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Zhu X, Li K, Li J, Peng L. Physicochemical properties and antibacterial property of pickering emulsion stabilized by smart Janus nanospheres. Food Chem 2024; 451:139413. [PMID: 38663237 DOI: 10.1016/j.foodchem.2024.139413] [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: 03/01/2024] [Revised: 04/12/2024] [Accepted: 04/16/2024] [Indexed: 05/26/2024]
Abstract
In this study, responsive Janus nanospheres were prepared by grafting LMA and DMAEMA monomers on both sides of SiO2 nanospheres using the Pickering emulsion stencil method and RAFT polymerization. The successful synthesis was verified through infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA), scanning electron microscopy (SEM) characterizations. Subsequently, Pickering emulsion was formulated using Janus nanospheres as emulsifiers. The particle size of the emulsion droplets was systematically investigated by manipulating factors such as pH, nanosphere dosage, water to oil ratio, and oil phase polarity. Notably, the Pickering emulsion exhibited responsive properties to pH, temperature, and CO2. Furthermore, Janus nanospheres exhibited excellent emulsification property for real oil phases, including canola oil, kerosene, gasoline, and diesel oil. Building upon this, a smart antibacterial Pickering emulsion was developed using Janus nanospheres, and its inhibition rate against E. coli could reach 100% within 4 h, which would be beneficial for its application in the food field.
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Affiliation(s)
- Xiaoping Zhu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, PR China
| | - Keran Li
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, PR China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610500, PR China.
| | - Jing Li
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, PR China
| | - Lifei Peng
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, PR China
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Kamenova K, Prancheva A, Radeva L, Yoncheva K, Zaharieva MM, Najdenski HM, Petrov PD. Nanosized Complexes of the Proteolytic Enzyme Serratiopeptidase with Cationic Block Copolymer Micelles Enhance the Proliferation and Migration of Human Cells. Pharmaceutics 2024; 16:988. [PMID: 39204333 PMCID: PMC11358905 DOI: 10.3390/pharmaceutics16080988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 07/17/2024] [Accepted: 07/24/2024] [Indexed: 09/04/2024] Open
Abstract
In this study, we describe the preparation of the cationic block copolymer nanocarriers of the proteolytic enzyme serratiopeptidase (SER). Firstly, an amphiphilic poly(2-(dimethylamino)ethyl methacrylate)-b-poly(ε-caprolactone)-b-poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA9-b-PCL35-b-PDMAEMA9) triblock copolymer was synthesized by reversible addition-fragmentation chain-transfer (RAFT) polymerization. Then, cationic micellar nanocarriers consisting of a PCL hydrophobic core and a PDMAEMA hydrophilic shell were formed by the solvent evaporation method. SER was loaded into the polymeric micelles by electrostatic interaction between the positively charged micellar shell and the negatively charged enzyme molecules. The particle size, zeta potential, and colloid stability of complexes as a function of SER concentration were investigated by dynamic and electrophoretic light scattering. It was found that SER retained its proteolytic activity after immobilization in polymeric carriers. Moreover, the complexes have a concentration-dependent enhancing effect on the proliferation and migration of human keratinocyte HaCaT and gingival fibroblast HGF cells.
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Affiliation(s)
- Katya Kamenova
- Institute of Polymers, Bulgarian Academy of Sciences, bl.103 Akad. G. Bonchev Str., 1113 Sofia, Bulgaria; (K.K.); (A.P.)
| | - Anna Prancheva
- Institute of Polymers, Bulgarian Academy of Sciences, bl.103 Akad. G. Bonchev Str., 1113 Sofia, Bulgaria; (K.K.); (A.P.)
| | - Lyubomira Radeva
- Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000 Sofia, Bulgaria; (L.R.); (K.Y.)
| | - Krassimira Yoncheva
- Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000 Sofia, Bulgaria; (L.R.); (K.Y.)
| | - Maya M. Zaharieva
- The Stephan Angeloff Institute of Microbiology, 1113 Sofia, Bulgaria; (M.M.Z.); (H.M.N.)
| | - Hristo M. Najdenski
- The Stephan Angeloff Institute of Microbiology, 1113 Sofia, Bulgaria; (M.M.Z.); (H.M.N.)
| | - Petar D. Petrov
- Institute of Polymers, Bulgarian Academy of Sciences, bl.103 Akad. G. Bonchev Str., 1113 Sofia, Bulgaria; (K.K.); (A.P.)
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3
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Chafran L, Carfagno A. Synthesis of multi-responsive poly(NIPA- co-DMAEMA)-PBA hydrogel nanoparticles in aqueous solution for application as glucose-sensitive insulin-releasing nanoparticles. J Diabetes Metab Disord 2024; 23:1259-1270. [PMID: 38932860 PMCID: PMC11196523 DOI: 10.1007/s40200-024-01421-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 03/07/2024] [Indexed: 06/28/2024]
Abstract
Objectives This study aimed to present an innovative method for synthesizing pH-thermo-glucose responsive poly(NIPA-co-DMAEMA)-PBA hydrogel nanoparticles via single-step aqueous free radical polymerization. Methods The synthesis process involved free radical polymerization in an aqueous solution, and the resulting nanoparticles were characterized for their physical and chemical properties by 1H NMR, Dynamic Light Scattering (DLS) and Scanning Electron Microscopy (SEM). Insulin-loaded poly(NIPA-co-DMAEMA)-PBA hydrogel nanoparticles were prepared and evaluated for their insulin capture and release properties at different pH and temperature, in addition to different glucose concentrations, with the release profile of insulin quantitatively evaluated using the Bradford method. Results 1H NMR results confirmed successful PBA incorporation, and DLS outcomes consistently indicated a transition to a more hydrophobic state above the Lower Critical Solution Temperature (LCST) of NIPA and DMAEMA. While pH responsiveness exhibited variation, insulin release generally increased with rising pH from acidic to neutral conditions, aligning with the anticipated augmentation of anionic PBA moieties and increased hydrogel hydrophilicity. Increased insulin release in the presence of glucose, particularly for formulations with the lowest mol % PBA, along with a slight increase for the highest mol % PBA formulation when increasing glucose from 1 to 4 mg/mL, supported the potential of this approach for nanoparticle synthesis tailored for glucose-responsive insulin release. Conclusions This work successfully demonstrates a novel method for synthesizing responsive hydrogel nanoparticles and underscores their potential for controlled insulin release in response to glucose concentrations. The observed pH-dependent insulin release patterns and the influence of PBA content on responsiveness highlight the versatility and promise of this nanoparticle synthesis approach for applications in glucose-responsive drug delivery systems. Graphical abstract Poly(NIPA) nanoparticles containing PBA moieties are normally synthesized in two or more steps in the presence of organic solvents. Here we propose a new method for the synthesis of multiresponsive hydrogel poly(NIPA-co-DMAEMA)-PBA nanoparticles in aqueous medium in a single reaction to provide a fast and effective strategy for the production of glucose-responsive multi-systems in aqueous media from free radical polymerization.
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Affiliation(s)
- Liana Chafran
- Department of Chemistry and Biochemistry, George Mason University, Manassas, VA 20110 USA
| | - Amy Carfagno
- Department of Chemistry and Biochemistry, George Mason University, Manassas, VA 20110 USA
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Shymborska Y, Budkowski A, Raczkowska J, Donchak V, Melnyk Y, Vasiichuk V, Stetsyshyn Y. Switching it Up: The Promise of Stimuli-Responsive Polymer Systems in Biomedical Science. CHEM REC 2024; 24:e202300217. [PMID: 37668274 DOI: 10.1002/tcr.202300217] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 08/20/2023] [Indexed: 09/06/2023]
Abstract
Responsive polymer systems have the ability to change properties or behavior in response to external stimuli. The properties of responsive polymer systems can be fine-tuned by adjusting the stimuli, enabling tailored responses for specific applications. These systems have applications in drug delivery, biosensors, tissue engineering, and more, as their ability to adapt and respond to dynamic environments leads to improved performance. However, challenges such as synthesis complexity, sensitivity limitations, and manufacturing issues need to be addressed for successful implementation. In our review, we provide a comprehensive summary on stimuli-responsive polymer systems, delving into the intricacies of their mechanisms and actions. Future developments should focus on precision medicine, multifunctionality, reversibility, bioinspired designs, and integration with advanced technologies, driving the dynamic growth of sensitive polymer systems in biomedical applications.
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Affiliation(s)
- Yana Shymborska
- Lviv Polytechnic National University, St. George's Square 2, 79013, Lviv, Ukraine
- Jagiellonian University, Faculty of Physics, Astronomy and Applied Computer Science, Smoluchowski Institute of Physics, Łojasiewicza 11, 30-348, Kraków, Poland
- Jagiellonian University, Doctoral School of Exact and Natural Sciences, Łojasiewicza 11, 30-348, Kraków, Poland
| | - Andrzej Budkowski
- Jagiellonian University, Faculty of Physics, Astronomy and Applied Computer Science, Smoluchowski Institute of Physics, Łojasiewicza 11, 30-348, Kraków, Poland
| | - Joanna Raczkowska
- Jagiellonian University, Faculty of Physics, Astronomy and Applied Computer Science, Smoluchowski Institute of Physics, Łojasiewicza 11, 30-348, Kraków, Poland
| | - Volodymyr Donchak
- Lviv Polytechnic National University, St. George's Square 2, 79013, Lviv, Ukraine
| | - Yuriy Melnyk
- Lviv Polytechnic National University, St. George's Square 2, 79013, Lviv, Ukraine
| | - Viktor Vasiichuk
- Lviv Polytechnic National University, St. George's Square 2, 79013, Lviv, Ukraine
| | - Yurij Stetsyshyn
- Lviv Polytechnic National University, St. George's Square 2, 79013, Lviv, Ukraine
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5
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Gao M, Cheung CF. Fe 3O 4/PMMA with Well-Arranged Structures Synthesized through Magnetic Field-Assisted Atom Transfer Radical Polymerization. Polymers (Basel) 2024; 16:353. [PMID: 38337242 DOI: 10.3390/polym16030353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/19/2024] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
Particle- or fiber-reinforced polymer composites with controlled orientations are attracting interest and applications producing innovative materials, biological constructs, and energy devices. To gain the controlled orientations, filed-assisted synthesis is widely selected for its easy operation and control. In this paper, we designed magnetic field-assisted equipment and synthesized a magnetic polymer composite Fe3O4/PMMA with a well-arranged layers structure by combining the magnetic field with atom transfer radical polymerization (ATRP). During the polymerization of polymer composites, the magnetic nanoparticles were surrounded by monomers. With the growth of polymer chains, the magnetic particles pushed polymer chains to move according to a specific direction and form a well-arranged structure under the magnetic fields. The existence of a well-arranged layered structure of the composites gives potential guidance for controlling the micro-structure by adding an extra field during the polymerization process. The experimental results provided a possible design to influence the macroscale properties through control of the micro-structure of polymer composites.
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Affiliation(s)
- Ming Gao
- State Key Laboratory of Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China
| | - Chi-Fai Cheung
- State Key Laboratory of Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China
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6
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Eygeris Y, Ulery N, Zharov I. pH-Responsive Membranes from Self-Assembly of Poly(2-(dimethylamino)ethyl methacrylate) Brush Silica Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:15792-15798. [PMID: 37874739 DOI: 10.1021/acs.langmuir.3c02455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
We have prepared novel pH-responsive nanoporous membranes by the self-assembly of silica nanoparticles carrying poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) brushes with a degree of polymerization (DP) in the 100-450 range. The nanoparticles were prepared by surface-initiated ARGET-ATRP, and the membranes were assembled by pressure-driven deposition onto porous supports. The permeability and pore size of the resulting robust membranes were studied using water and hexane flux and filtration cutoff experiments. The pore size of the PDMAEMA "hairy" silica nanoparticle (HNP) membranes measured by water flux was ca. 22 nm and was mostly independent of the polymer brush length. We attributed this to a combination of the PDMAEMA brushes swelling and their permeability to water. In contrast, the pore size measured by hexane flux strongly depended on the DP. The flux and pore size of these membranes in water strongly depended on the pH. The pore size decreased by a factor of 1.6 when the pH was changed from neutral to acidic. pH-Responsive HNP membranes combine many attractive properties, including control over the filtration cutoff, responsive permeability, and high flux at low pressure. The reversible self-assembly of the PDMAEMA HNP membranes may help not only in their facile preparation but also in material recycling if biofouling occurs. The key features of the PDMAEMA HNP assemblies are attractive in membrane separations, molecular valves, and biosensors, where having precise control over the pore size and pore gating is highly desirable.
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Affiliation(s)
- Yulia Eygeris
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Noah Ulery
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Ilya Zharov
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
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7
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Asif Khan RM, Ahmad NM, Nasir H, Mahmood A, Iqbal M, Janjua HA. Antifouling and Water Flux Enhancement in Polyethersulfone Ultrafiltration Membranes by Incorporating Water-Soluble Cationic Polymer of Poly [2-(Dimethyl amino) ethyl Methacrylate]. Polymers (Basel) 2023; 15:2868. [PMID: 37447513 DOI: 10.3390/polym15132868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 09/22/2022] [Accepted: 09/24/2022] [Indexed: 07/15/2023] Open
Abstract
Novel ultrafiltration (UF) polymer membranes were prepared to enhance the antifouling features and filtration performance. Several ultrafiltration polymer membranes were prepared by incorporating different concentrations of water-soluble cationic poly [2-(dimethyl amino) ethyl methacrylate] (PDMAEMA) into a homogenous casting solution of polyethersulfone (PES). After adding PDMAEMA, the effects on morphology, hydrophilicity, thermal stability, mechanical strength, antifouling characteristics, and filtration performance of these altered blended membranes were investigated. It was observed that increasing the quantity of PDMAEMA in PES membranes in turn enhanced surface energy, hydrophilicity, and porosity of the membranes. These new modified PES membranes, after the addition of PDMAEMA, showed better filtration performance by having increased water flux and a higher flux recovery ratio (FRR%) when compared with neat PES membranes. For the PES/PDMAEMA membrane, pure water flux with 3.0 wt.% PDMAEMA and 0.2 MPa pressure was observed as (330.39 L·m-2·h-1), which is much higher than that of the neat PES membrane with the value of (163.158 L·m-2·h-1) under the same conditions. Furthermore, the inclusion of PDMAEMA enhanced the antifouling capabilities of PES membranes. The total fouling ratio (TFR) of the fabricated PES/PDMAEMA membranes with 3.0 wt.% PDMAEMA at 0.2 MPa applied pressure was 36 percent, compared to 64.9 percent for PES membranes.
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Affiliation(s)
- Raja Muhammad Asif Khan
- Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology, H-12, Islamabad 44000, Pakistan
| | - Nasir M Ahmad
- Polymer Research Lab., Polymer and Composite Research Group, School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology, H-12, Islamabad 44000, Pakistan
| | - Habib Nasir
- Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology, H-12, Islamabad 44000, Pakistan
| | - Azhar Mahmood
- Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology, H-12, Islamabad 44000, Pakistan
| | - Mudassir Iqbal
- Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology, H-12, Islamabad 44000, Pakistan
| | - Hussnain A Janjua
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology, H-12, Islamabad 44000, Pakistan
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8
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Temperature-Responsive Polymer Brush Coatings for Advanced Biomedical Applications. Polymers (Basel) 2022; 14:polym14194245. [PMID: 36236192 PMCID: PMC9571834 DOI: 10.3390/polym14194245] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 10/03/2022] [Accepted: 10/06/2022] [Indexed: 01/15/2023] Open
Abstract
Modern biomedical technologies predict the application of materials and devices that not only can comply effectively with specific requirements, but also enable remote control of their functions. One of the most prospective materials for these advanced biomedical applications are materials based on temperature-responsive polymer brush coatings (TRPBCs). In this review, methods for the fabrication and characterization of TRPBCs are summarized, and possibilities for their application, as well as the advantages and disadvantages of the TRPBCs, are presented in detail. Special attention is paid to the mechanisms of thermo-responsibility of the TRPBCs. Applications of TRPBCs for temperature-switchable bacteria killing, temperature-controlled protein adsorption, cell culture, and temperature-controlled adhesion/detachment of cells and tissues are considered. The specific criteria required for the desired biomedical applications of TRPBCs are presented and discussed.
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9
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CIFTBUDAK S, KALKAN B, BOZBAY R, Mertcan ER, ORAKDOGEN N. Structure-property relationships of Kaolin-nanocomposite beads decorated with tertiary amines: Influence of shape on network elasticity and multi-responsivity. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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10
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Fabrication and Phase Behavior of Thermo- and/or pH-Responsive Polymer-Grafted SiO2 Nanoparticles. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12083799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Three series of thermo- and/or pH-responsive polymer-grafted SiO2 nanoparticles, SiO2-graft-poly(oligo(ethylene glycol) methacrylate) (SiO2-g-POEGMA), SiO2-graft-poly(acrylic acid) (SiO2-g-PAA) and SiO2-graft-poly(oligo(ethylene glycol) methacrylate-state-acrylic acid (SiO2-g-P(OEGMA-stat-AA)), were prepared by grafting POEGMA and/or PAA onto the surface of silica nanoparticles through the surface-initiated atom transfer radical polymerization (SI-ATRP). The lower critical solution temperature (LCST) of SiO2-g-POEGMA (MOEGMA = 300 g/mol) was found to be 64 °C. For SiO2-g-PAA nanoparticles, at the pH range from 8 to 12, the hydrodynamic diameter of the nanoparticles increases with increasing pH, and the zeta potential of SiO2-g-PAA nanoparticles is negatively charged and decreases with increasing pH. Owing to the thermo- and pH-responsive, the hydrodynamic diameters of SiO2-g-P(OEGMA-stat-AA) nanoparticles increase with the increasing pH, and the LCSTs of those nanoparticles increase with the increase of POEGMA content.
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11
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Zanata DDM, Felisberti MI. Thermo- and pH-responsive POEGMA-b-PDMAEMA-b-POEGMA triblock copolymers. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Street STG, He Y, Harniman RL, Garcia-Hernandez JD, Manners I. Precision polymer nanofibers with a responsive polyelectrolyte corona designed as a modular, functionalizable nanomedicine platform. Polym Chem 2022. [DOI: 10.1039/d2py00152g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the development of a modular, functionalizable platform for biocompatible core-shell block copolymer nanofibers of controlled length (22 nm – 1.3 μm) and low dispersity produced via living crystallization-driven...
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13
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Plucinski A, Schmidt BVKJ. pH sensitive water-in-water emulsions based on the pullulan and poly( N, N-dimethylacrylamide) aqueous two-phase system. Polym Chem 2022. [DOI: 10.1039/d2py00469k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel aqueous two-phase system based on pullulan and poly(N,N-dimethylacrylamide) is presented. Furthermore, it is used for the formation of pH sensitive water-in-water emulsions.
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14
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Yin J, Zhang HF. A combined physical blending and surface grafting strategy for hydrophilic modification of polyethersulfone membrane toward oil/water separation. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124177] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Gury L, Kamble S, Parisi D, Zhang J, Lee J, Abdullah A, Matyjaszewski K, Bockstaller MR, Vlassopoulos D, Fytas G. Internal Microstructure Dictates Interactions of Polymer-grafted Nanoparticles in Solution. Macromolecules 2021; 54:7234-7243. [PMID: 34393270 PMCID: PMC8361431 DOI: 10.1021/acs.macromol.1c00907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/07/2021] [Indexed: 11/30/2022]
Abstract
Understanding the effects of polymer brush architecture on particle interactions in solution is requisite to enable the development of functional materials based on self-assembled polymer-grafted nanoparticles (GNPs). Static and dynamic light scattering of polystyrene-grafted silica particle solutions in toluene reveals that the pair interaction potential, inferred from the second virial coefficient, A 2, is strongly affected by the grafting density, σ, and degree of polymerization, N, of tethered chains. In the limit of intermediate σ (∼0.3 to 0.6 nm-2) and high N, A 2 is positive and increases with N. This confirms the good solvent conditions and can be qualitatively rationalized on the basis of a pair interaction potential derived for grafted (brush) particles. In contrast, for high σ > 0.6 nm-2 and low N, A 2 displays an unexpected reversal to negative values, thus indicating poor solvent conditions. These findings are rationalized by means of a simple analysis based on a coarse-grained brush potential, which balances the attractive core-core interactions and the excluded volume interactions imparted by the polymer grafts. The results suggest that the steric crowding of polymer ligands in dense GNP systems may fundamentally alter the interactions between brush particles in solution and highlight the crucial role of architecture (internal microstructure) on the behavior of hybrid materials. The effect of grafting density also illustrates the opportunity to tailor the physical properties of hybrid materials by altering geometry (or architecture) rather than a variation of the chemical composition.
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Affiliation(s)
- Leo Gury
- Institute
of Electronic Structure and Laser, FORTH, University of Crete, 70013 Heraklion, Greece
- Department
of Materials Science and Technology, University
of Crete, 70013 Heraklion, Greece
| | - Samruddhi Kamble
- Institute
of Electronic Structure and Laser, FORTH, University of Crete, 70013 Heraklion, Greece
| | - Daniele Parisi
- Institute
of Electronic Structure and Laser, FORTH, University of Crete, 70013 Heraklion, Greece
- Department
of Materials Science and Technology, University
of Crete, 70013 Heraklion, Greece
| | - Jianan Zhang
- Department
of Materials Science and Engineering, Carnegie
Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Jaejun Lee
- Department
of Materials Science and Engineering, Carnegie
Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Ayesha Abdullah
- Department
of Materials Science and Engineering, Carnegie
Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Krzysztof Matyjaszewski
- Chemistry
Department, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Michael R. Bockstaller
- Department
of Materials Science and Engineering, Carnegie
Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Dimitris Vlassopoulos
- Institute
of Electronic Structure and Laser, FORTH, University of Crete, 70013 Heraklion, Greece
| | - George Fytas
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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16
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Johnson L, Gray DM, Niezabitowska E, McDonald TO. Multi-stimuli-responsive aggregation of nanoparticles driven by the manipulation of colloidal stability. NANOSCALE 2021; 13:7879-7896. [PMID: 33881098 DOI: 10.1039/d1nr01190a] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The capacity to control the dispersed or aggregated state of colloidal particles is particularly attractive for facilitating a diverse range of smart applications. For this reason, stimuli-responsive nanoparticles have garnered much attention in recent years. Colloidal systems that exhibit multi-stimuli-responsive behaviour are particularly interesting materials due to the greater spatial and temporal control they display in terms of dispersion/aggregation status; such behaviour can be exploited for implant formation, easy separation of a previously dispersed material or for the blocking of unwanted pores. This review will provide an overview of the recent publications regarding multi-stimuli-responsive microgels and hybrid core-shell nanoparticles. These polymer-based nanoparticles are highly sensitive to environmental conditions and can form aggregated clusters due to a loss of colloidal stability, triggered by temperature, pH and ionic strength stimuli. We aim to provide the reader with a discussion of the recent developments in this area, as well as an understanding of the fundamental concepts which underpin the responsive behaviour, and an exploration of their applications.
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Affiliation(s)
- Luke Johnson
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, UK.
| | - Dominic M Gray
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, UK.
| | - Edyta Niezabitowska
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, UK.
| | - Tom O McDonald
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, UK.
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17
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Coumes F, Le Fer G, Malfait A, Hoogenboom R, Fournier D, Woisel P. Supramolecular control over pH- and temperature-responsive dialkoxynaphthalene-functionalized poly(2-(dimethylamino)ethyl methacrylate) in water. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Multifunctional poly(quaternary ammonium)/Fe3O4 composite nanogels for integration of antibacterial and degradable magnetic redox-responsive properties. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126235] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Temperature-responsive and multi-responsive grafted polymer brushes with transitions based on critical solution temperature: synthesis, properties, and applications. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04750-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Zhu MM, Fang Y, Chen YC, Lei YQ, Fang LF, Zhu BK, Matsuyama H. Antifouling and antibacterial behavior of membranes containing quaternary ammonium and zwitterionic polymers. J Colloid Interface Sci 2020; 584:225-235. [PMID: 33069021 DOI: 10.1016/j.jcis.2020.09.041] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/03/2020] [Accepted: 09/13/2020] [Indexed: 01/05/2023]
Abstract
To overcome the organic-/bio- fouling of the membrane, a dual-functional ultrafiltration membrane containing quaternary ammonium and zwitterionic polymers via quaternization and surface radical polymerization was designed, and its antifouling and antibacterial behavior was studied. In this work, poly(vinylidene fluoride)/poly(methyl methacrylate-co-dimethylamino-2-ethyl methacrylate) (PVDF/P(MMA-co-DMAEMA)) blend membrane was quaternized by p-chloromethyl styrene (p-CMS), and the double bonds were introduced onto the membrane surface, which further participated in the polymerization of zwitterionic monomers on the membrane surface. The results indicated that the resultant membrane exhibited obviously improved hydrophilicity and weak positive charge (isoelectric point, 7.49). The membrane presented higher flux recovery ratio and lower protein adhesion compared with the pure PVDF membrane. Meanwhile, the membrane showed high-efficiency broad-spectrum antibacterial performance, that is, the bacteria killing efficiency of S. aureus and E. coli reached 98.2% and 97.0%, respectively. Moreover, the membrane effectively inhibited bacterial adhesion, which is important for the long-term antibacterial properties of membrane. This antifouling and antibacterial PVDF membrane may have potential in the long-term filtration process, especially when dealing with microbiologically contaminated water.
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Affiliation(s)
- Ming-Ming Zhu
- Department of Polymer Science and Engineering, Key Laboratory of Macromolecular Synthesis and Functionalization (MOE), Zhejiang University, Hangzhou 310027, China; Engineering Research Center of Membrane and Water Treatment (MOE), Zhejiang University, Hangzhou 310027, China
| | - Yu Fang
- Department of Polymer Science and Engineering, Key Laboratory of Macromolecular Synthesis and Functionalization (MOE), Zhejiang University, Hangzhou 310027, China
| | - Yan-Chen Chen
- Department of Polymer Science and Engineering, Key Laboratory of Macromolecular Synthesis and Functionalization (MOE), Zhejiang University, Hangzhou 310027, China; Engineering Research Center of Membrane and Water Treatment (MOE), Zhejiang University, Hangzhou 310027, China
| | - Yu-Qing Lei
- Department of Polymer Science and Engineering, Key Laboratory of Macromolecular Synthesis and Functionalization (MOE), Zhejiang University, Hangzhou 310027, China; Engineering Research Center of Membrane and Water Treatment (MOE), Zhejiang University, Hangzhou 310027, China
| | - Li-Feng Fang
- Department of Polymer Science and Engineering, Key Laboratory of Macromolecular Synthesis and Functionalization (MOE), Zhejiang University, Hangzhou 310027, China; Engineering Research Center of Membrane and Water Treatment (MOE), Zhejiang University, Hangzhou 310027, China.
| | - Bao-Ku Zhu
- Department of Polymer Science and Engineering, Key Laboratory of Macromolecular Synthesis and Functionalization (MOE), Zhejiang University, Hangzhou 310027, China; Engineering Research Center of Membrane and Water Treatment (MOE), Zhejiang University, Hangzhou 310027, China.
| | - Hideto Matsuyama
- Research Center for Membrane and Film Technology, Kobe University, Kobe 657-8501, Japan
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21
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Flemming P, Müller M, Fery A, Münch AS, Uhlmann P. Mechanistic Investigation of the Counterion-Induced UCST Behavior of Poly(N,N-dimethylaminoethyl methacrylate) Polymer Brushes. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02666] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Patricia Flemming
- Leibniz-Institut für Polymerforschung Dresden e.V, Hohe Straße 6, 01069 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
| | - Martin Müller
- Leibniz-Institut für Polymerforschung Dresden e.V, Hohe Straße 6, 01069 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
| | - Andreas Fery
- Leibniz-Institut für Polymerforschung Dresden e.V, Hohe Straße 6, 01069 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
| | - Alexander S. Münch
- Leibniz-Institut für Polymerforschung Dresden e.V, Hohe Straße 6, 01069 Dresden, Germany
| | - Petra Uhlmann
- Leibniz-Institut für Polymerforschung Dresden e.V, Hohe Straße 6, 01069 Dresden, Germany
- University of Nebraska-Lincoln, 68588 Lincoln, Nebraska, United States
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22
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Teper P, Chojniak-Gronek J, Hercog A, Oleszko-Torbus N, Płaza G, Kubacki J, Balin K, Kowalczuk A, Mendrek B. Nanolayers of Poly( N, N'-Dimethylaminoethyl Methacrylate) with a Star Topology and Their Antibacterial Activity. Polymers (Basel) 2020; 12:E230. [PMID: 31963443 PMCID: PMC7023597 DOI: 10.3390/polym12010230] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/10/2020] [Accepted: 01/15/2020] [Indexed: 12/14/2022] Open
Abstract
In this paper, we focus on the synthesis and characterization of novel stable nanolayers made of star methacrylate polymers. The effect of nanolayer modification on its antibacterial properties was also studied. A covalent immobilization of star poly(N,N'-dimethylaminoethyl methacrylate) (PDMAEMA) to benzophenone functionalized glass or silicon supports was carried out via a "grafting to" approach using UV irradiation. To date, star polymer UV immobilization has never been used for this purpose. The thickness of the resulting nanolayers increased from 30 to 120 nm with the molar mass of the immobilized stars. The successful bonding of star PDMAEMA to the supports was confirmed by surface sensitive quantitative spectroscopic methods. Next, amino groups in the polymer layer were quaternized with bromoethane, and the influence of this modification on the antibacterial properties of the obtained materials was analyzed using a selected reference strain of bacteria. The resulting star nanolayer surfaces exhibited higher antimicrobial activity against Bacillus subtilis ATCC 6633 compared to that of the linear PDMAEMA analogues grafted onto a support. These promising results and the knowledge about the influence of the topology and modification of PDMAEMA layers on their properties may help in searching for new materials for antimicrobial applications in medicine.
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Affiliation(s)
- Paulina Teper
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland; (P.T.); (A.H.); (N.O.-T.); (A.K.)
| | - Joanna Chojniak-Gronek
- Institute for Ecology of Industrial Areas, Kossutha 6, 40-844 Katowice, Poland; (J.C.-G.); (G.P.)
| | - Anna Hercog
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland; (P.T.); (A.H.); (N.O.-T.); (A.K.)
| | - Natalia Oleszko-Torbus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland; (P.T.); (A.H.); (N.O.-T.); (A.K.)
| | - Grażyna Płaza
- Institute for Ecology of Industrial Areas, Kossutha 6, 40-844 Katowice, Poland; (J.C.-G.); (G.P.)
| | - Jerzy Kubacki
- A. Chelkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland; (J.K.); (K.B.)
- Silesian Center for Education and Interdisciplinary Research, 75 Pulku Piechoty 1A, 41-500 Chorzów, Poland
| | - Katarzyna Balin
- A. Chelkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland; (J.K.); (K.B.)
- Silesian Center for Education and Interdisciplinary Research, 75 Pulku Piechoty 1A, 41-500 Chorzów, Poland
| | - Agnieszka Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland; (P.T.); (A.H.); (N.O.-T.); (A.K.)
| | - Barbara Mendrek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland; (P.T.); (A.H.); (N.O.-T.); (A.K.)
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23
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Crosstalk between responsivities to various stimuli in multiresponsive polymers: change in polymer chain and external environment polarity as the key factor. Colloid Polym Sci 2019. [DOI: 10.1007/s00396-019-04576-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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24
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Qu F, Li D, Ma X, Chen F, Gautrot JE. A Kinetic Model of Oligonucleotide-Brush Interactions for the Rational Design of Gene Delivery Vectors. Biomacromolecules 2019; 20:2218-2229. [PMID: 31017767 DOI: 10.1021/acs.biomac.9b00155] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Polymer brushes are attractive candidates for the design of gene delivery vectors as they allow the systematic study of the impact of structural (type, size, and shape of nanomaterials core) and physicochemical parameters (cationic monomer chemistry, brush thickness, and grafting density) on transfection efficiency. However, relatively little is known of their interactions of oligonucleotides. To study such interactions, we use surface plasmon resonance and developed a kinetic model of brush binding and infiltration. We identify the striking impact that brush grafting density and thickness have on oligonucleotide kinetics of infiltration, binding affinity, and maximum loading. Surprisingly, double-stranded RNA molecules are found to load at significantly higher levels compared to DNA molecules of identical sequence (apart from uracils/thymines). Furthermore, analysis of the kinetics of adsorption of these oligonucleotides indicates that the stoichiometry of binding (ratio of amine versus phosphate residues) is close to parity for the uptake of 20 bp double-stranded RNA. Finally, nanoparticles were designed to be used as gene transfection vectors and to quantify if the brush grafting density and thickness significantly impact transfection efficiencies in a small interfering RNA knockdown assay. Therefore, this study demonstrates the rational design of polymer brush-based nanoparticle vectors for efficient delivery of oligonucleotides. The model developed will allow to uncover how the refinement of the physicochemical and structural properties of polymer brushes enable the tuning of RNA binding and allow the systematic study of cationic vectors efficiency for RNA delivery.
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Affiliation(s)
- Fengjin Qu
- Department of Applied Chemistry, School of Natural and Applied Sciences , Northwestern Polytechnical University , Xi'an 710072 , PR China
| | | | - Xiaoyan Ma
- Department of Applied Chemistry, School of Natural and Applied Sciences , Northwestern Polytechnical University , Xi'an 710072 , PR China
| | - Fang Chen
- Department of Applied Chemistry, School of Natural and Applied Sciences , Northwestern Polytechnical University , Xi'an 710072 , PR China
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25
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Mendrek B, Fus A, Klarzyńska K, Sieroń AL, Smet M, Kowalczuk A, Dworak A. Synthesis, Characterization and Cytotoxicity of Novel Thermoresponsive Star Copolymers of N, N'-Dimethylaminoethyl Methacrylate and Hydroxyl-Bearing Oligo(Ethylene Glycol) Methacrylate. Polymers (Basel) 2018; 10:E1255. [PMID: 30961179 PMCID: PMC6401879 DOI: 10.3390/polym10111255] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 11/07/2018] [Accepted: 11/07/2018] [Indexed: 12/20/2022] Open
Abstract
Novel, nontoxic star copolymers of N,N-dimethylaminoethyl methacrylate (DMAEMA) and hydroxyl-bearing oligo(ethylene glycol) methacrylate (OEGMA-OH) were synthesized via atom transfer radical polymerization (ATRP) using hyperbranched poly(arylene oxindole) as the macroinitiator. Stars with molar masses from 100,000 g/mol to 257,000 g/mol and with various amounts of OEGMA-OH in the arms were prepared. As these polymers can find applications, e.g., as carriers of nucleic acids, drugs or antibacterial or antifouling agents, in this work, much attention has been devoted to exploring their solution behavior and their stimuli-responsive properties. The behavior of the stars was studied in aqueous solutions under various pH and temperature conditions, as well as in PBS buffer, in Dulbecco's modified Eagle's medium (DMEM) and in organic solvents for comparison. The results indicated that increasing the content of hydrophilic OEGMA-OH units in the arms up to 10 mol% increased the cloud point temperature. For the stars with an OEGMA-OH content of 10 mol%, the thermo- and pH-responsivity was switched off. Since cytotoxicity experiments have shown that the obtained stars are less toxic than homopolymer DMAEMA stars, the presented studies confirmed that the prepared polymers are great candidates for the design of various nanosystems for biomedical applications.
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Affiliation(s)
- Barbara Mendrek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland.
| | - Agnieszka Fus
- Department of Molecular Biology and Genetics, Medical University of Silesia, Medykow 18, 40-752 Katowice, Poland.
| | - Katarzyna Klarzyńska
- Department of Molecular Biology and Genetics, Medical University of Silesia, Medykow 18, 40-752 Katowice, Poland.
| | - Aleksander L Sieroń
- Department of Molecular Biology and Genetics, Medical University of Silesia, Medykow 18, 40-752 Katowice, Poland.
| | - Mario Smet
- Department of Chemistry, University of Leuven, Celestijnenlaan, 200F, B-3001 Leuven (Heverlee), Belgium.
| | - Agnieszka Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland.
| | - Andrzej Dworak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland.
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26
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Hossain T, Alam MA, Rahman MA, Sharafat MK, Minami H, Gafur MA, Hoque SM, Ahmad H. Zwitterionic poly(2-(methacryloyloxy) ethyl phosphorylcholine) coated mesoporous silica particles and doping with magnetic nanoparticles. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.06.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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27
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Zhang K, Liu J, Ma X, Lei L, Li Y, Yang H, Lei Z. Temperature, pH, and reduction triple-stimuli-responsive inner-layer crosslinked micelles as nanocarriers for controlled release. J Appl Polym Sci 2018. [DOI: 10.1002/app.46714] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kehu Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry & Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Jiangtao Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry & Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
- College of Pharmacy; Shaanxi University of Chinese Medicine; Xianyang 712046 China
| | - Xiao Ma
- Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry & Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Lei Lei
- Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry & Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Yan Li
- Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry & Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Hong Yang
- Basic Experimental Teaching Center; Shaanxi Normal University; Xi'an 710062 China
| | - Zhongli Lei
- Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry & Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
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28
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Zhao Y, Guo W, Lu Q, Zhang S. Preparation of poly(butylene succinate)-poly[2-(dimethylamino)ethyl methacrylate] copolymers and their applications as carriers for drug delivery. POLYM INT 2018. [DOI: 10.1002/pi.5559] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yuping Zhao
- College of Chemistry and Materials Science; Northwest University; Xi'an Shaanxi PR China
| | - Weihong Guo
- College of Chemistry and Materials Science; Northwest University; Xi'an Shaanxi PR China
| | - Qian Lu
- College of Chemistry and Materials Science; Northwest University; Xi'an Shaanxi PR China
| | - Shiping Zhang
- College of Chemistry and Materials Science; Northwest University; Xi'an Shaanxi PR China
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29
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Gebru KA, Das C. Removal of chromium (VI) ions from aqueous solutions using amine-impregnated TiO 2 nanoparticles modified cellulose acetate membranes. CHEMOSPHERE 2018; 191:673-684. [PMID: 29078191 DOI: 10.1016/j.chemosphere.2017.10.107] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 10/05/2017] [Accepted: 10/19/2017] [Indexed: 06/07/2023]
Abstract
In this work, TiO2 nanoparticles (NPs) were modified using tetraethylenepentamine (TEPA), ethylenediamine (EDA), and hexamethylenetetramine (HMTA) amines using impregnation process. The prepared amine modified TiO2 samples were explored as an additive to fabricate ultrafiltration membranes with enhanced capacity towards the removal of chromium ions from aqueous solution. Modified membranes were prepared from cellulose acetate (CA) polymer blended with polyethylene glycol (PEG) additive, and amine modified TiO2 by using phase inversion technique. Fourier transform infrared spectroscopy (FTIR), zeta potential (ζ), thermo gravimetric analysis (TGA), field emission scanning electron microscopy (FESEM), water contact angle (WCA), and atomic absorption spectrophotometer (AAS) studies were done to characterize the membranes in terms of chemical structure, electric charge, thermal stability, morphology, hydrophilicity, and removal performance. The pure water permeability and Cr (VI) ion removal efficiency of the unmodified (i.e. CA/U-Ti) and the amine modified (CA/Ti-HMTA, CA/Ti-EDA, and CA/Ti-TEPA) membranes were dependent on pH and metal ion concentration. Incorporation of amine modified TiO2 composite to the CA polymer was found to improve the fouling and removal characteristics of the membranes during the chromium ultrafiltration process. The maximum removal efficiency result of Cr (VI) ions at pH of 3.5 using CA/Ti-TEPA membrane was 99.8%. The washing/regeneration cycle results in this study described as an essential part for prospect industrial applications of the prepared membranes. The maximum Cr (VI) removal results by using CA/Ti-TEPA membrane for four washing/regeneration cycles are 99.6%, 99.5%, 98.6% and, 96.6%, respectively.
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Affiliation(s)
- Kibrom Alebel Gebru
- Department of Chemical Engineering, College of Engineering and Technology, Adigrat University, Tigray, Ethiopia
| | - Chandan Das
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, 781039, Assam, India.
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30
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Magnetic Nanoparticles Coated with a Thermosensitive Polymer with Hyperthermia Properties. Polymers (Basel) 2017; 10:polym10010010. [PMID: 30966044 PMCID: PMC6415002 DOI: 10.3390/polym10010010] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/12/2017] [Accepted: 12/19/2017] [Indexed: 11/16/2022] Open
Abstract
Magnetic nanoparticles (MNPs) have been widely used to increase the efficacy of chemotherapeutics, largely through passive accumulation provided by the enhanced permeability and retention effect. Their incorporation into biopolymer coatings enables the preparation of magnetic field-responsive, biocompatible nanoparticles that are well dispersed in aqueous media. Here we describe a synthetic route to prepare functionalized, stable magnetite nanoparticles (MNPs) coated with a temperature-responsive polymer, by means of the hydrothermal method combined with an oil/water (o/w) emulsion process. The effects of both pH and temperature on the electrophoretic mobility and surface charge of these MNPs are investigated. The magnetite/polymer composition of these systems is detected by Fourier Transform Infrared Spectroscopy (FTIR) and quantified by thermogravimetric analysis. The therapeutic possibilities of the designed nanostructures as effective heating agents for magnetic hyperthermia are demonstrated, and specific absorption rates as high as 150 W/g, with 20 mT magnetic field and 205 kHz frequency, are obtained. This magnetic heating response could provide a promising nanoparticle system for combined diagnostics and cancer therapy.
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31
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32
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Krishnamoorthy M, Li D, Sharili AS, Gulin-Sarfraz T, Rosenholm JM, Gautrot JE. Solution Conformation of Polymer Brushes Determines Their Interactions with DNA and Transfection Efficiency. Biomacromolecules 2017; 18:4121-4132. [DOI: 10.1021/acs.biomac.7b01175] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | | | - Amir S. Sharili
- Barts
and the London School of Medicine and Dentistry, Queen Mary, University of London, 4 Newark Street, London, E1 2AT, United Kingdom
| | - Tina Gulin-Sarfraz
- Pharmaceutical
Sciences Laboratory, Faculty of Science and Engineering, Abo Akademi University, 20520 Turku, Finland
| | - Jessica M. Rosenholm
- Pharmaceutical
Sciences Laboratory, Faculty of Science and Engineering, Abo Akademi University, 20520 Turku, Finland
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33
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Zakharova NV, Filippov AP, Ivanova AS, Meleshko TK, Yakimansky AV. Thermoresponsive behavior of water-salt solutions of a graft copolymer with a main polyimide chain and side poly(N,N-dimethylamino-2-ethyl methacrylate) side chains. POLYMER SCIENCE SERIES A 2017. [DOI: 10.1134/s0965545x17050182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Mirizadeh A, Atai M, Ebrahimi S. Fabrication of denture base materials with antimicrobial properties. J Prosthet Dent 2017; 119:292-298. [PMID: 28552288 DOI: 10.1016/j.prosdent.2017.03.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 03/12/2017] [Accepted: 03/13/2017] [Indexed: 01/13/2023]
Abstract
STATEMENT OF PROBLEM Acrylic resin denture base resins are colonized by oral and nonoral bacteria and Candida species. This reservoir of microorganism causes denture stomatitis, which can be implicated in some life-threating infections in older denture wearers. PURPOSE The purpose of this in vitro study was to incorporate quaternized N,N-dimethylaminoethyl methacrylate (DMAEMA) monomer into a denture base resin and investigate its antimicrobial and mechanical properties. MATERIAL AND METHODS Quaternized ammonium monomer (QAM) was synthesized through the reaction of octyl bromide and DMAEMA. The synthesized QAM was incorporated into a denture base resin system (8 to 12 wt%). The resulting material was characterized by Fourier transform infrared spectroscopy. The in vitro antimicrobial property was determined by direct contact test against Escherichia coli, Staphylococcus aureus, and Candida albicans. Release of the QAM was also tested by means of an agar diffusion test. Mechanical properties were measured with a 3-point bend test, and results were analyzed and compared using ANOVA and the Tukey post hoc test (α=.05). RESULTS Spectroscopy confirmed the formation of quaternized ammonium modified denture base (QAMDB). The decrease in number of viable cells of E coli, S aureus, and C albicans was more than 99% for 12%-QAMDB in comparison with that of the control groups. An overall decline was observed in the flexural strength and flexural modulus of the fabricated resins (P<.05), but no differences were observed for strain at break or fracture work of the specimens (P>.05). CONCLUSIONS Denture base resins containing immobilized QAM provided high antibacterial activity, but the flexural strength and flexural modulus of the denture base resins decreased.
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Affiliation(s)
- Aysan Mirizadeh
- Doctoral student, Department of Chemical Engineering, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Atai
- Full Professor, Iran Polymer and Petrochemical Institute, Tehran, Iran.
| | - Sirous Ebrahimi
- Associate Professor, Faculty of Chemical Engineering, Biotechnology Research Center, Sahand University of Technology, Tabriz, Iran
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35
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Mohammadi M, Salami-Kalajahi M, Roghani-Mamaqani H, Golshan M. Effect of molecular weight and polymer concentration on the triple temperature/pH/ionic strength-sensitive behavior of poly(2-(dimethylamino)ethyl methacrylate). INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2016.1236340] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Maryam Mohammadi
- Department of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
| | - Mehdi Salami-Kalajahi
- Department of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
| | - Hossein Roghani-Mamaqani
- Department of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
| | - Marzieh Golshan
- Department of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
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36
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Yañez-Macias R, Alvarez-Moises I, Perevyazko I, Lezov A, Guerrero-Santos R, Schubert US, Guerrero-Sanchez C. Effect of the Degree of Quaternization and Molar Mass on the Cloud Point of Poly[2-(dimethylamino)ethyl methacrylate] Aqueous Solutions: A Systematic Investigation. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700065] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Roberto Yañez-Macias
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstrasse 10 07743 Jena Germany
- Departamento de Sintesis de Polimeros; Centro de Investigación en Química Aplicada; Blvd. Enrique Reyna H. 140 25100 Saltillo Coahuila Mexico
| | - Isaac Alvarez-Moises
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstrasse 10 07743 Jena Germany
| | - Igor Perevyazko
- Department of Molecular Biophysics and Physics of Polymers; St. Petersburg State University; 7/9 Universitetskaya nab. St. Petersburg 199034 Russia
| | - Alexey Lezov
- Department of Molecular Biophysics and Physics of Polymers; St. Petersburg State University; 7/9 Universitetskaya nab. St. Petersburg 199034 Russia
| | - Ramiro Guerrero-Santos
- Departamento de Sintesis de Polimeros; Centro de Investigación en Química Aplicada; Blvd. Enrique Reyna H. 140 25100 Saltillo Coahuila Mexico
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstrasse 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Carlos Guerrero-Sanchez
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstrasse 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
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37
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Santos FG, Bonkovoski LC, Garcia FP, Cellet TSP, Witt MA, Nakamura CV, Rubira AF, Muniz EC. Antibacterial Performance of a PCL-PDMAEMA Blend Nanofiber-Based Scaffold Enhanced with Immobilized Silver Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2017; 9:9304-9314. [PMID: 28230345 DOI: 10.1021/acsami.6b14411] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In the present study, nanofiber meshes (NFs), composed of polycaprolactone and poly[(2-dimethylamino)ethyl methacrylate] at 80/20 and 50/50 PCL/PDMAEMA blend ratios, were obtained through electrospinning. Silver nanoparticles (AgNPs) formed in situ were then immobilized on NF surfaces through adsorption processes at different pHs. It was possible to observe that the amount of NF-AgNPs can be tuned by changing the pH of AgNPs immobilization and the PCL/PDMAEMA ratio in the blend. The neat NF and NF-AgNPs were characterized with respect to their morphology and mechanical properties. The effects of AgNPs on the antibacterial activities and cytotoxicity of meshes were also evaluated. The antibacterial performance of such NF was improved by the presence of AgNPs. The NF-AgNPs presented good antibacterial effect against S. aureus and partial toxicity against E. coli and P. aeruginosa. Also, compared with neat PCL/PDMAEMA the NF-AgNPs presented lower cytotoxicity against VERO cells, showing their potential for applications in tissue engineering for different types of cell growth.
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Affiliation(s)
| | | | | | | | - Maria A Witt
- Pontifícia Universidade Católica do Paraná (PUCPR), 80215-901 Curitiba, PR, Brazil
| | | | | | - Edvani C Muniz
- Universidade Tecnológica Federal do Paraná (UTFPR-LD), PPGCEM, 86036-370 Londrina, PR, Brazil
- Programa de Pós-graduação em Biotecnologia Aplicada a Agricultura, Universidade Paranaense (UNIPAR) , 87502-210, Umuarama, PR, Brazil
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38
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Zoppe JO, Ataman NC, Mocny P, Wang J, Moraes J, Klok HA. Surface-Initiated Controlled Radical Polymerization: State-of-the-Art, Opportunities, and Challenges in Surface and Interface Engineering with Polymer Brushes. Chem Rev 2017; 117:1105-1318. [PMID: 28135076 DOI: 10.1021/acs.chemrev.6b00314] [Citation(s) in RCA: 598] [Impact Index Per Article: 85.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The generation of polymer brushes by surface-initiated controlled radical polymerization (SI-CRP) techniques has become a powerful approach to tailor the chemical and physical properties of interfaces and has given rise to great advances in surface and interface engineering. Polymer brushes are defined as thin polymer films in which the individual polymer chains are tethered by one chain end to a solid interface. Significant advances have been made over the past years in the field of polymer brushes. This includes novel developments in SI-CRP, as well as the emergence of novel applications such as catalysis, electronics, nanomaterial synthesis and biosensing. Additionally, polymer brushes prepared via SI-CRP have been utilized to modify the surface of novel substrates such as natural fibers, polymer nanofibers, mesoporous materials, graphene, viruses and protein nanoparticles. The last years have also seen exciting advances in the chemical and physical characterization of polymer brushes, as well as an ever increasing set of computational and simulation tools that allow understanding and predictions of these surface-grafted polymer architectures. The aim of this contribution is to provide a comprehensive review that critically assesses recent advances in the field and highlights the opportunities and challenges for future work.
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Affiliation(s)
- Justin O Zoppe
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Nariye Cavusoglu Ataman
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Piotr Mocny
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Jian Wang
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - John Moraes
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Harm-Anton Klok
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
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39
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Mohammadi M, Salami-Kalajahi M, Roghani-Mamaqani H, Golshan M. Synthesis and investigation of dual pH- and temperature-responsive behaviour of poly[2-(dimethylamino)ethyl methacrylate]-grafted gold nanoparticles. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3702] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Maryam Mohammadi
- Department of Polymer Engineering, and Institute of Polymeric Materials; Sahand University of Technology; PO Box 51335-1996 Tabriz Iran
| | - Mehdi Salami-Kalajahi
- Department of Polymer Engineering, and Institute of Polymeric Materials; Sahand University of Technology; PO Box 51335-1996 Tabriz Iran
| | - Hossein Roghani-Mamaqani
- Department of Polymer Engineering, and Institute of Polymeric Materials; Sahand University of Technology; PO Box 51335-1996 Tabriz Iran
| | - Marzieh Golshan
- Department of Polymer Engineering, and Institute of Polymeric Materials; Sahand University of Technology; PO Box 51335-1996 Tabriz Iran
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40
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Wang Y, Shen J, Yuan J. Design of hemocompatible and antifouling PET sheets with synergistic zwitterionic surfaces. J Colloid Interface Sci 2016; 480:205-217. [DOI: 10.1016/j.jcis.2016.07.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 07/08/2016] [Accepted: 07/13/2016] [Indexed: 12/11/2022]
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41
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Hydrogen-bond interaction assisted branched copolymer HILIC material for separation and N-glycopeptides enrichment. Talanta 2016; 158:361-367. [DOI: 10.1016/j.talanta.2016.05.034] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 05/09/2016] [Accepted: 05/13/2016] [Indexed: 11/22/2022]
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42
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Ion-stimuli responsive dimethylaminoethyl methacrylate/hydroxyethyl methacrylate copolymeric hydrogels: mutual influence of reaction parameters on the swelling and mechanical strength. JOURNAL OF POLYMER RESEARCH 2016. [DOI: 10.1007/s10965-016-0946-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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43
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Celik T, Orakdogen N. Correlation Between Physicomechanical and Swelling Properties of Weakly Basic Copolymer Hydrogels Based on (Meth)acrylate Polycations as New Smart Materials. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500230] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tayyibe Celik
- Soft Materials Research Laboratory; Department of Chemistry; Istanbul Technical University; 34469 Maslak Istanbul Turkey
| | - Nermin Orakdogen
- Soft Materials Research Laboratory; Department of Chemistry; Istanbul Technical University; 34469 Maslak Istanbul Turkey
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44
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Bonkovoski LC, Martins AF, Bellettini IC, Garcia FP, Nakamura CV, Rubira AF, Muniz EC. Polyelectrolyte complexes of poly[(2-dimethylamino) ethyl methacrylate]/chondroitin sulfate obtained at different pHs: Preparation, characterization, cytotoxicity and controlled release of chondroitin sulfate. J Control Release 2015; 213:e29-30. [PMID: 27005145 DOI: 10.1016/j.jconrel.2015.05.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Letícia C Bonkovoski
- Grupo de Materiais Poliméricos Compósitos - Departamento de Química - Universidade Estadual de Maringá, UEM, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Alessandro F Martins
- Grupo de Materiais Poliméricos Compósitos - Departamento de Química - Universidade Estadual de Maringá, UEM, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil; Univ. Tecnol. Fed. do Paraná (UTFPR), Estr. Boa Esperança, 85660-000 Dois Vizinhos, Brazil
| | - Ismael C Bellettini
- Laboratório Polissol - Departamento de Química - Universidade Federal de Santa Catarina UFSC, 88040-900 Florianópolis, Santa Catarina, Brazil
| | - Francielle P Garcia
- Grupo de Materiais Poliméricos Compósitos - Departamento de Química - Universidade Estadual de Maringá, UEM, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Celso V Nakamura
- Grupo de Materiais Poliméricos Compósitos - Departamento de Química - Universidade Estadual de Maringá, UEM, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Adley F Rubira
- Grupo de Materiais Poliméricos Compósitos - Departamento de Química - Universidade Estadual de Maringá, UEM, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Edvani C Muniz
- Grupo de Materiais Poliméricos Compósitos - Departamento de Química - Universidade Estadual de Maringá, UEM, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil.
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45
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Yenice Z, Schön S, Bildirir H, Genzer J, von Klitzing R. Thermoresponsive PDMAEMA Brushes: Effect of Gold Nanoparticle Deposition. J Phys Chem B 2015; 119:10348-58. [DOI: 10.1021/acs.jpcb.5b04757] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Jan Genzer
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
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46
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Min SH, Kwak SK, Kim BS. Atomistic simulation for coil-to-globule transition of poly(2-dimethylaminoethyl methacrylate). SOFT MATTER 2015; 11:2423-2433. [PMID: 25662300 DOI: 10.1039/c4sm02242d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The coil-to-globule transition of poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) in aqueous solution was investigated by all-atomistic molecular dynamics simulations. The polymer consistent force field (PCFF) was applied to the PDMAEMA model with a proper protonation state. The structural analysis indicates a distinct difference in the hydration state of particular functional groups of PDMAEMA as well as in the conformational state of PDMAEMA below and above the lower critical solution temperature (LCST). In particular, by monitoring the motion of water molecules, we observe that water molecules in the vicinity of the carbonyl group are relatively restricted to the motion in the globule state due to the extended relaxation time of hydrogen bonds among water molecules. The degree of protonation was also adjusted to study the effect of protonation on the conformational state of PDMAEMA.
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Affiliation(s)
- Sa Hoon Min
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
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47
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Chen X, Sun H, Xu J, Han X, Liu H, Hu Y. pH-modulated double LCST behaviors with diverse aggregation processes of random-copolymer grafted silica nanoparticles in aqueous solution. RSC Adv 2015. [DOI: 10.1039/c5ra13557e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Thermo-responsive hybrid nanoparticles composed of silica-core and poly(N,N-dimethylaminoethyl methacrylate-co-N-isopropylacrylamide) P(DMAEMA-co-NIPAM) copolymer-shell were prepared through a one-pot ATRP technique.
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Affiliation(s)
- Xiaolu Chen
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Hui Sun
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Jian Xu
- Shanghai Institute of Measurement and Testing Technology
- Shanghai 201203
- China
| | - Xia Han
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Honglai Liu
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Ying Hu
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- China
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48
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Wu L, Glebe U, Böker A. Surface-initiated controlled radical polymerizations from silica nanoparticles, gold nanocrystals, and bionanoparticles. Polym Chem 2015. [DOI: 10.1039/c5py00525f] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review summarizes recent progress in surface-initiated controlled radical polymerizations from silica nanoparticles, gold nanocrystals, and bionanoparticles.
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Affiliation(s)
- Lei Wu
- Fraunhofer Institute for Applied Polymer Research IAP
- 14476 Potsdam-Golm
- Germany
- DWI – Leibniz Institute for Interactive Materials e.V
- Lehrstuhl für Makromolekulare Materialien und Oberflächen
| | - Ulrich Glebe
- Fraunhofer Institute for Applied Polymer Research IAP
- 14476 Potsdam-Golm
- Germany
| | - Alexander Böker
- Fraunhofer Institute for Applied Polymer Research IAP
- 14476 Potsdam-Golm
- Germany
- Lehrstuhl für Polymermaterialien und Polymertechnologie
- Universität Potsdam
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49
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Guo Y, Liu H, Tang D, Li C, Zhao Y. Facile synthesis of silica nanoparticles grafted with quaternized linear, comblike and toothbrushlike copolymers. Polym Chem 2015. [DOI: 10.1039/c4py01741b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The alkoxysilane–hydroxyl coupling reaction, quaternization and RAFT polymerization were combined to synthesize three types of quaternized copolymers grafted silica with thermo-dependent surface wettability.
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Affiliation(s)
- Yanfei Guo
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Huanhuan Liu
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Dandan Tang
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Cangxia Li
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Youliang Zhao
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
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50
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Bonkovoski LC, Martins AF, Bellettini IC, Garcia FP, Nakamura CV, Rubira AF, Muniz EC. Polyelectrolyte complexes of poly[(2-dimethylamino) ethyl methacrylate]/chondroitin sulfate obtained at different pHs: I. Preparation, characterization, cytotoxicity and controlled release of chondroitin sulfate. Int J Pharm 2014; 477:197-207. [DOI: 10.1016/j.ijpharm.2014.10.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Revised: 09/14/2014] [Accepted: 10/07/2014] [Indexed: 11/26/2022]
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