1
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Warne NM, Nowell CJ, Tran MP, Finnegan JR, Feeney OM, Kempe K. Impact of Drug Conjugation Site and Corona Chemistry on the Therapeutic Activity of Polymer Nanorod - Drug Conjugates. Adv Healthc Mater 2024:e2402029. [PMID: 39235719 DOI: 10.1002/adhm.202402029] [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: 06/03/2024] [Revised: 08/23/2024] [Indexed: 09/06/2024]
Abstract
Biocompatible rod-shaped nanoparticles of controlled length can be produced through the heat-induced "living" seeded crystallization-driven self-assembly (CDSA) of poly(2-isopropyl-2-oxazoline)-containing block copolymers. With a hydrophilic poly(2-methyl-2-oxazine) or poly(2-methyl-2-oxazoline) corona, these nanorods have proven non-cytotoxic, non-hemolytic, and ideal for use as a polymer-based drug delivery system. This study demonstrates a facile, one-pot method for the synthesis of mycophenolic acid (MPA)-conjugated block copolymer "unimers" for use in seeded CDSA. Through altering block order during sequential monomer addition cationic ring-opening polymerization (CROP), MPA is conjugated to either the chain end of the core-forming or corona-forming block. This allows bioactive polymer nanorods to be prepared with MPA positioned at either the periphery of the corona, or at the core-corona interface of the nanorod formed during seeded CDSA. In vitro, these nanorods arrest growth in human T and B lymphocytes, with reduced effect in "off-target" monocytes when compared with unconjugated MPA. Furthermore, the conjugation of MPA to the core-corona interface of the nanorods leads to a slower release and reduced cytostatic effect. This study offers a robust investigation into the effect of steric hindrance and corona chemistry on the therapeutic potential of drug-conjugated CDSA nanorods and demonstrates the potential of poly(2-oxazoline)/poly(2-oxazine)-based CDSA nanomaterials as effective drug delivery platforms.
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Affiliation(s)
- Nicole M Warne
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
| | - Cameron J Nowell
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
| | - Mai P Tran
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
| | - John R Finnegan
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
| | - Orlagh M Feeney
- 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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2
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Terracciano R, Liu Y, Varanaraja Z, Godzina M, Yilmaz G, van Hest JCM, Becer CR. Poly(2-oxazoline)-Based Thermoresponsive Stomatocytes. Biomacromolecules 2024. [PMID: 39146037 DOI: 10.1021/acs.biomac.4c00726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
The design of biocompatible and biodegradable nanostructures with controlled morphological features remains a predominant challenge in medical research. Stimuli-responsive vesicles offer significant advantages in drug delivery, biomedical applications, and diagnostic techniques. The combination of poly(2-oxazoline)s with biodegradable polymers could provide exceptional biocompatibility properties and be proposed as a versatile platform for the development of new medicines. Therefore, poly(2-ethyl-2-oxazoline) (PEtOx) and poly(2-isopropyl-2-oxazoline) (PiPrOx) possessing a hydroxy terminal group that acts as an initiator for the ring-opening polymerization of d,l-lactide (DLLA) have been utilized in this study. The resulting amphiphilic block polymers were used to create polymersomes, which undergo solvent-dependent reorganization into bowl-shaped vesicles or stomatocytes. By blending PEtOx-b-PDLLA and PiPrOx-b-PDLLA copolymers, a thermoresponsive stomatocyte was generated, where the opening narrowed and irreversibly closed with a slight increase in the temperature. Detailed transmission electron microscopy analysis reveals the formation of both closed and fused stomatocytes upon heating the sample above the critical solution temperature of PiPrOx.
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Affiliation(s)
| | - Yuechi Liu
- Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600MB, The Netherlands
| | - Zivani Varanaraja
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - Magdalena Godzina
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - Gokhan Yilmaz
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - Jan C M van Hest
- Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600MB, The Netherlands
| | - C Remzi Becer
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
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3
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Liu F, Qu P, Weiss J, Guo K, Weck M. Substrate Channeling in Compartmentalized Nanoreactors. Macromolecules 2024; 57:6805-6815. [PMID: 39071043 PMCID: PMC11270995 DOI: 10.1021/acs.macromol.4c00697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/28/2024] [Accepted: 06/18/2024] [Indexed: 07/30/2024]
Abstract
Thermo- and photoresponsive nanoreactors based on shell cross-linked micelles (SCMs) for the rhodium-catalyzed asymmetric transfer hydrogenation (ATH) of ketones have been developed from poly(2-oxazoline) triblock terpolymers. The nanoreactors incorporate thermoresponsive poly(2-isopropyl-2-oxazoline) as the hydrophilic corona and are covalently cross-linked with a photoswitchable spiropyran molecule. UV irradiation or changes in temperature trigger morphology switching of the polymer-based nanoreactors that alters the hydrophobicity in separate layers of the SCMs, resulting in dynamic substrate selectivity of the ATH in water. Control experiments and kinetic studies show that the thermoresponsive outer layer induces the gated behavior for more hydrophobic substrates, whereas the photoresponsive cross-linking layer induces the gated behavior for less hydrophobic substrates. The nanoreactors mimic the multichannels in Nature, transporting substrates and reagents into the catalytic core which can be controlled through external triggers such as temperature and light wavelengths. Additionally, the nanoreactors can be easily recovered and reused with continued high activity and selectivities.
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Affiliation(s)
- Fangbei Liu
- Molecular Design Institute and Department
of Chemistry, New York University, New York, New York 10003-6688, United
States
| | | | - Jeremy Weiss
- Molecular Design Institute and Department
of Chemistry, New York University, New York, New York 10003-6688, United
States
| | - Kunhao Guo
- Molecular Design Institute and Department
of Chemistry, New York University, New York, New York 10003-6688, United
States
| | - Marcus Weck
- Molecular Design Institute and Department
of Chemistry, New York University, New York, New York 10003-6688, United
States
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4
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Nabiyan A, Muttathukattil A, Tomazic F, Pretzel D, Schubert US, Engel M, Schacher FH. Self-Assembly of Core-Shell Hybrid Nanoparticles by Directional Crystallization of Grafted Polymers. ACS NANO 2023; 17:21216-21226. [PMID: 37721407 DOI: 10.1021/acsnano.3c05461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Nanoparticle self-assembly is an efficient bottom-up strategy for the creation of nanostructures. In a typical approach, ligands are grafted onto the surfaces of nanoparticles to improve the dispersion stability and control interparticle interactions. Ligands then remain secondary and usually are not expected to order significantly during superstructure formation. Here, we investigate how ligands can play a more decisive role in the formation of anisotropic inorganic-organic hybrid materials. We graft poly(2-iso-propyl-2-oxazoline) (PiPrOx) as a crystallizable shell onto SiO2 nanoparticles. By varying the PiPrOx grafting density, both solution stability and nanoparticle aggregation behavior can be controlled. Upon prolonged heating, anisotropic nanostructures form in conjunction with the crystallization of the ligands. Self-assembly of hybrid PiPrOx@SiO2 (shell@core) nanoparticles proceeds in two steps: First, the rapid formation of amorphous aggregates occurs via gelation, mediated by the interaction between nanoparticles through grafted polymer chains. As a second step, slow radial growth of fibers was observed via directional crystallization, governed by the incorporation of crystalline ribbons formed from free polymeric ligands in combination with crystallization of the covalently attached ligand shell. Our work reveals how crystallization-driven self-assembly of ligands can create intricate hybrid nanostructures.
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Affiliation(s)
- Afshin Nabiyan
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, Lessingstraße 8, D-07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich-Schiller University Jena, Philosophenweg 7, D-07743 Jena, Germany
| | - Aswathy Muttathukattil
- Institute for Multiscale Simulation, IZNF, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstrasse 3, 91058 Erlangen, Germany
| | - Federico Tomazic
- Institute for Multiscale Simulation, IZNF, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstrasse 3, 91058 Erlangen, Germany
| | - David Pretzel
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, Lessingstraße 8, D-07743 Jena, Germany
| | - Ulrich S Schubert
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, Lessingstraße 8, D-07743 Jena, Germany
| | - Michael Engel
- Institute for Multiscale Simulation, IZNF, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstrasse 3, 91058 Erlangen, Germany
| | - Felix H Schacher
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, Lessingstraße 8, D-07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich-Schiller University Jena, Philosophenweg 7, D-07743 Jena, Germany
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6
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Smirnova AV, Tenkovtsev AV, Filippov AP. Effect of Annealing at High Temperatures on the Morphology of Aqueous Solutions of Star-Shaped Poly(2-Isopropyl-2-Oxazoline) and Linear Poly(2-Ethyl-5,6-Dihydrooxazine). POLYMER SCIENCE SERIES C 2022. [DOI: 10.1134/s1811238222700072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Finnegan JR, Davis TP, Kempe K. Heat-Induced Living Crystallization-Driven Self-Assembly: The Effect of Temperature and Polymer Composition on the Assembly and Disassembly of Poly(2-oxazoline) Nanorods. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00298] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- John R. Finnegan
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Thomas P. Davis
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Kristian Kempe
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia
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8
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Xue N, Hou X, Qiu XP, Song X, Feng Q, Liu X. Synthesis and solution properties of telechelic poly(2-isopropyl-2-oxazoline) bearing perfluoro end groups. Polym Chem 2022. [DOI: 10.1039/d2py00815g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Telechelic FPIPOZ and its precursor N3PIPOZ films reassembled into discs and short fibers, respectively, when exposed to THF vapor.
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Affiliation(s)
- Na Xue
- Tianjin Key Laboratory of Epigenetics for Organ Development of Preterm Infants, Central Laboratory, Tianjin Fifth Central Hospital, Tianjin 300450, China
| | - Xiaoming Hou
- Department of Critical Care Medicine, Tianjin Fifth Central Hospital, Tianjin 300450, China
| | - Xing-Ping Qiu
- Department of Chemistry, University of Montreal, CP6128 Succursale Centre Ville, Montreal, QC H3C 3J7, Canada
| | - Xiaotao Song
- Department of Critical Care Medicine, Tianjin Fifth Central Hospital, Tianjin 300450, China
| | - Qingguo Feng
- Department of Critical Care Medicine, Tianjin Fifth Central Hospital, Tianjin 300450, China
| | - Xiaozhi Liu
- Tianjin Key Laboratory of Epigenetics for Organ Development of Preterm Infants, Central Laboratory, Tianjin Fifth Central Hospital, Tianjin 300450, China
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9
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Oleszko-Torbus N. Recent Advances in Modifications, Properties and Applications of 2-Isopropyl-2-Oxazoline (Co)Polymers. POLYM REV 2021. [DOI: 10.1080/15583724.2021.1993252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Warne NM, Finnegan JR, Feeney OM, Kempe K. Using
2‐isopropyl
‐2‐oxazine to explore the effect of monomer distribution and polymer architecture on the thermoresponsive behavior of copolymers. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210551] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Nicole M. Warne
- ARC Centre of Excellence in Convergent Bio‐Nano Science & Technology, and Drug Delivery, Disposition and Dynamics Monash Institute of Pharmaceutical Sciences, Monash University Parkville Victoria Australia
| | - John R. Finnegan
- ARC Centre of Excellence in Convergent Bio‐Nano Science & Technology, and Drug Delivery, Disposition and Dynamics Monash Institute of Pharmaceutical Sciences, Monash University Parkville Victoria Australia
| | - Orlagh M. Feeney
- ARC Centre of Excellence in Convergent Bio‐Nano Science & Technology, and Drug Delivery, Disposition and Dynamics Monash Institute of Pharmaceutical Sciences, Monash University Parkville Victoria Australia
| | - Kristian Kempe
- ARC Centre of Excellence in Convergent Bio‐Nano Science & Technology, and Drug Delivery, Disposition and Dynamics Monash Institute of Pharmaceutical Sciences, Monash University Parkville Victoria Australia
- Materials Science and Engineering Monash University Clayton Victoria Australia
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11
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Oleszko-Torbus N, Mendrek B, Kowalczuk A, Wałach W, Trzebicka B, Utrata-Wesołek A. The Role of Polymer Structure in Formation of Various Nano- and Microstructural Materials: 30 Years of Research in the Laboratory of Nano- and Microstructural Materials at the Centre of Polymer and Carbon Materials PAS. Polymers (Basel) 2021; 13:2892. [PMID: 34502932 PMCID: PMC8434041 DOI: 10.3390/polym13172892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 11/16/2022] Open
Abstract
The review summarizes the research carried out in the Laboratory of Nano- and Microstructural Materials at the Centre of Polymer and Carbon Materials, Polish Academy of Sciences (CMPW PAS). Studies carried out for many years under the guidance of Professor Andrzej Dworak led to the development and exploration of the mechanisms of oxirane and cyclic imine polymerization and controlled radical polymerization of methacrylate monomers. Based on that knowledge, within the last three decades, macromolecules with the desired composition, molar mass and topology were obtained and investigated. The ability to control the structure of the synthesized polymers turned out to be important, as it provided a way to tailor the physiochemical properties of the materials to their specific uses. Many linear polymers and copolymers as well as macromolecules with branched, star, dendritic and hyperbranched architectures were synthesized. Thanks to the applied controlled polymerization techniques, it was possible to obtain hydrophilic, hydrophobic, amphiphilic and stimulus-sensitive polymers. These tailor-made polymers with controlled properties were used for the construction of various types of materials, primarily on the micro- and nanoscales, with a wide range of possible applications, mainly in biomedicine. The diverse topology of polymers, and thus their properties, made it possible to obtain various types of polymeric nanostructures and use them as nanocarriers by encapsulation of biologically active substances. Additionally, polymer layers were obtained with features useful in medicine, particularly regenerative medicine and tissue engineering.
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Affiliation(s)
| | | | | | | | - Barbara Trzebicka
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-819 Zabrze, Poland; (N.O.-T.); (B.M.); (A.K.); (W.W.)
| | - Alicja Utrata-Wesołek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-819 Zabrze, Poland; (N.O.-T.); (B.M.); (A.K.); (W.W.)
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12
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Segiet D, Stockmann A, Sadowski J, Katzenberg F, Tiller JC. Insights in the Thermal Volume Transition of Poly(2‐oxazoline) Hydrogels. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100157] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dominik Segiet
- Biomaterials & Polymer Science, Department of Biochemical and Chemical Engineering TU Dortmund 44221 Dortmund Germany
| | - Annika Stockmann
- Biomaterials & Polymer Science, Department of Biochemical and Chemical Engineering TU Dortmund 44221 Dortmund Germany
| | - Jan Sadowski
- Biomaterials & Polymer Science, Department of Biochemical and Chemical Engineering TU Dortmund 44221 Dortmund Germany
| | - Frank Katzenberg
- Biomaterials & Polymer Science, Department of Biochemical and Chemical Engineering TU Dortmund 44221 Dortmund Germany
| | - Joerg C. Tiller
- Biomaterials & Polymer Science, Department of Biochemical and Chemical Engineering TU Dortmund 44221 Dortmund Germany
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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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14
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Finnegan JR, Pilkington EH, Alt K, Rahim MA, Kent SJ, Davis TP, Kempe K. Stealth nanorods via the aqueous living crystallisation-driven self-assembly of poly(2-oxazoline)s. Chem Sci 2021; 12:7350-7360. [PMID: 34163824 PMCID: PMC8171341 DOI: 10.1039/d1sc00938a] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 04/10/2021] [Indexed: 11/21/2022] Open
Abstract
The morphology of nanomaterials critically influences their biological interactions. However, there is currently a lack of robust methods for preparing non-spherical particles from biocompatible materials. Here, we combine 'living' crystallisation-driven self-assembly (CDSA), a seeded growth method that enables the preparation of rod-like polymer nanoparticles, with poly(2-oxazoline)s (POx), a polymer class that exhibits 'stealth' behaviour and excellent biocompatibility. For the first time, the 'living' CDSA process was carried out in pure water, resulting in POx nanorods with lengths ranging from ∼60 to 635 nm. In vitro and in vivo study revealed low immune cell association and encouraging blood circulation times, but little difference in the behaviour of POx nanorods of different length. The stealth behaviour observed highlights the promising potential of POx nanorods as a next generation stealth drug delivery platform.
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Affiliation(s)
- John R Finnegan
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University Parkville Victoria 3052 Australia
| | - Emily H Pilkington
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University Parkville Victoria 3052 Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science, Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne Parkville Victoria 3010 Australia
| | - Karen Alt
- NanoTheranostics Laboratory, Australian Centre for Blood Diseases, Monash University Melbourne Victoria 3004 Australia
| | - Md Arifur Rahim
- School of Chemical Engineering, University of New South Wales (UNSW) Sydney NSW 2052 Australia
| | - Stephen J Kent
- ARC Centre of Excellence in Convergent Bio-Nano Science, Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne Parkville Victoria 3010 Australia
| | - Thomas P Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University Parkville Victoria 3052 Australia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland Brisbane QLD 4072 Australia
| | - Kristian Kempe
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University Parkville Victoria 3052 Australia
- Materials Science and Engineering, Monash University Clayton VIC 3800 Australia
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15
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Zahoranová A, Luxenhofer R. Poly(2-oxazoline)- and Poly(2-oxazine)-Based Self-Assemblies, Polyplexes, and Drug Nanoformulations-An Update. Adv Healthc Mater 2021; 10:e2001382. [PMID: 33448122 DOI: 10.1002/adhm.202001382] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/03/2020] [Indexed: 12/30/2022]
Abstract
For many decades, poly(2-oxazoline)s and poly(2-oxazine)s, two closely related families of polymers, have led the life of a rather obscure research topic with only a few research groups world-wide working with them. This has changed in the last five to ten years, presumably triggered significantly by very promising clinical trials of the first poly(2-oxazoline)-based drug conjugate. The huge chemical and structural toolbox poly(2-oxazoline)s and poly(2-oxazine)s has been extended very significantly in the last few years, but their potential still remains largely untapped. Here, specifically, the developments in macromolecular self-assemblies and non-covalent drug delivery systems such as polyplexes and drug nanoformulations based on poly(2-oxazoline)s and poly(2-oxazine)s are reviewed. This highly dynamic field benefits particularly from the extensive synthetic toolbox poly(2-oxazoline)s and poly(2-oxazine)s offer and also may have the largest potential for a further development. It is expected that the research dynamics will remain high in the next few years, particularly as more about the safety and therapeutic potential of poly(2-oxazoline)s and poly(2-oxazine)s is learned.
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Affiliation(s)
- Anna Zahoranová
- Institute of Applied Synthetic Chemistry Vienna University of Technology Getreidemarkt 9/163MC Vienna 1060 Austria
| | - Robert Luxenhofer
- Functional Polymer Materials Chair for Advanced Materials Synthesis Institute for Functional Materials and Biofabrication Department of Chemistry and Pharmacy Julius‐Maximilians‐Universität Würzburg Röntgenring 11 Würzburg 97070 Germany
- Soft Matter Chemistry Department of Chemistry Helsinki University Helsinki 00014 Finland
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16
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Alternative to Poly(2-isopropyl-2-oxazoline) with a Reduced Ability to Crystallize and Physiological LCST. Int J Mol Sci 2021; 22:ijms22042221. [PMID: 33672348 PMCID: PMC7926427 DOI: 10.3390/ijms22042221] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/19/2021] [Accepted: 02/20/2021] [Indexed: 12/13/2022] Open
Abstract
In this work, we sought to examine whether the presence of alkyl substituents randomly distributed within the main chain of a 2-isopropyl-2-oxazoline-based copolymer will decrease its ability to crystallize when compared to its homopolymer. At the same time, we aimed to ensure an appropriate hydrophilic/lipophilic balance in the copolymer and maintain the phase transition in the vicinity of the human body temperature. For this reason, copolymers of 2-ethyl-4-methyl-2-oxazoline and 2-isopropyl-2-oxazoline were synthesized. The thermoresponsive behavior of the copolymers in water, the influence of salt on the cloud point, the presence of hysteresis of the phase transition and the crystallization ability in a water solution under long-term heating conditions were studied by turbidimetry. The ability of the copolymers to crystallize in the solid state, and their thermal properties, were analyzed by differential scanning calorimetry and X-ray diffractometry. A cytotoxicity assay was used to estimate the viability of human fibroblasts in the presence of the obtained polymers. The results allowed us to demonstrate a nontoxic alternative to poly(2-isopropyl-2-oxazoline) (PiPrOx) with a physiological phase transition temperature (LCST) and a greatly reduced tendency to crystallize. The synthesis of 2-oxazoline polymers with such well-defined properties is important for future biomedical applications.
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17
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Polymer structure and property effects on solid dispersions with haloperidol: Poly(N-vinyl pyrrolidone) and poly(2-oxazolines) studies. Int J Pharm 2020; 590:119884. [DOI: 10.1016/j.ijpharm.2020.119884] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 09/10/2020] [Accepted: 09/11/2020] [Indexed: 02/08/2023]
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18
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Nishimura T, Sumi N, Mukai SA, Sasaki Y, Akiyoshi K. Supramacromolecular injectable hydrogels by crystallization-driven self-assembly of carbohydrate-conjugated poly(2-isopropyloxazoline)s for biomedical applications. J Mater Chem B 2020; 7:6362-6369. [PMID: 31642846 DOI: 10.1039/c9tb00918c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An approach for the preparation of self-healing and injectable hydrogels based on the crystallization-driven self-assembly of carbohydrate-conjugated poly(2-isopropyloxazoline)s is reported. Hydrogelation does not require any organic solvents, as the polymers dissolve in water below their lower critical solution temperatures. The transplanted hydrogels cause no significant foreign-body response. Considering the simplicity of the method and the biocompatibility of the resulting injectable hydrogels, crystallization-driven hydrogelation of poly(oxazoline)-based polymers may potentially be used in a wide range of biomedical applications.
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Affiliation(s)
- Tomoki Nishimura
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Naoki Sumi
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Sada-Atsu Mukai
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Yoshihiro Sasaki
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Kazunari Akiyoshi
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
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19
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Konefał R, Černoch P, Konefał M, Spěváček J. Temperature Behavior of Aqueous Solutions of Poly(2-oxazoline) Homopolymer and Block Copolymers Investigated by NMR Spectroscopy and Dynamic Light Scattering. Polymers (Basel) 2020; 12:E1879. [PMID: 32825475 PMCID: PMC7565327 DOI: 10.3390/polym12091879] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 11/16/2022] Open
Abstract
1H NMR methods in combination with dynamic light scattering were applied to study temperature behavior of poly(2-isopropyl-2-oxazoline) (PIPOx) homopolymer as well as PIPOx-b-poly(2-methyl-2-oxazoline) (PMeOx) and poly(2-ethyl-2-oxazoline) (PEtOx)-b-PMeOx diblock copolymers in aqueous solutions. 1H NMR spectra showed a different way of phase transition for the main and side chains in PIPOx-based solutions. Additionally, the phase transition is irreversible for PIPOx homopolymer and partially reversible for PIPOx-b-PMeOx copolymer. As revealed by NMR, the phase transition in PEtOx-based copolymers solutions exists despite the absence of solution turbidity. It is very broad, virtually independent of the copolymer composition and reversible with some hysteresis. Two types of water molecules were detected in solutions of the diblock copolymers above the phase transition-"free" with long and "bound" with short spin-spin relaxation times T2. NOESY spectra revealed information about conformational changes observed already in the pre-transition region of PIPOx-b-PMeOx copolymer solution.
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Affiliation(s)
- Rafał Konefał
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic; (P.Č.); (M.K.)
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20
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Wang Z, Lin M, Bonduelle C, Li R, Shi Z, Zhu C, Lecommandoux S, Li Z, Sun J. Thermoinduced Crystallization-Driven Self-Assembly of Bioinspired Block Copolymers in Aqueous Solution. Biomacromolecules 2020; 21:3411-3419. [PMID: 32786675 DOI: 10.1021/acs.biomac.0c00844] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Delicate control over architectures via crystallization-driven self-assembly (CDSA) in aqueous solution, particularly combined with external stimuli, is rare and challenging. Here, we report a stepwise CDSA process thermally initiated from amphiphilic poly(N-allylglycine)-b-poly(N-octylglycine) (PNAG-b-PNOG) conjugated with thiol-terminated triethylene glycol monomethyl ethers ((PNAG-g-EG3)-b-PNOG) in aqueous solution. The diblock copolymers show a reversible thermoresponsive behavior with nearly identical cloud points in both heating and cooling runs. In contrast, the morphology transition of the assemblies is irreversible upon a heating-cooling cycle because of the presence of a confined domain arising from crystalline PNOG, which allows for the achievement of different nanostructured assemblies by the same polymer. We demonstrated that the thermoresponsive property of PNAG-g-EG3 initiates assembly kinetically that is subsequently promoted by crystallization of PNOG thermodynamically. The irreversible morphology transition behavior provides a convenient platform for comparing the cellular uptake efficiency of nanostructured assemblies with various morphologies that are otherwise similar.
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Affiliation(s)
- Zhiwei Wang
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Min Lin
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Colin Bonduelle
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
| | - Rongye Li
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Zhekun Shi
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Chenhui Zhu
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | | | - Zhibo Li
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Jing Sun
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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21
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Oleszko-Torbus N, Mendrek B, Kowalczuk A, Utrata-Wesołek A, Dworak A, Wałach W. Selective Partial Hydrolysis of 2-isopropyl-2-oxazoline Copolymers towards Decreasing the Ability to Crystallize. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3403. [PMID: 32752250 PMCID: PMC7435452 DOI: 10.3390/ma13153403] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 07/28/2020] [Accepted: 07/30/2020] [Indexed: 02/07/2023]
Abstract
Poly(2-isopropyl-2-oxazoline) (PiPrOx) is readily prone to crystallization both in solid and from solutions. This feature is detrimental for certain applications. Here, we examine whether the presence of unsubstituted ethyleneimine (EI) units, a gradient distributed within a polymer chain composed of 2-isopropyl-2-oxazoline (iPrOx) and 2-methyl-2-oxazoline (MOx) units, decreases the ability to crystallize the copolymer and affects thermal properties compared to the homopolymer of iPrOx. We assumed that the separation of stiff iPrOx units by the more flexible EI will affect the spatial arrangements of the ordered chains, slightly plasticize and, as a result, decrease their ability to crystallize. The selective hydrolysis of gradient iPrOx and 2-methyl-2-oxazoline (MOx) copolymers, carried out under mild conditions, led to iPrOx/MOx/EI copolymers. To the best of our knowledge, the selective hydrolysis of these copolymers has never been carried out before. Their thermal properties and crystallization abilities, both in a solid state and from an aqueous solution, were analyzed. Based on the analysis of polymer charge and cytotoxicity studies, the potential use of the copolymers obtained was indicated in some biological systems.
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Affiliation(s)
- Natalia Oleszko-Torbus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland; (B.M.); (A.K.); (A.U.-W.); (A.D.); (W.W.)
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22
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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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23
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Nabiyan A, Biehl P, Schacher FH. Crystallization vs Metal Chelation: Solution Self-Assembly of Dual Responsive Block Copolymers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00792] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Afshin Nabiyan
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, Lessingstraße 8, D-07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, D-07743 Jena, Germany
| | - Philip Biehl
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, Lessingstraße 8, D-07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, D-07743 Jena, Germany
| | - Felix H. Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, Lessingstraße 8, D-07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, D-07743 Jena, Germany
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24
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Self-organization of thermosensitive star-shaped poly(2-isopropyl-2-oxazolines) influenced by arm number and generation of carbosilane dendrimer core in aqueous solutions. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04619-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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25
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Wałach W, Oleszko-Torbus N, Utrata-Wesołek A, Bochenek M, Kijeńska-Gawrońska E, Górecka Ż, Święszkowski W, Dworak A. Processing of (Co)Poly(2-oxazoline)s by Electrospinning and Extrusion from Melt and the Postprocessing Properties of the (Co)Polymers. Polymers (Basel) 2020; 12:E295. [PMID: 32024273 PMCID: PMC7077476 DOI: 10.3390/polym12020295] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 01/24/2020] [Accepted: 01/30/2020] [Indexed: 01/31/2023] Open
Abstract
Poly(2-oxazoline) (POx) matrices in the form of non-woven fibrous mats and three-dimensional moulds were obtained by electrospinning and fused deposition modelling (FDM), respectively. To obtain these materials, poly(2-isopropyl-2-oxazoline) (PiPrOx) and gradient copolymers of 2-isopropyl- with 2-n-propyl-2-oxazoline (P(iPrOx-nPrOx)), with relatively low molar masses and low dispersity values, were processed. The conditions for the electrospinning of POx were optimised for both water and the organic solvent. Also, the FDM conditions for the fabrication of POx multi-layer moulds of cylindrical or cubical shape were optimised. The properties of the POx after electrospinning and extrusion from melt were determined. The molar mass of all (co)poly(2-oxazoline)s did not change after electrospinning. Also, FDM did not influence the molar masses of the (co)polymers; however, the long processing of the material caused degradation and an increase in molar mass dispersity. The thermal properties changed significantly after processing of POx what was monitored by increase in enthalpy of exo- and endothermic peaks in differential scanning calorimetry (DSC) curve. The influence of the processing conditions on the structure and properties of the final material were evaluated having in a mind their potential application as scaffolds.
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Affiliation(s)
- Wojciech Wałach
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland; (N.O.-T.); (A.U.-W.); (M.B.); (A.D.)
| | - Natalia Oleszko-Torbus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland; (N.O.-T.); (A.U.-W.); (M.B.); (A.D.)
| | - Alicja Utrata-Wesołek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland; (N.O.-T.); (A.U.-W.); (M.B.); (A.D.)
| | - Marcelina Bochenek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland; (N.O.-T.); (A.U.-W.); (M.B.); (A.D.)
| | - Ewa Kijeńska-Gawrońska
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska St., 02-507 Warsaw, Poland; (E.K.-G.); (Ż.G.); (W.Ś.)
| | - Żaneta Górecka
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska St., 02-507 Warsaw, Poland; (E.K.-G.); (Ż.G.); (W.Ś.)
| | - Wojciech Święszkowski
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska St., 02-507 Warsaw, Poland; (E.K.-G.); (Ż.G.); (W.Ś.)
| | - Andrzej Dworak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland; (N.O.-T.); (A.U.-W.); (M.B.); (A.D.)
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26
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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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27
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Abstract
Supramolecular polymers are non-covalent assemblies of unimeric building blocks connected by secondary interactions and hold great promises due to their dynamic nature.
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Affiliation(s)
| | | | - Sebastien Perrier
- Department of Chemistry
- University of Warwick
- Coventry CV4 7AL
- UK
- Faculty of Pharmacy and Pharmaceutical Sciences
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28
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Altıntaş Z, Beruhil Adatoz E, Ijaz A, Miko A, Demirel AL. Self-assembled poly(2-ethyl-2-oxazoline)/malonic acid hollow fibers in aqueous solutions. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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29
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Kurlykin MP, Dudkina MM, Ten’kovtsev AV. Star-Shaped Thermosensitive Poly(2-ethyl-2-oxazines) with the Calixarene Core. POLYMER SCIENCE SERIES B 2019. [DOI: 10.1134/s156009041806009x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Lee J, Park JM, Jang WD. Fructose-sensitive thermal transition behaviour of boronic ester-bearing telechelic poly(2-isopropyl-2-oxazoline). Chem Commun (Camb) 2019; 55:3343-3346. [DOI: 10.1039/c8cc09835b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Boronic ester-bearing telechelic poly(2-isopropyl-2-oxazoline) (B-PiPrOx-B) exhibited a hydrophilic–hydrophobic phase transition near human-body temperature in aqueous media.
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Affiliation(s)
- Jiyoung Lee
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Korea
| | - Jong Min Park
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Korea
| | - Woo-Dong Jang
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Korea
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31
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Ďorďovič V, Verbraeken B, Hogenboom R, Kereïche S, Matějíček P, Uchman M. Tuning of Thermoresponsivity of a Poly(2-alkyl-2-oxazoline) Block Copolymer by Interaction with Surface-Active and Chaotropic Metallacarborane Anion. Chem Asian J 2018; 13:838-845. [PMID: 29384259 DOI: 10.1002/asia.201701720] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Indexed: 11/08/2022]
Abstract
Thermoresponsive nanoparticles based on the interaction of metallacarboranes, bulky chaotropic and surface-active anions, and poly(2-alkyl-2-oxazoline) block copolymers were prepared. Recently, the great potential of metallacarboranes have been recognized in biomedicine and many delivery nanosystems have been proposed. However, none of them are thermoresponsive. Therefore, a thermoresponsive block copolymer, poly(2-methyl-2-oxazoline)-block-poly(2-n-propyl-2-oxazoline) (PMeOx-PPrOx), was synthesized to encapsulate metallacarboranes. Light scattering, NMR spectroscopy, isothermal titration calorimetry, and cryogenic TEM were used to characterize all solutions of the formed nanoparticles. The cloud-point temperature (TCP ) of the block copolymer was observed at 30 °C and polymeric micelles formed above this temperature. Cobalt bis(dicarbollide) anion (COSAN) interacts with both polymeric segments. Depending on the COSAN concentration, this affinity influenced the phase transition of the thermoresponsive PPrOx block. The TCP shifted to lower values at a lower COSAN content. At higher COSAN concentrations, the hybrid nanoparticles are fragmented into relatively small pieces. This system is also thermoresponsive, whereby an increase in temperature leads to higher polymer mobility and COSAN release.
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Affiliation(s)
- Vladimír Ďorďovič
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague 2, Czech Republic
| | - Bart Verbraeken
- Supramolecular Chemistry Group, Department of Organic and Macromolecular chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281-S4, B-9000, Gent, Belgium
| | - Richard Hogenboom
- Supramolecular Chemistry Group, Department of Organic and Macromolecular chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281-S4, B-9000, Gent, Belgium
| | - Sami Kereïche
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague 2, Czech Republic.,Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Purkynie Ustav, Albertov 4, 12 801, Prague, Czech Republic
| | - Pavel Matějíček
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague 2, Czech Republic
| | - Mariusz Uchman
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague 2, Czech Republic
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32
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Brendel JC, Schacher FH. Block Copolymer Self-Assembly in Solution-Quo Vadis? Chem Asian J 2018; 13:230-239. [DOI: 10.1002/asia.201701542] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Johannes C. Brendel
- Institute of Organic Chemistry and Macromolecular Chemistry; Friedrich-Schiller-University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich-Schiller-University Jena; Philosophenweg 7 07743 Jena Germany
| | - Felix H. Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry; Friedrich-Schiller-University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich-Schiller-University Jena; Philosophenweg 7 07743 Jena Germany
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33
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Pooch F, Sliepen M, Svedström KJ, Korpi A, Winnik FM, Tenhu H. Inversion of crystallization rates in miscible block copolymers of poly(lactide)- block-poly(2-isopropyl-2-oxazoline). Polym Chem 2018. [DOI: 10.1039/c8py00198g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
From a miscible melt, crystallization drives phase-separation of PLLA-PiPOx. PLLA plasticizes PiPOx and inverts the crystallization rates compared to the homopolymers.
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Affiliation(s)
- Fabian Pooch
- Department of Chemistry
- University of Helsinki
- Helsinki 00014
- Finland
| | | | | | - Antti Korpi
- Department of Bioproducts and Biosystems
- Aalto University
- Aalto 00076
- Finland
| | - Françoise M. Winnik
- Department of Chemistry
- University of Helsinki
- Helsinki 00014
- Finland
- WPI International Centre for Nanoarchitectonics (MANA)
| | - Heikki Tenhu
- Department of Chemistry
- University of Helsinki
- Helsinki 00014
- Finland
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34
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Glassner M, Verbraeken B, Jerca VV, Van Hecke K, Tsanaktsidis J, Hoogenboom R. Poly(2-oxazoline)s with pendant cubane groups. Polym Chem 2018. [DOI: 10.1039/c8py01037d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and properties of poly(2-oxazoline)s with cubane side chains are explored in this work.
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Affiliation(s)
- Mathias Glassner
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Ghent
| | - Bart Verbraeken
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Ghent
| | - Valentin Victor Jerca
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Ghent
| | | | | | - Richard Hoogenboom
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Ghent
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35
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Wang W, Staub MC, Zhou T, Smith DM, Qi H, Laird ED, Cheng S, Li CY. Polyethylene nano crystalsomes formed at a curved liquid/liquid interface. NANOSCALE 2017; 10:268-276. [PMID: 29210419 DOI: 10.1039/c7nr08106e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Crystallization is incommensurate with nanoscale curved space due to the lack of three dimensional translational symmetry of the latter. Herein, we report the formation of single-crystal-like, nanosized polyethylene (PE) capsules using a miniemulsion solution crystallization method. The miniemulsion was formed at elevated temperatures using PE organic solution as the oil phase and sodium dodecyl sulfate as the surfactant. Subsequently, cooling the system stepwisely for controlled crystallization led to the formation of hollow, nanosized PE crystalline capsules, which are named as crystalsomes since they mimic the classical self-assembled structures such as liposome, polymersome and colloidosome. We show that the formation of the nanosized PE crystalsomes is driven by controlled crystallization at the curved liquid/liquid interface of the miniemulson droplet. The morphology, structure and mechanical properties of the PE crystalsomes were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and atomic force spectroscopy. Electron diffraction showed the single-crystal-like nature of the crystalsomes. The incommensurateness between the nanocurved interface and the crystalline packing led to reduced crystallinity and crystallite size of the PE crystalsome, as observed from the X-ray diffraction measurements. Moreover, directly quenching the emulsion below the spinodal line led to the formation of hierarchical porous PE crystalsomes due to the coupling of the PE crystallization and liquid/liquid phase separation. We anticipate that this unique crystalsome represents a new type of nanostructure that might be used as nanodrug carriers and ultrasound contrast agents.
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Affiliation(s)
- Wenda Wang
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USA.
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36
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Haktaniyan M, Atilla S, Cagli E, Erel-Goktepe I. pH- and temperature-induced release of doxorubicin from multilayers of poly(2-isopropyl-2-oxazoline) and tannic acid. POLYM INT 2017. [DOI: 10.1002/pi.5458] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Meltem Haktaniyan
- Department of Chemistry; Middle East Technical University; Cankaya Ankara Turkey
| | - Suleyman Atilla
- Department of Chemistry; Middle East Technical University; Cankaya Ankara Turkey
| | - Eda Cagli
- Department of Chemistry; Middle East Technical University; Cankaya Ankara Turkey
| | - Irem Erel-Goktepe
- Department of Chemistry; Middle East Technical University; Cankaya Ankara Turkey
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37
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Glassner M, Vergaelen M, Hoogenboom R. Poly(2-oxazoline)s: A comprehensive overview of polymer structures and their physical properties. POLYM INT 2017. [DOI: 10.1002/pi.5457] [Citation(s) in RCA: 151] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Mathias Glassner
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan Belgium
| | - Maarten Vergaelen
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan Belgium
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Oleszko-Torbus N, Wałach W, Utrata-Wesołek A, Dworak A. Control of the Crystalline Properties of 2-Isopropyl-2-oxazoline Copolymers in Condensed State and in Solution Depending on the Composition. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01639] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Natalia Oleszko-Torbus
- Centre of Polymer and Carbon
Materials, Polish Academy of Sciences, ul. M. Curie - Skłodowskiej
34, 41-819 Zabrze, Poland
| | - Wojciech Wałach
- Centre of Polymer and Carbon
Materials, Polish Academy of Sciences, ul. M. Curie - Skłodowskiej
34, 41-819 Zabrze, Poland
| | - Alicja Utrata-Wesołek
- Centre of Polymer and Carbon
Materials, Polish Academy of Sciences, ul. M. Curie - Skłodowskiej
34, 41-819 Zabrze, Poland
| | - Andrzej Dworak
- Centre of Polymer and Carbon
Materials, Polish Academy of Sciences, ul. M. Curie - Skłodowskiej
34, 41-819 Zabrze, Poland
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Oleszko-Torbus N, Utrata-Wesołek A, Wałach W, Dworak A. Solution behavior of thermoresponsive random and gradient copolymers of 2-n-propyl-2-oxazoline. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2016.11.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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40
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41
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Furuncuoğlu Özaltın T, Aviyente V, Atılgan C, Demirel L. Multiscale modeling of poly(2-isopropyl-2-oxazoline) chains in aqueous solution. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2016.10.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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42
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Korchia L, Bouilhac C, Robin JJ, Lapinte V. Amphiphilic photo-induced triblock polyoxazoline through coumarin dimerization: Efficient synthetic tool for nanoparticles. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2016.09.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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43
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Toncheva-Moncheva N, Veleva-Kostadinova E, Tsvetanov C, Momekova D, Rangelov S. Preparation and properties of positively charged mesoglobules based on poly(2-isopropyl-2-oxazoline) and evaluation of their potential as carriers of polynucleotides. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.01.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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44
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An J, Liu X, Dedinaite A, Korchagina E, Winnik FM, Claesson PM. Effect of solvent quality and chain density on normal and frictional forces between electrostatically anchored thermoresponsive diblock copolymer layers. J Colloid Interface Sci 2017; 487:88-96. [DOI: 10.1016/j.jcis.2016.10.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 10/10/2016] [Accepted: 10/11/2016] [Indexed: 11/16/2022]
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45
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Jung Y, Nam J, Kim JH, Jang WD. Hydrophilic–hydrophobic phase transition of photoresponsive linear and macrocyclic poly(2-isopropyl-2-oxazoline)s. RSC Adv 2017. [DOI: 10.1039/c7ra01042g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Photoisomerization induced a great change of thermal transition temperature.
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Affiliation(s)
- Yongseok Jung
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Korea
| | - Jaehyuk Nam
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Korea
| | - Joo-Ho Kim
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Korea
| | - Woo-Dong Jang
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Korea
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46
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Abstract
Recent advances in thermoresponsive poly(2-oxazoline)s, polypeptoids, and polypeptides, with a specific focus on structure–property relationships, self-assembly, and applications, are reviewed.
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Affiliation(s)
- Richard Hoogenboom
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- B-9000 Ghent
- Belgium
| | - Helmut Schlaad
- Institute of Chemistry
- University of Potsdam
- 14476 Potsdam
- Germany
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47
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Sun S, Wu P. From globules to crystals: a spectral study of poly(2-isopropyl-2-oxazoline) crystallization in hot water. Phys Chem Chem Phys 2016; 17:32232-40. [PMID: 26580840 DOI: 10.1039/c5cp05626h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
One easy strategy to comprehend the complex folding/crystallization behaviors of proteins is to study the self-assembly process of their synthetic polymeric analogues with similar properties owing to their simple structures and easy access to molecular design. Poly(2-isopropyl-2-oxazoline) (PIPOZ) is often regarded as an ideal pseudopeptide with similar two-step crystallization behavior to proteins, whose aqueous solution experiences successive lower critical solution temperature (LCST)-type liquid-liquid phase separation upon heating and irreversible crystallization when annealed above LCST for several hours. In this paper, by microscopic observations, IR and Raman spectroscopy in combination with 2D correlation analysis, we show that the second step of PIPOZ crystallization in hot water can be further divided into two apparent stages, i.e., nucleation and crystal growth, and perfect crystalline PIPOZ chains are found to only develop in the second stage. While all the groups exhibit changes in initial nucleation, only methylene groups on the backbone participate in the crystal growth stage. During nucleation, a group motion transfer is found from the side chain to the backbone, and nucleation is assumed to be mainly driven by the cleavage of bridging C=O···D-O-D···O=C hydrogen bonds followed by chain arrangement due to amide dipolar orientation. Nevertheless, during crystal growth, a further chain ordering process occurs resulting in the final formation of crystalline PIPOZ chains with partial trans conformation of backbones and alternative side chains on the two sides. The underlying crystallization mechanism of PIPOZ in hot water we present here may provide very useful information for understanding the crystallization of biomacromolecules in biological systems.
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Affiliation(s)
- Shengtong Sun
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science and Laboratory for Advanced Materials, Fudan University, Shanghai 200433, China. and State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China.
| | - Peiyi Wu
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science and Laboratory for Advanced Materials, Fudan University, Shanghai 200433, China.
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48
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Kurlykin MP, Bursian AE, Golub OV, Filippov AP, Tenkovtsev AV. Multicenter polyester initiators for the synthesis of graft copolymers with oligo(2-ethyl-2-oxazoline) side chains. POLYMER SCIENCE SERIES B 2016. [DOI: 10.1134/s1560090416040059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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49
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Sun S, Wu P. Conformational changes in the heat-induced crystallization of poly(2-isopropyl-2-oxazoline) in the solid state. Phys Chem Chem Phys 2016; 17:31084-92. [PMID: 26535781 DOI: 10.1039/c5cp05719a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Poly(2-isopropyl-2-oxazoline) (PIPOZ) with an isomeric structure of poly(N-isopropylacrylamide) (PNIPAM) represents an important class of stimuli-responsive synthetic polymers. Unlike PNIPAM, PIPOZ exhibits an unusual heat-induced crystallization behaviour at around 120 °C in the solid state, whose dynamic mechanism involving all group motions and conformational changes is still poorly understood. In this paper, IR spectroscopy in combination with two-dimensional analysis methods - the perturbation correlation moving window (PCMW) and two-dimensional correlation spectroscopy (2DCOS) - was used to monitor and study the conformational changes in the crystallization of PIPOZ in the solid state. The incorporated water molecules are found to be not necessary to assist the solid-state crystallization of the PIPOZ film. PCMW and 2DCOS analyses reveal that following the breaking of minor CH3O[double bond, length as m-dash]C hydrogen bonds, all the group moieties exhibit highly synergetic motions during crystallization, and methylene groups on the backbone do not show significant changes throughout the crystallization process. Raman spectroscopic and molecular dynamics simulation results further support this conclusion. The chain alignment of PIPOZ chains is shown to be mainly achieved by the lateral distortion of coplanar side chains or the ordered chain arrangement of amide dipoles together with the torsion of the backbone through C-N linkages. Upon heating, gauche conformations of methylene groups on the backbone are always dominating, resulting in an ordered PIPOZ chain with alternate side chains and a slightly distorted backbone.
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Affiliation(s)
- Shengtong Sun
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science and Laboratory for Advanced Materials, Fudan University, Shanghai 200433, China. and State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China.
| | - Peiyi Wu
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science and Laboratory for Advanced Materials, Fudan University, Shanghai 200433, China.
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50
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Secker C, Völkel A, Tiersch B, Koetz J, Schlaad H. Thermo-Induced Aggregation and Crystallization of Block Copolypeptoids in Water. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02481] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Christian Secker
- Department
of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam, Germany
| | - Antje Völkel
- Department
of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam, Germany
| | - Brigitte Tiersch
- Institute
of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
| | - Joachim Koetz
- Institute
of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
| | - Helmut Schlaad
- Institute
of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
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