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Kronek J, Minarčíková A, Kroneková Z, Majerčíková M, Strasser P, Teasdale I. Poly(2-isopropenyl-2-oxazoline) as a Versatile Functional Polymer for Biomedical Applications. Polymers (Basel) 2024; 16:1708. [PMID: 38932057 PMCID: PMC11207257 DOI: 10.3390/polym16121708] [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: 01/30/2024] [Revised: 04/16/2024] [Accepted: 05/23/2024] [Indexed: 06/28/2024] Open
Abstract
Functional polymers play an important role in various biomedical applications. From many choices, poly(2-isopropenyl-2-oxazoline) (PIPOx) represents a promising reactive polymer with great potential in various biomedical applications. PIPOx, with pendant reactive 2-oxazoline groups, can be readily prepared in a controllable manner via several controlled/living polymerization methods, such as living anionic polymerization, atom transfer radical polymerization (ATRP), reversible addition-fragmentation transfer (RAFT) or rare earth metal-mediated group transfer polymerization. The reactivity of pendant 2-oxazoline allows selective reactions with thiol and carboxylic group-containing compounds without the presence of any catalyst. Moreover, PIPOx has been demonstrated to be a non-cytotoxic polymer with immunomodulative properties. Post-polymerization functionalization of PIPOx has been used for the preparation of thermosensitive or cationic polymers, drug conjugates, hydrogels, brush-like materials, and polymer coatings available for drug and gene delivery, tissue engineering, blood-like materials, antimicrobial materials, and many others. This mini-review covers new achievements in PIPOx synthesis, reactivity, and use in biomedical applications.
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Affiliation(s)
- Juraj Kronek
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (A.M.); (Z.K.); (M.M.)
| | - Alžbeta Minarčíková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (A.M.); (Z.K.); (M.M.)
| | - Zuzana Kroneková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (A.M.); (Z.K.); (M.M.)
| | - Monika Majerčíková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (A.M.); (Z.K.); (M.M.)
| | - Paul Strasser
- Institute of Polymer Chemistry, Johannes Kepler University, Altenbergerstrasse 69, 4040 Linz, Austria; (P.S.); (I.T.)
| | - Ian Teasdale
- Institute of Polymer Chemistry, Johannes Kepler University, Altenbergerstrasse 69, 4040 Linz, Austria; (P.S.); (I.T.)
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2
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Zhao Z, Li H, Gao X. Microwave Encounters Ionic Liquid: Synergistic Mechanism, Synthesis and Emerging Applications. Chem Rev 2024; 124:2651-2698. [PMID: 38157216 DOI: 10.1021/acs.chemrev.3c00794] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Progress in microwave (MW) energy application technology has stimulated remarkable advances in manufacturing and high-quality applications of ionic liquids (ILs) that are generally used as novel media in chemical engineering. This Review focuses on an emerging technology via the combination of MW energy and the usage of ILs, termed microwave-assisted ionic liquid (MAIL) technology. In comparison to conventional routes that rely on heat transfer through media, the contactless and unique MW heating exploits the electromagnetic wave-ions interactions to deliver energy to IL molecules, accelerating the process of material synthesis, catalytic reactions, and so on. In addition to the inherent advantages of ILs, including outstanding solubility, and well-tuned thermophysical properties, MAIL technology has exhibited great potential in process intensification to meet the requirement of efficient, economic chemical production. Here we start with an introduction to principles of MW heating, highlighting fundamental mechanisms of MW induced process intensification based on ILs. Next, the synergies of MW energy and ILs employed in materials synthesis, as well as their merits, are documented. The emerging applications of MAIL technologies are summarized in the next sections, involving tumor therapy, organic catalysis, separations, and bioconversions. Finally, the current challenges and future opportunities of this emerging technology are discussed.
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Affiliation(s)
- Zhenyu Zhao
- School of Chemical Engineering and Technology, National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Hong Li
- School of Chemical Engineering and Technology, National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Xin Gao
- School of Chemical Engineering and Technology, National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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3
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Behroozi Kohlan T, Atespare AE, Yildiz M, Menceloglu YZ, Unal S, Dizman B. Amphiphilic Polyoxazoline Copolymer-Imidazole Complexes as Tailorable Thermal Latent Curing Agents for One-Component Epoxy Resins. ACS OMEGA 2023; 8:47173-47186. [PMID: 38107921 PMCID: PMC10720278 DOI: 10.1021/acsomega.3c07177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/29/2023] [Accepted: 11/16/2023] [Indexed: 12/19/2023]
Abstract
One-component epoxy resins (OCERs) are proposed to overcome the energy inefficiency and processing difficulties of conventional two-component epoxy resins by employing latent curing agents, specifically thermal latent curing agents (TLCs). Despite recent progress, the need for TLCs with a simple preparation method for different curing agents, epoxy resins, and process conditions remains. Here, tailorable TLCs were prepared by forming complexes between imidazole (Im) and amphiphilic polyoxazoline copolymers with tunable structures and properties by a solvent evaporation method. The obtained TLCs were manually mixed with DGEBA to prepare OCERs. The miscibility of the complexes with DGEBA was studied, considering the functionalities of copolymers. The curing behaviors of TLCs were compared using dynamic Differential Scanning Calorimetry (DSC) studies considering the side chain and composition of the copolymers, copolymer:Im ratio, and concentration of Im in DGEBA. The curing behavior of the promising OCERs was studied by isothermal DSC studies to investigate their stability at different temperatures and curing rate at elevated temperatures revealing the stability of these OCERs.
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Affiliation(s)
- Taha Behroozi Kohlan
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Asu Ece Atespare
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Mehmet Yildiz
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Yusuf Ziya Menceloglu
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Serkan Unal
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Bekir Dizman
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
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4
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Yang L, Wang F, Ren P, Zhang T, Zhang Q. Poly(2-oxazoline)s: synthesis and biomedical applications. Macromol Res 2023. [DOI: 10.1007/s13233-023-00116-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Loose Semirigid Aromatic Polyester Bottle Brushes at Poly(2-isopropyl-2-oxazoline) Side Chains of Various Lengths: Behavior in Solutions and Thermoresponsiveness. Polymers (Basel) 2022; 14:polym14245354. [PMID: 36559721 PMCID: PMC9781464 DOI: 10.3390/polym14245354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/25/2022] [Accepted: 12/02/2022] [Indexed: 12/13/2022] Open
Abstract
A polycondensation aromatic polyester with an oxygen spacer was synthesized and used as a macroinitiator for the grafting of linear poly(2-isopropyl-2-oxazoline) (PiPrOx) by the cationic polymerization method. The length of the thermosensitive side chains was varied by the initiator:monomer ratio. Using methods of molecular hydrodynamics, light scattering and turbidimetry, the copolymers were studied in organic solvents and in water. The molecular characteristics of the main chain and graft copolymers, the polymerization degree of side chains and their grafting density have been determined. The equilibrium rigidity of the macroinitiator and the conformations of grafted macromolecules were evaluated. In selective solvents, they take on a star-like conformation or aggregate depending on the degree of shielding of the main chain by side chains. The thermoresponsiveness of graft copolymers in aqueous solutions was studied, and their LCST were estimated. The results are compared with data for graft copolymers composed of PiPrOx side chains and flexible or rigid chain backbones of aromatic polyester type.
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Kohlan TB, Atespare AE, Yildiz M, Menceloglu YZ, Unal S, Dizman B. Synthesis and Structure-Property Relationship of Amphiphilic Poly(2-ethyl- co-2-(alkyl/aryl)-2-oxazoline) Copolymers. ACS OMEGA 2022; 7:40067-40077. [PMID: 36385860 PMCID: PMC9648074 DOI: 10.1021/acsomega.2c04809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
Poly(2-oxazoline)s (POZs) are widely investigated for their applications in various fields due to their unique properties. To exploit and combine different characteristics of the POZ family, 2-oxazoline monomers can be copolymerized to prepare tailor-made copolymers with the desired glass transition temperature (T g), melting temperature (T m), amphiphilicity, and functionality. Here, we report the synthesis and characterization of 2-oxazoline monomers and a range of POZ copolymers produced, thereof. 2-Propyl-2-oxazoline (PrOZ) and 2-pentyl-2-oxazoline (PeOZ) monomers were synthesized by two different methods starting from nitriles or carboxylic acids. A number of POZ copolymers were synthesized by copolymerization of 2-ethyl-2-oxazoline (EOZ) with either one of PrOZ, PeOZ, or 2-phenyl-2-oxazoline (PhOZ) at three different compositions (25:75, 50:50, and 75:25) and three molecular weights (1000, 2000, and 5000 Da). The successful synthesis of the monomers and copolymers was demonstrated through their structural analysis by 1H NMR and FTIR. SEC results confirmed the targeted molar masses of the copolymers and living nature of the polymerization by showing low dispersity values. Thermal properties of the copolymers were studied using DSC and TGA. DSC studies revealed the amorph and random state of the copolymers with obtained T g values for the copolymers in the range of -3 to 84 °C depending on their molecular weight and type of the side chain. While the presence of longer aliphatic side chains resulted in lower T g values, the presence of 2-phenyl substituents on the polymer led to higher T g values. The decomposition temperatures determined by TGA were in the range of 328 to 383 °C depending on the molecular weight, composition, and side chain of the copolymers. It was observed that higher molecular weights led to higher T g values and decomposition temperatures. While copolymers with aliphatic side chains exhibited a single-step decomposition profile, the decomposition of copolymers having aromatic side chains occurred in multiple steps. The variations in the molecular weight, composition, and side chains of the copolymers resulted in a library of tailorable amphiphilic copolymers suitable for multiple applications ranging from biomedical applications to composite manufacturing.
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Affiliation(s)
- Taha Behroozi Kohlan
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Asu Ece Atespare
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Mehmet Yildiz
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Yusuf Ziya Menceloglu
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Serkan Unal
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Bekir Dizman
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
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8
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Polyoxazoline: A review article from polymerization to smart behaviors and biomedical applications. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111484] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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9
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Kirila TY, Razina AB, Ten’kovtsev AV, Filippov AP. Effect of the Structure of Arms and Way of Their Attachment to Calix[4]arene on Self-Assembly Processes in Aqueous Solutions of Thermoresponsive Star-Shaped Poly(2-alkyl-2-oxazolines) and Poly(2-alkyl-2-oxazines). POLYMER SCIENCE SERIES C 2022. [DOI: 10.1134/s1811238222700102] [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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10
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Wang WL, Kawai K, Sigemitsu H, Jin RH. Crystalline lamellar films with honeycomb structure from comb-like polymers of poly(2-long-alkyl-2-oxazoline)s. J Colloid Interface Sci 2022; 627:28-39. [PMID: 35841706 DOI: 10.1016/j.jcis.2022.07.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/01/2022] [Accepted: 07/06/2022] [Indexed: 11/29/2022]
Abstract
Comb-like copolymers are usually structured by grafting polymeric side chains onto main polymer chain. There are few reports of comb-on-comb polymers in which dense secondary side chains are grafted onto primary side chain. In this work, we synthesized comb polymers with grafted-on-graft side chains (c-PEI-g-Acyl) via an effective acylation reaction of comb polymers possessing polyethyleneimine (PEI) side chain with long-alkyl acyl chlorides. For comparison, we also synthesized homopolymers l-PEI-g-Acyls via reaction of linear PEI with long-alkyl acyl chlorides. Then, we investigated their crystalline feature in the film formation by XRD, DSC and SEM, and found that the polymers tend to form hexagonal lamella structures with bilayer alkyl spacing. The comb polymers c-PEI-g-Acyls and linear polymers l-PEI-g-Acyls were used in preparation of honeycomb film by the "breath-figure" process by dropping chloroform solution of the polymers on substrate. Different to many honeycomb polymeric films which are supported by amorphous phase, interestingly, our polymers easily afford honeycomb films which are supported by crystalline lamellae frames under higher humidity condition. It was found that the comb polymers of c-PEI-g-Acyls with longer PEI primary side chain and long alkyl secondary side chain have advantages in producing honeycomb film than linear polymers of l-PEI-g-Acys.
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Affiliation(s)
- Wen-Li Wang
- Department of Material and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Yokohama 221-8686, Japan
| | - Kousuke Kawai
- Department of Material and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Yokohama 221-8686, Japan
| | - Hiroaki Sigemitsu
- Department of Material and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Yokohama 221-8686, Japan
| | - Ren-Hua Jin
- Department of Material and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Yokohama 221-8686, Japan.
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11
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Yang M, Haider MS, Forster S, Hu C, Luxenhofer R. Synthesis and Investigation of Chiral Poly(2,4-disubstituted-2-oxazoline)-Based Triblock Copolymers, Their Self-Assembly, and Formulation with Chiral and Achiral Drugs. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mengshi Yang
- Functional Polymer Materials, Chair for Chemical Technology of Material Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Malik Salman Haider
- Functional Polymer Materials, Chair for Chemical Technology of Material Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Stefan Forster
- Functional Polymer Materials, Chair for Chemical Technology of Material Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Chen Hu
- Functional Polymer Materials, Chair for Chemical Technology of Material Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Robert Luxenhofer
- Functional Polymer Materials, Chair for Chemical Technology of Material Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
- Soft Matter Chemistry, Department of Chemistry and Helsinki Institute of Sustainability Science, Faculty of Science, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland
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12
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Jana S, Hoogenboom R. Poly(2‐oxazoline)s: A comprehensive overview of polymer structures and their physical properties – An update. POLYM INT 2022. [DOI: 10.1002/pi.6426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Somdeb Jana
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry Ghent University, Krijgslaan 281‐S4 9000 Ghent Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry Ghent University, Krijgslaan 281‐S4 9000 Ghent Belgium
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13
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Zhang Q, Liang Y, Li R, Huang Z, Kong L, Du P, Peng B. Sulfur(iv)-mediated umpolung α-heterofunctionalization of 2-oxazolines. Chem Sci 2022; 13:5164-5170. [PMID: 35655558 PMCID: PMC9093176 DOI: 10.1039/d2sc00476c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 04/08/2022] [Indexed: 11/21/2022] Open
Abstract
The α-umpolung of carbonyl compounds significantly expands the boundaries of traditional carbonyl chemistry. Despite various umpolung methods available today, reversing the inherent reactivity of carbonyls still remains a substantial challenge. In this article, we report the first use of sulfonium salts, in lieu of well-established hypervalent iodines, for the carbonyl umpolung event. The protocol enables the incorporation of a wide variety of heteroatom nucleophiles into the α-carbon of 2-oxazolines. The success of this investigation hinges on the following factors: (1) the use of sulfoxides, which are abundant, structurally diverse and tunable, and easily accessible, ensures the identification of a superior oxidant namely phenoxathiin sulfoxide for the umpolung reaction; (2) the "assembly/deprotonation" protocol previously developed for rearrangement reactions in our laboratory was successfully applied here for the construction of α-umpoled 2-oxazolines.
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Affiliation(s)
- Qifeng Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Yuchen Liang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Ruiqi Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Ziyi Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Peng Du
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
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14
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Sahin ZM, Kohlan TB, Atespare AE, Yildiz M, Unal S, Dizman B. Polyoxazoline‐modified
graphene oxides with improved water and epoxy resin dispersibility and stability towards composite applications. J Appl Polym Sci 2022. [DOI: 10.1002/app.52406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zeynep Munteha Sahin
- Sabanci University Integrated Manufacturing Technologies Center of Excellence Sabanci University Istanbul Turkey
- Composite Technologies Center of Excellence, Istanbul Technology Development Zone Sabanci University‐Kordsa Istanbul Turkey
| | - Taha Behroozi Kohlan
- Sabanci University Integrated Manufacturing Technologies Center of Excellence Sabanci University Istanbul Turkey
- Composite Technologies Center of Excellence, Istanbul Technology Development Zone Sabanci University‐Kordsa Istanbul Turkey
- Faculty of Engineering and Natural Sciences Sabanci University Istanbul Turkey
| | - Asu Ece Atespare
- Sabanci University Integrated Manufacturing Technologies Center of Excellence Sabanci University Istanbul Turkey
- Composite Technologies Center of Excellence, Istanbul Technology Development Zone Sabanci University‐Kordsa Istanbul Turkey
- Faculty of Engineering and Natural Sciences Sabanci University Istanbul Turkey
| | - Mehmet Yildiz
- Sabanci University Integrated Manufacturing Technologies Center of Excellence Sabanci University Istanbul Turkey
- Composite Technologies Center of Excellence, Istanbul Technology Development Zone Sabanci University‐Kordsa Istanbul Turkey
- Faculty of Engineering and Natural Sciences Sabanci University Istanbul Turkey
| | - Serkan Unal
- Sabanci University Integrated Manufacturing Technologies Center of Excellence Sabanci University Istanbul Turkey
- Composite Technologies Center of Excellence, Istanbul Technology Development Zone Sabanci University‐Kordsa Istanbul Turkey
- Faculty of Engineering and Natural Sciences Sabanci University Istanbul Turkey
| | - Bekir Dizman
- Sabanci University Integrated Manufacturing Technologies Center of Excellence Sabanci University Istanbul Turkey
- Composite Technologies Center of Excellence, Istanbul Technology Development Zone Sabanci University‐Kordsa Istanbul Turkey
- Faculty of Engineering and Natural Sciences Sabanci University Istanbul Turkey
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15
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Mazrad ZAI, Lai M, Davis TP, Nicolazzo JA, Thurecht KJ, Leiske MN, Kempe K. Protected amine-functional initiators for the synthesis of α-amine homo- and heterotelechelic poly(2-ethyl-2-oxazoline)s. Polym Chem 2022. [DOI: 10.1039/d2py00649a] [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
Screening a series of protected amine cationic ring-opening polymerization initiators revealed the commercially available N-(3-bromopropyl)phthalimide as the most suitable to achieve defined polymers with high degree of amine functionalization.
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Affiliation(s)
- Zihnil A. I. Mazrad
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - May Lai
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Thomas P. Davis
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Australia
| | - Joseph A. Nicolazzo
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Kristofer J. Thurecht
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Australia
- Centre for Advanced Imaging, The University of Queensland, Australia
| | - Meike N. Leiske
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Kristian Kempe
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
- Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia
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16
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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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17
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Mazrad ZAI, Schelle B, Nicolazzo JA, Leiske MN, Kempe K. Nitrile-Functionalized Poly(2-oxazoline)s as a Versatile Platform for the Development of Polymer Therapeutics. Biomacromolecules 2021; 22:4618-4632. [PMID: 34647734 DOI: 10.1021/acs.biomac.1c00923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In recent years, polymers bearing reactive groups have received significant interest for biomedical applications. Numerous functional polymer platforms have been introduced, which allow for the preparation of materials with tailored properties via post-polymerization modifications. However, because of their reactivity, many functional groups are not compatible with the initial polymerization. The nitrile group is a highly interesting and relatively inert functionality that has mainly received attention in radical polymerizations. In this Article, a nitrile-functionalized 2-oxazoline monomer (2-(4-nitrile-butyl)-2-oxazoline, BuNiOx) is introduced, and its compatibility with the cationic ring-opening polymerization is demonstrated. Subsequently, the versatility of nitrile-functionalized poly(2-oxazoline)s (POx) is presented. To this end, diverse (co)polymers are synthesized and characterized by nuclear resonance spectroscopy, size-exclusion chromatography, and mass spectrometry. Amphiphilic block copolymers are shown to efficiently encapsulate the hydrophobic drug curcumin (CUR) in aqueous solution, and the anti-inflammatory effect of the CUR-containing nanostructures is presented in BV-2 microglia. Furthermore, the availability of the BuNiOx repeating units for post-polymerization modifications with hydroxylamine to yield amidoxime (AO)-functionalized POx is demonstrated. These AO-containing POx were successfully applied for the complexation of Fe(III) in a quantitative manner. In addition, AO-functionalized POx were shown to release nitric oxide intracellularly in BV-2 microglia. Thus nitrile-functionalized POx represent a promising and robust platform for the design of polymer therapeutics for a wide range of applications.
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Affiliation(s)
- Zihnil A I Mazrad
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Baptiste Schelle
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Joseph A Nicolazzo
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Meike N Leiske
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Kristian Kempe
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia.,Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia
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18
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Huntošová V, Datta S, Lenkavská L, Máčajová M, Bilčík B, Kundeková B, Čavarga I, Kronek J, Jutková A, Miškovský P, Jancura D. Alkyl Chain Length in Poly(2-oxazoline)-Based Amphiphilic Gradient Copolymers Regulates the Delivery of Hydrophobic Molecules: A Case of the Biodistribution and the Photodynamic Activity of the Photosensitizer Hypericin. Biomacromolecules 2021; 22:4199-4216. [PMID: 34494830 DOI: 10.1021/acs.biomac.1c00768] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Self-assembled nanostructures of amphiphilic gradient copoly(2-oxazoline)s have recently attracted attention as promising delivery systems for the effective delivery of hydrophobic anticancer drugs. In this study, we have investigated the effects of increasing hydrophobic side chain length on the self-assembly of gradient copolymers composed of 2-ethyl-2-oxazoline as the hydrophilic comonomer and various 2-(4-alkyloxyphenyl)-2-oxazolines as hydrophobic comonomers. We show that the size of the formed polymeric nanoparticles depends on the structure of the copolymers. Moreover, the stability and properties of the polymeric assembly can be affected by the loading of hypericin, a promising compound for photodiagnostics and photodynamic therapy (PDT). We have found the limitation that allows rapid or late release of hypericin from polymeric nanoparticles. The nanoparticles entering the cells by endocytosis decreased the hypericin-induced PDT, and the contribution of the passive process (diffusion) increased the probability of a stronger photoeffect. A study of fluorescence pharmacokinetics and biodistribution revealed differences in the release of hypericin from nanoparticles toward the quail chorioallantoic membrane, a preclinical model for in vivo studies, depending on the composition of polymeric nanoparticles. Photodamage induced by PDT in vivo well correlated with the in vitro results. All formulations studied succeeded in targeting hypericin at cancer cells. In conclusion, we demonstrated the promising potential of poly(2-oxazoline)-based gradient copolymers for effective drug delivery and sequential drug release needed for successful photodiagnostics and PDT in cancer therapy.
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Affiliation(s)
- Veronika Huntošová
- Center for Interdisciplinary Biosciences, Technology and Innovation Park, P.J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia
| | - Shubhashis Datta
- Center for Interdisciplinary Biosciences, Technology and Innovation Park, P.J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia
| | - Lenka Lenkavská
- Department of Biophysics, Faculty of Science, P.J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia
| | - Mariana Máčajová
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dubravska cesta 9, 840 05 Bratislava, Slovakia
| | - Boris Bilčík
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dubravska cesta 9, 840 05 Bratislava, Slovakia
| | - Barbora Kundeková
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dubravska cesta 9, 840 05 Bratislava, Slovakia
| | - Ivan Čavarga
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dubravska cesta 9, 840 05 Bratislava, Slovakia
| | - Juraj Kronek
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dubravska cesta 9, 845 41 Bratislava, Slovakia
| | - Annamária Jutková
- Department of Biophysics, Faculty of Science, P.J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia
| | - Pavol Miškovský
- Center for Interdisciplinary Biosciences, Technology and Innovation Park, P.J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia.,SAFTRA Photonics sro., Moldavska cesta 51, 04011 Kosice, Slovakia
| | - Daniel Jancura
- Department of Biophysics, Faculty of Science, P.J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia
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19
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Baroudi A, Karton A. Mechanistic insights into the autocatalyzed rearrangement of 2‐bromooxazolines to 2‐bromoisocyanates by means of high‐level quantum chemical methods. J PHYS ORG CHEM 2021. [DOI: 10.1002/poc.4214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Abdulkader Baroudi
- College of Engineering and Technology American University of the Middle East Kuwait
| | - Amir Karton
- School of Molecular Sciences The University of Western Australia Perth Western Australia Australia
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20
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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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21
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Brunzel M, Dirauf M, Sahn M, Czaplewska JA, Fritz N, Weber C, Nischang I, Schubert US. On the identification and quantification of proton-initiated species in the synthesis of poly(2-alkyl-2-oxazoline)s by high resolution liquid chromatography. J Chromatogr A 2021; 1653:462364. [PMID: 34280792 DOI: 10.1016/j.chroma.2021.462364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/17/2021] [Accepted: 06/19/2021] [Indexed: 12/01/2022]
Abstract
Hydrophilic poly(2-oxazoline)s represent a promising alternative to replace poly(ethylene glycol) in the biomedical field. For that purpose, reliable analytical protocols to confirm identity and quantity of impurities are required. In particular, side products deriving from chain transfer reactions occurring during the cationic ring-opening polymerization and incomplete end-capping processes may be present. The analytical approach must hence be capable of separating polymers according to minor changes regarding their end group. We demonstrate that liquid chromatography, relying on a monolithic C18-modified silica column and isocratic as well as gradient elution using water / acetonitrile mixtures and varying detectors, can accomplish such demanding high resolution separations. Poly(2-ethyl-2-oxazoline)s (PEtOx) with acetyl, hydroxyl, and phthalimide ω-end groups were investigated. Identification of side products was achieved through coupling with electrospray ionization mass spectrometry. UV / Vis detection was applied to quantify chain transfer products in PEtOx comprising biphenyl moieties. In addition, gradient elution enabled the separation of PEtOx into macromolecules according to their specific degrees of polymerization in molar mass ranges around 2,000 g mol-1.
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Affiliation(s)
- Michaela Brunzel
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Michael Dirauf
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Martin Sahn
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Justyna A Czaplewska
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Nicole Fritz
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Christine Weber
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Ivo Nischang
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany.
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany.
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22
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Self-Organization in Dilute Aqueous Solutions of Thermoresponsive Star-Shaped Six-Arm Poly-2-Alkyl-2-Oxazines and Poly-2-Alkyl-2-Oxazolines. Polymers (Basel) 2021; 13:polym13091429. [PMID: 33946655 PMCID: PMC8125547 DOI: 10.3390/polym13091429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/16/2021] [Accepted: 04/26/2021] [Indexed: 11/24/2022] Open
Abstract
The behavior of star-shaped six-arm poly-2-alkyl-2-oxazines and poly-2-alkyl-2-oxazolines in aqueous solutions on heating was studied by light scattering, turbidimetry and microcalorimetry. The core of stars was hexaaza [26] orthoparacyclophane and the arms were poly-2-ethyl-2-oxazine, poly-2-isopropyl-2-oxazine, poly-2-ethyl-2-oxazoline, and poly-2-isopropyl-2-oxazoline. The arm structure affects the properties of polymers already at low temperatures. Molecules and aggregates were present in solutions of poly-2-alkyl-2-oxazines, while aggregates of two types were observed in the case of poly-2-alkyl-2-oxazolines. On heating below the phase separation temperature, the characteristics of the investigated solutions did not depend practically on temperature. An increase in the dehydration degree of poly-2-alkyl-2-oxazines and poly-2-alkyl-2-oxazolines led to the formation of intermolecular hydrogen bonds, and aggregation was the dominant process near the phase separation temperature. It was shown that the characteristics of the phase transition in solutions of the studied polymer stars are determined primarily by the arm structure, while the influence of the molar mass is not so significant. In comparison with literature data, the role of the hydrophobic core structure in the formation of the properties of star-shaped polymers was analyzed.
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23
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Majerčíková M, Nádaždy P, Chorvát D, Satrapinskyy L, Valentová H, Kroneková Z, Šiffalovič P, Kronek J, Zahoranová A. Effect of Dexamethasone on Thermoresponsive Behavior of Poly(2-Oxazoline) Diblock Copolymers. Polymers (Basel) 2021; 13:polym13091357. [PMID: 33919321 PMCID: PMC8122420 DOI: 10.3390/polym13091357] [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: 03/30/2021] [Revised: 04/13/2021] [Accepted: 04/17/2021] [Indexed: 01/22/2023] Open
Abstract
Thermoresponsive polymers play an important role in designing drug delivery systems for biomedical applications. In this contribution, the effect of encapsulated hydrophobic drug dexamethasone on thermoresponsive behavior of diblock copolymers was studied. A small series of diblock copoly(2-oxazoline)s was prepared by combining thermoresponsive 2-n-propyl-2-oxazoline (nPrOx) and hydrophilic 2-methyl-2-oxazoline (MeOx) in two ratios and two polymer chain lengths. The addition of dexamethasone affected the thermoresponsive behavior of one of the copolymers, nPrOx20-MeOx180, in the aqueous medium by shifting the cloud point temperature to lower values. In addition, the formation of microparticles containing dexamethasone was observed during the heating of the samples. The morphology and number of microparticles were affected by the structure and concentration of copolymer, the drug concentration, and the temperature. The crystalline nature of formed microparticles was confirmed by polarized light microscopy, confocal Raman microscopy, and wide-angle X-ray scattering. The results demonstrate the importance of studying drug/polymer interactions for the future development of thermoresponsive drug carriers.
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Affiliation(s)
- Monika Majerčíková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (M.M.); (Z.K.)
| | - Peter Nádaždy
- Institute of Physics of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovakia; (P.N.); (P.Š.)
| | - Dušan Chorvát
- International Laser Centre, Department of Biophotonics, Ilkovičova 3, 841 04 Bratislava, Slovakia;
| | - Leonid Satrapinskyy
- Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská Dolina, 842 48 Bratislava, Slovakia;
| | - Helena Valentová
- Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prague 2, Czech Republic;
| | - Zuzana Kroneková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (M.M.); (Z.K.)
| | - Peter Šiffalovič
- Institute of Physics of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovakia; (P.N.); (P.Š.)
- Centre for Advanced Materials Application, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovakia
| | - Juraj Kronek
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (M.M.); (Z.K.)
- Correspondence: (J.K.); (A.Z.)
| | - Anna Zahoranová
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163MC, A-1060 Vienna, Austria
- Correspondence: (J.K.); (A.Z.)
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24
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Kirila T, Smirnova A, Razina A, Tenkovtsev A, Filippov A. Influence of Salt on the Self-Organization in Solutions of Star-Shaped Poly-2-alkyl-2-oxazoline and Poly-2-alkyl-2-oxazine on Heating. Polymers (Basel) 2021; 13:1152. [PMID: 33916516 PMCID: PMC8038499 DOI: 10.3390/polym13071152] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/30/2021] [Accepted: 04/01/2021] [Indexed: 11/24/2022] Open
Abstract
The water-salt solutions of star-shaped six-arm poly-2-alkyl-2-oxazines and poly-2-alkyl-2-oxazolines were studied by light scattering and turbidimetry. The core was hexaaza[26]orthoparacyclophane and the arms were poly-2-ethyl-2-oxazine, poly-2-isopropyl-2-oxazine, poly-2-ethyl-2-oxazoline, and poly-2-isopropyl-2-oxazoline. NaCl and N-methylpyridinium p-toluenesulfonate were used as salts. Their concentration varied from 0-0.154 M. On heating, a phase transition was observed in all studied solutions. It was found that the effect of salt on the thermosensitivity of the investigated stars depends on the structure of the salt and polymer and on the salt content in the solution. The phase separation temperature decreased with an increase in the hydrophobicity of the polymers, which is caused by both a growth of the side radical size and an elongation of the monomer unit. For NaCl solutions, the phase separation temperature monotonically decreased with growth of salt concentration. In solutions with methylpyridinium p-toluenesulfonate, the dependence of the phase separation temperature on the salt concentration was non-monotonic with minimum at salt concentration corresponding to one salt molecule per one arm of a polymer star. Poly-2-alkyl-2-oxazine and poly-2-alkyl-2-oxazoline stars with a hexaaza[26]orthoparacyclophane core are more sensitive to the presence of salt in solution than the similar stars with a calix[n]arene branching center.
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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.S.); (A.R.); (A.T.); (A.F.)
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25
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Abbrent S, Mahun A, Smrčková MD, Kobera L, Konefał R, Černoch P, Dušek K, Brus J. Copolymer chain formation of 2-oxazolines by in situ 1H-NMR spectroscopy: dependence of sequential composition on substituent structure and monomer ratios. RSC Adv 2021; 11:10468-10478. [PMID: 35423552 PMCID: PMC8695665 DOI: 10.1039/d1ra01509e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 03/03/2021] [Indexed: 11/21/2022] Open
Abstract
In situ 1H NMR characterization of copolymerization reactions of various 2-oxazoline monomers at different molar ratios offers detailed insight into the build-up and composition of the polymer chains. Various 2-oxazolines were copolymerized in one single solvent, butyronitrile, with 2-dec-9'-enyl-2-oxazoline, where the double bond allows for post-polymerization modification and can function as a crosslinking unit to form polymer networks. The types of the monomers and their molar ratios in the feed have a strong effect on the microstructure of the forming copolymer chains. Copolymers comprising 2-dec-9'-enyl-2-oxazoline and either 2-ethyl-, 2-isopropyl-, 2-butyl-, 2-heptyl, 2-nonyl- or 2-phenyl-2-oxazoline, show significant differences in sequential structure of copolymers ranging from block to gradient and random ordering of the monomer units. 1H NMR was found to be a powerful tool to uncover detailed oxazoline copolymerization kinetics and evolution of chain composition.
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Affiliation(s)
- Sabina Abbrent
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
| | - Andrii Mahun
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University Hlavova 8 128 40 Prague 2 Czech Republic
| | - Miroslava Dušková Smrčková
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
| | - Libor Kobera
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
| | - Peter Černoch
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
| | - Karel Dušek
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
| | - Jiří Brus
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
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26
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Roma E, Corsi P, Willinger M, Leitner NS, Zirbs R, Reimhult E, Capone B, Gasperi T. Theoretical and Experimental Design of Heavy Metal-Mopping Magnetic Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2021; 13:1386-1397. [PMID: 33389993 PMCID: PMC8021223 DOI: 10.1021/acsami.0c17759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 12/18/2020] [Indexed: 06/12/2023]
Abstract
Herein, we show a comprehensive experimental, theoretical, and computational study aimed at designing macromolecules able to adsorb a cargo at the nanoscale. Specifically, we focus on the adsorption properties of star diblock copolymers, i.e., macromolecules made by a number f of H-T diblock copolymer arms tethered on a central core; the H monomeric heads, which are closer to the tethering point, are attractive toward a specific target, while the T monomeric tails are neutral to the cargo. Experimentally, we exploited the adaptability of poly(2-oxazoline)s (POxs) to realize block copolymer-coated nanoparticles with a proper functionalization able to interact with heavy metals and show or exhibit a thermoresponsive behavior in aqueous solution. We here present the synthesis and analysis of the properties of a high molecular mass block copolymer featured by (i) a polar side chain, capable of exploiting electrostatic and hydrophilic interaction with a predetermined cargo, and (ii) a thermoresponsive scaffold, able to change the interaction with the media by tuning the temperature. Afterward, the obtained polymers were grafted onto iron oxide nanoparticles and the thermoresponsive properties were investigated. Through isothermal titration calorimetry, we then analyzed the adsorption properties of the synthesized superparamagnetic nanoparticles for heavy metal ions in aqueous solution. Additionally, we use a combination of scaling theories and simulations to link equilibrium properties of the system to a prediction of the loading properties as a function of size ratio and effective interactions between the considered species. The comparison between experimental results on adsorption and theoretical prediction validates the whole design process.
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Affiliation(s)
- Elia Roma
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Pietro Corsi
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Max Willinger
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Nikolaus Simon Leitner
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Ronald Zirbs
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Erik Reimhult
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Barbara Capone
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Tecla Gasperi
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
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27
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Park JR, Bolle ECL, Santos Cavalcanti AD, Podevyn A, Van Guyse JFR, Forget A, Hoogenboom R, Dargaville TR. Injectable biocompatible poly(2-oxazoline) hydrogels by strain promoted alkyne-azide cycloaddition. Biointerphases 2021; 16:011001. [PMID: 33401918 DOI: 10.1116/6.0000630] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Poly(2-alkyl-2-oxazoline) (PAOx) hydrogels are tailorable synthetic materials with demonstrated biomedical applications, thanks to their excellent biocompatibility and tunable properties. However, their use as injectable hydrogels is challenging as it requires invasive surgical procedures to insert the formed hydrogel into the body due to their nonsoluble 3D network structures. Herein, we introduce cyclooctyne and azide functional side chains to poly(2-oxazoline) copolymers to induce in situ gelation using strain promoted alkyne-azide cycloaddition. The gelation occurs rapidly, within 5 min, under physiological conditions when two polymer solutions are simply mixed. The influence of several parameters, such as temperature and different aqueous solutions, and stoichiometric ratios between the two polymers on the structural properties of the resultant hydrogels have been investigated. The gel formation within tissue samples was verified by subcutaneous injection of the polymer solution into an ex vivo model. The degradation study of the hydrogels in vitro showed that the degradation rate was highly dependent on the type of media, ranging from days to a month. This result opens up the potential uses of PAOx hydrogels in attempts to achieve optimal, injectable drug delivery systems and tissue engineering.
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Affiliation(s)
- Jong-Ryul Park
- Institute of Health and Biomedical Innovation, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Eleonore C L Bolle
- Institute of Health and Biomedical Innovation, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Amanda Dos Santos Cavalcanti
- Institute of Health and Biomedical Innovation, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Annelore Podevyn
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
| | - Joachim F R Van Guyse
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
| | - Aurelien Forget
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-St. 31, Freiburg, 79104, Germany
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
| | - Tim R Dargaville
- Institute of Health and Biomedical Innovation, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4001, Australia
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Quasiliving cationic ring-opening polymerization of 2-ethyl-2-oxazoline in benzotrifluoride, as an alternative reaction medium. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123165] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Windberger MS, Dimitriou E, Rendl S, Wewerka K, Wiesbrock F. Temperature-Triggered/Switchable Thermal Conductivity of Epoxy Resins. Polymers (Basel) 2020; 13:polym13010065. [PMID: 33375238 PMCID: PMC7796255 DOI: 10.3390/polym13010065] [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: 11/27/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 11/17/2022] Open
Abstract
The pronouncedly low thermal conductivity of polymers in the range of 0.1–0.2 W m−1 K−1 is a limiting factor for their application as an insulating layer in microelectronics that exhibit continuously higher power-to-volume ratios. Two strategies can be applied to increase the thermal conductivity of polymers; that is, compounding with thermally conductive inorganic materials as well as blending with aromatic units arranged by the principle of π-π stacking. In this study, both strategies were investigated and compared on the example of epoxy-amine resins of bisphenol A diglycidyl ether (BADGE) and 1,2,7,8-diepoxyoctane (DEO), respectively. These two diepoxy compounds were cured with mixtures of the diamines isophorone diamine (IPDA) and o-dianisidine (DAN). The epoxy-amine resins were cured without filler and with 5 wt.-% of SiO2 nanoparticles. Enhanced thermal conductivity in the range of 0.4 W·m−1·K−1 was observed exclusively in DEO-based polymer networks that were cured with DAN (and do not contain SiO2 fillers). This observation is argued to originate from π-π stacking of the aromatic units of DAN enabled by the higher flexibility of the aliphatic carbon chain of DEO compared with that of BADGE. The enhanced thermal conductivity occurs only at temperatures above the glass-transition point and only if no inorganic fillers, which disrupt the π-π stacking of the aromatic groups, are present. In summary, it can be argued that the bisphenol-free epoxy-amine resin with an epoxy compound derivable from natural resources shows favorably higher thermal conductivity in comparison with the petrol-based bisphenol-based epoxy/amine resins.
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Affiliation(s)
- Matthias Sebastian Windberger
- Polymer Competence Center Leoben GmbH, Roseggerstrasse 12, 8700 Leoben, Austria; (M.S.W.); (E.D.); (S.R.)
- Institute for Chemistry and Technology of Materials, Graz University of Technology, NAWI Graz, Stremayrgasse 9, 8010 Graz, Austria
| | - Evgenia Dimitriou
- Polymer Competence Center Leoben GmbH, Roseggerstrasse 12, 8700 Leoben, Austria; (M.S.W.); (E.D.); (S.R.)
| | - Sarah Rendl
- Polymer Competence Center Leoben GmbH, Roseggerstrasse 12, 8700 Leoben, Austria; (M.S.W.); (E.D.); (S.R.)
| | - Karin Wewerka
- Institute for Electron Microscopy and Nanoanalysis and Center for Electron Microscopy, Graz University of Technology, NAWI Graz, Steyrergasse 17, 8010 Graz, Austria;
| | - Frank Wiesbrock
- Polymer Competence Center Leoben GmbH, Roseggerstrasse 12, 8700 Leoben, Austria; (M.S.W.); (E.D.); (S.R.)
- Correspondence: ; Tel.: +43-3842-42962-42
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30
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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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31
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Tarabukina E, Fatullaev E, Krasova A, Kurlykin M, Tenkovtsev A, Sheiko SS, Filippov A. Synthesis, Structure, Hydrodynamics and Thermoresponsiveness of Graft Copolymer with Aromatic Polyester Backbone at Poly(2-isopropyl-2-oxazoline) Side Chains. Polymers (Basel) 2020; 12:polym12112643. [PMID: 33182803 PMCID: PMC7698206 DOI: 10.3390/polym12112643] [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: 10/14/2020] [Revised: 11/04/2020] [Accepted: 11/08/2020] [Indexed: 02/06/2023] Open
Abstract
New thermoresponsive graft copolymers with an aromatic polyester backbone and poly(2-isopropyl-2-oxazoline) (PiPrOx) side chains are synthesized and characterized by NMR and GPC. The grafting density of side chains is 0.49. The molar masses of the graft-copolymer, its backbone, side chains, and the modeling poly-2-isopropyl-2-oxaziline are 74,000, 19,000, 4300, and 16,600 g·mol−1, respectively. Their conformational properties in nitropropane as well as thermoresponsiveness in aqueous solutions are studied and compared with that of free side chains, i.e., linear PiPrOx with a hydrophobic terminal group. In nitropropane, the graft-copolymer adopts conformation of a 13-arm star with a core of a collapsed main chain and a PiPrOx corona. Similarly, a linear PiPrOx chain protects its bulky terminal group by wrapping around it in a selective solvent. In aqueous solutions at low temperatures, graft copolymers form aggregates due to interaction of hydrophobic backbones, which contrasts to molecular solutions of the model linear PiPrOx. The lower critical solution temperature (LCST) for the graft copolymer is around 20 °C. The phase separation temperatures of the copolymer solution were lower than that of the linear chain counterpart, decreasing with concentration for both polymers.
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Affiliation(s)
- Elena Tarabukina
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint-Petersburg, Russia; (A.K.); (M.K.); (A.T.); (S.S.S.); (A.F.)
- Correspondence:
| | - Emil Fatullaev
- School of Photonics, St. Petersburg National Research University of Information Technologies, Mechanics and Optics, 199004 Saint-Petersburg, Russia;
| | - Anna Krasova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint-Petersburg, Russia; (A.K.); (M.K.); (A.T.); (S.S.S.); (A.F.)
| | - Mikhail Kurlykin
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint-Petersburg, Russia; (A.K.); (M.K.); (A.T.); (S.S.S.); (A.F.)
| | - Andrey Tenkovtsev
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint-Petersburg, Russia; (A.K.); (M.K.); (A.T.); (S.S.S.); (A.F.)
| | - Sergei S. Sheiko
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint-Petersburg, Russia; (A.K.); (M.K.); (A.T.); (S.S.S.); (A.F.)
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599-3290, USA
| | - Alexander Filippov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint-Petersburg, Russia; (A.K.); (M.K.); (A.T.); (S.S.S.); (A.F.)
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32
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Bernhard Y, Sedlacek O, Van Guyse JFR, Bender J, Zhong Z, De Geest BG, Hoogenboom R. Poly(2-ethyl-2-oxazoline) Conjugates with Salicylic Acid via Degradable Modular Ester Linkages. Biomacromolecules 2020; 21:3207-3215. [PMID: 32639725 DOI: 10.1021/acs.biomac.0c00659] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Conjugation of drugs to polymers is a widely used approach to gain control over the release of therapeutics. In this contribution, salicylic acid, a multipurpose model drug, is conjugated to the biocompatible poly(2-ethyl-2-oxazoline) (PEtOx). The drug is attached to the side chains of a polymer carrier through a hydrolytically cleavable ester linker, via a sequential postpolymerization modification. The chemical modulation of this ester, i.e., by primary or secondary alcohols, is demonstrated to greatly influence the ester hydrolysis rate. This crucial parameter allows us to tune the in vitro kinetics of the sustained drug release for periods exceeding a month in phosphate-buffered saline (PBS). The synthetic accessibility of the cleavable linker, together with the modularity of the drug release rate offered by this approach, highlights the utility of this class of polymers in the field of long-lasting drug delivery systems for persistent and chronic disease treatment.
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Affiliation(s)
- Yann Bernhard
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| | - Ondrej Sedlacek
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| | - Joachim F R Van Guyse
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| | - Johan Bender
- Bender Analytical Holding BV, Oude Holleweg 6, 6572 AB Berg en Dal, The Netherlands
| | - Zifu Zhong
- Department of Pharmaceutics, Ghent University, B-9000 Ghent, Belgium
| | - Bruno G De Geest
- Department of Pharmaceutics, Ghent University, B-9000 Ghent, Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
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33
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Kirila TU, Kurlykin MP, Tenkovtsev AV, Filippov AP. Synthesis of thermo- and pH-sensitive star-shaped poly(2-alkyl-2-oxazoline) and its properties in aqueous its properties in aqueous solutions with varying medium acidity. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2020. [DOI: 10.1080/1023666x.2020.1788287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tatyana U. Kirila
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Saint Petersburg, Russia
| | - Mikhail P. Kurlykin
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Saint Petersburg, Russia
| | - Andrey V. Tenkovtsev
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Saint Petersburg, Russia
| | - Alexander P. Filippov
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Saint Petersburg, Russia
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34
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Jana S, Uchman M. Poly(2-oxazoline)-based stimulus-responsive (Co)polymers: An overview of their design, solution properties, surface-chemistries and applications. Prog Polym Sci 2020. [DOI: 10.1016/j.progpolymsci.2020.101252] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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35
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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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36
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Self-organization in aqueous solutions of thermosensitive star-shaped and linear gradient copolymers of 2-ethyl-2-oxazoline and 2-isopropyl-2-oxazoline. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04638-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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37
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Cvek M, Zahoranova A, Mrlik M, Sramkova P, Minarik A, Sedlacik M. Poly(2-oxazoline)-based magnetic hydrogels: Synthesis, performance and cytotoxicity. Colloids Surf B Biointerfaces 2020; 190:110912. [PMID: 32172162 DOI: 10.1016/j.colsurfb.2020.110912] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 01/30/2020] [Accepted: 02/27/2020] [Indexed: 01/15/2023]
Abstract
Research on the subject of smart biomaterials has become a cornerstone of tissue engineering and regenerative medicine. Herein, the authors report on developing magnetic hydrogels that combine high biocompatibility and remarkable activity in magnetic fields. We fabricated magnetic hydrogels based on poly(2-ethyl-2-oxazoline) (POx) via living ring-opening cationic polymerization with in-situ embedding of the carbonyl iron (CI) particles. Investigation was made as to the effect exerted by the concentration of CI on magnetic, viscoelastic/magnetorheological properties, the degree of equilibrium swelling, and cytotoxicity. The hydrogels exhibited an open pore structure, as evidenced by computed tomography (CT) imaging. Susceptibility measurements revealed the concentration-dependent field-induced particle restructuration indicating elongation/contraction of the material, thereby determining the potential for magneto-mechanical stimulation of the cells. The POx-based magnetic hydrogels were amphiphilic in character, showing decrease in their capability to hold liquid alongside increase in CI concentration. Viscoelastic measurements suggested that interaction occurred between the particles and matrix based on inconsistency between the experimental storage modulus and the Krieger-Dougherty model. The synthesized materials exhibited excellent biocompatibility toward the 3T3 fibroblast cell line in tests of extract toxicity and direct contact cytotoxicity (ISO standards). The unique combination of properties exhibited by the material - magneto-mechanical activity and biocompatibility - could prove favorable in fields such as biomedicine and biomechanics.
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Affiliation(s)
- Martin Cvek
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 760 01 Zlín, Czech Republic.
| | - Anna Zahoranova
- Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 845 41 Bratislava, Slovakia.
| | - Miroslav Mrlik
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 760 01 Zlín, Czech Republic
| | - Petra Sramkova
- Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 845 41 Bratislava, Slovakia
| | - Antonin Minarik
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 760 01 Zlín, Czech Republic; Department of Physics and Materials Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 760 01 Zlín, Czech Republic
| | - Michal Sedlacik
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 760 01 Zlín, Czech Republic; Department of Production Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 760 01 Zlín, Czech Republic
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38
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Oleszko-Torbus N, Utrata-Wesołek A, Bochenek M, Lipowska-Kur D, Dworak A, Wałach W. Thermal and crystalline properties of poly(2-oxazoline)s. Polym Chem 2020. [DOI: 10.1039/c9py01316d] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The review gathers together data concerning the influence of poly(2-substituted-2-oxazoline)s structure on their thermal and crystalline properties, and how this relationship can be adjusted in controlled manner.
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Affiliation(s)
| | | | - Marcelina Bochenek
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- 41-819 Zabrze
- Poland
| | - Daria Lipowska-Kur
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- 41-819 Zabrze
- Poland
| | - Andrzej Dworak
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- 41-819 Zabrze
- Poland
| | - Wojciech Wałach
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- 41-819 Zabrze
- Poland
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39
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Ying WB, Bae K, Ko NY, Kim SH, Ryu SG, Zhu J, Zhang R, Lee B, Lee KJ. Synthesis of poly[2-(3-butenyl)-2-oxazoline] with abundant carboxylic acid functional groups as a fiber-based sol–gel reaction supporter for catalytic applications. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.07.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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40
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41
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Kirila T, Smirnova A, Filippov A, Razina A, Tenkovtsev A, Filippov A. Thermosensitive star-shaped poly-2-ethyl-2-oxazine. Synthesis, structure characterization, conformation, and self-organization in aqueous solutions. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109215] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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42
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Boel E, Smeets A, Vergaelen M, De la Rosa VR, Hoogenboom R, Van den Mooter G. Comparative study of the potential of poly(2-ethyl-2-oxazoline) as carrier in the formulation of amorphous solid dispersions of poorly soluble drugs. Eur J Pharm Biopharm 2019; 144:79-90. [DOI: 10.1016/j.ejpb.2019.09.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/08/2019] [Accepted: 09/06/2019] [Indexed: 01/26/2023]
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43
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Van Guyse JFR, Cools P, Egghe T, Asadian M, Vergaelen M, Rigole P, Yan W, Benetti EM, Jerca VV, Declercq H, Coenye T, Morent R, Hoogenboom R, De Geyter N. Influence of the Aliphatic Side Chain on the Near Atmospheric Pressure Plasma Polymerization of 2-Alkyl-2-oxazolines for Biomedical Applications. ACS APPLIED MATERIALS & INTERFACES 2019; 11:31356-31366. [PMID: 31381296 DOI: 10.1021/acsami.9b09999] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Plasma polymerization is gaining popularity as a technique for coating surfaces due to the low cost, ease of operation, and substrate-independent nature. Recently, the plasma polymerization (or deposition) of 2-oxazoline monomers was reported resulting in coatings that have potential applications in regenerative medicine. Despite the structural versatility of 2-oxazolines, only a few monomers have been subjected to plasma polymerization. Within this study, however, we explore the near atmospheric pressure plasma polymerization of a range of 2-oxazoline monomers, focusing on the influence of the aliphatic side-chain length (methyl to butyl) on the plasma polymerization process conditions as well as the properties of the obtained coatings. While side-chain length had only a minor influence on the chemical composition, clear effects on the plasma polymerization conditions were observed, thus gaining valuable insights in the plasma polymerization process as a function of monomer structure. Additionally, cytocompatibility and cell attachment on the coatings obtained by 2-oxazoline plasma polymerization was assessed. The coatings displayed strong cell interactive properties, whereby cytocompatibility increased with increasing aliphatic side-chain length of the monomer, reaching up to 93% cell viability after 1 day of cell culture compared to tissue culture plates. As this is in stark contrast to the antifouling behavior of the parent polymers, we compared the properties and composition of the plasma-polymerized coatings to the parent polymers revealing that a significantly different coating structure was obtained by plasma polymerization.
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Affiliation(s)
- Joachim F R Van Guyse
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
| | - Pieter Cools
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Tim Egghe
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Maarten Vergaelen
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
| | - Petra Rigole
- Laboratory of Pharmaceutical Microbiology (LPM), Department of Pharmaceutical Analysis, Faculty of Pharmaceutical Sciences , Ghent University , Ottergemsesteenweg 460 , 9000 Ghent , Belgium
| | - Wenqing Yan
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials , ETH Zürich , Vladimir-Prelog-Weg 5 , CH-8093 Zurich , Switzerland
| | - Edmondo M Benetti
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials , ETH Zürich , Vladimir-Prelog-Weg 5 , CH-8093 Zurich , Switzerland
- Biointerfaces , Swiss Federal Laboratories for Materials Science and Technology (Empa) , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
| | - Valentin-Victor Jerca
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
- Centre for Organic Chemistry "Costin D. Nenitescu" , Romanian Academy , 202B Spl. Independentei CP 35-108 , 060023 Bucharest , Romania
| | - Heidi Declercq
- Department of Basic Medical Science, Faculty of Medicine and Health Science , Ghent University , De Pintelaan 185 6B3 , 9000 Ghent , Belgium
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology (LPM), Department of Pharmaceutical Analysis, Faculty of Pharmaceutical Sciences , Ghent University , Ottergemsesteenweg 460 , 9000 Ghent , Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
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44
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Wang Y, Hou Q, Ju M, Li W. New Developments in Material Preparation Using a Combination of Ionic Liquids and Microwave Irradiation. NANOMATERIALS 2019; 9:nano9040647. [PMID: 31013641 PMCID: PMC6523822 DOI: 10.3390/nano9040647] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 04/11/2019] [Accepted: 04/16/2019] [Indexed: 12/24/2022]
Abstract
During recent years, synthetic methods combining microwaves and ionic liquids became accepted as a promising methodology for various materials preparations because of their high efficiency and low energy consumption. Ionic liquids with high polarity are heated rapidly, volumetrically and simultaneously under microwave irradiation. Hence, combination of microwave irradiation as a heating source with ionic liquids with various roles (e.g., solvent, additive, template or reactant) opened a completely new technique in the last twenty years for nanomaterials and polymers preparation for applications in various materials science fields including polymer science. This review summarizes recent developments of some common materials syntheses using microwave-assisted ionic liquid method with a focus on inorganic nanomaterials, polymers, carbon-derived composites and biomass-based composites. After that, the mechanisms involved in microwave-assisted ionic-liquid (MAIL) are discussed briefly. This review also highlights the role of ionic liquids in the reaction and crucial issues that should be addressed in future research involving this synthesis technique.
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Affiliation(s)
- Yannan Wang
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Qidong Hou
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Meiting Ju
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Weizun Li
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
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Kerscher B, Trötschler TM, Pásztói B, Gröer S, Szabó Á, Iván B, Mülhaupt R. Thermoresponsive Polymer Ionic Liquids and Nanostructured Hydrogels Based upon Amphiphilic Polyisobutylene-b-poly(2-ethyl-2-oxazoline) Diblock Copolymers. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00296] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Benjamin Kerscher
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, D-79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
| | - Tobias M. Trötschler
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, D-79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
| | - Balázs Pásztói
- Polymer Chemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
- George Hevesy PhD School of Chemistry, Institute of Chemistry, Faculty of Science, Eötvös Loránd University, Pázmány Péter sétány 2, H-1117 Budapest, Hungary
| | - Saskia Gröer
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, D-79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
| | - Ákos Szabó
- Polymer Chemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
| | - Béla Iván
- Polymer Chemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
| | - Rolf Mülhaupt
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, D-79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
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46
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Zhang H, Sun Y, Zhou T, Yu Q, Yang Z, Cai Z, Cang H. Poly(2-oxazoline)-based nanoparticles with aggregation-induced emission (AIE) for targeted cell imaging. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2018.1525550] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Huaihong Zhang
- School of Chemistry and Biology, Yancheng Institute of Technology, Yancheng, China
- College of Chemistry and Chemical Engineering, Southeast University, Nanjing, China
| | - Yu Sun
- College of Chemistry and Chemical Engineering, Southeast University, Nanjing, China
| | - Tao Zhou
- School of Chemistry and Biology, Yancheng Institute of Technology, Yancheng, China
| | - Qing Yu
- School of Chemistry and Biology, Yancheng Institute of Technology, Yancheng, China
| | - Zhenqing Yang
- School of Chemistry and Biology, Yancheng Institute of Technology, Yancheng, China
| | - Zhaosheng Cai
- School of Chemistry and Biology, Yancheng Institute of Technology, Yancheng, China
| | - Hui Cang
- School of Chemistry and Biology, Yancheng Institute of Technology, Yancheng, China
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47
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Klein T, Parkin J, Jongh PAJM, Esser L, Sepehrizadeh T, Zheng G, Veer M, Alt K, Hagemeyer CE, Haddleton DM, Davis TP, Thelakkat M, Kempe K. Functional Brush Poly(2‐ethyl‐2‐oxazine)s: Synthesis by CROP and RAFT, Thermoresponsiveness and Grafting onto Iron Oxide Nanoparticles. Macromol Rapid Commun 2019; 40:e1800911. [DOI: 10.1002/marc.201800911] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/29/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Tobias Klein
- ARC Centre of Excellence in Convergent Bio‐Nano Science & Technology Monash Institute of Pharmaceutical Sciences Monash University Parkville VIC 3052 Australia
- Applied Functional Polymers Macromolecular Chemistry I University of Bayreuth 95440 Bayreuth Germany
| | - Joshua Parkin
- ARC Centre of Excellence in Convergent Bio‐Nano Science & Technology Monash Institute of Pharmaceutical Sciences Monash University Parkville VIC 3052 Australia
- Chemistry Department University of Warwick Coventry CV4 7AL UK
| | | | - Lars Esser
- ARC Centre of Excellence in Convergent Bio‐Nano Science & Technology Monash Institute of Pharmaceutical Sciences Monash University Parkville VIC 3052 Australia
| | - Tara Sepehrizadeh
- Monash Biomedical Imaging Monash University Wellington Road Clayton VIC 3168 Australia
| | - Gang Zheng
- Monash Biomedical Imaging Monash University Wellington Road Clayton VIC 3168 Australia
| | - Michael Veer
- Monash Biomedical Imaging Monash University Wellington Road Clayton VIC 3168 Australia
| | - Karen Alt
- Australian Centre for Blood Diseases Monash University Melbourne VIC 3004 Australia
| | | | | | - Thomas P. Davis
- ARC Centre of Excellence in Convergent Bio‐Nano Science & Technology Monash Institute of Pharmaceutical Sciences Monash University Parkville VIC 3052 Australia
| | - Mukundan Thelakkat
- Applied Functional Polymers Macromolecular Chemistry I University of Bayreuth 95440 Bayreuth Germany
| | - Kristian Kempe
- ARC Centre of Excellence in Convergent Bio‐Nano Science & Technology Monash Institute of Pharmaceutical Sciences Monash University Parkville VIC 3052 Australia
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48
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Temperature-responsive star-shaped poly(2-ethyl-2-oxazoline) and poly(2-isopropyl-2-oxazoline) with central thiacalix[4]arene fragments: structure and properties in solutions. Colloid Polym Sci 2019. [DOI: 10.1007/s00396-018-4458-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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49
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Sedlacek O, Monnery BD, Hoogenboom R. Synthesis of defined high molar mass poly(2-methyl-2-oxazoline). Polym Chem 2019. [DOI: 10.1039/c9py00013e] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In this communication, we report for the first time the synthesis of defined high molar mass poly(2-methyl-2-oxazoline) (PMeOx), a water-soluble polymer with excellent anti-fouling properties.
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Affiliation(s)
- Ondrej Sedlacek
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University
- B-9000 Ghent
| | - Bryn D. Monnery
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University
- B-9000 Ghent
| | - Richard Hoogenboom
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University
- B-9000 Ghent
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50
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Van Guyse JFR, Mees MA, Vergaelen M, Baert M, Verbraeken B, Martens PJ, Hoogenboom R. Amidation of methyl ester side chain bearing poly(2-oxazoline)s with tyramine: a quest for a selective and quantitative approach. Polym Chem 2019. [DOI: 10.1039/c9py00014c] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three new amidation approaches are evaluated to incorporate tyramine on methyl ester functional poly(2-oxazolines).
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Affiliation(s)
- Joachim F. R. Van Guyse
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University Krijgslaan 281 S4
- 9000 Ghent
| | - Maarten A. Mees
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University Krijgslaan 281 S4
- 9000 Ghent
| | - Maarten Vergaelen
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University Krijgslaan 281 S4
- 9000 Ghent
| | - Mathijs Baert
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University Krijgslaan 281 S4
- 9000 Ghent
| | - Bart Verbraeken
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University Krijgslaan 281 S4
- 9000 Ghent
| | - Penny J. Martens
- Graduate School of Biomedical Engineering
- UNSW Sydney
- Sydney 2052
- Australia
| | - Richard Hoogenboom
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University Krijgslaan 281 S4
- 9000 Ghent
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