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Filipek K, Otulakowski Ł, Jelonek K, Utrata-Wesołek A. Degradable Nanogels Based on Poly[Oligo(Ethylene Glycol) Methacrylate] (POEGMA) Derivatives through Thermo-Induced Aggregation of Polymer Chain and Subsequent Chemical Crosslinking. Polymers (Basel) 2024; 16:1163. [PMID: 38675081 PMCID: PMC11054481 DOI: 10.3390/polym16081163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/17/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Polymer nanogels-considered as nanoscale hydrogel particles-are attractive for biological and biomedical applications due to their unique physicochemical flexibility. However, the aggregation or accumulation of nanoparticles in the body or the occurrence of the body's defense reactions still pose a research challenge. Here, we demonstrate the fabrication of degradable nanogels using thermoresponsive, cytocompatible poly[oligo(ethylene glycol) methacrylate]s-based copolymers (POEGMA). The combination of POEGMA's beneficial properties (switchable affinity to water, nontoxicity, non-immunogenicity) along with the possibility of nanogel degradation constitute an important approach from a biological point of view. The copolymers of oligo(ethylene glycol) methacrylates were partially modified with short segments of degradable oligo(lactic acid) (OLA) terminated with the acrylate group. Under the influence of temperature, copolymers formed self-assembled nanoparticles, so-called mesoglobules, with sizes of 140-1000 nm. The thermoresponsive behavior of the obtained copolymers and the nanostructure sizes depended on the heating rate and the presence of salts in the aqueous media. The obtained mesoglobules were stabilized by chemical crosslinking via thiol-acrylate Michael addition, leading to nanogels that degraded over time in water, as indicated by the DLS, cryo-TEM, and AFM measurements. Combining these findings with the lack of toxicity of the obtained systems towards human fibroblasts indicates their application potential.
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Affiliation(s)
| | | | | | - Alicja Utrata-Wesołek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland
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2
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Sánchez-Leija R, Mysona JA, de Pablo JJ, Nealey PF. Phase Behavior and Conformational Asymmetry near the Comb-to-Bottlebrush Transition in Linear-Brush Block Copolymers. Macromolecules 2024; 57:2019-2029. [PMID: 38495384 PMCID: PMC10938885 DOI: 10.1021/acs.macromol.3c02180] [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: 10/25/2023] [Revised: 01/26/2024] [Accepted: 02/05/2024] [Indexed: 03/19/2024]
Abstract
This study explores how conformational asymmetry influences the bulk phase behavior of linear-brush block copolymers. We synthesized 60 diblock copolymers composed of poly(trifluoroethyl methacrylate) as the linear block and poly[oligo(ethylene glycol) methyl ether methacrylate] as the brush block, varying the molecular weight, composition, and side-chain length to introduce different degrees of conformational asymmetry. Using small-angle X-ray scattering, we determined the morphology and phase diagrams for three different side-chain length systems, mainly observing lamellar and cylindrical phases. Increasing the side-chain length of the brush block from three to nine ethylene oxide units introduces sufficient asymmetry between the blocks to alter the phase behavior, shifting the lamellar-to-cylindrical transitions toward lower brush block compositions and transitioning the brush block from the dense comb-like regime to the bottlebrush regime. Coarse-grained simulations support our experimental observations and provide a mapping between the composition and conformational asymmetry. A comparison of our findings to strong stretching theory across multiple phase boundary predictions confirms the transition between the dense comb-like regime and the bottlebrush regime.
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Affiliation(s)
- Regina
J. Sánchez-Leija
- Materials
Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Lemont, Illinois 60439, United States
- Pritzker
School of Molecular Engineering, the University
of Chicago, 5640 S Ellis Avenue, Chicago, Illinois 60637, United States
| | - Joshua A. Mysona
- Materials
Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Lemont, Illinois 60439, United States
- Pritzker
School of Molecular Engineering, the University
of Chicago, 5640 S Ellis Avenue, Chicago, Illinois 60637, United States
| | - Juan J. de Pablo
- Materials
Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Lemont, Illinois 60439, United States
- Pritzker
School of Molecular Engineering, the University
of Chicago, 5640 S Ellis Avenue, Chicago, Illinois 60637, United States
| | - Paul F. Nealey
- Materials
Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Lemont, Illinois 60439, United States
- Pritzker
School of Molecular Engineering, the University
of Chicago, 5640 S Ellis Avenue, Chicago, Illinois 60637, United States
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3
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Lukáš Petrova S, Vragović M, Pavlova E, Černochová Z, Jäger A, Jäger E, Konefał R. Smart Poly(lactide)- b-poly(triethylene glycol methyl ether methacrylate) (PLA- b-PTEGMA) Block Copolymers: One-Pot Synthesis, Temperature Behavior, and Controlled Release of Paclitaxel. Pharmaceutics 2023; 15:pharmaceutics15041191. [PMID: 37111676 PMCID: PMC10143907 DOI: 10.3390/pharmaceutics15041191] [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: 03/08/2023] [Revised: 03/31/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
This paper introduces a new class of amphiphilic block copolymers created by combining two polymers: polylactic acid (PLA), a biocompatible and biodegradable hydrophobic polyester used for cargo encapsulation, and a hydrophilic polymer composed of oligo ethylene glycol chains (triethylene glycol methyl ether methacrylate, TEGMA), which provides stability and repellent properties with added thermo-responsiveness. The PLA-b-PTEGMA block copolymers were synthesized using ring-opening polymerization (ROP) and reversible addition-fragmentation chain transfer (RAFT) polymerization (ROP-RAFT), resulting in varying ratios between the hydrophobic and hydrophilic blocks. Standard techniques, such as size exclusion chromatography (SEC) and 1H NMR spectroscopy, were used to characterize the block copolymers, while 1H NMR spectroscopy, 2D nuclear Overhauser effect spectroscopy (NOESY), and dynamic light scattering (DLS) were used to analyze the effect of the hydrophobic PLA block on the LCST of the PTEGMA block in aqueous solutions. The results show that the LCST values for the block copolymers decreased with increasing PLA content in the copolymer. The selected block copolymer presented LCST transitions at physiologically relevant temperatures, making it suitable for manufacturing nanoparticles (NPs) and drug encapsulation-release of the chemotherapeutic paclitaxel (PTX) via temperature-triggered drug release mechanism. The drug release profile was found to be temperature-dependent, with PTX release being sustained at all tested conditions, but substantially accelerated at 37 and 40 °C compared to 25 °C. The NPs were stable under simulated physiological conditions. These findings demonstrate that the addition of hydrophobic monomers, such as PLA, can tune the LCST temperatures of thermo-responsive polymers, and that PLA-b-PTEGMA copolymers have great potential for use in drug and gene delivery systems via temperature-triggered drug release mechanisms in biomedicine applications.
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Affiliation(s)
- Svetlana Lukáš Petrova
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Martina Vragović
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Ewa Pavlova
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Zulfiya Černochová
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Alessandro Jäger
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Eliézer Jäger
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
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4
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Thermo and pH-Responsive Poly(DEGMA-co-OEGMA)-b-Poly(DEAEM) Synthesized by RAFT Polymerization and Its Self-Assembly Study. Macromol Res 2022. [DOI: 10.1007/s13233-022-0093-x] [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]
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5
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Wang Y, Tan X, Usman A, Zhang Y, Sawczyk M, Král P, Zhang C, Whittaker AK. Elucidating the Impact of Hydrophilic Segments on 19F MRI Sensitivity of Fluorinated Block Copolymers. ACS Macro Lett 2022; 11:1195-1201. [DOI: 10.1021/acsmacrolett.2c00414] [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)
- Yiqing Wang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Xiao Tan
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Adil Usman
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Yuhao Zhang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Michał Sawczyk
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Petr Král
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
- Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607, United States
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, Illinois 60612, United States
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Cheng Zhang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Andrew K. Whittaker
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, QLD 4072, Australia
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6
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Tan X, Sawczyk M, Chang Y, Wang Y, Usman A, Fu C, Král P, Peng H, Zhang C, Whittaker AK. Revealing the Molecular-Level Interactions between Cationic Fluorinated Polymer Sorbents and the Major PFAS Pollutant PFOA. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xiao Tan
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Michał Sawczyk
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Yixin Chang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Yiqing Wang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Adil Usman
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Changkui Fu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Petr Král
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
- Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607, United States
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Hui Peng
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Cheng Zhang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Andrew K. Whittaker
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, QLD 4072, Australia
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7
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Stimuli-responsive copolymeric hydrogels based on oligo(ethylene glycol) dimethacrylate for biomedical applications: An optimisation study of pH and thermoresponsive behaviour. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2021.105140] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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8
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Pang B, Yu Y, Zhang W. Thermoresponsive Polymers Based on Tertiary Amine Moieties. Macromol Rapid Commun 2021; 42:e2100504. [PMID: 34523742 DOI: 10.1002/marc.202100504] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/08/2021] [Indexed: 12/20/2022]
Abstract
Thermoresponsive polymers exhibiting unique reversible phase transition properties in aqueous solution in response to temperature stimuli have been extensively investigated. In the past two decades, thermoresponsive polymers based on tertiary amine moieties have achieved considerable progress and become an important family of thermoresponsive polymers, including tertiary amine functionalized poly((meth)acrylamide)s, poly((meth)acrylate)s, poly(styrene)s, poly(vinyl alcohol)s, and poly(ethylene oxide)s, which exhibit lower critical solution temperature and/or upper critical solution temperature in water or aliphatic alcohols. Their phase transition behavior can be modulated by the solution pH and CO2 due to the protonation of tertiary amine moieties in acidic condition and deprotonation in alkaline condition and the charged ammonium bicarbonate formed by the tertiary amine moieties and CO2 . The aim of this review is to summarize the recent progress in the thermoresponsive polymers based on tertiary amine moieties.
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Affiliation(s)
- Bo Pang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yuewen Yu
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
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9
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Swelling properties and drug release of new biocompatible POEGOPGMA hydrogels with VPTT near to the human body temperature. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-020-03217-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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10
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Tan X, Zhong J, Fu C, Dang H, Han Y, Král P, Guo J, Yuan Z, Peng H, Zhang C, Whittaker AK. Amphiphilic Perfluoropolyether Copolymers for the Effective Removal of Polyfluoroalkyl Substances from Aqueous Environments. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00096] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xiao Tan
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Jiexi Zhong
- Advanced Water Management Centre, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Changkui Fu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Huy Dang
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Yanxiao Han
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Petr Král
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
- Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607, United States
- Department of Biopharmaceutical Sciences, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Jianhua Guo
- Advanced Water Management Centre, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Zhiguo Yuan
- Advanced Water Management Centre, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Hui Peng
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Cheng Zhang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Andrew K. Whittaker
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
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11
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Usman A, Zhang C, Zhao J, Peng H, Kurniawan ND, Fu C, Hill DJT, Whittaker AK. Tuning the thermoresponsive properties of PEG-based fluorinated polymers and stimuli responsive drug release for switchable 19F magnetic resonance imaging. Polym Chem 2021. [DOI: 10.1039/d1py00602a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Switching on of the 19F MRI signal via stimuli-responsive release of hydrophobic drug from PEG-based partly-fluorinated polymers due to change in thermoresponsive properties.
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Affiliation(s)
- Adil Usman
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Cheng Zhang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Jiacheng Zhao
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Hui Peng
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Nyoman D. Kurniawan
- Centre for Advanced Imaging, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Changkui Fu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - David J. T. Hill
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Andrew K. Whittaker
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, QLD 4072, Australia
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12
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Liu X, Hou Y, Zhang Y, Zhang W. Thermoresponsive Polymers of Poly(2-( N-alkylacrylamide)ethyl acetate)s. Polymers (Basel) 2020; 12:E2464. [PMID: 33114303 PMCID: PMC7690893 DOI: 10.3390/polym12112464] [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: 09/29/2020] [Revised: 10/16/2020] [Accepted: 10/20/2020] [Indexed: 01/03/2023] Open
Abstract
Thermoresponsive poly(2-(N-alkylacrylamide) ethyl acetate)s with different N-alkyl groups, including poly(2-(N-methylacrylamide) ethyl acetate) (PNMAAEA), poly(2-(N-ethylacrylamide) ethyl acetate) (PNEAAEA), and poly(2-(N-propylacrylamide) ethyl acetate) (PNPAAEA), as well as poly(N-acetoxylethylacrylamide) (PNAEAA), were synthesized by solution RAFT polymerization. Unexpectedly, it was found that there are induction periods in the RAFT polymerization of these monomers, and the induction time correlates with the length of the N-alkyl groups in the monomers and follows the order of NAEAA < NMAAEA < NEAAEA < NPAAEA. The solubility of poly(2-(N-alkylacrylamide) ethyl acetate)s in water is also firmly dependent on the length of the N-alkyl groups. PNPAAEA including the largest N-propyl group is insoluble in water, whereas PNMAAEA and PNEAAEA are thermoresponsive in water and undergo the reversible soluble-to-insoluble transition at a critical solution temperature. The cloud point temperature (Tcp) of the thermoresponsive polymers is in the order of PNEAAEA < PNAEAA < PNMAAEA. The parameters affecting the Tcp of thermoresponsive polymers, e.g., degree of polymerization (DP), polymer concentration, salt, urea, and phenol, are investigated. Thermoresponsive PNMAAEA-b-PNEAAEA block copolymer and PNMAAEA-co-PNEAAEA random copolymers with different PNMAAEA and/or PNEAAEA fractions are synthesized, and their thermoresponse is checked.
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Affiliation(s)
- Xue Liu
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
| | - Yuwen Hou
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China;
| | - Yimin Zhang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China;
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13
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Naveed KUR, Wang L, Yu H, Teng L, Uddin MA, Fahad S, Ullah RS, Nazir A, Elshaarani T. Synthesis of spin labeled ethylene glycol based polymers and study of their segmental motion. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128528] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Zuppardi F, Malinconico M, D’Agosto F, D’Ayala GG, Cerruti P. Well-Defined Thermo-Responsive Copolymers Based on Oligo(Ethylene Glycol) Methacrylate and Pentafluorostyrene for the Removal of Organic Dyes from Water. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1779. [PMID: 32911815 PMCID: PMC7558912 DOI: 10.3390/nano10091779] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/02/2020] [Accepted: 09/04/2020] [Indexed: 02/01/2023]
Abstract
Thermo-responsive copolymers based on oligo(ethylene glycol) methacrylate (OEGMA, Mn = 300 g/mol) and pentafluorostyrene (PFS), coded PFG, were synthesized by RAFT polymerization, using a trithiocarbonate (CTTPC) as controlling agent. Different molar masses were targeted and dispersities lower than 1.51 were obtained. The thermally triggered self-assembly of the resulting PFG copolymers in water was investigated by dynamic light scattering (DLS). The lower critical solution temperature (LCST) slightly increased with the molecular weight in the 26-30 °C temperature range, whereas the sizes of the intermicellar aggregates formed upon self-assembly tended to decrease with increasing molecular weights (ranging from 1415 to 572 nm). The resulting thermally-induced polymer aggregates were then used to encapsulate and remove organic contaminants from water. Nile Red (NR) and Thiazole yellow G (TYG) were employed as hydrophobic and hydrophilic model contaminants, respectively. Experimental results evidenced that higher molecular weight copolymers removed up to 90% of NR from aqueous solution, corresponding to about 10 mg of dye per g of copolymer, regardless of NR concentration. The removal of TYG was lower with respect to NR, decreasing from about 40% to around 20% with TYG concentration. Finally, the copolymers were shown to be potentially recycled and reused in the treatment of contaminated water.
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Affiliation(s)
- Federica Zuppardi
- Institute for Polymers, Composites and Biomaterials (IPCB-CNR), 80078 Pozzuoli, Italy; (F.Z.); (M.M.); (P.C.)
| | - Mario Malinconico
- Institute for Polymers, Composites and Biomaterials (IPCB-CNR), 80078 Pozzuoli, Italy; (F.Z.); (M.M.); (P.C.)
| | - Franck D’Agosto
- CPE Lyon, CNRS, UMR 5265, Chemistry, Catalysis, Polymers and Processes (C2P2), Université Claude Bernard Lyon 1, 69616 Villeurbanne, France;
| | - Giovanna Gomez D’Ayala
- Institute for Polymers, Composites and Biomaterials (IPCB-CNR), 80078 Pozzuoli, Italy; (F.Z.); (M.M.); (P.C.)
| | - Pierfrancesco Cerruti
- Institute for Polymers, Composites and Biomaterials (IPCB-CNR), 80078 Pozzuoli, Italy; (F.Z.); (M.M.); (P.C.)
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16
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Abstract
Stimulus-responsive polymers have been used in improving the efficacy of medical diagnostics through different approaches including enhancing the contrast in imaging techniques and promoting the molecular recognition in diagnostic assays. This review overviews the mechanisms of stimulus-responsive polymers in response to external stimuli including temperature, pH, ion, light, etc. The applications of responsive polymers in magnetic resonance imaging, capture and purification of biomolecules through protein-ligand recognition and lab-on-a-chip technology are discussed.
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Affiliation(s)
- Divambal Appavoo
- NanoScience Technology Center, Department of Materials Science and Engineering, Department of Chemistry, University of Central Florida, FL 32826, USA.
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17
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Konefał R, Spěváček J, Mužíková G, Laga R. Thermoresponsive behavior of poly(DEGMA)-based copolymers. NMR and dynamic light scattering study of aqueous solutions. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109488] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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18
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Jiang Z, Diggle B, Shackleford ICG, Connal LA. Tough, Self-Healing Hydrogels Capable of Ultrafast Shape Changing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1904956. [PMID: 31608513 DOI: 10.1002/adma.201904956] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/24/2019] [Indexed: 06/10/2023]
Abstract
Achieving multifunctional shape-changing hydrogels with synergistic and engineered material properties is highly desirable for their expanding applications, yet remains an ongoing challenge. The synergistic design of multiple dynamic chemistries enables new directions for the development of such materials. Herein, a molecular design strategy is proposed based on a hydrogel combining acid-ether hydrogen bonding and imine bonds. This approach utilizes simple and scalable chemistries to produce a doubly dynamic hydrogel network, which features high water uptake, high strength and toughness, excellent fatigue resistance, fast and efficient self-healing, and superfast, programmable shape changing. Furthermore, deformed shapes can be memorized due to the large thermal hysteresis. This new type of shape-changing hydrogel is expected to be a key component in future biomedical, tissue, and soft robotic device applications.
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Affiliation(s)
- Zhen Jiang
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - Broden Diggle
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - India C G Shackleford
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - Luke A Connal
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
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19
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Suljovrujic E, Miladinovic ZR, Micic M, Suljovrujic D, Milicevic D. The influence of monomer/solvent feed ratio on POEGDMA thermoresponsive hydrogels: Radiation-induced synthesis, swelling properties and VPTT. Radiat Phys Chem Oxf Engl 1993 2019. [DOI: 10.1016/j.radphyschem.2018.12.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Dalgakiran E, Tatlipinar H. A Computational Study on the LCST Phase Transition of a POEGMA Type Thermoresponsive Block Copolymer: Effect of Water Ordering and Individual Behavior of Blocks. J Phys Chem B 2019; 123:1283-1293. [DOI: 10.1021/acs.jpcb.8b11775] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eray Dalgakiran
- Department of Physics, Faculty of Arts and Sciences, Yildiz Technical University, 34220, Istanbul, Turkey
| | - Hasan Tatlipinar
- Department of Physics, Faculty of Arts and Sciences, Yildiz Technical University, 34220, Istanbul, Turkey
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21
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Zhang C, Sanchez RJP, Fu C, Clayden-Zabik R, Peng H, Kempe K, Whittaker AK. Importance of Thermally Induced Aggregation on 19F Magnetic Resonance Imaging of Perfluoropolyether-Based Comb-Shaped Poly(2-oxazoline)s. Biomacromolecules 2018; 20:365-374. [DOI: 10.1021/acs.biomac.8b01549] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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22
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Zhang C, Moonshi SS, Wang W, Ta HT, Han Y, Han FY, Peng H, Král P, Rolfe BE, Gooding JJ, Gaus K, Whittaker AK. High F-Content Perfluoropolyether-Based Nanoparticles for Targeted Detection of Breast Cancer by 19F Magnetic Resonance and Optical Imaging. ACS NANO 2018; 12:9162-9176. [PMID: 30118590 DOI: 10.1021/acsnano.8b03726] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Two important challenges in the field of 19F magnetic resonance imaging (MRI) are the maintenance of high fluorine content without compromising imaging performance, and effective targeting of small particles to diseased tissue. To address these challenges, we have developed a series of perfluoropolyether (PFPE)-based hyperbranched (HBPFPE) nanoparticles with attached peptide aptamer as targeting ligands for specific in vivo detection of breast cancer with high 19F MRI sensitivity. A detailed comparison of the HBPFPE nanoparticles (NPs) with the previously reported trifluoroethyl acrylate (TFEA)-based polymers demonstrates that the mobility of fluorinated segments of the HBPFPE nanoparticles is significantly enhanced (19F T2 > 80 ms vs 31 ms), resulting in superior MR imaging sensitivity. Selective targeting was confirmed by auto- and pair correlation analysis of fluorescence microscopy data, in vitro immunofluorescence, in vivo 19F MRI, ex vivo fluorescence and 19F NMR. The results highlight the high efficiency of aptamers for targeting and the excellent sensitivity of the PFPE moieties for 19F MRI. Of relevance to in vivo applications, the PFPE-based polymers exhibit much faster clearance from the body than the previously introduced perfluorocarbon emulsions ( t1/2 ∼ 20 h vs up to months). Moreover, the aptamer-conjugated NPs show significantly higher tumor-penetration, demonstrating the potential of these imaging agents for therapeutic applications. This report of the synthesis of polymeric aptamer-conjugated PFPE-based 19F MRI CAs with high fluorine content (∼10 wt %) demonstrates that these NPs are exciting candidates for detecting diseases with high imaging sensitivity.
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Affiliation(s)
| | | | | | | | | | - Felicity Y Han
- Centre for Integrated Preclinical Drug Development , The University of Queensland , Brisbane , Qld 4072 , Australia
| | | | - Petr Král
- Department of Biopharmaceutical Sciences , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
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23
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Murdoch TJ, Humphreys BA, Johnson EC, Webber GB, Wanless EJ. Specific ion effects on thermoresponsive polymer brushes: Comparison to other architectures. J Colloid Interface Sci 2018; 526:429-450. [DOI: 10.1016/j.jcis.2018.04.086] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/20/2018] [Accepted: 04/23/2018] [Indexed: 02/06/2023]
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24
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Moonshi SS, Zhang C, Peng H, Puttick S, Rose S, Fisk NM, Bhakoo K, Stringer BW, Qiao GG, Gurr PA, Whittaker AK. A unique 19F MRI agent for the tracking of non phagocytic cells in vivo. NANOSCALE 2018; 10:8226-8239. [PMID: 29682654 DOI: 10.1039/c8nr00703a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
There is currently intense interest in new methods for understanding the fate of therapeutically-relevant cells, such as mesenchymal stem cells (MSCs). The absence of a confounding background signal and consequent unequivocal assignment makes 19F MRI one of the most attractive modalities for the tracking of injected cells in vivo. We describe here the synthesis of novel partly-fluorinated polymeric nanoparticles with small size and high fluorine content as MRI agents. The polymers, constructed from perfluoropolyether methacrylate (PFPEMA) and oligo(ethylene glycol) methacrylate (OEGMA) have favourable cell uptake profiles and excellent MRI performance. To facilitate cell studies the polymer was further conjugated with a fluorescent dye creating a dual-modal imaging agent. The efficacy of labelling of MSCs was assessed using 19F NMR, flow cytometry and confocal microscopy. The labelling efficiency of 2.6 ± 0.1 × 1012 19F atoms per cell, and viability of >90% demonstrates high uptake and good tolerance by the cells. This loading translates to a minimum 19F MRI detection sensitivity of ∼7.4 × 103 cells per voxel. Importantly, preliminary in vivo data demonstrate that labelled cells can be readily detected within a short acquisition scan period (12 minutes). Hence, these copolymers show outstanding potential for 19F MRI cellular tracking and for quantification of non-phagocytic and therapeutically-relevant cells in vivo.
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Affiliation(s)
- Shehzahdi S Moonshi
- Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, QLD 4072, Australia.
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25
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Eggers S, Eckert T, Abetz V. Double thermoresponsive block-random copolymers with adjustable phase transition temperatures: From block-like to gradient-like behavior. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28906] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Steffen Eggers
- Department of Physical Chemistry; University of Hamburg, Grindelallee 117; Hamburg 20146 Germany
| | - Tilman Eckert
- Department of Physical Chemistry; University of Hamburg, Grindelallee 117; Hamburg 20146 Germany
| | - Volker Abetz
- Department of Physical Chemistry; University of Hamburg, Grindelallee 117; Hamburg 20146 Germany
- Helmholtz-Zentrum Geesthacht, Institute of Polymer Research, Max-Planck-Straße 1; Geesthacht 21502 Germany
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26
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Zhang C, Moonshi SS, Han Y, Puttick S, Peng H, Magoling BJA, Reid JC, Bernardi S, Searles DJ, Král P, Whittaker AK. PFPE-Based Polymeric 19F MRI Agents: A New Class of Contrast Agents with Outstanding Sensitivity. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01285] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Cheng Zhang
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of
Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Shehzahdi Shebbrin Moonshi
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of
Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | | | - Simon Puttick
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of
Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Hui Peng
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of
Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Bryan John Abel Magoling
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - James C. Reid
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Stefano Bernardi
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Debra J. Searles
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Qld 4072, Australia
- School
of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Petr Král
- Department
of Biopharmaceutical Sciences, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Andrew K. Whittaker
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of
Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
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27
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Zhao W, Ta HT, Zhang C, Whittaker AK. Polymerization-Induced Self-Assembly (PISA) - Control over the Morphology of 19F-Containing Polymeric Nano-objects for Cell Uptake and Tracking. Biomacromolecules 2017; 18:1145-1156. [DOI: 10.1021/acs.biomac.6b01788] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Zhao
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, St. Lucia, Queensland 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Brisbane, Queensland 4072, Australia
| | - Hang T. Ta
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, St. Lucia, Queensland 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Brisbane, Queensland 4072, Australia
| | - Cheng Zhang
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, St. Lucia, Queensland 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Brisbane, Queensland 4072, Australia
| | - Andrew K. Whittaker
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, St. Lucia, Queensland 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Brisbane, Queensland 4072, Australia
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28
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29
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Zuppardi F, Chiacchio FR, Sammarco R, Malinconico M, Gomez d'Ayala G, Cerruti P. Fluorinated oligo(ethylene glycol) methacrylate-based copolymers: Tuning of self assembly properties and relationship with rheological behavior. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.01.080] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Jiang Z, Blakey I, Whittaker AK. Aqueous solution behaviour of novel water-soluble amphiphilic copolymers with elevated hydrophobic unit content. Polym Chem 2017. [DOI: 10.1039/c7py00832e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and aqueous solution behaviour of water-soluble copolymers poly(OEGMA-stat-styrene)-b-PDMAPMA with a relatively high content of styrene units were explored.
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Affiliation(s)
- Zhen Jiang
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- St Lucia
- Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
| | - Idriss Blakey
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- St Lucia
- Australia
- Centre for Advanced Imaging
| | - Andrew K. Whittaker
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- St Lucia
- Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
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31
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Zhang C, Moonshi SS, Peng H, Puttick S, Reid J, Bernardi S, Searles DJ, Whittaker AK. Ion-Responsive 19F MRI Contrast Agents for the Detection of Cancer Cells. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00216] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Cheng Zhang
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Shehzahdi Shebbrin Moonshi
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Hui Peng
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Simon Puttick
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | | | | | | | - Andrew K. Whittaker
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
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32
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Saito N, Kobayashi H, Yamaguchi M. "Inverse" thermoresponse: heat-induced double-helix formation of an ethynylhelicene oligomer with tri(ethylene glycol) termini. Chem Sci 2016; 7:3574-3580. [PMID: 29997850 PMCID: PMC6007355 DOI: 10.1039/c5sc04959h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 02/12/2016] [Indexed: 02/05/2023] Open
Abstract
Ethynylhelicene oligomers with TEG terminal groups showed a unique thermoresponse in aqueous solvents: double-helix formation upon heating and disaggregation upon cooling.
An ethynylhelicene oligomer [(M)-d-4]-C12-TEG with six tri(ethylene glycol) (TEG) groups at the termini was synthesized, and double-helix formation was studied using CD, UV-Vis, vapor pressure osmometry, dynamic light scattering, and 1H NMR. [(M)-d-4]-C12-TEG reversibly changed its structure between a double helix and a random coil in response to heating and cooling in aromatic solvents, non-aromatic polar organic solvents, and aqueous solvent mixtures of acetone/water/triethylamine. Notably, [(M)-d-4]-C12-TEG in acetone/water/triethylamine (1/2/1) formed a double helix upon heating and disaggregated into random coils upon cooling. The double helix/random coil ratio sharply changed in response to temperature changes. This is an unprecedented “inverse” thermoresponse, which is opposite to the “ordinary” thermoresponse in molecular dimeric aggregate formation. This phenomenon was explained by the dehydration of the terminal TEG groups and the formation of condensed triethylamine domains upon heating.
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Affiliation(s)
- Nozomi Saito
- Department of Organic Chemistry , Graduate School of Pharmaceutical Sciences , Tohoku University , Sendai , Japan . .,Tohoku University Frontier Research Institute for Interdisciplinary Science , Sendai , Japan
| | - Higashi Kobayashi
- Department of Organic Chemistry , Graduate School of Pharmaceutical Sciences , Tohoku University , Sendai , Japan .
| | - Masahiko Yamaguchi
- Department of Organic Chemistry , Graduate School of Pharmaceutical Sciences , Tohoku University , Sendai , Japan .
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33
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Zhang C, Peng H, Li W, Liu L, Puttick S, Reid J, Bernardi S, Searles DJ, Zhang A, Whittaker AK. Conformation Transitions of Thermoresponsive Dendronized Polymers across the Lower Critical Solution Temperature. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02414] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cheng Zhang
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Hui Peng
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Wen Li
- Department
of Polymer Materials, Shanghai University, Shangda Street 99, Mailbox 152, Shanghai 200444, China
| | - Lianxiao Liu
- Department
of Polymer Materials, Shanghai University, Shangda Street 99, Mailbox 152, Shanghai 200444, China
| | - Simon Puttick
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | | | | | | | - Afang Zhang
- Department
of Polymer Materials, Shanghai University, Shangda Street 99, Mailbox 152, Shanghai 200444, China
| | - Andrew K. Whittaker
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
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34
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Wang K, Peng H, Thurecht KJ, Puttick S, Whittaker AK. Multifunctional hyperbranched polymers for CT/19F MRI bimodal molecular imaging. Polym Chem 2016. [DOI: 10.1039/c5py01707f] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multifunctional hyperbranched polymers containing iodine and fluorine were synthesised by reversible addition–fragmentation chain transfer (RAFT) polymerisation, and evaluated as novel contrast agents for CT/19F MRI bimodal molecular imaging.
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Affiliation(s)
- Kewei Wang
- Australian Institute for Bioengineering and Nanotechnology
- Centre for Advanced Imaging
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
- The University of Queensland
- St. Lucia
| | - Hui Peng
- Australian Institute for Bioengineering and Nanotechnology
- Centre for Advanced Imaging
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
- The University of Queensland
- St. Lucia
| | - Kristofer J. Thurecht
- Australian Institute for Bioengineering and Nanotechnology
- Centre for Advanced Imaging
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
- The University of Queensland
- St. Lucia
| | - Simon Puttick
- Australian Institute for Bioengineering and Nanotechnology
- Centre for Advanced Imaging
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
- The University of Queensland
- St. Lucia
| | - Andrew K. Whittaker
- Australian Institute for Bioengineering and Nanotechnology
- Centre for Advanced Imaging
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
- The University of Queensland
- St. Lucia
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35
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Wang K, Peng H, Thurecht KJ, Puttick S, Whittaker AK. Segmented Highly Branched Copolymers: Rationally Designed Macromolecules for Improved and Tunable 19F MRI. Biomacromolecules 2015. [DOI: 10.1021/acs.biomac.5b00800] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Kewei Wang
- Australian Institute for
Bioengineering and Nanotechnology; Centre for Advanced Imaging; ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Hui Peng
- Australian Institute for
Bioengineering and Nanotechnology; Centre for Advanced Imaging; ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Kristofer J. Thurecht
- Australian Institute for
Bioengineering and Nanotechnology; Centre for Advanced Imaging; ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Simon Puttick
- Australian Institute for
Bioengineering and Nanotechnology; Centre for Advanced Imaging; ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Andrew K. Whittaker
- Australian Institute for
Bioengineering and Nanotechnology; Centre for Advanced Imaging; ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St. Lucia, Queensland 4072, Australia
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36
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Chen A, Blakey I, Jack KS, Whittaker AK, Peng H. Control through monomer placement of surface properties and morphology of fluoromethacrylate copolymers. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27731] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ao Chen
- Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; Brisbane Queensland 4072 Australia
| | - Idriss Blakey
- Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; Brisbane Queensland 4072 Australia
- Centre for Advanced Imaging; The University of Queensland; Brisbane Queensland 4072 Australia
| | - Kevin S. Jack
- Centre for Microscopy and Microanalysis; The University of Queensland; Brisbane Queensland 4072 Australia
| | - Andrew K. Whittaker
- Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; Brisbane Queensland 4072 Australia
- Centre for Advanced Imaging; The University of Queensland; Brisbane Queensland 4072 Australia
- Australian Research Council Centre of Excellence for Convergent Bio-Nano Science and Technology
| | - Hui Peng
- Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; Brisbane Queensland 4072 Australia
- Australian Research Council Centre of Excellence for Convergent Bio-Nano Science and Technology
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37
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Zhang C, Peng H, Puttick S, Reid J, Bernardi S, Searles DJ, Whittaker AK. Conformation of Hydrophobically Modified Thermoresponsive Poly(OEGMA-co-TFEA) across the LCST Revealed by NMR and Molecular Dynamics Studies. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00641] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Cheng Zhang
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Hui Peng
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Simon Puttick
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - James Reid
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Stefano Bernardi
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Debra J. Searles
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Andrew K. Whittaker
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
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