1
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Zheng C, Sun K, Wu Q, Sun Y, Xu B. Adsorption of ionic contaminants from complex water matrices by versatile chitosan-based beads. BIORESOURCE TECHNOLOGY 2024; 411:131332. [PMID: 39181510 DOI: 10.1016/j.biortech.2024.131332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 08/20/2024] [Accepted: 08/21/2024] [Indexed: 08/27/2024]
Abstract
Most adsorbents are currently restricted by their single function in pollutant removal from complex wastewater. Herein, we constructed a versatile chitosan-based adsorbent (MC-DA) by grafting amphoteric copolymers with high pH-responsiveness property, aiming at the removal of multiple ionic contaminants. Specifically, the surface charge and hydrophobicity/hydrophilicity of MC-DA can be finely tuned under different pH conditions. As a result, the effective adsorption of cationic methylene blue (MB) and anionic Acid Orange 7 (AO7) with capacities of 627.4 mg/g and 1146.8 mg/g were achieved respectively, superior to most reported materials. Regarding the characterization results, the adsorption mechanisms for MB adsorption were electrostatic and hydrophobic interactions, while the electrostatic attraction was the main driving force for AO7 adsorption. Apart from the versatile adsorption performance, high acid resistance (pH ≥ 2.0), good reusability and rapid separation property under an external magnetic field suggested MC-DA's promising environmental benefits and practical application potential in water remediation.
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Affiliation(s)
- Chaofan Zheng
- College of Urban Construction, Nanjing Tech University, Nanjing 211816, China.
| | - Kuiyuan Sun
- College of Urban Construction, Nanjing Tech University, Nanjing 211816, China
| | - Qu Wu
- College of Urban Construction, Nanjing Tech University, Nanjing 211816, China
| | - Yongjun Sun
- College of Urban Construction, Nanjing Tech University, Nanjing 211816, China
| | - Bincheng Xu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
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2
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Basak U, Chatterjee DP, Mahapatra G, Nandi AK. Enhanced Optoelectronic Properties of Polythiophene- g-Poly(dimethyl amino ethyl methacrylate)- b-Poly(diethylene glycol methyl ether methacrylate) Copolymers using " Grafting onto" Synthetic Strategy. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39231951 DOI: 10.1021/acsami.4c13280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/06/2024]
Abstract
The optoelectronic properties of polythiophene (PT) graft block copolymers are most important for fabricating optoelectronic devices, and recently, we reported a single-pot atom-transfer radical polymerization (ATRP) technique for preparation of PT graft block copolymers between thermoresponsive poly(diethylene glycol methyl ether methacrylate) (PDEGMEM) and pH-responsive poly(dimethyl amino ethyl methacrylate) (PDMAEMA) from the PT backbone via the "grafting from" strategy with an 11 mol % contamination. A "grafting onto" strategy has been opted to eliminate the contamination from the block copolymer where we synthesized poly(thiophene acetic acid) (P3TAA) followed by the coupling with PDEGMEM-b-PDMAEMA-Cl, PDMAEMA-b-PDEGMEM-Cl, and PDMAEMA-ran-PDEGMEM-Cl copolymers, produced separately by the ATRP technique. The polymers were characterized using 1H NMR, SEC, etc. TEM study exhibits mostly vesicular morphology and optical properties measured using UV-vis and photoluminescence spectroscopy showing pH dependent behavior. dc conductivity values indicate semiconducting nature in the order P2 > P3 > P1. The abrupt hike of P2 (∼80 times) in conductivity at pH 3 from that of previously prepared P2 copolymers formed by the grafting from process is attributed to the absence of ∼11 mol % contamination. Conductivity decreases with increasing pH, due to coiling of the PT backbone in accordance with the blue shifts of λabs peaks. The current (I)-voltage (V) plots exhibit bimodal memory and organic mixed ionic and electronic conductivity. Higher current (3.3 mA for P2, pH 3) and electronic memory occur upon light irradiation than that of dark. Photoswitching property decreases with increase of pH, showing highest photocurrent gain of 8.05 for P2 at pH 3. Photocurrent gain follows the order P2 > P3 > P1 indicating P2 is the best to develop photoswitches in the P-series polymers. Fitting of growth and decay curves suggests that they are a two-stage process: photocurrent raises fast at the on state initially and then at a slower rate and similar at an off state. Impedance spectra suggest charge-transfer resistance and Warburg impedance values follow the order of P1 > P3 > P2, whereas capacitance value follows the opposite order.
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Affiliation(s)
- Udayan Basak
- Polymer Science Unit, School of Material Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Dhruba P Chatterjee
- Department of Chemistry, Presidency University, College Street, Kolkata 700073, India
| | - Gouranga Mahapatra
- Polymer Science Unit, School of Material Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Arun K Nandi
- Polymer Science Unit, School of Material Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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3
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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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4
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Carden P, Ge S, Li B, Samanta S, Sokolov AP. Dynamics in polymers with phase separated dynamic bonds: the case of a peculiar temperature dependence. SOFT MATTER 2024; 20:3868-3876. [PMID: 38651737 DOI: 10.1039/d4sm00115j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
The topic of polymers with dynamic bonds (stickers) appears as an exciting and promising area of materials science, thanks to their attractive self-healable, recyclable, extremely tough, and super extensible properties. Polymers with phase separated dynamic bonds revealed several unique properties, but mechanisms controlling their viscoelastic properties remain poorly understood. In this work, we present a dynamic analysis of a model polymer system with phase separated hydrogen bonding functionalities. The results confirm that terminal relaxation in these systems is independent of polymer segmental dynamics and is instead controlled by structural relaxations in clusters of stickers. Detailed analysis revealed a surprising result: terminal relaxation time of these systems has weaker temperature dependence than that of structural relaxation in clusters, although the former is slower than the latter. Borrowing ideas from the field of block copolymers, we ascribed this unusual result to an LCST-like behavior for the miscibility of the stickers in the polymer matrix. The presented results and ideas deepen the understanding of the viscoelasticity for polymers with dynamic bonds, enabling intelligent design of functional materials with desired macroscopic properties.
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Affiliation(s)
- Peyton Carden
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA.
| | - Sirui Ge
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Bingrui Li
- The Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Subarna Samanta
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA.
| | - Alexei P Sokolov
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA.
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
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5
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Terada E, Isono T, Satoh T, Yamamoto T, Kakuchi T, Sato S. All-Atom Molecular Dynamics Simulations of the Temperature Response of Poly(glycidyl ether)s with Oligooxyethylene Side Chains Terminated with Alkyl Groups. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13101628. [PMID: 37242043 DOI: 10.3390/nano13101628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023]
Abstract
Recently, experimental investigations of a class of temperature-responsive polymers tethered to oligooxyethylene side chains terminated with alkyl groups have been conducted. In this study, aqueous solutions of poly(glycidyl ether)s (PGE) with varying numbers of oxyethylene units, poly(methyl(oligooxyethylene)n glycidyl ether) (poly(Me(EO)nGE)), and poly(ethyl(oligooxyethylene)n glycidyl ether) (poly(Et(EO)nGE) (n = 0, 1, and 2) were investigated by all-atom molecular dynamics simulations, focusing on the thermal responses of their chain extensions, the recombination of intrapolymer and polymer-water hydrogen bonds, and water-solvation shells around the alkyl groups. No clear relationship was established between the phase-transition temperature and the polymer-chain extensions unlike the case for the coil-globule transition of poly(N-isopropylacrylamide). However, the temperature response of the first water-solvation shell around the alkyl group exhibited a notable correlation with the phase-transition temperature. In addition, the temperature at which the hydrophobic hydration shell strength around the terminal alkyl group equals the bulk water density (TCRP) was slightly lower than the cloud point temperature (TCLP) for the methyl-terminated poly(Me(EO)nGE) and slightly higher for the ethyl-terminated poly(Et(EO)nGE). It was concluded that the polymer-chain fluctuation affects the relationship between TCRP and TCLP.
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Affiliation(s)
- Erika Terada
- Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Takuya Isono
- Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo 060-8628, Japan
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Toshifumi Satoh
- Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo 060-8628, Japan
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Takuya Yamamoto
- Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo 060-8628, Japan
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Toyoji Kakuchi
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Changchun 130012, China
| | - Shinichiro Sato
- Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo 060-8628, Japan
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
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6
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Ali N, Qiao J, Qi L. Preparation of pH-responsive block copolymers for separation of cephalosporin antibiotics by open-tubular capillary electrochromatography. J Chromatogr A 2023; 1694:463926. [PMID: 36948087 DOI: 10.1016/j.chroma.2023.463926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 03/09/2023] [Accepted: 03/13/2023] [Indexed: 03/24/2023]
Abstract
Stimuli-responsive block copolymers have exhibited their feasibility for drug delivery and analysis of biomolecules. However, study of the electrophoretic behavior of antibiotics by open tubular capillary electrochromatography (OT-CEC) based on smart block copolymers coatings is still a substantial challenge. Herein, we reported an OT-CEC protocol for analysis of cephalosporin antibiotics with pH-responsive block copolymers as coatings. By using the reversible addition-fragmentation chain-transfers radical polymerisation technique, the smart poly(styrene-maleic anhydride-acrylic acid) (P(St-MAn-AA)) was synthesized and subsequently chemical bonded onto the inner walls of amino-grafted capillaries. The pH induced changes in the stretch/curl states of P(St-MAn-AA) chains were used to generate an adjustable hydrophobic/hydrophilic interaction and hydrogen bonds between the polymer coatings and the analytes. The OT-CEC performance was evaluated by varying the monomer ratios, polymer coating amounts and layers, buffer concentrations and pH values. Baseline separation of the three-test antibiotics was achieved at pH 8.0. The proposed OT-CEC technique was further applied to the determination of rat serum antibiotics in the metabolic processes. The present work demonstrates an enhancement in antibiotics separation efficiency, and shows a great potential for the preparation of stimuli-responsive block copolymers coatings and in OT-CEC analysis of real samples in living bio-systems.
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Affiliation(s)
- Nasir Ali
- Beijing National Laboratory of Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, No. 2 Zhongguancun Beiyijie, Beijing 100190, China; University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China
| | - Juan Qiao
- Beijing National Laboratory of Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, No. 2 Zhongguancun Beiyijie, Beijing 100190, China; University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China
| | - Li Qi
- Beijing National Laboratory of Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, No. 2 Zhongguancun Beiyijie, Beijing 100190, China; University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China.
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7
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Stimuli-Responsive Self-Assembly of Poly(2-(Dimethylamino)ethyl Methacrylate-co-(oligo ethylene glycol)methacrylate) Random Copolymers and Their Modified Derivatives. Polymers (Basel) 2023; 15:polym15061519. [PMID: 36987299 PMCID: PMC10059824 DOI: 10.3390/polym15061519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/15/2023] [Accepted: 03/17/2023] [Indexed: 03/22/2023] Open
Abstract
In this work, the synthesis and the stimuli-responsive self-assembly behavior of novel double-hydrophilic poly(2-(dimethylamino)ethyl methacrylate-co-(oligo ethylene glycol)methacrylate) random copolymers and their chemically modified derivatives are presented. The synthesis of P(DMAEMA-co-OEGMA) copolymers of different DMAEMA mass compositions was successfully conducted through RAFT polymerization, further followed by the hydrophilic/hydrophobic quaternization with methyl iodide (CH3I), 1-iodohexane (C6H13I), and 1-iodododecane (C12H25I). The tertiary and quaternary amines are randomly arranged within the DMAEMA segment, responding thus to pH, temperature, and salt alterations in aqueous solutions. Light scattering techniques elucidated the intramolecular self-folding and intermolecular self-assembly of polymer chains of P(DMAEMA-co-OEGMA) copolymers upon exposure to different pHs and temperatures. Q(P(DMAEMA-co-OEGMA)) cationic polyelectrolytes demonstrated moderate response to pH, temperature, and ionic strength as a result of the permanent hydrophilic/hydrophobic profile, closely connected with the attached alkyl chains and the quaternization degree. Moreover, fluorescence spectroscopy measurements confirmed the internal micropolarity and the picture of the aggregate inner structure.
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8
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Thambi T, Jung JM, Lee DS. Recent strategies to develop pH-sensitive injectable hydrogels. Biomater Sci 2023; 11:1948-1961. [PMID: 36723174 DOI: 10.1039/d2bm01519f] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
"Smart" biomaterials that are responsive to pathological abnormalities are an appealing class of therapeutic platforms for the development of personalized medications. The development of such therapeutic platforms requires novel techniques that could precisely deliver therapeutic agents to the diseased tissues, resulting in enhanced therapeutic effects without harming normal tissues. Among various therapeutic platforms, injectable pH-responsive biomaterials are promising biomaterials that respond to the change in environmental pH. Aqueous solutions of injectable pH-responsive biomaterials exhibit a phase transition from sol-to-gel in response to environmental pH changes. The injectable pH-responsive hydrogel depot can provide spatially and temporally controlled release of various bioactive agents including chemotherapeutic drugs, peptides, and proteins. Therapeutic agents are imbibed into hydrogels by simple mixing without the use of toxic solvents and used for long-term storage or in situ injection using a syringe or catheter that could form a stable gel and acts as a controlled release depot in a minimally invasive manner. Tunable physicochemical properties of the hydrogels, such as biodegradability, ability to interact with drugs and mechanical properties, can control the release of the therapeutic agent. This review highlights the advances in the design and development of biodegradable and in situ forming injectable pH-responsive biomaterials that respond to the physiological conditions. Special attention has been paid to the development of amphoteric pH-responsive biomaterials and their utilization in biomedical applications. We also highlight key challenges and future directions of pH-responsive biomaterials in clinical translation.
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Affiliation(s)
- Thavasyappan Thambi
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Jae Min Jung
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Doo Sung Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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9
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Yukioka S, Yusa SI, Prajapati V, Kuperkar K, Bahadur P. Self-assembly in newly synthesized dual-responsive double hydrophilic block copolymers (DHBCs) in aqueous solution. Colloid Polym Sci 2023. [DOI: 10.1007/s00396-023-05075-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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10
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Abdollahi A, Dashti A. Photosensing of Chain Polarity and Visualization of Latent Fingerprints by Amine-Functionalized Polymer Nanoparticles Containing Oxazolidine. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.112038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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11
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Liu D, Wen G, Skandalis A, Pispas S, He G, Zhang W. Aggregation behavior of triblock terpolymer poly[
n
‐butyl acrylate‐
block
‐
N
‐isopropylacrylamide‐
block
‐2‐(dimethylamino)ethyl acrylate] at the air/water interface. J Appl Polym Sci 2022. [DOI: 10.1002/app.52989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dongxue Liu
- Department of Polymer Materials and Engineering, College of Material Science and Chemical Engineering Harbin University of Science and Technology Harbin People's Republic of China
| | - Gangyao Wen
- Department of Polymer Materials and Engineering, College of Material Science and Chemical Engineering Harbin University of Science and Technology Harbin People's Republic of China
| | - Athanasios Skandalis
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation Athens Greece
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation Athens Greece
| | - Guanying He
- Department of Polymer Materials and Engineering, College of Material Science and Chemical Engineering Harbin University of Science and Technology Harbin People's Republic of China
| | - Wang Zhang
- Department of Polymer Materials and Engineering, College of Material Science and Chemical Engineering Harbin University of Science and Technology Harbin People's Republic of China
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12
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Synthesis and characterization of chitosan-based graft copolymers with temperature-switchable and self-adaptive plugging performance for drilling in microporous formation. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Smirnova AV, Tenkovtsev AV, Filippov AP. Effect of Annealing at High Temperatures on the Morphology of Aqueous Solutions of Star-Shaped Poly(2-Isopropyl-2-Oxazoline) and Linear Poly(2-Ethyl-5,6-Dihydrooxazine). POLYMER SCIENCE SERIES C 2022. [DOI: 10.1134/s1811238222700072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Shi Y, Mudugamuwa CJ, Abeysinghe TN, Alotaibi YSM, Monteiro MJ, Chalker JM, Lutkenhaus JL, Jia Z. Ionic Effect on Electrochemical Behavior of Water-Soluble Radical Polyelectrolytes. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanlin Shi
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, Brisbane Queensland 4072, Australia
| | - Chanaka J. Mudugamuwa
- Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia
| | - Thidas N. Abeysinghe
- Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia
| | - Yasser S. M. Alotaibi
- Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia
| | - Michael J. Monteiro
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, Brisbane Queensland 4072, Australia
| | - Justin M. Chalker
- Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia
| | - Jodie L. Lutkenhaus
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Zhongfan Jia
- Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia
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15
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Dinda P, Anas M, Banerjee P, Mandal TK. Dual Thermoresponsive Boc-Lysine-Based Acryl Polymer: RAFT Kinetics and Anti-Protein-Fouling of Its Zwitterionic Form. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Priyanka Dinda
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Mahammad Anas
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Palash Banerjee
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Tarun K. Mandal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
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16
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Salminen L, Karjalainen E, Aseyev V, Tenhu H. Phase Separation of Aqueous Poly(diisopropylaminoethyl methacrylate) upon Heating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5135-5148. [PMID: 34752116 PMCID: PMC9069861 DOI: 10.1021/acs.langmuir.1c02224] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Poly(diisopropylaminoethyl methacrylate) (PDPA) is a pH- and thermally responsive water-soluble polymer. This study deepens the understanding of its phase separation behavior upon heating. Phase separation upon heating was investigated in salt solutions of varying pH and ionic strength. The effect of the counterion on the phase transition upon heating is clearly demonstrated for chloride-, phosphate-, and citrate-anions. Phase separation did not occur in pure water. The buffer solutions exhibited similar cloud points, but phase separation occurred in different pH ranges and with different mechanisms. The solution behavior of a block copolymer comprising poly(dimethylaminoethyl methacrylate) (PDMAEMA) and PDPA was investigated. Since the PDMAEMA and PDPA blocks phase separate within different pH- and temperature ranges, the block copolymer forms micelle-like structures at high temperature or pH.
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Affiliation(s)
- Linda Salminen
- Department
of Chemistry, University of Helsinki, P.O. Box 55, A.I. Virtasen aukio
1, FIN-00014 HY Helsinki, Finland
| | - Erno Karjalainen
- VTT
Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 VTT Espoo, Finland
| | - Vladimir Aseyev
- Department
of Chemistry, University of Helsinki, P.O. Box 55, A.I. Virtasen aukio
1, FIN-00014 HY Helsinki, Finland
| | - Heikki Tenhu
- Department
of Chemistry, University of Helsinki, P.O. Box 55, A.I. Virtasen aukio
1, FIN-00014 HY Helsinki, Finland
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17
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18
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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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19
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Qi L, Qiao J. Advances in stimuli-responsive polymeric coatings for open-tubular capillary electrochromatography. J Chromatogr A 2022; 1670:462957. [DOI: 10.1016/j.chroma.2022.462957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/27/2022] [Accepted: 03/09/2022] [Indexed: 10/18/2022]
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20
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Thermoresponsive Molecular Brushes with a Rigid-Chain Aromatic Polyester Backbone and Poly-2-alkyl-2-oxazoline Side Chains. Int J Mol Sci 2021; 22:ijms222212265. [PMID: 34830139 PMCID: PMC8622345 DOI: 10.3390/ijms222212265] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 02/07/2023] Open
Abstract
A new polycondensation aromatic rigid-chain polyester macroinitiator was synthesized and used to graft linear poly-2-ethyl-2-oxazoline as well as poly-2-isopropyl-2-oxazoline by cationic polymerization. The prepared copolymers and the macroinitiator were characterized by NMR, GPC, AFM, turbidimetry, static, and dynamic light scattering. The molar masses of the polyester main chain and the grafted copolymers with poly-2-ethyl-2-oxazoline and poly-2-isopropyl-2-oxazoline side chains were 26,500, 208,000, and 67,900, respectively. The molar masses of the side chains of poly-2-ethyl-2-oxazoline and poly-2-isopropyl-2-oxazoline and their grafting densities were 7400 and 3400 and 0.53 and 0.27, respectively. In chloroform, the copolymers conformation can be considered as a cylinder wormlike chain, the diameter of which depends on the side chain length. In water at low temperatures, the macromolecules of the poly-2-ethyl-2-oxazoline copolymer assume a wormlike conformation because their backbones are well shielded by side chains, whereas the copolymer with short side chains and low grafting density strongly aggregates, which was visualized by AFM. The phase separation temperatures of the copolymers were lower than those of linear analogs of the side chains and decreased with the concentration for both samples. The LCST were estimated to be around 45 °C for the poly-2-ethyl-2-oxazoline graft copolymer, and below 20 °C for the poly-2-isopropyl-2-oxazoline graft copolymer.
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Trindade SG, da Silveira NP, Loh W. Aggregation Behavior of Asymmetric Diblock Polyampholyte in Aqueous Solution over a Wide Range of pH and Ionic Strength. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Suelen G. Trindade
- Institute of Chemistry University of Campinas (UNICAMP) P.O. Box 6154 Campinas São Paulo 13083‐970 Brazil
| | - Nádya P. da Silveira
- Institute of Chemistry Federal University of Rio Grande do Sul (UFRGS) P.O. Box 9500 Porto Alegre Rio Grande do Sul 90650‐001 Brazil
| | - Watson Loh
- Institute of Chemistry University of Campinas (UNICAMP) P.O. Box 6154 Campinas São Paulo 13083‐970 Brazil
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Kirila T, Amirova A, Blokhin A, Tenkovtsev A, Filippov A. Features of Solution Behavior of Polymer Stars with Arms of Poly-2-alkyl-2-oxazolines Copolymers Grafted to the Upper Rim of Calix[8]arene. Polymers (Basel) 2021; 13:2507. [PMID: 34372110 PMCID: PMC8348004 DOI: 10.3390/polym13152507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/16/2021] [Accepted: 07/26/2021] [Indexed: 01/21/2023] Open
Abstract
Star-shaped polymers with arms of block and gradient copolymers of 2-ethyl- and 2-isopropyl-2-oxazolines grafted to the upper rim of calix[8]arene were synthesized by the "grafting from" method. The ratio of 2-ethyl- and 2-isopropyl-2-oxazoline units was 1:1. Molar masses and hydrodynamic characteristics were measured using molecular hydrodynamics and optics methods in 2-nitropropane. The arms of the synthesized stars were short and the star-shaped macromolecules were characterized by compact dimensions and heightened intramolecular density. The influence of the arm structure on the conformation of star molecules was not observed. At low temperatures, the aqueous solutions of the studied stars were not molecular dispersed but individual molecules prevailed. One phase transition was detected for all solutions. The phase separation temperatures decreased with a growth of the content of more hydrophobic 2-isopropyl-2-oxazoline units. It was shown that the way of arms grafting to the calix[8]arene core affects the behavior of aqueous solutions of star-shaped poly-2-alkyl-2-oxazoline copolymers. In the case of upper rim functionalization, the shape of calix[8]arene resembles a plate. Accordingly, the core is less shielded from the solvent and the phase separation temperatures are lower than those for star-shaped poly-2-alkyl-2-oxazolines with lower rim functionalization of the calix[8]arene.
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Affiliation(s)
- Tatyana Kirila
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy Pr. 31, 199004 Saint Petersburg, Russia; (A.A.); (A.B.); (A.T.); (A.F.)
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Chang CM, Chen HT, Chuang SH, Tsai HC, Hung WS, Lai JY. Mechanisms of one-dimensional and two-dimensional synergistic thermal responses on graphene oxide-modified PNIPAm framework membranes for control of molecular separation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118568] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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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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25
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Rahman MM, Alam MA, Ihara H, Takafuji M. Hetero-network hydrogels crosslinked with silica nanoparticles for strategic control of thermal responsive property. SOFT MATTER 2021; 17:4615-4622. [PMID: 33949589 DOI: 10.1039/d1sm00191d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Two thermoresponsive copolymers with different lower critical solution temperatures (LCSTs) were crosslinked using silica nanoparticles to afford hybrid hydrogels exhibiting two distinct thermo-responsivities. The thermo-responsive copolymers were synthesised by free radical polymerisation from a monomer with a reactive side chain (3-methacryloxypropyl trimethoxysilane (S)) and water-soluble monomers with different thermo-responsivities (N-isopropyl acrylamide (N) or N-(3-methoxy propyl)acrylamide (M)). The obtained reactive copolymers, poly(N-isopropyl acrylamide-co-3-methacryloxypropyl trimethoxysilane) (pNS) and poly(N-(3-methoxy propyl acrylamide-co-3-methacryloxypropyl trimethoxysilane)) (pMS), were characterized by multiple techniques including 1H NMR and FTIR spectroscopy. The hetero-network hybrid hydrogels were easily prepared by mixing aqueous solutions of the copolymer with an aqueous colloidal silica suspension; their gelation properties could be tuned by varying the amounts of pNS, pMS, and Si. Differential scanning calorimetric analysis showed that the hetero-network hydrogel exhibited a critical two-step phase transition at temperatures around the LCST of each copolymer (33 °C for pNS, 73 °C for pMS), indicating that each polymer does not disturb the phase transitions of the other. The deswelling of the hetero-network hydrogel could be controlled with respect to temperature and time.
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Affiliation(s)
- M Maria Rahman
- Department of Applied Chemistry and Biochemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Japan. and Department of Chemistry, Faculty of Science, Jagannath University, Dhaka-1100, Bangladesh
| | - Md Ashraful Alam
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, Noakhali Science and Technology University, Noakhali, Sonapur-3814, Bangladesh
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Japan. and Okinawa College, National Institute of Technology, 905 Henoko, Nago, Okinawa 905-2192, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Japan.
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Zhou Y, Yang R, Fan X, Sun M, He X. Self‐assembly of telechelic polymers bearing adamantane groups via host‐guest inclusion complexes with cyclodextrin polymer. J Appl Polym Sci 2021. [DOI: 10.1002/app.49520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yingxue Zhou
- Department of Polymeric Materials and Engineering, School of Materials Science and Engineering Xi'an Polytechnic University Xi'an China
| | - Rongrong Yang
- Department of Polymeric Materials and Engineering, School of Materials Science and Engineering Xi'an Polytechnic University Xi'an China
| | - Xiaodong Fan
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science Northwestern Polytechnical University Xi'an China
| | - Mengmeng Sun
- Department of Polymeric Materials and Engineering, School of Materials Science and Engineering Xi'an Polytechnic University Xi'an China
| | - Xinhai He
- Department of Polymeric Materials and Engineering, School of Materials Science and Engineering Xi'an Polytechnic University Xi'an China
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27
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Stimuli-responsive polymersomes of poly [2-(dimethylamino) ethyl methacrylate]-b-polystyrene. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-020-03533-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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28
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Falireas PG, Ladmiral V, Ameduri B. Synthesis, aqueous solution behavior and self-assembly of a dual pH/thermo-responsive fluorinated diblock terpolymer. Polym Chem 2021. [DOI: 10.1039/d0py01515f] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of fluorinated dual-responsive block terpolymers via sequential reversible addition–fragmentation chain transfer (RAFT) polymerization is presented.
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Rodchenko S, Amirova A, Kurlykin M, Tenkovtsev A, Milenin S, Filippov A. Amphiphilic Molecular Brushes with Regular Polydimethylsiloxane Backbone and Poly-2-isopropyl-2-oxazoline Side Chains. 2. Self-Organization in Aqueous Solutions on Heating. Polymers (Basel) 2020; 13:E31. [PMID: 33374766 PMCID: PMC7796000 DOI: 10.3390/polym13010031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/18/2020] [Accepted: 12/20/2020] [Indexed: 01/18/2023] Open
Abstract
The behavior of amphiphilic molecular brushes in aqueous solutions on heating was studied by light scattering and turbidimetry. The main chain of the graft copolymers was polydimethylsiloxane, and the side chains were thermosensitive poly-2-isopropyl-2-oxazoline. The studied samples differed in the length of the grafted chains (polymerization degrees were 14 and 30) and, accordingly, in the molar fraction of the hydrophobic backbone. The grafting density of both samples was 0.6. At low temperatures, macromolecules and aggregates, which formed due to the interaction of main chains, were observed in solutions. At moderate temperatures, heating solutions of the sample with short side chains led to aggregation due to dehydration of poly-2-isopropyl-2-oxazoline and the formation of intermolecular hydrogen bonds. In the case of the brush with long grafted chains, dehydration caused the formation of intramolecular hydrogen bonds and the compaction of molecules and aggregates. The lower critical solution temperature for solutions of the sample with long side chains was higher than LCST for the sample with short side chains. It was shown that the molar fraction of the hydrophobic component and the intramolecular density are the important factors determining the LCST behavior of amphiphilic molecular brushes in aqueous solutions.
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Affiliation(s)
- Serafim Rodchenko
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Alina Amirova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Mikhail Kurlykin
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Andrey Tenkovtsev
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Sergey Milenin
- Enikolopov Institute of Synthetic Polymeric Materials of the Russian Academy of Sciences, Profsoyuznaya, 70, 117393 Moscow, Russia;
| | - Alexander Filippov
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
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30
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pH and temperature-responsive POSS-based poly(2-(dimethylamino)ethyl methacrylate) for highly efficient Cr(VI) adsorption. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04737-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Göktaş M. Synthesis and characterization of temperature-responsive block copolymers using macromonomeric initiator. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01074-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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32
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Effects of Chemical Modifications on the Thermoresponsive Behavior of a PDMAEA-b-PNIPAM-b-POEGA Triblock Terpolymer. Polymers (Basel) 2020; 12:polym12061382. [PMID: 32575556 PMCID: PMC7361810 DOI: 10.3390/polym12061382] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/16/2020] [Accepted: 06/17/2020] [Indexed: 12/03/2022] Open
Abstract
In this work, the synthesis, selective chemical modifications, and self-assembly behavior in aqueous media of a novel poly(2-(dimethylamino)ethyl acrylate)20-b-poly(N-isopropylacrylamide)11-b-poly(oligo ethylene glycol methyl ether acrylate)18 (PDMAEA20-b-PNIPAM11-b-POEGA18) dual-responsive (pH and temperature) and triply hydrophilic amino-based triblock terpolymer are reported. The amine functional triblock terpolymer was synthesized by sequential reversible addition fragmentation chain transfer polymerization (RAFT) polymerization and molecularly characterized by size exclusion chromatography (SEC) and 1H-NMR spectroscopy that evidenced the success of the three-step polymerization scheme. The tertiary amine pendant groups of the PDMAEA block were chemically modified in order to produce the Q1PDMAEA20-b-PNIPAM11-b-POEGA18 as well as the Q6PDMAEA20-b-PNIPAM11-b-POEGA18 quaternized triblock terpolymers (Q1 and Q6 prefixes show the number of carbon atoms (C1 and C6) attached on the PDMAEA groups) using methyl iodide (CH3I) and 1-iodohexane (C6H13I) as the quaternizing agents and the SPDMAEA20-b-PNIPAM11-b-POEGA18 sulfobetainized triblock terpolymer using 1,3 propanesultone (C3H6O3S) as the sulfobetainization agent. The self-assembly properties of the triblock terpolymers in aqueous solutions upon varying temperature and solution pH were studied by light scattering and fluorescence spectroscopy experiments. The novel triblock terpolymers self-assemble into nanosized aggregates upon solution temperature rise above the nominal lower critical solution temperature (LCST) of the temperature-responsive PNIPAM block. The remarkable stimuli-responsive self-assembly behavior of the novel triblock terpolymers in aqueous media make them interesting candidates for biomedical applications in the fields of drug and gene delivery.
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Amirova A, Kirila T, Kurlykin M, Tenkovtsev A, Filippov A. Influence of Cross-Linking Degree on Hydrodynamic Behavior and Stimulus-Sensitivity of Derivatives of Branched Polyethyleneimine. Polymers (Basel) 2020; 12:polym12051085. [PMID: 32397458 PMCID: PMC7284568 DOI: 10.3390/polym12051085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/05/2020] [Accepted: 05/07/2020] [Indexed: 12/13/2022] Open
Abstract
Cross-linked derivatives of acylated branched polyethyleneimine containing 2-isopropyl-2-oxazoline units were investigated in chloroform and aqueous solutions using methods of molecular hydrodynamics, static and dynamic light scattering, and turbidity. The studied samples differed by the cross-linker content. The solubility of the polyethyleneimines studied worsened with the increasing mole fraction of the cross-linker. Cross-linked polyethyleneimines were characterized by small dimensions in comparison with linear analogs; the increase in the cross-linker content leads to a growth of intramolecular density. At low temperatures, the aqueous solutions of investigated samples were molecularly dispersed, and the large aggregates were formed due to the dehydration of oxazoline units and the formation of intermolecular hydrogen bonds. For the cross-linked polyethyleneimines, the phase separation temperatures were lower than that for linear and star-shaped poly-2-isopropyl-2-oxazolines. The low critical solution temperature of the solutions of studied polymers decreased with the increasing cross-linker mole fraction. The time of establishment of the constant characteristics of the studied solutions after the jump-like change in temperature reaches 3000 s, which is at least two times longer than for linear polymers.
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Nita LE, Chiriac AP, Rusu AG, Ghilan A, Dumitriu RP, Bercea M, Tudorachi N. Stimuli Responsive Scaffolds Based on Carboxymethyl Starch and Poly(2‐Dimethylaminoethyl Methacrylate) for Anti‐Inflammatory Drug Delivery. Macromol Biosci 2020; 20:e1900412. [DOI: 10.1002/mabi.201900412] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/21/2020] [Indexed: 12/28/2022]
Affiliation(s)
- Loredana Elena Nita
- “Petru Poni” Institute of Macromolecular Chemistry 41‐A Grigore Ghica Voda Alley RO‐700487 Iasi Romania
| | - Aurica P. Chiriac
- “Petru Poni” Institute of Macromolecular Chemistry 41‐A Grigore Ghica Voda Alley RO‐700487 Iasi Romania
| | - Alina Gabriela Rusu
- “Petru Poni” Institute of Macromolecular Chemistry 41‐A Grigore Ghica Voda Alley RO‐700487 Iasi Romania
| | - Alina Ghilan
- “Petru Poni” Institute of Macromolecular Chemistry 41‐A Grigore Ghica Voda Alley RO‐700487 Iasi Romania
| | - Raluca P. Dumitriu
- “Petru Poni” Institute of Macromolecular Chemistry 41‐A Grigore Ghica Voda Alley RO‐700487 Iasi Romania
| | - Maria Bercea
- “Petru Poni” Institute of Macromolecular Chemistry 41‐A Grigore Ghica Voda Alley RO‐700487 Iasi Romania
| | - Nita Tudorachi
- “Petru Poni” Institute of Macromolecular Chemistry 41‐A Grigore Ghica Voda Alley RO‐700487 Iasi Romania
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Xian Y, Shui Y, Li M, Pei C, Zhang Q, Yao Y. pH‐Dependent thermoresponsive poly[2‐(diethylamino)ethyl acrylamide]‐grafted PVDF membranes with switchable wettability for efficient emulsion separation. J Appl Polym Sci 2020. [DOI: 10.1002/app.49032] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yupei Xian
- School of Chemical EngineeringSichuan University Chengdu Sichuan People's Republic of China
| | - Yonggang Shui
- School of Chemical EngineeringSichuan University Chengdu Sichuan People's Republic of China
| | - Meimei Li
- Textile InstituteSichuan University Chengdu Sichuan People's Republic of China
| | - Cunbao Pei
- Textile InstituteSichuan University Chengdu Sichuan People's Republic of China
| | - Qiyi Zhang
- School of Chemical EngineeringSichuan University Chengdu Sichuan People's Republic of China
| | - Yongyi Yao
- Textile InstituteSichuan University Chengdu Sichuan People's Republic of China
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Konefał R, Spěváček J, Mužíková G, Laga R. Thermoresponsive behavior of poly(DEGMA)-based copolymers. NMR and dynamic light scattering study of aqueous solutions. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109488] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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37
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Lechuga-Islas VD, Festag G, Rosales-Guzmán M, Vega-Becerra OE, Guerrero-Santos R, Schubert US, Guerrero-Sánchez C. Quasi-block copolymer design of quaternized derivatives of poly(2-(dimethylamino)ethyl methacrylate): Investigations on thermo-induced self-assembly. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2019.109457] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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38
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Zou H, Wu Q, Li Q, Wang C, Zhou L, Hou XH, Yuan W. Thermo- and redox-responsive dumbbell-shaped copolymers: from structure design to the LCST–UCST transition. Polym Chem 2020. [DOI: 10.1039/c9py01566c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Redox- and thermo-responsive dumbbell-shaped copolymers and their self-assembly and stimuli-responsive properties were investigated.
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Affiliation(s)
- Hui Zou
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Qiliang Wu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Qianwei Li
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Chunyao Wang
- School of Materials Science and Engineering
- Tongji University
- People's Republic of China
| | - Li Zhou
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Xiao-Hua Hou
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Weizhong Yuan
- School of Materials Science and Engineering
- Tongji University
- People's Republic of China
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Xiao Z, Wang L, Lv C, Guo S, Lu X, Tao L, Duan Q, Yang Q, Luo Z. Preparation and characterization of pH-responsive Pickering emulsion stabilized by grafted carboxymethyl starch nanoparticles. Int J Biol Macromol 2020; 143:401-412. [DOI: 10.1016/j.ijbiomac.2019.10.261] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 12/19/2022]
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Kumbhakar K, Saha B, De P, Biswas R. Cloud Point Driven Dynamics in Aqueous Solutions of Thermoresponsive Copolymers: Are They Akin to Criticality Driven Solution Dynamics? J Phys Chem B 2019; 123:11042-11054. [PMID: 31794221 DOI: 10.1021/acs.jpcb.9b07840] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cloud point driven interaction and relaxation dynamics of aqueous solutions of amphiphilic thermoresponsive copolymers were explored through picosecond resolved and steady state fluorescence measurements employing hydrophilic (coumarin 343, C343) and hydrophobic (coumarin 153, C153) solute probes of comparable sizes. These thermoresponsive random copolymers, with tunable cloud point temperatures (Tcp's) between 298 and 323 K, were rationally designed first and then synthesized via reversible addition-fragmentation chain transfer (RAFT) copolymerization of methyl methacrylate (MMA) and poly(ethylene glycol) monomethyl ether methacrylate (PEGMA). Subsequently, copolymers were characterized by NMR spectroscopy and size exclusion chromatography (SEC). A balance between the hydrophilic (PEGMA) and the hydrophobic (MMA) content dictates the critical aggregation concentration (CAC), with CAC ∼ 2-14 mg/L for these copolymers in aqueous media. No abrupt changes in the steady state spectral features of both C153 and C343 in the aqueous solutions of these polymers near but below the cloud point temperatures were observed. Interestingly, spectral properties of C153 in these solutions show the impact of hydrophobic/hydrophilic interaction balance but not by those of C343. More specifically, C153 reported a blue shift (relative to that in neat water) and heterogeneity in its local environment. This suggested different locations for the hydrophilic (C343) and the hydrophobic (C153) probes. In addition, the excited state fluorescence lifetime (⟨τlife⟩) of C153 increased with the increase of hydrophobic (MMA) content in these copolymers. However, C343 reported no such variations, although fluorescence anisotropy decays for both solutes were significantly slowed down in these aqueous solutions compared to neat water. Anisotropy decays indicated bimodal time-dependent friction for these solutes in aqueous solutions of these copolymers but monomodal in neat water. A linear dependence of the average rotational relaxation rates (⟨krot⟩ = ⟨τrot⟩-1) of the type ⟨krot⟩ ∝ (|T - Tcp|/Tcp)γ with negative values for the exponent γ was observed for both solutes. No slowing down of the solute rotation with temperature approaching the Tcp was detected; rather, rotation became faster upon increasing the solution temperature, suggesting domination of the local friction.
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Affiliation(s)
- Kajal Kumbhakar
- Chemical, Biological and Macromolecular Sciences (CBMS) , S. N. Bose National Centre for Basic Sciences , JD Block, Sector III, Salt Lake, Kolkata 700106 , India
| | - Biswajit Saha
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur 741246 , Nadia, West Bengal , India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur 741246 , Nadia, West Bengal , India
| | - Ranjit Biswas
- Chemical, Biological and Macromolecular Sciences (CBMS) , S. N. Bose National Centre for Basic Sciences , JD Block, Sector III, Salt Lake, Kolkata 700106 , India
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Mintis DG, Dompé M, Kamperman M, Mavrantzas VG. Effect of Polymer Concentration on the Structure and Dynamics of Short Poly(N,N-dimethylaminoethyl methacrylate) in Aqueous Solution: A Combined Experimental and Molecular Dynamics Study. J Phys Chem B 2019; 124:240-252. [DOI: 10.1021/acs.jpcb.9b08966] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dimitris G. Mintis
- Department of Chemical Engineering, University of Patras & FORTH-ICE/HT, GR 26504 Patras, Greece
| | - Marco Dompé
- Physical Chemistry and Soft Matter, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Marleen Kamperman
- Polymer Science, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Vlasis G. Mavrantzas
- Department of Chemical Engineering, University of Patras & FORTH-ICE/HT, GR 26504 Patras, Greece
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zürich, CH-8092 Zürich, Switzerland
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Tarabukina E, Rozanova A, Fundueanu G, Constantin M, Harabagiu V, Filippov A. Thermo-Sensitivity of poly-N-isopropylacrylamide with Statistically Introduced D,L-Allylglycine Betainic Units. J MACROMOL SCI B 2019. [DOI: 10.1080/00222348.2019.1695379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Elena Tarabukina
- Institute of Macromolecular Compounds of Russian Academy of Sciences, Saint-Petersburg, Russia
| | - Anna Rozanova
- Higher School of Technology and Energetics, Saint-Petersburg, Russia
| | | | | | | | - Alexander Filippov
- Institute of Macromolecular Compounds of Russian Academy of Sciences, Saint-Petersburg, Russia
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Yang Z, Fan W, Zou J, Tang W, Li L, He L, Shen Z, Wang Z, Jacobson O, Aronova MA, Rong P, Song J, Wang W, Chen X. Precision Cancer Theranostic Platform by In Situ Polymerization in Perylene Diimide-Hybridized Hollow Mesoporous Organosilica Nanoparticles. J Am Chem Soc 2019; 141:14687-14698. [PMID: 31466436 DOI: 10.1021/jacs.9b06086] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Phototheranostics refers to advanced photonics-mediated theranostic methods for cancer and includes imaging-guided photothermal/chemotherapy, photothermal/photodynamic therapy, and photodynamic/chemotherapy, which are expected to provide a paradigm of modern precision medicine. In this regard, various phototheranostic drug delivery systems with excellent photonic performance, controlled drug delivery/release, and precise photoimaging guidance have been developed. In this study, we reported a special "in situ framework growth" method to synthesize novel phototheranostic hollow mesoporous nanoparticles by ingenious hybridization of perylene diimide (PDI) within the framework of small-sized hollow mesoporous organosilica (HMO). The marriage of PDI and HMO endowed the phototheranostic silica nanoparticles (HMPDINs) with largely amplified fluorescence and photoacoustic signals, which can be used for enhanced fluorescence and photoacoustic imaging. The organosilica shell can be chemically chelated with isotope 64Cu for positron emission tomography imaging. Moreover, in situ polymer growth was introduced in the hollow structure of the HMPDINs to produce thermosensitive polymer (TP) in the cavity of HMPDINs to increase the loading capacity and prevent unexpected leakage of the hydrophobic drug SN38. Furthermore, the framework-hybridized PDI generated heat under near-infrared laser irradiation to trigger the deformation of TP for controlled drug release in the tumor region. The fabricated hybrid nanomedicine with organic-inorganic characteristic not only increases the cancer theranostic efficacy but also offers an attractive solution for designing powerful theranostic platforms.
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Affiliation(s)
- Zhen Yang
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital , Central South University , Changsha , Hunan 410083 , China
| | | | | | | | | | | | | | | | | | | | - Pengfei Rong
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital , Central South University , Changsha , Hunan 410083 , China.,Engineering and Technology Research Center for Xenotransplantation of Hunan Province , Changsha , Hunan 410000 , China
| | - Jibin Song
- MOE Key Laboratory for Analytical Science of Food Safety and Biology College of Chemistry , Fuzhou University , Fuzhou 350108 , China
| | - Wei Wang
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital , Central South University , Changsha , Hunan 410083 , China.,Engineering and Technology Research Center for Xenotransplantation of Hunan Province , Changsha , Hunan 410000 , China
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Sun M, Yu X, Wang T, Bi S, Liu Y, Chen X. Nasal adaptive chitosan-based nano-vehicles for anti-allergic drug delivery. Int J Biol Macromol 2019; 135:1182-1192. [DOI: 10.1016/j.ijbiomac.2019.05.188] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 05/16/2019] [Accepted: 05/26/2019] [Indexed: 12/18/2022]
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45
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Xiao Y, Tang C, Chen Y, Lang M. Dual stimuli-responsive polypeptide prepared by thiol-ene click reaction of poly(l-cysteine) and N, N-dimethylaminoethyl acrylate. Biopolymers 2019; 110:e23318. [PMID: 31274198 DOI: 10.1002/bip.23318] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 06/03/2019] [Accepted: 06/13/2019] [Indexed: 12/28/2022]
Abstract
Stimuli-responsive polymers that can undergo conformational changes with external triggers have enabled themselves as smart materials for various utilizations, among which biodegradability is of particular importance to be engineered for biomedical application. In this study, a thermo and pH dual responsive polypeptide (N, N-dimethylaminoethyl acrylate-modified poly(l-cysteine)) (PLC-g-DMAEA) was prepared by the combination of N-carboxyanhydride ring-open polymerization and thiol-ene click chemistry. The biodegradable poly(l-cysteine) (PLC) with pendant thiol groups provided an easily clickable backbone for postmodification, which was demonstrated by reacting with a well-known monomer of N, N-dimethylaminoethyl acrylate (DMAEA) to achieve both temperature and pH responsiveness. The irreversible thermo-response of PLC-g-DMAEA could be attributed to the ordered β-sheets formed upon heating, leading to the trapped side groups with poor water accessibility. Moreover, this copolymer precipitated at pH ranging from 7.5 to 9.7, but protonation of tertiary amine groups (pH < 7.5) and salt forming of masked thiol groups (pH > 9.7) rendered it soluble in water. Our results revealed that a ready available vinyl monomer could be easily clicked onto the biodegradable PLC and its stimuli responsiveness would be reserved. Moreover, the primary and secondary structures of PLC might influence the conformation, thus leading to the unique responsive behavior of the resulted copolymer.
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Affiliation(s)
- Yan Xiao
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Chenna Tang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Yang Chen
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Meidong Lang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
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Abutalip M, Mahmood A, Rakhmetullayeva R, Shakhvorostov A, Dauletov Y, Kudaibergenov S, Nuraje N. Reversible Addition?Fragmentation Chain-Transfer Polymerization of Amphiphilic Polycarboxybetaines and Their Molecular Interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8389-8397. [PMID: 31199657 DOI: 10.1021/acs.langmuir.9b01347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, we report the first molecular weight-controlled amphiphilic polybetaine synthesis using various hydrocarbons via reversible addition?fragmentation chain-transfer (RAFT) polymerization. The experimental separation of the alkyl aminocrotonate tautomers, which has been the subject of debate, was completed for the first time. The enamine form of these tautomers was further used as a monomer for the RAFT polymerization of amphiphilic polycarboxybetaines. Self-assembly of the amphiphilic polycarboxybetaines showed micelle structures from spherical, rod-like to fractal in the aqueous media due to the competition between both electrostatic and hydrophobic forces. Hydrophobically dominant interactions among amphiphilic polycarboxybetaines and long-chain hydrocarbon alkane molecules were investigated to understand long-chain hydrocarbon alkane crystallization using alkane crystal deposition and viscosity experiments. Strong hydrophobic forces between poly(hexadecyl-grafted aminocrotonate?methacrylic acid) and long-chain hydrocarbon alkane molecules changed the surface properties of the long-chain hydrocarbon alkane nucleus and inhibited the growth of paraffin crystals.
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Affiliation(s)
- Munziya Abutalip
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
- Department of Chemistry and Chemical Technology , Al-Farabi Kazakh National University , Almaty 050040 , Kazakhstan
| | - Anam Mahmood
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
| | - Raikhan Rakhmetullayeva
- Department of Chemistry and Chemical Technology , Al-Farabi Kazakh National University , Almaty 050040 , Kazakhstan
| | - Alexey Shakhvorostov
- Laboratory of Engineering Profile , K.I. Satpayev Kazakh National Research Technical University , Almaty 050013 , Kazakhstan
- Institute of Polymer Materials and Technology , Almaty 050013 , Kazakhstan
| | - Yerbol Dauletov
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
| | - Sarkyt Kudaibergenov
- Laboratory of Engineering Profile , K.I. Satpayev Kazakh National Research Technical University , Almaty 050013 , Kazakhstan
- Institute of Polymer Materials and Technology , Almaty 050013 , Kazakhstan
| | - Nurxat Nuraje
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
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Zhu X, Duan X, Bai T, Zhang X, Wang T, Cao T, Fan X. Synthesis of Novel pH-Tunable Thermoresponsive Hydroxyl-Terminated Hyperbranched Polyether. Polymers (Basel) 2019; 11:E895. [PMID: 31100869 PMCID: PMC6572042 DOI: 10.3390/polym11050895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/09/2019] [Accepted: 05/14/2019] [Indexed: 11/22/2022] Open
Abstract
In this study, a new pH-tunable thermoresponsive hydroxyl-terminated hyperbranched polyether (HTHP 2) was successfully prepared via a one-pot cationic polymerization technique and postmodification. In the first step, hydroxyl-terminated hyperbranched polyether containing double bonds (HTHP 1) were synthesized. Then, through thiol-ene "click" reaction, pH-responsive carboxyl groups were introduced to the target polymer of HTHP 2. The products were characterized via Fourier-transform infrared spectra (FTIR), nuclear magnetic resonance (NMR), and size-exclusion chromatography-multiangle laser light scattering (SEC-MALLS). Moreover, dynamic light scattering (DLS) and UV-Vis spectroscopy was employed to study the pH- and thermoresponsiveness in detail. Results showed that HTHP 2 possessed typical pH-controllable thermoresponsive behavior. By regulating the solution pH value range 3.0-5.4, LCST of HTHP 2 could be changed from 12.8 to 68.0 °C. Meanwhile, the cell viabilities of A549 cells were more than 80% for in vitro cytotoxicity tests of HTHP 2, suggested that HTHP 2 polymers are of good biocompatibility for up to 24 h.
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Affiliation(s)
- Xiuzhong Zhu
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Xiao Duan
- Department of Pharmceutical analysis of Changzhi Medical College, Changzhi 046000, China.
| | - Ting Bai
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Xuan Zhang
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Tong Wang
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Tao Cao
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Xiaodong Fan
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
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Ma Y, Wang X, Ye J, Ge K, Wang Y, He J, Zhang Y, Yang Y. HPW/PDMAEMA-b-PMAA/ZIF-8 Ternary Lamellar Composite and the Photocatalytic Degradation of Methylene Blue. Chem Asian J 2019; 14:1066-1075. [PMID: 30701675 DOI: 10.1002/asia.201801785] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/24/2019] [Indexed: 11/07/2022]
Abstract
PDMAEMA-b-PMAA block copolymers were prepared by the sequential RAFT polymerization of DMAEMA and tBMA, followed by hydrolysis. Phosphotungstic acid (HPW) was anchored to the PDMAEMA blocks through electrostatic interactions and the as-obtained HPW/PDMAEMA-b-PMAA was added to the synthesis of ZIF-8. During the formation of ZIF-8, the PMAA blocks coordinated to the Zn2+ ions through their carboxy groups, along with the HPW groups that were anchored to the PDMAEMA blocks. In this way, the block copolymer could consolidate the interactions between HPW and ZIF-8 and prevent the leakage of HPW. Finally, the HPW/PDMAEMA-b-PMAA/ZIF-8 ternary lamellar composite was obtained and the structure of the HPW/PDMAEMA-b-PMAA/ZIF-8 hybrid material was characterized by using powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). As a photocatalyst, the HPW/PDMAEMA-b-PMAA/ZIF-8 ternary lamellar composite showed excellent photoactivity for the degradation of methylene blue (MB). The rate of degradation of MB was 0.0240 min-1 , which was 7.5-times higher than that of commercially available P25 (0.0032 min-1 ). In the presence of H2 O2 , the kinetic degradation parameters of the composite reached 0.0634 min-1 , which was about 19.8-times higher than that of P25.
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Affiliation(s)
- Yehui Ma
- Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Xiaobei Wang
- Department of Materials Engineering, North China Institute of Aerospace Engineering, Langfang, 065000, P. R. China
| | - Jin Ye
- Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Kai Ge
- Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Yuanyuan Wang
- Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Jiahui He
- Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Yue Zhang
- Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Yongfang Yang
- Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
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Zhao X, Abutalip M, Afroz K, Nuraje N. Hydrophobically Modified Polycarboxybetaine: From Living Radical Polymerization to Self-Assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1606-1612. [PMID: 30558424 DOI: 10.1021/acs.langmuir.8b03561] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Polybetaines have received widespread attention due to their smart response properties and structures which resemble biological polymers like peptides and DNA. However, few studies have focused on the controlled synthesis and self-assembly of hydrophobically modified polybetaines due to the difficulty of synthesizing these materials. We report the first molecular weight-controlled synthesis of hydrophobically modified polycarboxybetaines (HMPCB). Poly(dodecyl grafted aminocrotonate -methacrylic acid) (P(DACRO-MAA)) was synthesized via the reversible addition-fragmentation chain-transfer (RAFT) polymerization approach. The two different tautomers of the monomer were also successfully identified and separated via thin layer chromatography (TLC) and column chromatography, making it possible to obtain pure polycarboxybetaine via RAFT synthesis. Both the successfully separated enamine form of the monomer and the resulting polycarboxybetaine were confirmed via FTIR and NMR. The polycarboxybetaine was found to have a low polydispersity (PDI) of 1.214, and its molecular weight was determined as 70590 g/mol via gel permeation chromatography (GPC) measurements. Spherical, rodlike, and fractal assembled structures for the P(DACRO-MAA) were observed with pH change using TEM, zeta sizer, and dynamic light scattering (DLS). The unique self-assembled structures of HMPCB synthesized via RAFT provide an opportunity to understand fundamental polymer science and can be engineered for broad applications.
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Affiliation(s)
- Xiao Zhao
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
| | - Munziya Abutalip
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
- Department of Chemistry and Chemical Technology , al-Farabi Kazakh National University , Almaty , Kazakhstan
| | - Khurshida Afroz
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
| | - Nurxat Nuraje
- Department of Chemical Engineering , Texas Tech University , Lubbock , Texas 79409 , United States
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