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Dhar M, Kara UI, Das S, Xu Y, Mandal S, Dupont RL, Boerner EC, Chen B, Yao Y, Wang X, Manna U. Design of a self-cleanable multilevel anticounterfeiting interface through covalent chemical modulation. MATERIALS HORIZONS 2023; 10:2204-2214. [PMID: 37000456 DOI: 10.1039/d3mh00180f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Counterfeit products have posed a significant threat to consumers safety and the global economy. To address this issue, extensive studies have been exploring the use of coatings with unclonable, microscale features for authentication purposes. However, the ease of readout, and the stability of these features against water, deposited dust, and wear, which are required for practical use, remain challenging. Here we report a novel class of chemically functionalizable coatings with a combination of a physically unclonable porous topography and distinct physiochemical properties (e.g., fluorescence, water wettability, and water adhesion) obtained through orthogonal chemical modifications (i.e., 1,4-conjugate addition reaction and Schiff-base reaction at ambient conditions). Unprecedentedly, a self-cleanable and physically unclonable coating is introduced to develop a multilevel anticounterfeiting interface. We demonstrate that the authentication of the fluorescent porous topography can be verified using deep learning. More importantly, the spatially selective chemical modifications can be read with the naked eye via underwater exposure and UV light illumination. Overall, the results reported in this work provide a facile basis for designing functional surfaces capable of independent and multilevel decryption of authenticity.
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Affiliation(s)
- Manideepa Dhar
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
| | - Ufuoma I Kara
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Supriya Das
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
| | - Yang Xu
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Sohini Mandal
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
| | - Robert L Dupont
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Eric C Boerner
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Boyuan Chen
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Yuxing Yao
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Xiaoguang Wang
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
- Sustainability Institute, The Ohio State University, Columbus, OH 43210, USA
| | - Uttam Manna
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Kamrup, Assam 781039, India
- Centre for Nanotechnology, School of Health Science and Technology, Indian Institute of Technology Guwahati, Kamrup, Assam 781039, India
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Hybrid superhydrophobic/hydrophilic patterns deposited on glass by laser-induced forward transfer method for efficient water harvesting. J Colloid Interface Sci 2022; 625:383-396. [PMID: 35724461 DOI: 10.1016/j.jcis.2022.06.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 05/27/2022] [Accepted: 06/07/2022] [Indexed: 11/22/2022]
Abstract
In recent years, the combination of factors such as growing population and global climate change has resulted in freshwater shortages. Therefore, water harvesting from the atmospheric fog in order to produce freshwater supply inspired by nature has received much attention. The water harvesting capability of the creatures is significantly based on the combination of both wettability states on their surfaces. In this study, a facile physicochemical hybrid method was used for the fabrication of glass surfaces with contrast wettability. First, fractal and regular repeated geometric patterns were deposited on a glass substrate using brass sheet as donor material by laser induced forward transfer (LIFT) method. Subsequently, stearic acid (SA) treatment was used to convert the wettability of the superhydrophilic (SHL) deposited patterns on glass to superhydrophobic. In order to investigate the effect of the shape of designed patterns on glass surfaces in the water harvesting efficiency, the amount of collected water for a period of time from untreated hydrophilic (HL) glass, superhydrophobic (SHB) glass and hybrid superhydrophobic/hydrophilic (SHB-HL) surfaces were measured. The obtained results indicate that the hybrid of superhydrophobic and hydrophilic regions and selecting the optimal pattern can improve the water harvesting performance by up to 300%.
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Fang H, Qi X, Zhou S, Yang S, Hang C, Tian Y, Wang C. High-Efficient Vacuum Ultraviolet-Ozone Assist-Deposited Polydopamine for Poly(lactic- co-glycolic acid)-Coated Pure Zn toward Biodegradable Cardiovascular Stent Applications. ACS APPLIED MATERIALS & INTERFACES 2022; 14:3536-3550. [PMID: 34941257 DOI: 10.1021/acsami.1c21567] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Zinc is a prospective metal for biodegradable cardiovascular stent applications, but the excessively released Zn2+ during degradation remains a huge challenge in biocompatibility. Considerable efforts have been made to develop a high-efficient surface modification method, while maintaining adhesion strength, mechanical support, and vascular compatibility. Biomimetic polydopamine (PDA) can adhere to Zn tightly, subsequently achieving robust chemical bonds with poly(lactic-co-glycolic acid) (PLGA) coating. However, the deposition of PDA on Zn depends on the controlled conditions such as a sensitive pH and a long period of time. Herein, we introduce vacuum ultraviolet-ozone (VUV/O3) assist-deposition technology to accelerate the polymerization of PDA on pure Zn, which shortens the process to 40 min at a moderate pH of 8.5 and improves the deposition rate by 1-2 orders of magnitude under sufficient active oxygen species (ROS). Additionally, PLGA/PDA coating enhances the corrosion resistance, and their effective protection maintains the mechanical properties after long-term corrosion. Moreover, the controlled Zn2+ release contributes to the superior in vitro biocompatibility, which inhibits the hemolysis rate and smooth muscle cell (SMC) proliferation. The enhanced endothelial cell (EC) proliferation is promising to promote the re-endothelialization, avoiding in-stent restenosis and neointimal hyperplasia. Such modified Zn might be a viable candidate for the treatment of cardiovascular diseases.
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Affiliation(s)
- Hui Fang
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - Xiaoyun Qi
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - Shicheng Zhou
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - Shuhan Yang
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - Chunjin Hang
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - Yanhong Tian
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - Chenxi Wang
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
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Zhai X, Cheng S, Wang H, Zhang C, Li Y, Dong W. Fast preparation of Fe 3O 4@polydopamine/Au for highly efficient degradation of tetracycline. CHEMOSPHERE 2021; 285:131523. [PMID: 34265702 DOI: 10.1016/j.chemosphere.2021.131523] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 07/05/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
This work reported the fast synthesis of magnetic polydopamine Au-Fenton catalyst (Fe3O4@PDA/Au) under UV irradiation at 365 nm. The microstructure of prepared nanocomposites was characterized by various techniques. The effects of several key factors (pH values, H2O2 content and TC concentration) of tetracycline (TC) degradation were evaluated. The results revealed that the TC and total organic carbon (TOC) removal rate reached up to 98.16% and 93.14% within 300 min under optimal conditions (pH 3, H2O2 80 μL, TC concentration 20 mg/L). Besides, HO radicals were generated during the Fenton-like degradation process and the plausible degradation mechanism was discussed. Moreover, Fe3O4@PDA/Au catalyst retained excellent catalytic capacity (TC removal rate 96.94% and TOC removal rate 87.69%) and exhibited fantastic stability after six cycles. Moreover, metal ions leaching was evaluated (0.023 mg/L). Altogether, the novel Fe3O4@PDA/Au Fenton-like catalyst is highly promising for wastewater management.
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Affiliation(s)
- Xinrang Zhai
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Siyao Cheng
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Hao Wang
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Cheng Zhang
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Yan Li
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Wei Dong
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, 210094, China.
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Behboodi-Sadabad F, Li S, Lei W, Liu Y, Sommer T, Friederich P, Sobek C, Messersmith PB, Levkin PA. High-throughput screening of multifunctional nanocoatings based on combinations of polyphenols and catecholamines. Mater Today Bio 2021; 10:100108. [PMID: 33912825 PMCID: PMC8063910 DOI: 10.1016/j.mtbio.2021.100108] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 02/22/2021] [Accepted: 02/27/2021] [Indexed: 10/31/2022] Open
Abstract
Biomimetic surface coatings based on plant polyphenols and catecholamines have been used broadly in a variety of applications. However, the lack of a rational cost-effective platform for screening these coatings and their properties limits the true potential of these functional materials to be unleashed. Here, we investigated the oxidation behavior and coating formation ability of a library consisting of 45 phenolic compounds and catecholamines. UV-vis spectroscopy demonstrated significant acceleration of oxidation and polymerization under UV irradiation. We discovered that several binary mixtures resulted in non-additive behavior (synergistic or antagonistic effect) yielding much thicker or thinner coatings than individual compounds measured by ellipsometry. To investigate the properties of coatings derived from new combinations, we used a miniaturized high-throughput strategy to screen 2,532 spots coated with single, binary, and ternary combinations of coating precursors in one run. We evaluated the use of machine learning models to learn the relation between the chemical structure of the precursors and the thickness of the nanocoatings. Formation and stability of nanocoatings were investigated in a high-throughput manner via discontinuous dewetting. 30 stable combinations (hits) were used to tune the surface wettability and to form water droplet microarray and spot size gradients of water droplets on the coated surface. No toxicity was observed against eukaryotic HeLa cells and Pseudomonas aeruginosa (strain PA30) bacteria after 24 h incubation at 37 °C. The strategy introduced here for high-throughput screening of nanocoatings derived from combinations of coating precursors enables the discovery of new functional materials for various applications in science and technology in a cost-effective miniaturized manner.
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Affiliation(s)
- F Behboodi-Sadabad
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, 76344, Germany
| | - S Li
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, 76344, Germany
| | - W Lei
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, 76344, Germany
| | - Y Liu
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, 76344, Germany
| | - T Sommer
- Institute of Theoretical Informatics, Karlsruhe Institute of Technology (KIT), Am Fasanengarten 5, Karlsruhe, 76131, Germany
| | - P Friederich
- Institute of Theoretical Informatics, Karlsruhe Institute of Technology (KIT), Am Fasanengarten 5, Karlsruhe, 76131, Germany.,Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - C Sobek
- Departments of Bioengineering and Materials Science and Engineering, University of California Berkeley, CA, 94720-1760, USA
| | - P B Messersmith
- Departments of Bioengineering and Materials Science and Engineering, University of California Berkeley, CA, 94720-1760, USA.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - P A Levkin
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, 76344, Germany
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Seddon WD, Alfhaid L, Dunbar ADF, Geoghegan M, Williams NH. Adhesion of Grafted-to Polyelectrolyte Brushes Functionalized with Calix[4]resorcinarene and Deposited as a Monolayer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13843-13852. [PMID: 33172276 DOI: 10.1021/acs.langmuir.0c02236] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Polyelectrolyte adhesives, either poly[2-(dimethylamino)ethyl methacrylate] or poly(methacrylic acid), functionalized with a surface-active calix[4]resorcinarene were grafted onto silicon wafers. Adhesion studies on these grafted-to brushes using polyelectrolyte hydrogels of opposite charge showed that it is the calix[4]resorcinarene, rather than adsorption of polyelectrolyte monomers, that adheres the brush to the silicon substrate. The adhesion measured was similar to that measured using polymers grafted from the surface, and was stronger than a control layer of poly(vinyl acetate) under the same test conditions. The limiting factor was determined to be adhesive failure at the hydrogel-brush interface, rather than the brush-silicon interface. Therefore, the adhesion has not been adversely affected by changing from a grafted-from to a grafted-to brush, demonstrating the possibility of a one-pot approach to creating switchable adhesives.
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Affiliation(s)
- William D Seddon
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K
- Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, U.K
| | - Latifah Alfhaid
- Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, U.K
| | - Alan D F Dunbar
- Department of Chemical and Biological Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, U.K
| | - Mark Geoghegan
- Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, U.K
| | - Nicholas H Williams
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K
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Wang J, Wang H, Yue D. Insights into Mechanism of Hypochlorite-Induced Functionalization of Polymers toward Separating BFR-Containing Components from Microplastics. ACS APPLIED MATERIALS & INTERFACES 2020; 12:36755-36767. [PMID: 32692926 DOI: 10.1021/acsami.0c09586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Surface functionalization of polymers is significant for an emerging flotation technique for separation of microplastics toward the recycling of plastic wastes. In this study, the hypochlorite-induced functionalization of polymers, including ABS, PMMA, PS, and PVC polymers, was intensively investigated. Afterward, its emerging application in flotation separation of microplastic mixtures was assessed based on a Box-Behnken design of the response surface methodology. The functionalization favorably induced decreases in the contact angle and zeta potential of polymers, suggesting hydrophilic and negatively charged surfaces. Particularly, the functionalization of ABS polymers was the most effective, leading to the obviously decreased contact angle (from 92.5° to 67.8°) and zeta potential (from -26.4 mV to -41.7 mV) at neutral condition. The major mechanism for these variations was the oxidation of the sp3-C and butenyl group by hydroxyl radical and the hydrolysis of cyano group, which introduced the hydroxyl, carboxyl, and amide groups and rough topographies on the surface of ABS polymers. Oxygen functionalities introduced on the surfaces of other polymers were far less than those of ABS polymers. This selectivity inspired us to apply the functionalization in flotation separation of ABS microplastics from microplastic mixtures. After functionalization, ABS microplastics showed a significantly decreased floatability in flotation tests since the hydrophilic surface was repulsive to the adhesion of air bubbles. An empirical model was built to optimize the separation efficiency using the overall desirability function. Under optimum conditions, ABS microplastics were efficiently separated, and their removal rate, recovery, and purity were 99.8%, 99.8%, and >99.9%, respectively. These findings provide significant insights into the mechanism of the functionalization of polymers and show a promising prospect for pollution control of plastic wastes.
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Affiliation(s)
- Jianchao Wang
- School of Environment, Tsinghua University, Beijing 100084, P. R. China
| | - Hui Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan P. R. China
| | - Dongbei Yue
- School of Environment, Tsinghua University, Beijing 100084, P. R. China
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