybrids, those with the highest degree of hydrophilicity and negative net charge across the surface performed best. Alginate and heparin showed good performance, making these hybrid materials promising building blocks for fouling-resistant coatings.
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Affiliation(s)
- Robin Wanka
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, Bochum 44780, Germany
| | - Julian Koc
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, Bochum 44780, Germany
| | - Jessica Clarke
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Kelli Z Hunsucker
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, Florida 32901, United States
| | - Geoffrey W Swain
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, Florida 32901, United States
| | - Nick Aldred
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
- School of Life Sciences, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, United Kingdom
| | - John A Finlay
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Anthony S Clare
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Axel Rosenhahn
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, Bochum 44780, Germany
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10
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Krause LMK, Koc J, Rosenhahn B, Rosenhahn A. Fully Convolutional Neural Network for Detection and Counting of Diatoms on Coatings after Short-Term Field Exposure. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:10022-10030. [PMID: 32663392 DOI: 10.1021/acs.est.0c01982] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
While the use of deep learning is a valuable technology for automatic detection systems for medical data and images, the biofouling community is still lacking an analytical tool for the detection and counting of diatoms on samples after short-term field exposure. In this work, a fully convolutional neural network was implemented as a fast and simple approach to detect diatoms on two-channel (fluorescence and phase-contrast) microscopy images by predicting bounding boxes. The developed approach performs well with only a small number of trainable parameters and a F1 score of 0.82. Counting diatoms was evaluated on a data set of 600 microscopy images of three different surface chemistries (hydrophilic and hydrophobic) and is very similar to counting by humans while demanding only a fraction of the analysis time.
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Affiliation(s)
- Lutz M K Krause
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44801 Bochum, Germany
| | - Julian Koc
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44801 Bochum, Germany
| | - Bodo Rosenhahn
- Institute for Information Processing, Leibniz University Hannover, 30167 Hannover, Germany
| | - Axel Rosenhahn
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44801 Bochum, Germany
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11
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Koschitzki F, Wanka R, Sobota L, Koc J, Gardner H, Hunsucker KZ, Swain GW, Rosenhahn A. Amphiphilic Dicyclopentenyl/Carboxybetaine-Containing Copolymers for Marine Fouling-Release Applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:34148-34160. [PMID: 32567832 DOI: 10.1021/acsami.0c07599] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Zwitterionic materials received great attention in recent studies due to their high antifouling potential, though their application in practical coatings is still challenging. Amphiphilic polymers have been proven to be an effective method to combat fouling in the marine environment. This study reports the incorporation of small amounts of zwitterionic carboxybetaine methacrylate (CBMA) into hydrophobic ethylene glycol dicyclopentenyl ether acrylate (DCPEA). A new set of copolymers with varying amphiphilicities was synthesized and coated on chemically modified glass substrates. The antifouling capabilities were assessed against the diatom Navicula perminuta and multiple species in the field. Unsurprisingly, high diatom densities were observed on the hydrophobic control coatings. The integration of small zwitterionic contents of only ∼5 wt % was already sufficient to rapidly form a hydrophilic interface that led to a strong reduction of fouling. Ultralow fouling was also observed for the pure zwitterionic coatings in laboratory experiments, but it failed when tested in the real ocean environment. We noticed that the ability to absorb large amounts of water and the diffuse nature of the interphase correlate with the adsorption of silt, which can mask the hydrophilic chemistries and facilitate the settlement of organisms. The amphiphilic coatings showed low fouling in dynamic short-term field exposures, which could be explained by the reduced tendency of the coatings for sediment adsorption.
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Affiliation(s)
- Florian Koschitzki
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - Robin Wanka
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - Lennart Sobota
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - Julian Koc
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - Harrison Gardner
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, Florida 32901, United States
| | - Kelli Z Hunsucker
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, Florida 32901, United States
| | - Geoffrey W Swain
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, Florida 32901, United States
| | - Axel Rosenhahn
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
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12
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Microfluidic accumulation assay to quantify the attachment of the marine bacterium Cobetia marina on fouling-release coatings. Biointerphases 2020; 15:031014. [DOI: 10.1116/6.0000240] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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13
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Talluri SNL, Winter RM, Salem DR. Conditioning film formation and its influence on the initial adhesion and biofilm formation by a cyanobacterium on photobioreactor materials. BIOFOULING 2020; 36:183-199. [PMID: 32281883 DOI: 10.1080/08927014.2020.1748186] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 03/16/2020] [Accepted: 03/21/2020] [Indexed: 06/11/2023]
Abstract
Although cyanobacteria are a common group of microorganisms well-suited to utilization in photobioreactors (PBRs), studies of cyanobacteria fouling and its prevention are scarce. Using a cyanobacterium, Anabaena sp. PCC 7120, which had been genetically modified to enhance linalool production, the formation of conditioning films and the effects of these on the physico-chemical surface properties of various PBR materials during initial adhesion and biofilm formation were investigated. The adhesion assay revealed that the overall attachment of Anabaena was substratum dependent and no correlation between the hydrophobicity/roughness of clean material and cell attachment was found. Surface hydrophilicity/hydrophobicity of all the materials changed within 12 h due to formation of conditioning films. ATR-FTIR spectroscopy revealed that the fractional change in protein deposition between 12 to 96 h was consistent with Anabaena cell attachment but polysaccharide deposition was material specific and did not correlate with cell attachment on the PBR materials. Also, the delay in conditioning film proteins on PVC and PTFE indicated that components other than proteins may be responsible for the decrease in contact angles on these surfaces within 12 h. This indicates the important role of the chemical nature of adsorbed conditioning films in determining the initial attachment of Anabaena to PBR materials. The lower rate of attachment of Anabaena on the hydrophilic surfaces (glass and PMMA) between 72 h to 96 h (regime 3) showed that these surfaces could potentially have low fouling characteristics at extended time scales and should be considered for further research.
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Affiliation(s)
- Suvarna N L Talluri
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
| | - Robb M Winter
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
| | - David R Salem
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
- Composites and Polymer Engineering Laboratory, South Dakota School of Mines and Technology, Rapid City, SD, USA
- Composite and Nanocomposite Advanced Manufacturing - Biomaterials Center (CNAM-Bio), South Dakota School of Mines and Technology, Rapid City, SD, USA
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14
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Wanka R, Finlay JA, Nolte KA, Koc J, Jakobi V, Anderson C, Clare AS, Gardner H, Hunsucker KZ, Swain GW, Rosenhahn A. Fouling-Release Properties of Dendritic Polyglycerols against Marine Diatoms. ACS APPLIED MATERIALS & INTERFACES 2018; 10:34965-34973. [PMID: 30248259 DOI: 10.1021/acsami.8b12017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Dendritic polyglycerols (PGs) were grafted onto surfaces using a ring-opening polymerization reaction, and the fouling-release properties against marine organisms were determined. The coatings were characterized by spectroscopic ellipsometry, contact angle goniometry, ATR-FTIR, and stability tests in different aqueous media. A high resistance toward the attachment of different proteins was found. The PG coatings with three different thicknesses were tested in a laboratory assay against the diatom Navicula incerta and in a field assay using a rotating disk. Under static conditions, the PG coatings did not inhibit the initial attachment of diatoms, but up to 94% of attached diatoms could be removed from the coatings after exposure to a shear stress of 19 Pa. Fouling release was found to be enhanced if the coatings were sufficiently thick. The excellent fouling-release properties were supported in dynamic field-immersion experiments in which the samples were continually exposed to a shear stress of 0.18 Pa.
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Affiliation(s)
- Robin Wanka
- Analytical Chemistry - Biointerfaces , Ruhr-University Bochum , 44780 Bochum , Germany
| | - John A Finlay
- School of Natural and Environmental Sciences , Newcastle University , Newcastle upon Tyne NE1 7RU , United Kingdom
| | - Kim A Nolte
- Analytical Chemistry - Biointerfaces , Ruhr-University Bochum , 44780 Bochum , Germany
| | - Julian Koc
- Analytical Chemistry - Biointerfaces , Ruhr-University Bochum , 44780 Bochum , Germany
| | - Victoria Jakobi
- Analytical Chemistry - Biointerfaces , Ruhr-University Bochum , 44780 Bochum , Germany
| | - Charlotte Anderson
- School of Natural and Environmental Sciences , Newcastle University , Newcastle upon Tyne NE1 7RU , United Kingdom
| | - Anthony S Clare
- School of Natural and Environmental Sciences , Newcastle University , Newcastle upon Tyne NE1 7RU , United Kingdom
| | - Harrison Gardner
- Center for Corrosion and Biofouling Control , Florida Institute of Technology , Melbourne , Florida 32901 , United States
| | - Kelli Z Hunsucker
- Center for Corrosion and Biofouling Control , Florida Institute of Technology , Melbourne , Florida 32901 , United States
| | - Geoffrey W Swain
- Center for Corrosion and Biofouling Control , Florida Institute of Technology , Melbourne , Florida 32901 , United States
| | - Axel Rosenhahn
- Analytical Chemistry - Biointerfaces , Ruhr-University Bochum , 44780 Bochum , Germany
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15
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Parallelized microfluidic diatom accumulation assay to test fouling-release coatings. Biointerphases 2018; 13:041007. [PMID: 30021446 DOI: 10.1116/1.5034090] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Assessing the efficiency of the next generation of protective marine coatings is highly relevant for their optimization. In this paper, a parallelized microfluidic testing device is presented to quantify the accumulation of a model organism (Navicula perminuta) under constant laminar flow. Using automated microscopy in conjunction with image analysis, the adhesion densities on the tested surfaces could be determined after exposure to a flow of suspended algae for 90 min. The optimized protocol for the assay is presented, and the reproducibility of the densities of attached diatoms was verified on four identical surfaces (self-assembled dodecanethiol monolayers). A set of well-characterized self-assembled monolayers with different chemical terminations was used to validate the performance of the assay and its capability to discriminate diatom accumulation on different surface chemistries under dynamic conditions. The observed trends are in good agreement with previously published results obtained in single channel accumulation and detachment assays. To demonstrate the practical relevance of the dynamic experiment, diatom attachment on four technically relevant silicone coatings with different fouling-release properties could clearly be distinguished.
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16
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Nolte KA, Koc J, Barros JM, Hunsucker K, Schultz MP, Swain GW, Rosenhahn A. Dynamic field testing of coating chemistry candidates by a rotating disk system. BIOFOULING 2018; 34:398-409. [PMID: 29734815 DOI: 10.1080/08927014.2018.1459578] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Accepted: 03/26/2018] [Indexed: 06/08/2023]
Abstract
Quick and reliable testing is crucial for the development of new fouling release (FR) coatings. Exposure of these coatings to natural multispecies communities is essential in evaluating their efficacy. To this end, we present a rotating disk setup for dynamic field exposure. To achieve a well-defined flow on the surface of the disk, an easy to use sample mounting system was developed that provides a smooth and even surface. We related the angular velocity of the disk to the wall shear stress on the surface with a hydrodynamic model. The wall shear stress was adjusted to values previously found to be suitable to discriminate dynamic diatom attachment on different coating chemistries in the lab. The effect of the dynamic conditions was shown by comparing polystyrene slides under static and dynamic exposure. Using a set of self-assembled monolayers, the discrimination potential of the assay in a multispecies environment was demonstrated.
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Affiliation(s)
- Kim A Nolte
- a Analytical Chemistry-Biointerfaces , Ruhr-Universität Bochum , Bochum , Germany
| | - Julian Koc
- a Analytical Chemistry-Biointerfaces , Ruhr-Universität Bochum , Bochum , Germany
| | - J M Barros
- b Naval Architecture & Ocean Engineering , United States Naval Academy , Annapolis , MD , USA
| | - Kelli Hunsucker
- c Center for Corrosion and Biofouling Control , Florida Institute of Technology , Melbourne , FL , USA
| | - Michael P Schultz
- b Naval Architecture & Ocean Engineering , United States Naval Academy , Annapolis , MD , USA
| | - G W Swain
- c Center for Corrosion and Biofouling Control , Florida Institute of Technology , Melbourne , FL , USA
| | - Axel Rosenhahn
- a Analytical Chemistry-Biointerfaces , Ruhr-Universität Bochum , Bochum , Germany
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17
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Jakobi V, Schwarze J, Finlay JA, Nolte KA, Spöllmann S, Becker HW, Clare AS, Rosenhahn A. Amphiphilic Alginates for Marine Antifouling Applications. Biomacromolecules 2018; 19:402-408. [DOI: 10.1021/acs.biomac.7b01498] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Victoria Jakobi
- Analytical
Chemistry - Biointerfaces, Ruhr-University Bochum, 44780 Bochum, Germany
| | - Jana Schwarze
- Analytical
Chemistry - Biointerfaces, Ruhr-University Bochum, 44780 Bochum, Germany
| | - John A. Finlay
- School
of Natural and Environmental Sciences, Newcastle University, Newcastle
upon Tyne NE1 7RU, United Kingdom
| | - Kim A. Nolte
- Analytical
Chemistry - Biointerfaces, Ruhr-University Bochum, 44780 Bochum, Germany
| | - Stephan Spöllmann
- RUBION,
Central unit for ion beams and radionuclides, University of Bochum, 44780 Bochum, Germany
| | - Hans-Werner Becker
- RUBION,
Central unit for ion beams and radionuclides, University of Bochum, 44780 Bochum, Germany
| | - Anthony S. Clare
- School
of Natural and Environmental Sciences, Newcastle University, Newcastle
upon Tyne NE1 7RU, United Kingdom
| | - Axel Rosenhahn
- Analytical
Chemistry - Biointerfaces, Ruhr-University Bochum, 44780 Bochum, Germany
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18
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Nolte KA, Schwarze J, Rosenhahn A. Microfluidic accumulation assay probes attachment of biofilm forming diatom cells. BIOFOULING 2017; 33:531-543. [PMID: 28675050 DOI: 10.1080/08927014.2017.1328058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 05/02/2017] [Indexed: 06/07/2023]
Abstract
Testing of fouling release (FR) technologies is of great relevance for discovery of the next generation of protective marine coatings. In this paper, an accumulation assay to test diatom interaction under laminar flow with the model organism Navicula perminuta is introduced. Using time lapse microscopy with large area sampling allows determination of the accumulation kinetics of the diatom on three model surfaces with different surface properties at different wall shear stresses. The hydrodynamic conditions within the flow cell are described and a suitable shear stress range to perform accumulation experiments is identified at which statistically significant discrimination of surfaces is possible. The observed trends compare well to published adhesion preferences of N. perminuta. Also, previously determined trends of critical wall shear stresses required for cell removal from the same set of functionalized interfaces shows consistent trends. Initial attachment mediated by extracellular polymeric substances (EPS) present outside the diatoms leads to the conclusion that the FR potential of the tested coating candidates can be deducted from dynamic accumulation experiments under well-defined hydrodynamic conditions. As well as testing new coating candidates for their FR properties, monitoring of the adhesion process under flow provides additional information on the mechanism and geometry of attachment and the population kinetics.
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Affiliation(s)
- Kim A Nolte
- a Analytical Chemistry - Biointerfaces , Ruhr- Universität Bochum , Bochum , Germany
| | - Jana Schwarze
- a Analytical Chemistry - Biointerfaces , Ruhr- Universität Bochum , Bochum , Germany
| | - Axel Rosenhahn
- a Analytical Chemistry - Biointerfaces , Ruhr- Universität Bochum , Bochum , Germany
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19
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Yang W, Lin P, Cheng D, Zhang L, Wu Y, Liu Y, Pei X, Zhou F. Contribution of Charges in Polyvinyl Alcohol Networks to Marine Antifouling. ACS APPLIED MATERIALS & INTERFACES 2017; 9:18295-18304. [PMID: 28488428 DOI: 10.1021/acsami.7b04079] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Semi-interpenetrated polyvinyl alcohol polymer networks (SIPNs) were prepared by integrating various charged components into polyvinyl alcohol polymer. Contact angle measurement, attenuated total reflection Fourier transform infrared spectroscopy, field emission scanning electron microscopy, and tensile tests were used to characterize the physicochemical properties of the prepared SIPNs. To investigate the contribution of charges to marine antifouling, the adhesion behaviors of green algae Dunaliella tertiolecta and diatoms Navicula sp. in the laboratory and of the actual marine animals in field test were studied for biofouling assays. The results suggest that less algae accumulation densities are observed for neutral-, anionic-, and zwitterionic-component-integrated SIPNs. However, for the cationic SIPNs, despite the hydration shell induced by the ion-dipole interaction, the resistance to biofouling largely depends on the amount of cationic component because of the possible favorable electrostatic attraction between the cationic groups in SIPNs and the negatively charged algae. Considering that the preparation of novel nontoxic antifouling coating is a long-standing and cosmopolitan industrial challenge, the SIPNs may provide a useful reference for marine antifouling and some other relevant fields.
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Affiliation(s)
- Wufang Yang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, China
- University of Chinese Academy of Sciences , Beijing 100049, China
| | - Peng Lin
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, China
- University of Chinese Academy of Sciences , Beijing 100049, China
| | - Daocang Cheng
- China Nuclear Power Design Company Ltd. , Shenzhen 518172, China
| | - Longzhou Zhang
- China Nuclear Power Design Company Ltd. , Shenzhen 518172, China
| | - Yang Wu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, China
| | - Yupeng Liu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, China
| | - Xiaowei Pei
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, China
| | - Feng Zhou
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, China
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20
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Jakobi V, Salmen P, Paulus M, Tolan M, Rosenhahn A. Compositional fingerprint of soy sauces via hydrophobic surface interaction. Food Chem 2017; 218:256-260. [DOI: 10.1016/j.foodchem.2016.09.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 07/07/2016] [Accepted: 09/06/2016] [Indexed: 10/21/2022]
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21
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Kim KS, Gunari N, MacNeil D, Finlay J, Callow M, Callow J, Walker GC. Aqueous-Based Fabrication of Low-VOC Nanostructured Block Copolymer Films as Potential Marine Antifouling Coatings. ACS APPLIED MATERIALS & INTERFACES 2016; 8:20342-20351. [PMID: 27388921 DOI: 10.1021/acsami.6b04629] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The ability to fabricate nanostructured films by exploiting the phenomenon of microphase separation has made block copolymers an invaluable tool for a wide array of coating applications. Standard approaches to engineering nanodomains commonly involve the application of organic solvents, either through dissolution or annealing protocols, resulting in the release of volatile organic compounds (VOCs). In this paper, an aqueous-based method of fabricating low-VOC nanostructured block copolymer films is presented. The reported procedure allows for the phase transfer of water insoluble triblock copolymer, poly(styrene-block-2 vinylpyridine-block-ethylene oxide) (PS-b-P2VP-b-PEO), from a water immiscible phase to an aqueous environment with the assistance of a diblock copolymeric phase transfer agent, poly(styrene-block-ethylene oxide) (PS-b-PEO). Phase transfer into the aqueous phase results in self-assembly of PS-b-P2VP-b-PEO into core-shell-corona micelles, which are characterized by dynamic light scattering techniques. The films that result from coating the micellar solution onto Si/SiO2 surfaces exhibit nanoscale features that disrupt the ability of a model foulant, a zoospore of Ulva linza, to settle. The multilayered architecture consists of a pH-responsive P2VP-"shell" which can be stimulated to control the size of these features. The ability of these nanostructured thin films to resist protein adsorption and serve as potential marine antifouling coatings is supported through atomic force microscopy (AFM) and analysis of the settlement of Ulva linza zoospore. Field trials of the surfaces in a natural environment show the inhibition of macrofoulants for 1 month.
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Affiliation(s)
- Kris S Kim
- Department of Chemistry, University of Toronto , Toronto, Ontario M5S 3H4, Canada
| | - Nikhil Gunari
- Department of Chemistry, University of Toronto , Toronto, Ontario M5S 3H4, Canada
| | - Drew MacNeil
- Department of Chemistry, University of Toronto , Toronto, Ontario M5S 3H4, Canada
| | - John Finlay
- School of Biosciences, University of Birmingham , Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Maureen Callow
- School of Biosciences, University of Birmingham , Edgbaston, Birmingham B15 2TT, United Kingdom
| | - James Callow
- School of Biosciences, University of Birmingham , Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Gilbert C Walker
- Department of Chemistry, University of Toronto , Toronto, Ontario M5S 3H4, Canada
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22
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Yandi W, Mieszkin S, di Fino A, Martin-Tanchereau P, Callow ME, Callow JA, Tyson L, Clare AS, Ederth T. Charged hydrophilic polymer brushes and their relevance for understanding marine biofouling. BIOFOULING 2016; 32:609-25. [PMID: 27125564 DOI: 10.1080/08927014.2016.1170816] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 03/22/2016] [Indexed: 05/28/2023]
Abstract
The resistance of charged polymers to biofouling was investigated by subjecting cationic (PDMAEMA), anionic (PSPMA), neutral (PHEMA-co-PEG10MA), and zwitterionic (PSBMA) brushes to assays testing protein adsorption; attachment of the marine bacterium Cobetia marina; settlement and adhesion strength of zoospores of the green alga Ulva linza; settlement of barnacle (Balanus amphitrite and B. improvisus) cypris larvae; and field immersion tests. Several results go beyond the expected dependence on direct electrostatic attraction; PSPMA showed good resistance towards attachment of C. marina, low settlement and adhesion of U. linza zoospores, and significantly lower biofouling than on PHEMA-co-PEG10MA or PSBMA after a field test for one week. PDMAEMA showed potential as a contact-active anti-algal coating due to its capacity to damage attached spores. However, after field testing for eight weeks, there were no significant differences in biofouling coverage among the surfaces. While charged polymers are unsuitable as antifouling coatings in the natural environment, they provide valuable insights into fouling processes, and are relevant for studies due to charging of nominally neutral surfaces.
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Affiliation(s)
- Wetra Yandi
- a Division of Molecular Physics , IFM, Linköping University , Linköping , Sweden
| | - Sophie Mieszkin
- b School of Biosciences , University of Birmingham , Birmingham , UK
| | - Alessio di Fino
- d School of Marine Science and Technology , Newcastle University , Newcastle-upon-Tyne , UK
| | - Pierre Martin-Tanchereau
- c International Paint Ltd 1 , Gateshead , UK
- e Department of Applied Sciences , Northumbria University , Newcastle-upon-Tyne , UK
| | - Maureen E Callow
- b School of Biosciences , University of Birmingham , Birmingham , UK
| | - James A Callow
- b School of Biosciences , University of Birmingham , Birmingham , UK
| | | | - Anthony S Clare
- d School of Marine Science and Technology , Newcastle University , Newcastle-upon-Tyne , UK
| | - Thomas Ederth
- a Division of Molecular Physics , IFM, Linköping University , Linköping , Sweden
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23
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Bauer S, Finlay JA, Thomé I, Nolte K, Franco SC, Ralston E, Swain GE, Clare AS, Rosenhahn A. Attachment of Algal Cells to Zwitterionic Self-Assembled Monolayers Comprised of Different Anionic Compounds. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5663-5671. [PMID: 27182766 DOI: 10.1021/acs.langmuir.6b00839] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The influence of zwitterionic self-assembled monolayers on settlement and removal of algae was studied. The monolayers were constructed either from zwitterionic thiols or from solutions of positively and negatively charged thiols. The cationic component was composed of quaternary ammonium terminated thiols and the anionic component contained sulfate or carboxylate termination. During assembly, all surfaces showed a strong tendency for equilibration of the surface charge. Settlement and adhesion assays with zoospores of Ulva linza and the diatom Navicula incerta, and field tests of the initial surface colonization revealed the relevance of charge equilibration for the biological inertness of the prepared surfaces.
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Affiliation(s)
- S Bauer
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum , 44780 Bochum, Germany
- Institute of Functional Interfaces, Karlsruhe Institute of Technology , 76021 Karlsruhe, Germany
- Applied Physical Chemistry, Ruprecht-Karls-University Heidelberg , 69120 Heidelberg, Germany
| | - J A Finlay
- School of Marine Science and Technology, Newcastle University , Newcastle upon Tyne NE1 7RU, United Kingdom
| | - I Thomé
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum , 44780 Bochum, Germany
- Institute of Functional Interfaces, Karlsruhe Institute of Technology , 76021 Karlsruhe, Germany
- Applied Physical Chemistry, Ruprecht-Karls-University Heidelberg , 69120 Heidelberg, Germany
| | - K Nolte
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum , 44780 Bochum, Germany
| | - S C Franco
- School of Marine Science and Technology, Newcastle University , Newcastle upon Tyne NE1 7RU, United Kingdom
| | - E Ralston
- Center of Corrosion and Biofouling Control, Florida Institute of Technology , Melbourne, Florida 32901, United States
| | - G E Swain
- Center of Corrosion and Biofouling Control, Florida Institute of Technology , Melbourne, Florida 32901, United States
| | - A S Clare
- School of Marine Science and Technology, Newcastle University , Newcastle upon Tyne NE1 7RU, United Kingdom
| | - A Rosenhahn
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum , 44780 Bochum, Germany
- Institute of Functional Interfaces, Karlsruhe Institute of Technology , 76021 Karlsruhe, Germany
- Applied Physical Chemistry, Ruprecht-Karls-University Heidelberg , 69120 Heidelberg, Germany
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24
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Sargın İ, Arslan G, Erzengin M. Interactions of bovine serum albumin with humic acid–Cu(II) aggregates in poly(hydroxyethylmethacrylate) cryogel column. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.03.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Bauer S, Alles M, Arpa-Sancet MP, Ralston E, Swain GW, Aldred N, Clare AS, Finlay JA, Callow ME, Callow JA, Rosenhahn A. Resistance of Amphiphilic Polysaccharides against Marine Fouling Organisms. Biomacromolecules 2016; 17:897-904. [DOI: 10.1021/acs.biomac.5b01590] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- S. Bauer
- Analytical
Chemistry - Biointerfaces, Ruhr-University Bochum, 44780 Bochum, Germany
- Institute
of Functional Interfaces, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
- Applied
Physical Chemistry, Ruprecht-Karls-University Heidelberg, 69120 Heidelberg, Germany
| | - M. Alles
- Institute
of Functional Interfaces, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
- Applied
Physical Chemistry, Ruprecht-Karls-University Heidelberg, 69120 Heidelberg, Germany
| | - M. P. Arpa-Sancet
- Institute
of Functional Interfaces, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
- Applied
Physical Chemistry, Ruprecht-Karls-University Heidelberg, 69120 Heidelberg, Germany
| | - E. Ralston
- Center
for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, Florida, United States
| | - G. W. Swain
- Center
for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, Florida, United States
| | - N. Aldred
- School
of Marine Science and Technology, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - A. S. Clare
- School
of Marine Science and Technology, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - J. A. Finlay
- School
of Marine Science and Technology, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
- School
of
Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - M. E. Callow
- School
of
Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - J. A. Callow
- School
of
Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - A. Rosenhahn
- Analytical
Chemistry - Biointerfaces, Ruhr-University Bochum, 44780 Bochum, Germany
- Institute
of Functional Interfaces, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
- Applied
Physical Chemistry, Ruprecht-Karls-University Heidelberg, 69120 Heidelberg, Germany
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26
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Shivapooja P, Yu Q, Orihuela B, Mays R, Rittschof D, Genzer J, López GP. Modification of Silicone Elastomer Surfaces with Zwitterionic Polymers: Short-Term Fouling Resistance and Triggered Biofouling Release. ACS APPLIED MATERIALS & INTERFACES 2015; 7:25586-25591. [PMID: 26554418 DOI: 10.1021/acsami.5b09199] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present a method for dual-mode-management of biofouling by modifying surface of silicone elastomers with zwitterionic polymeric grafts. Poly(sulfobetaine methacrylate) was grafted from poly(vinylmethylsiloxane) elastomer substrates using thiol-ene click chemistry and surface-initiated, controlled radical polymerization. These surfaces exhibited both fouling resistance and triggered fouling-release functionality. The zwitterionic polymers exhibited fouling resistance over short-term (∼hours) exposure to bacteria and barnacle cyprids. The biofilms that eventually accumulated over prolonged-exposure (∼days) were easily detached by applying mechanical strain to the elastomer substrate. Such dual-functional surfaces may be useful in developing environmentally and biologically friendly coatings for biofouling management on marine, industrial, and biomedical equipment because they can obviate the use of toxic compounds.
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Affiliation(s)
| | - Qian Yu
- College of Chemistry, Chemical Engineering and Material Science, Soochow University , Suzhou 215123, China
| | - Beatriz Orihuela
- Marine Science and Conservation, Duke University Marine Laboratory , Beaufort, North Carolina 28516, United States
| | - Robin Mays
- Department of Chemical and Biomolecular Engineering, North Carolina State University , Raleigh, North Carolina 27695, United States
| | - Daniel Rittschof
- Marine Science and Conservation, Duke University Marine Laboratory , Beaufort, North Carolina 28516, United States
| | - Jan Genzer
- Department of Chemical and Biomolecular Engineering, North Carolina State University , Raleigh, North Carolina 27695, United States
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27
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Vater SM, Finlay J, Callow ME, Callow JA, Ederth T, Liedberg B, Grunze M, Rosenhahn A. Holographic microscopy provides new insights into the settlement of zoospores of the green alga Ulva linza on cationic oligopeptide surfaces. BIOFOULING 2015; 31:229-239. [PMID: 25875964 DOI: 10.1080/08927014.2015.1022534] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Interaction of zoospores of Ulva linza with cationic, arginine-rich oligopeptide self-assembled monolayers (SAMs) is characterized by rapid settlement. Some spores settle (ie permanently attach) in a 'normal' manner involving the secretion of a permanent adhesive, retraction of the flagella and cell wall formation, whilst others undergo 'pseudosettlement' whereby motile spores are trapped (attached) on the SAM surface without undergoing the normal metamorphosis into a settled spore. Holographic microscopy was used to record videos of swimming zoospores in the vicinity of surfaces with different cationic oligopeptide concentrations to provide time-resolved insights into processes associated with attachment of spores. The data reveal that spore attachment rate increases with increasing cationic peptide content. Accordingly, the decrease in swimming activity in the volume of seawater above the surface accelerated with increasing surface charge. Three-dimensional trajectories of individual swimming spores showed a 'hit and stick' motion pattern, exclusively observed for the arginine-rich peptide SAMs, whereby spores were immediately trapped upon contact with the surface.
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Affiliation(s)
- Svenja M Vater
- a Applied Physical Chemistry , Ruprecht-Karls-University Heidelberg , Heidelberg , Germany
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28
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Alles M, Rosenhahn A. Microfluidic detachment assay to probe the adhesion strength of diatoms. BIOFOULING 2015; 31:469-480. [PMID: 26168802 DOI: 10.1080/08927014.2015.1061655] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Fouling release (FR) coatings are increasingly applied as an environmentally benign alternative for controlling marine biofouling. As the technology relies on removing fouling by water currents created by the motion of ships, weakening of adhesion of adherent organisms is the key design goal for improved coatings. In this paper, a microfluidic shear force assay is used to quantify how easily diatoms can be removed from surfaces. The experimental setup and the optimization of the experimental parameters to study the adhesion of the diatom Navicula perminuta are described. As examples of how varying the physico-chemical surface properties affects the ability of diatoms to bind to surfaces, a range of hydrophilic and hydrophobic self-assembled monolayers was compared. While the number of cells that attached (adhered) was barely affected by the coatings, the critical shear stress required for their removal from the surface varied significantly.
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Affiliation(s)
- M Alles
- a Applied Physical Chemistry , Ruprecht-Karls-University Heidelberg , Heidelberg , Germany
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