1
|
Kmetík M, Kopal I, Král M, Dendisová M. Characterization of Modified PVDF Membranes Using Fourier Transform Infrared and Raman Microscopy and Infrared Nanoimaging: Challenges and Advantages of Individual Methods. ACS OMEGA 2024; 9:24685-24694. [PMID: 38882160 PMCID: PMC11170652 DOI: 10.1021/acsomega.4c01197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 05/17/2024] [Accepted: 05/23/2024] [Indexed: 06/18/2024]
Abstract
Polymer materials are integral to diverse scientific fields, including chemical engineering and biochemical research, as well as analytical and physical chemistry. This study focuses on the characterization of modified poly(vinylidene fluoride) (PVDF) membranes from both physical and chemical perspectives. Unfortunately, current surface characterization methods face various challenges when simultaneously measuring diverse material properties such as morphology and chemical composition. Addressing this issue, we introduce infrared scattering scanning near-field optical microscopy (IR-sSNOM), a modern technique with the ability to overcome limitations and provide simultaneous topographical, mechanical, and chemical information. We demonstrate the capabilities of IR-sSNOM for investigation of four samples of PVDF membranes modified with 2-(methacryloyloxyethyl)trimethylammonium iodide and/or methacryloyloxyethyl phosphorylcholine in various ratios. These membranes, desirable for their specific properties, represent a challenging material for analysis due to their thermal instability and mechanical vulnerability. Employing Fourier transform infrared (FTIR) microscopy, IR-sSNOM, and Raman microscopy, we successfully overcame these challenges by carefully selecting the experimental parameters and performing detailed characterization of the polymer samples. Valuable insights into morphological and chemical homogeneity, the abundance of modifying side chains, and the distribution of different crystal phases of PVDF were obtained. Most notably, the presence of modifying side chains was confirmed by FTIR microscopy, the Raman spectral mapping revealed the distribution of crystalline phases of the studied polymer, and the IR-sSNOM showed the abundance of chemically diverse aggregates on the surface of the membranes, thanks to the unique nanometer-scale resolution and chemical sensitivity of this technique. This comprehensive approach represents a powerful toolset for characterization of polymeric materials at the nano- and microscale. We believe that this methodology can be applied to similar samples, provided that their thermal stability is considered, opening avenues for detailed exploration of physical and chemical properties in various scientific applications.
Collapse
Affiliation(s)
- Matěj Kmetík
- Department of Physical Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague 6 166 28, Czech Republic
| | - Ivan Kopal
- Department of Physical Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague 6 166 28, Czech Republic
| | - Martin Král
- Department of Physical Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague 6 166 28, Czech Republic
| | - Marcela Dendisová
- Department of Physical Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague 6 166 28, Czech Republic
| |
Collapse
|
2
|
Liu J, Yang M, Chen F, Xu X, Chen Y, Zhang F. A Novel Multiarmed Bifunctional PEG Derivative for the Preparation of Mass Spectrometry Ion Sources with Antifouling Property and High Selectivity. Anal Chem 2024; 96:8484-8491. [PMID: 38753368 DOI: 10.1021/acs.analchem.4c00346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
It is challenging to prepare a highly selective mass spectrometry (MS) ion source for the rapid and highly sensitive detection of analytes, especially mycotoxins. In this study, an amino and tetrazine bifunctionalized multiarm PEG derivative (NH2HCl-4armPEG10K-(MTz)3), which can be easily immobilized on the substrate by the addition reaction between amino and polydopamine, was used for the preparation of MS ionization substrate. NH2HCl-4armPEG10K-(MTz)3 can also be used as a linker to immobilize sufficient streptavidin (SA) on the surface of the substrate by a click reaction. The process further promotes the immobilization of broad-spectrum antibodies (3D4), which were used as the recognition element for ZEN and its metabolites. The prepared SSS-Au-PDA-4armPEG10K-SA-3D4 not only can rapidly enrich ZEN and its metabolites with high selectivity but also shows good antifouling properties in the matrix. After simple sample preparation, the prepared SSS-Au-PDA-4armPEG10K-SA-3D4 can be directly coupled with MS to achieve high sensitivity (LODs: 0.18-0.66 ng/mL, LOQs: 0.5-1.0 ng/mL) and selective detection of ZEN and its metabolites in the matrix. At the same time, satisfactory recoveries (83.60-97.80%) and precision (RSD: 2.80-9.10%) can also be obtained. The prepared SSS-Au-PDA-4armPEG10K-SA-3D4 is expected to provide a powerful tool for the rapid and highly sensitive determination of multiple targets by MS.
Collapse
Affiliation(s)
- Jiawei Liu
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Minli Yang
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| | - Fengming Chen
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| | - Xiuli Xu
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| | - Yiping Chen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Feng Zhang
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| |
Collapse
|
3
|
Tan L, Zhu T, Huang Y, Yuan H, Shi L, Zhu Z, Yao P, Zhu C, Xu J. Ozone-Induced Rapid and Green Synthesis of Polydopamine Coatings with High Uniformity and Enhanced Stability. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308153. [PMID: 38112232 PMCID: PMC10933648 DOI: 10.1002/advs.202308153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Indexed: 12/21/2023]
Abstract
The development of green, controllable, and simplified pathways for rapid dopamine polymerization holds significant importance in the field of polydopamine (PDA) surface chemistry. In this study, a green strategy is successfully devised to accelerate and control the polymerization of dopamine through the introduction of ozone (O3 ). The findings reveal that ozone serves as an eco-friendly trigger, significantly accelerating the dopamine polymerization process across a broad pH range, spanning from 4.0 to 10.0. Notably, the deposition rate of PDA coatings on a silicon wafer reaches an impressive value of ≈64.8 nm h-1 (pH 8.5), which is 30 times higher than that of traditional air-assisted PDA and comparable to the fastest reported method. Furthermore, ozone exhibits the ability to accelerate dopamine polymerization even under low temperatures. It also enables control over the inhibition-initiation of the polymerization process by regulating the "ON/OFF" mode of the ozone gas. Moreover, the ozone-induced PDA coatings demonstrate exceptional characteristics, including high homogeneity, good hydrophilicity, and remarkable chemical and mechanical stability. Additionally, the ozone-induced PDA coatings can be rapidly and effectively deposited onto a wide range of substrates, particularly those that are adhesion-resistant, such as polytetrafluoroethylene (PTFE).
Collapse
Affiliation(s)
- Liru Tan
- Institute of Low‐dimensional Materials Genome InitiativeCollege of Chemistry and Environmental EngineeringShenzhen UniversityGuangdong518060P. R. China
| | - Tang Zhu
- Institute of Low‐dimensional Materials Genome InitiativeCollege of Chemistry and Environmental EngineeringShenzhen UniversityGuangdong518060P. R. China
| | - Yuchan Huang
- Institute of Low‐dimensional Materials Genome InitiativeCollege of Chemistry and Environmental EngineeringShenzhen UniversityGuangdong518060P. R. China
| | - Huixin Yuan
- Institute of Low‐dimensional Materials Genome InitiativeCollege of Chemistry and Environmental EngineeringShenzhen UniversityGuangdong518060P. R. China
| | - Ludi Shi
- Institute of Low‐dimensional Materials Genome InitiativeCollege of Chemistry and Environmental EngineeringShenzhen UniversityGuangdong518060P. R. China
| | - Zijuan Zhu
- Institute of Low‐dimensional Materials Genome InitiativeCollege of Chemistry and Environmental EngineeringShenzhen UniversityGuangdong518060P. R. China
| | - Pingping Yao
- Institute of Low‐dimensional Materials Genome InitiativeCollege of Chemistry and Environmental EngineeringShenzhen UniversityGuangdong518060P. R. China
| | - Caizhen Zhu
- Institute of Low‐dimensional Materials Genome InitiativeCollege of Chemistry and Environmental EngineeringShenzhen UniversityGuangdong518060P. R. China
| | - Jian Xu
- Institute of Low‐dimensional Materials Genome InitiativeCollege of Chemistry and Environmental EngineeringShenzhen UniversityGuangdong518060P. R. China
| |
Collapse
|
4
|
Kral M, Dendisova M, Svoboda J, Cernescu A, Svecova M, Johnson CM, Pop-Georgievski O, Matejka P. Nano-FTIR spectroscopy of surface confluent polydopamine films - What is the role of deposition time and substrate material? Colloids Surf B Biointerfaces 2024; 235:113769. [PMID: 38306803 DOI: 10.1016/j.colsurfb.2024.113769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/20/2024] [Accepted: 01/24/2024] [Indexed: 02/04/2024]
Abstract
Polydopamine (PDA) is a widely used anchoring layer for multiple purposes. While simple to prepare, PDA is characterized by high chemical and topological diversity, which can limit its versatility. Unraveling the formation mechanism and physicochemical properties of continuous confluent layer and adherent nanoparticles on the nanoscale is crucial to further extend the prospective applications of PDA. Utilizing nano-FTIR spectroscopy, we investigate layers of PDA on three different substrates (silicon/silicon dioxide, nitrogen-doped titanium oxide, and gold substrates) at varying times of deposition (ToD). We observed a good correlation between the nano-FTIR and macroscopic FTIR spectra that reflected the changes in the relative abundance of PDA and polymerization intermediates as ToD increased. To gain analytical power, we utilized the principal component analysis (PCA) and extracted additional information from the resulting loadings spectral curves and data distribution in the score plots. We revealed a higher variability of the spectra of ultrathin surface confluent layers compared to the adherent nanoparticles. While the spectra of nanoparticles showed no apparent dependency on either ToD or the substrate material, the spectra of layers were highly affected by the increasing ToD and exhibited a rise in the absorption of PDA. Concomitantly, the spectra of layers grouped according to the substrate material at the lowest ToD point to the fact that the substrate material affects the PDA's initial physicochemical structure. The observed separation gradually diminished with the increasing ToD as the PDA physicochemical structure became less influenced by the substrate material.
Collapse
Affiliation(s)
- Martin Kral
- Department of Physical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology, 166 28 Prague 6, Czech Republic
| | - Marcela Dendisova
- Department of Physical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology, 166 28 Prague 6, Czech Republic.
| | - Jan Svoboda
- Department of Chemistry and Physics of Surfaces and Interfaces, Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague 6, Czech Republic
| | - Adrian Cernescu
- Attocube systems AG, Eglfinger Weg 2, D-85540 Haar, Munich, Germany
| | - Marie Svecova
- Division of Surface and Corrosion Science, Department of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - C Magnus Johnson
- Division of Surface and Corrosion Science, Department of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Ognen Pop-Georgievski
- Department of Chemistry and Physics of Surfaces and Interfaces, Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague 6, Czech Republic
| | - Pavel Matejka
- Department of Physical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology, 166 28 Prague 6, Czech Republic
| |
Collapse
|
5
|
Bao J, Zhang T, Wu S, Li L, Huang X, Li W, Liu C, Li J, Lu R. Hydrophilic magnetic Ti 3C 2T x-based nanocomposite as an efficient boron adsorbent: Synthesis, characterization, and application. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132460. [PMID: 37708646 DOI: 10.1016/j.jhazmat.2023.132460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/28/2023] [Accepted: 08/31/2023] [Indexed: 09/16/2023]
Abstract
It is widely recognized that wastewater containing boron is an environmental issue. Therefore, the development of adsorbents with excellent adsorption capacity, stability, and recyclability is essential in water treatment applications. A Fe3O4/PDA/Ti3C2Tx/PEI/DHHA nanocomposite has been prepared that can be used to separate and recover boric acid by adjusting the pH of the solution, based on the affinity theory of boric acid and cis-diol. Through series characterization, it was determined that the adsorbent possessed good magnetic properties, high hydrophilicity and high loading capacities. In this study, 4-formylphenylboronic acid (FPBA) was selected as the model compound. The nanocomposite exhibited an adsorption equilibrium time of 10 h and an adsorption capacity of 98.99 mg/g at pH = 8.5 and 25 °C. The Langmuir isothermal model and the quasi-secondary kinetic model are both appropriate for describing the adsorption process. Thermodynamic results suggest that adsorption is a spontaneous chemisorption process. Furthermore, the nanocomposite retains good regeneration performance after five adsorption-desorption cycles.
Collapse
Affiliation(s)
- Juan Bao
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Tingting Zhang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Shiying Wu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Lujie Li
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Xianhuai Huang
- School of Environment and Energy Engineering, Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Anhui Jianzhu University, Hefei 230022, People's Republic of China
| | - Weihua Li
- School of Environment and Energy Engineering, Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Anhui Jianzhu University, Hefei 230022, People's Republic of China
| | - Chang Liu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei 230601, People's Republic of China
| | - Jiansheng Li
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Rui Lu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China.
| |
Collapse
|
6
|
Ball V, Hirtzel J, Leks G, Frisch B, Talon I. Experimental Methods to Get Polydopamine Films: A Comparative Review on the Synthesis Methods, the Films' Composition and Properties. Macromol Rapid Commun 2023; 44:e2200946. [PMID: 36758219 DOI: 10.1002/marc.202200946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/07/2023] [Indexed: 02/11/2023]
Abstract
In 2007, polydopamine (PDA) films were shown to be formed spontaneously on the surface of all known classes of materials by simply dipping those substrates in an aerated dopamine solution at pH = 8.5 in the presence of Tris(hydroxymethyl) amino methane buffer. This universal deposition method has raised a burst of interest in surface science, owing not only to the universality of this water based one pot deposition method but also to the ease of secondary modifications. Since then, PDA films and particles are shown to have applications in energy conversion, water remediation systems, and last but not least in bioscience. The deposition of PDA films from aerated dopamine solutions is however a slow and inefficient process at ambient temperature with most of the formed material being lost as a precipitate. This incited to explore the possibility to get PDA and related films based on other catecholamines, using other oxidants than dissolved oxygen and other deposition methods. Those alternatives to get PDA and related films are reviewed and compared in this paper. It will appear that many more investigations are required to get better insights in the relationships between the preparation method of PDA and the properties of the obtained coatings.
Collapse
Affiliation(s)
- Vincent Ball
- Faculté de Chirurgie Dentaire, Université de Strasbourg, 8 rue Sainte Elisabeth, Strasbourg, 67000, France
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1121, 1 rue Eugène Boeckel, Strasbourg, 670000, France
| | - Jordana Hirtzel
- Faculté de Chirurgie Dentaire, Université de Strasbourg, 8 rue Sainte Elisabeth, Strasbourg, 67000, France
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, UMR 7199 Université de Strasbourg/CNRS, Faculté de Pharmacie, Illkirch, Cedex, F-67401, France
| | - Guillaume Leks
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1121, 1 rue Eugène Boeckel, Strasbourg, 670000, France
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, UMR 7199 Université de Strasbourg/CNRS, Faculté de Pharmacie, Illkirch, Cedex, F-67401, France
| | - Benoît Frisch
- 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, UMR 7199 Université de Strasbourg/CNRS, Faculté de Pharmacie, Illkirch, Cedex, F-67401, France
| | - Isabelle Talon
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1121, 1 rue Eugène Boeckel, Strasbourg, 670000, France
- Service de Chirurgie Pédiatrique, Hôpitaux Universitaires de Strasbourg, 1 rue Molière, Strasbourg, 67200, France
| |
Collapse
|
7
|
Mavridi-Printezi A, Menichetti A, Mordini D, Montalti M. Functionalization of and through Melanin: Strategies and Bio-Applications. Int J Mol Sci 2023; 24:9689. [PMID: 37298641 PMCID: PMC10253489 DOI: 10.3390/ijms24119689] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/25/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
A unique feature of nanoparticles for bio-application is the ease of achieving multi-functionality through covalent and non-covalent functionalization. In this way, multiple therapeutic actions, including chemical, photothermal and photodynamic activity, can be combined with different bio-imaging modalities, such as magnetic resonance, photoacoustic, and fluorescence imaging, in a theragnostic approach. In this context, melanin-related nanomaterials possess unique features since they are intrinsically biocompatible and, due to their optical and electronic properties, are themselves very efficient photothermal agents, efficient antioxidants, and photoacoustic contrast agents. Moreover, these materials present a unique versatility of functionalization, which makes them ideal for the design of multifunctional platforms for nanomedicine integrating new functions such as drug delivery and controlled release, gene therapy, or contrast ability in magnetic resonance and fluorescence imaging. In this review, the most relevant and recent examples of melanin-based multi-functionalized nanosystems are discussed, highlighting the different methods of functionalization and, in particular, distinguishing pre-functionalization and post-functionalization. In the meantime, the properties of melanin coatings employable for the functionalization of a variety of material substrates are also briefly introduced, especially in order to explain the origin of the versatility of melanin functionalization. In the final part, the most relevant critical issues related to melanin functionalization that may arise during the design of multifunctional melanin-like nanoplatforms for nanomedicine and bio-application are listed and discussed.
Collapse
Affiliation(s)
| | | | | | - Marco Montalti
- Department of Chemistry “Giacomo Ciamician”, University of Bologna, Via Selmi 2, 40126 Bologna, Italy; (A.M.-P.); (A.M.); (D.M.)
| |
Collapse
|
8
|
Surface-facilitated formation of polydopamine and its implications in melanogenesis. Colloids Surf B Biointerfaces 2023; 222:113068. [PMID: 36481509 DOI: 10.1016/j.colsurfb.2022.113068] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/25/2022] [Accepted: 11/30/2022] [Indexed: 12/02/2022]
Abstract
This manuscript examines influences of differently functionalized surfaces on the formation of solution-dispersed polydopamine (pDA). Glass vials functionalized with different functional groups provided a set of conditions with which the relationship between the area of active surface and the rate of pDA formation could be systematically studied. The results suggest that charged and polar surfaces accelerate pDA formation in solution, with the effect of -NH2 surfaces being exceptionally strong. In the vials, pDA formed as both forms of dispersions in solution and films at solid-liquid interface. Further analyses confirmed that both forms of pDA formed with -NH2 surfaces were chemically similar to conventional pDA synthesized without help of functional surfaces. Among short peptide-based amyloid fibers with defined surface functional groups, and those displaying lysines (-NH2) greatly accelerated the formation of pDA, consistent with the results of -NH2-functionalized vials. The results suggest that pDA formation may be facilitated by surface functional groups of solid-liquid interfaces, and have implications for the overlooked roles of amyloid fibers in biological melanogenesis.
Collapse
|
9
|
Král M, Dendisová M, Matějka P, Svoboda J, Pop-Georgievski O. Infrared imaging of surface confluent polydopamine (PDA) films at the nanoscale. Colloids Surf B Biointerfaces 2023; 221:112954. [DOI: 10.1016/j.colsurfb.2022.112954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/13/2022] [Accepted: 10/18/2022] [Indexed: 11/06/2022]
|
10
|
Kunfi A, Ábrahám Á, Gyulai G, Kiss É, London G. Light‐Induced and Thermal Isomerization of Azobenzenes on Immobilized Gold Nanoparticle Aggregates. Chempluschem 2022; 87:e202200153. [DOI: 10.1002/cplu.202200153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/24/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Attila Kunfi
- Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont Institute of Organic Chemistry HUNGARY
| | - Ágnes Ábrahám
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Laboratory of Interfaces and Nanostructures HUNGARY
| | - Gergő Gyulai
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Laboratory of Interfaces and Nanostructures HUNGARY
| | - Éva Kiss
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Laboratory of Interfaces and Nanostructures HUNGARY
| | - Gabor London
- Research Centre for Natural Sciences Institute of Organic Chemistry Magyar tudósok körűtja 2. 1117 Budapest HUNGARY
| |
Collapse
|
11
|
Cho MK, Seo HJ, Lee JH, Cho WK, Son KS. Polymer brush growth by oxygen-initiated RAFT polymerization on various substrates. Polym Chem 2021. [DOI: 10.1039/d1py01195b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We developed a user-friendly method for growing polymer brushes on various substrates in the presence of air by O2-SI-RAFT polymerization and mussel-inspired surface chemistry. In particular, PHEMA brushes grew to 856 nm on the titanium substrate.
Collapse
Affiliation(s)
- Min Ki Cho
- Department of Chemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Hyun Ji Seo
- Department of Chemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Ji Hoon Lee
- Department of Chemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Woo Kyung Cho
- Department of Chemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Kyung-sun Son
- Department of Chemistry, Chungnam National University, Daejeon, Republic of Korea
| |
Collapse
|