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Fang G, Wang Q, Yang X, Qian Y, Zhang G, Tang B. γ-Cyclodextrin-based polypseudorotaxane hydrogels for ophthalmic delivery of flurbiprofen to treat anterior uveitis. Carbohydr Polym 2022; 277:118889. [PMID: 34893291 DOI: 10.1016/j.carbpol.2021.118889] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 11/04/2021] [Accepted: 11/10/2021] [Indexed: 12/20/2022]
Abstract
Anterior uveitis is a sight-threatening inflammation inside the eyes. Conventional eye drops for anti-inflammatory therapy need to be administered frequently owing to the rapid elimination and corneal barrier. To address these issues, polypseudorotaxane hydrogels were developed by mixing Soluplus micelles (99.4 nm) and cyclodextrins solution. The optimized hydrogels exhibited shear-thinning and sustained release properties. The hydrogels exhibited higher transcorneal permeability coefficient (Papp, 1.84 folds) than that of drug solutions. Moreover, animal study indicated that the hydrogels significantly increased the precorneal retention (AUC, 21.2 folds) and intraocular bioavailability of flurbiprofen (AUCAqueous humor, 17.8 folds) in comparison with drug solutions. Importantly, the hydrogels obviously boosted anti-inflammatory efficacy in rabbit model of endotoxin-induced uveitis at a reduced administration frequency. Additionally, the safety of hydrogels was confirmed by cytotoxicity and ocular irritation studies. In all, the present study demonstrates a friendly non-invasive strategy based on γ-CD-based polypseudorotaxane hydrogels for ocular drug delivery.
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Affiliation(s)
- Guihua Fang
- School of Pharmacy, Jiangsu Key Laboratory of Inflammation and Molecular Drug Targets, Nantong University, Nantong, Jiangsu Province 226001, China
| | - Qiuxiang Wang
- School of Pharmacy, Jiangsu Key Laboratory of Inflammation and Molecular Drug Targets, Nantong University, Nantong, Jiangsu Province 226001, China
| | - Xuewen Yang
- School of Pharmacy, Jiangsu Key Laboratory of Inflammation and Molecular Drug Targets, Nantong University, Nantong, Jiangsu Province 226001, China
| | - Yu Qian
- School of Pharmacy, Jiangsu Key Laboratory of Inflammation and Molecular Drug Targets, Nantong University, Nantong, Jiangsu Province 226001, China
| | - Guowei Zhang
- Eye Institute, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Bo Tang
- School of Pharmacy, Jiangsu Key Laboratory of Inflammation and Molecular Drug Targets, Nantong University, Nantong, Jiangsu Province 226001, China.
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Guembe-Michel N, Durán A, Sirera R, González-Gaitano G. Solvent-Free Formation of Cyclodextrin-Based Pseudopolyrotaxanes of Polyethylene Glycol: Kinetic and Structural Aspects. Int J Mol Sci 2022; 23:ijms23020685. [PMID: 35054867 PMCID: PMC8775932 DOI: 10.3390/ijms23020685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/03/2022] [Accepted: 01/05/2022] [Indexed: 01/27/2023] Open
Abstract
Pseudopolyrotaxanes (PPRs) are supramolecular structures consisting of macrocycles able to thread on a linear polymer chain in a reversible, non-covalent way, often referred to in the literature as “molecular necklaces”. While the synthesis and reaction mechanisms of these structures in solution have been widely described, their solvent-free production has received little attention, despite the advantages that this route may offer. We propose in this work a kinetic mechanism that describes the PPR formation in the solid phase as a process occurring in two consecutive stages. This mechanism has been used to investigate the spontaneous formation of a PPR that occurs when grinding α-Cyclodextrin (α-CD) with polyethylene glycol (PEG). In the threading stage, the inclusion of the polymer and subsequent release of the water molecules lodged in the cavity of the macrocycle cause vibrational changes that are reflected in the time-dependence of the FTIR-ATR spectra, while the further assembly of PPRs to form crystals produces characteristic reflections in the XRD patterns, due to the channel-like arrangement of CDs, that can be used to track the formation of the adduct in crystalline form. The effects that working variables have on the kinetics of the reaction, such as temperature, feed ratio, molar mass of the polymer and the introduction of an amorphous block in the polymer structure, have been investigated. The rate constants of the threading step increase with the temperature and the activation energy of the process increases at lower proportions of CD to PEG. This is attributed to the lower degree of covering of the polymer chain with CDs that reduces the hydrogen-bonding driven stabilization between adjacent macrocycles. The formation of crystalline PPR, which takes place slowly at room temperature, is markedly promoted at higher temperatures, with lower proportions of CD favoring both the formation and the growth of the crystals. The molar mass of the polymer does not modify the typical channel-like arrangement of packed PPRs but the conversion into crystalline PPR diminishes when using PEG1000 instead of PEG400. At a microscopic level, the crystals arrange into lamellar structures, in the order of hundreds of nm, embedded in an amorphous-like matrix. The introduction of a polypropylene oxide block in the structure of the polymer (Pluronic L62) renders poorer yields and a considerable loss of crystallinity of the product of the reaction. The methodology here proposed can be applied to the general case of inclusion complexes of CDs with drugs in the solid phase, or to multicomponent systems that contain polymers as excipients in pharmaceutical formulations along with CDs.
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Liow SS, Zhou H, Sugiarto S, Guo S, Chalasani MLS, Verma NK, Xu J, Loh XJ. Highly Efficient Supramolecular Aggregation-Induced Emission-Active Pseudorotaxane Luminogen for Functional Bioimaging. Biomacromolecules 2017; 18:886-897. [DOI: 10.1021/acs.biomac.6b01777] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sing Shy Liow
- Institute of Materials
Research and Engineering (IMRE), 2
Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore
| | - Hui Zhou
- Institute of Materials
Research and Engineering (IMRE), 2
Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore
| | - Sigit Sugiarto
- Institute of Materials
Research and Engineering (IMRE), 2
Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore
| | - Shifeng Guo
- Institute of Materials
Research and Engineering (IMRE), 2
Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore
| | - Madhavi Latha S. Chalasani
- Lee
Kong Chian School of Medicine, Nanyang Technological University, Experimental
Medicine Building, Singapore 636921, Singapore
| | - Navin Kumar Verma
- Lee
Kong Chian School of Medicine, Nanyang Technological University, Experimental
Medicine Building, Singapore 636921, Singapore
- Singapore Eye
Research Institute, 11 Third Hospital
Avenue, The Academia, 20 College Road, Singapore 168751, Singapore
| | - Jianwei Xu
- Institute of Materials
Research and Engineering (IMRE), 2
Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore
| | - Xian Jun Loh
- Institute of Materials
Research and Engineering (IMRE), 2
Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore
- Singapore Eye
Research Institute, 11 Third Hospital
Avenue, The Academia, 20 College Road, Singapore 168751, Singapore
- Department
of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
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Takahashi S, Yamada NL, Ito K, Yokoyama H. Inclusion Complex of α-Cyclodextrin with Poly(ethylene glycol) Brush. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01238] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shoko Takahashi
- Graduate
School of Frontier Sciences, The University of Tokyo, Chiba 277-8561, Japan
| | | | - Kohzo Ito
- Graduate
School of Frontier Sciences, The University of Tokyo, Chiba 277-8561, Japan
| | - Hideaki Yokoyama
- Graduate
School of Frontier Sciences, The University of Tokyo, Chiba 277-8561, Japan
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5
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Shih KC, Li CY, Li WH, Lai HM. Fine structures of self-assembled beta-cyclodextrin/Pluronic in dilute and dense systems: a small angle X-ray scattering study. SOFT MATTER 2014; 10:7606-7614. [PMID: 25121472 DOI: 10.1039/c4sm01147c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The evolution of the fine structures of self-assembled polypseudorotaxane (PPR) in Pluronic (PL F108) solutions containing dilute to dense beta-cyclodextrin (β-CD) was illustrated for the first time by small angle X-ray scattering (SAXS). Dense β-CD (∼19 w/v%) was found feasible to be dispersed in 24% citric acid solution. 5% of PL F108 formed cylindrical micelles of 1 nm in radius and 8 nm in length in the presence of 24% citric acid through the dehydration of citric acid and citrate. PPR was formed through host-guest interaction between PL F108 and β-CD. In dilute β-CD system (1%), the single chains of PPR with separated β-CD stacks on PL F108 were formed. The numbers of β-CD in each stack increased from 1 to 4 on increasing β-CD concentration to 9%. In a dense β-CD system, PPR condensed to correlated structures majorly composed of two unit blocks through the hydrogen bonds between PPRs. Two distinguishable correlated domains with correlation lengths of 50 nm (marked α-phase) and 46 nm (marked β-phase) along the chains, but without fine periodic structure within each individual domain, were identified in the 10% β-CD solution. Periodic stacking of β-CD in the domains developed in the 12% solution. As β-CD concentration increased from 12 to 19%, the correlated heights of α and β phases reduced from 41 and 32 nm to 30 and 10 nm, respectively. There were 48 β-CDs that stabilized on each PL F108 chain in the 19% β-CD system, which is in good agreement with stoichiometry.
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Affiliation(s)
- Kuo-Chih Shih
- Department of Agricultural Chemistry, National Taiwan University, No. 1, Roosevelt Rd., Sec. 4, Taipei 10617, Taiwan.
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Staelens N, Leherte L, Vercauteren DP. Formation and structural, energetic and dynamic properties of cyclodextrin host tubes and included guest molecules. Supramol Chem 2014. [DOI: 10.1080/10610278.2014.910602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Nicolas Staelens
- Laboratoire de Physico-Chimie Informatique (PCI), Unité de Chimie Physique Théorique et Structurale (UCPTS), Université de Namur, Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Laurence Leherte
- Laboratoire de Physico-Chimie Informatique (PCI), Unité de Chimie Physique Théorique et Structurale (UCPTS), Université de Namur, Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Daniel P. Vercauteren
- Laboratoire de Physico-Chimie Informatique (PCI), Unité de Chimie Physique Théorique et Structurale (UCPTS), Université de Namur, Rue de Bruxelles 61, 5000 Namur, Belgium
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Tardy BL, Dam HH, Kamphuis MMJ, Richardson JJ, Caruso F. Self-assembled stimuli-responsive polyrotaxane core-shell particles. Biomacromolecules 2013; 15:53-9. [PMID: 24328262 DOI: 10.1021/bm401244a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Thermodynamically assembled core-shell nanocarriers are potential candidates for drug delivery applications due to their submicrometer size and the ability to load drugs into their hydrophobic core. Herein, we describe the formation of core-shell particles that consist of noncovalent polymers, that is, polyrotaxanes (PRXs), that form an α-cyclodextrin (αCD) core surrounded by a corona of low-fouling poly(ethylene glycol) (PEG). The PRX core-shell particles are able to sequester small organic molecules, such as pyrene and calcein, releasing these small molecules during degradation. The small, cellular peptide, glutathione, was used to degrade the particles through the reductive cleavage of disulfide bonds that stabilize the individual PRX polymers. Cleavage of a single bond allows for the degradation of the supramolecular-polymer, making these PRX core-shell particles highly responsive. Furthermore, these particles demonstrate negligible cytotoxicity in mammalian cells, making them promising carriers for future drug delivery research.
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Affiliation(s)
- Blaise L Tardy
- Department of Chemical and Biomolecular Engineering, The University of Melbourne , Victoria 3010, Australia
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8
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He J. Effects of several inter-molecular interactions on the inclusion between methyl substituted β-cyclodextrin and some linear macromolecule in supercritical carbon dioxide medium. J INCL PHENOM MACRO 2011. [DOI: 10.1007/s10847-011-0047-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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9
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Sakai Y, Ueda K, Katsuyama N, Shimizu K, Sato S, Kuroiwa J, Araki J, Teramoto A, Abe K, Yokoyama H, Ito K. Fabrication and structural analysis of polyrotaxane fibers and films. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:284108. [PMID: 21709323 DOI: 10.1088/0953-8984/23/28/284108] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Polyrotaxane (PR), a typical example of topological supramolecular architecture, consists of multiple cyclic molecules threaded onto a linear polymer backbone and capped with bulky end-groups. The PR system of polyethylene glycol and α-cyclodextrin (α-CD) has been extensively studied for its facile synthesis, unique molecular structure, and possible applications for various smart materials. We have previously demonstrated the fabrication of PR-based fibers without chemical cross-links by wet spinning of PR solution. In this paper, we investigate the crystal structure of α-CDs in PR fibers and the effect of drawing on it. The α-CDs in PR fiber are found to form hexagonal channel-type structure. The drawing process promotes formation of the packing arrangement of α-CDs in the c-axis because of the sliding of α-CD molecules along the polymer backbone. In addition, we demonstrate the preparation of an elastomeric PR film having similar network structure to the fibers and ethylene glycol oligomer as plasticizer.
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Affiliation(s)
- Yasuhiro Sakai
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan.
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10
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Constrained polymer chain behavior observed in their non-stoichiometric cyclodextrin inclusion complexes. J INCL PHENOM MACRO 2011. [DOI: 10.1007/s10847-011-9940-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Guerrero-Martínez A, Ávila D, J. Martínez-Casado F, Ripmeester JA, Enright GD, Cola LD, Tardajos G. Solid Crystal Network of Self-Assembled Cyclodextrin and Nonionic Surfactant Pseudorotaxanes. J Phys Chem B 2010; 114:11489-95. [DOI: 10.1021/jp105808j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andrés Guerrero-Martínez
- Physikalisches Institut, Wesfälische Wilhelms Universität Münster, Mendelstrasse 7, D-48149 Münster, Germany, Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, and Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, Canada
| | - David Ávila
- Physikalisches Institut, Wesfälische Wilhelms Universität Münster, Mendelstrasse 7, D-48149 Münster, Germany, Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, and Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, Canada
| | - Francisco J. Martínez-Casado
- Physikalisches Institut, Wesfälische Wilhelms Universität Münster, Mendelstrasse 7, D-48149 Münster, Germany, Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, and Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, Canada
| | - John A. Ripmeester
- Physikalisches Institut, Wesfälische Wilhelms Universität Münster, Mendelstrasse 7, D-48149 Münster, Germany, Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, and Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, Canada
| | - Gary D. Enright
- Physikalisches Institut, Wesfälische Wilhelms Universität Münster, Mendelstrasse 7, D-48149 Münster, Germany, Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, and Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, Canada
| | - Luisa De Cola
- Physikalisches Institut, Wesfälische Wilhelms Universität Münster, Mendelstrasse 7, D-48149 Münster, Germany, Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, and Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, Canada
| | - Gloria Tardajos
- Physikalisches Institut, Wesfälische Wilhelms Universität Münster, Mendelstrasse 7, D-48149 Münster, Germany, Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain, and Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, Canada
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Travelet C, Schlatter G, Hébraud P, Brochon C, Anokhin DV, Ivanov DA, Hadziioannou G. Physical Gels Based on Polyrotaxanes: Kinetics of the Gelation, and Relative Contributions of α-Cyclodextrin and Poly(ethylene oxide) to the Gel Cohesion. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/masy.201050524] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Inomata A, Sakai Y, Zhao C, Ruslim C, Shinohara Y, Yokoyama H, Amemiya Y, Ito K. Crystallinity and Cooperative Motions of Cyclic Molecules in Partially Threaded Solid-State Polyrotaxanes. Macromolecules 2010. [DOI: 10.1021/ma100259t] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aoi Inomata
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Yasuhiro Sakai
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Changming Zhao
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
- Advanced Softmaterials, Inc., Tokatsu Techno Plaza 603, 5-4-6 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan
| | - Christian Ruslim
- Advanced Softmaterials, Inc., Tokatsu Techno Plaza 603, 5-4-6 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan
| | - Yuya Shinohara
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Hideaki Yokoyama
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Yoshiyuki Amemiya
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Kohzo Ito
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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Travelet C, Hébraud P, Perry C, Brochon C, Hadziioannou G, Lapp A, Schlatter G. Temperature-Dependent Structure of α-CD/PEO-Based Polyrotaxanes in Concentrated Solution in DMSO: Kinetics and Multiblock Copolymer Behavior. Macromolecules 2010. [DOI: 10.1021/ma902686p] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Christophe Travelet
- Laboratoire d’Ingénierie des Polymères pour les Hautes Technologies, EAC 4379, CNRS, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg cedex 2, France
| | - Pascal Hébraud
- Institut de Physique et Chimie des Matériaux de Strasbourg, CNRS UMR 7504, Université de Strasbourg, 23 rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
| | - Christophe Perry
- Laboratoire d’Ingénierie des Polymères pour les Hautes Technologies, EAC 4379, CNRS, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg cedex 2, France
| | - Cyril Brochon
- Laboratoire d’Ingénierie des Polymères pour les Hautes Technologies, EAC 4379, CNRS, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg cedex 2, France
| | - Georges Hadziioannou
- Laboratoire d’Ingénierie des Polymères pour les Hautes Technologies, EAC 4379, CNRS, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg cedex 2, France
| | - Alain Lapp
- Laboratoire Léon Brillouin, CEA Saclay, 91191 Gif-sur-Yvette cedex, France
| | - Guy Schlatter
- Laboratoire d’Ingénierie des Polymères pour les Hautes Technologies, EAC 4379, CNRS, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg cedex 2, France
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15
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Li J. Cyclodextrin-based self-assembled supramolecular hydrogels and cationic polyrotaxanes for drug and gene delivery applications. J Drug Deliv Sci Technol 2010. [DOI: 10.1016/s1773-2247(10)50071-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Travelet C, Schlatter G, Hébraud P, Brochon C, Lapp A, Hadziioannou G. Formation and self-organization kinetics of alpha-CD/PEO-based pseudo-polyrotaxanes in water. A specific behavior at 30 degrees C. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:8723-8734. [PMID: 19301842 DOI: 10.1021/la900070v] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
alpha-Cyclodextrins (alpha-CDs) have the ability to form inclusion complexes with poly(ethylene oxide) (PEO) polymer chains. These pseudo-polyrotaxanes (PPRs) can be obtained by quenching an alpha-CD/PEO mixture in water from 70 degrees C down to a lower temperature (typically in the range from 5 to 30 degrees C) thanks to favorable interactions between alpha-CD cavities and PEO chains. Moreover, starting from a liquid alpha-CD/PEO mixture at a total mass fraction of 15% w/w at 70 degrees C, the formation of PPRs with time at a lower temperature induces a white physical gel with time, and phase separation is observed. We established that PPR molecules are exclusively found in the precipitated phase although unthreaded alpha-CD molecules and unthreaded PEO chains are in the liquid phase. At 30 degrees C, the physical gel formation is much slower than at 5 degrees C. At 30 degrees C, we established that, in a first step, alpha-CDs thread onto PEO chains, forming PPR molecules which are not in good solvent conditions in water. At a higher length scale, rapid aggregation of the PPR molecules occurs, and threaded alpha-CD-based nanocylinders form (cylinder length L = 5.7 nm and cylinder radius R = 4.7 nm). At a higher length scale, alpha-CD-based nanocylinders associate in a Gaussian way, engendering the formation of precipitated domains which are responsible for the high turbidity of the studied system. At the end of this first step (i.e., after 20 min), the system still remains liquid and the PPRs are totally formed. Then, in a second step (i.e., after 150 min), the system undergoes its reorganization characterized by a compacity increase of the precipitated domains and forms a physical gel. We found that PPRs are totally formed after 20 min at 30 degrees C and that the system stays in a nongel state up to 150 min. This opens new perspectives regarding the PPR chemical modification: between these two characteristic times, we can easily envisage an efficient chemical modification of the PPR molecules in water, as for instance an end-capping reaction leading to the synthesis of polyrotaxanes.
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Affiliation(s)
- Christophe Travelet
- Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, Ecole Européenne de Chimie, Polymères et Matériaux, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg cedex 2, France,
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17
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Yuan W, Ren J. Supramolecular polyseudorotaxanes formation between star-block copolymer and α-cyclodextrin: From outer block to diblock inclusion complexation. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23356] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Tonelli AE. Molecular Processing of Polymers with Cyclodextrins. INCLUSION POLYMERS 2009. [DOI: 10.1007/12_2008_2] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Cyclodextrin-based supramolecular architectures: syntheses, structures, and applications for drug and gene delivery. Adv Drug Deliv Rev 2008; 60:1000-17. [PMID: 18413280 DOI: 10.1016/j.addr.2008.02.011] [Citation(s) in RCA: 595] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2007] [Accepted: 02/14/2008] [Indexed: 11/21/2022]
Abstract
The supramolecular structures formed between cyclodextrins (CDs) and polymers have inspired interesting developments of novel supramolecular biomaterials. This review will update the recent progress in studies on supramolecular structures based on CDs and block copolymers, followed by the design and synthesis of CD-based supramolecular hydrogels and biodegradable polyrotaxanes for potential controlled drug delivery, and CD-containing cationic polymers and cationic polyrotaxanes for gene delivery. Supramolecular hydrogels based on the self-assembly of the inclusion complexes between CDs with biodegradable block copolymers could be used as promising injectable drug delivery systems for sustained controlled release of macromolecular drugs. Biodegradable polyrotaxanes with drug-conjugated CDs threaded on a polymer chain with degradable end-caps could be interesting supramolecular prodrugs for controlled and targeting delivery of drugs. CD-containing cationic polymers as gene carriers showed reduced cytotoxicity than non-CD-containing polymer counterparts. More importantly, the polyplexes of CD-containing cationic polymers with DNA could be pegylated through a supramolecular process using inclusion complexation between the CD moieties and a modified PEO. Finally, new cationic polyrotaxanes composed of multiple oligoethylenimine-grafted CDs threaded and end-capped on a block copolymer chain were designed and synthesized as a new class of polymeric gene delivery vectors, where the chain-interlocked cationic cyclic units formed an integrated supramolecular entity to function as a macromolecular gene vector. The development of the supramolecular biomaterials through inclusion complexation has opened up a new approach for designing novel drug and gene delivery systems, which may have many advantages over the systems based on the conventional polymeric materials.
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Tonelli AE. Soluble PEG-α-CD-Rotaxanes: Where on the PEG Chains Are the Permanently Threaded α-CDs Located and Are They Mobile? Macromolecules 2008. [DOI: 10.1021/ma800447y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alan E. Tonelli
- Fiber & Polymer Science Program, North Carolina State University, Campus Box 8301, Raleigh, North Carolina 27695-8301
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22
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Lo Nostro P, Giustini L, Fratini E, Ninham BW, Ridi F, Baglioni P. Threading, Growth, and Aggregation of Pseudopolyrotaxanes. J Phys Chem B 2008; 112:1071-81. [DOI: 10.1021/jp075380q] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pierandrea Lo Nostro
- Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Luca Giustini
- Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Emiliano Fratini
- Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Barry W. Ninham
- Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Francesca Ridi
- Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Piero Baglioni
- Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
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Choi HS, Takahashi A, Ooya T, Yui N. Molecular-recognition and binding properties of cyclodextrin-conjugated polyrotaxanes. Chemphyschem 2007; 7:1668-70. [PMID: 16807959 DOI: 10.1002/cphc.200600147] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hak Soo Choi
- School of Materials Science and the 21st Century COE Program, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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Hunt MA, Tonelli AE, Balik CM. Effect of Guest Hydrophobicity on Water Sorption Behavior of Oligomer/α-Cyclodextrin Inclusion Complexes. J Phys Chem B 2007; 111:3853-8. [PMID: 17391022 DOI: 10.1021/jp070145t] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cyclomaltohexaose (alpha-cyclodextrin, alpha-CD) can form inclusion complexes (ICs) with polymer molecules in the columnar crystal structure in which alpha-CD molecules stack to form a molecular tube. Complementary water vapor sorption and wide-angle X-ray diffractomery (WAXD) were performed on oligomer/alpha-CD ICs to determine their structures and stabilities. To discern the effect of guest molecule hydrophobicity on water adsorption isotherms, polyethylene glycol (PEG, MW = 600 g/mol) and hexatriacontane (HTC) guests were used. Sorption isotherms for PEG/alpha-CD IC are similar to those obtained for pure alpha-CD and PEG, suggesting the presence of dethreaded PEG in the sample. WAXD collected before and after water vapor sorption of PEG/alpha-CD IC indicated a partial conversion from columnar to cage crystal structure, the thermodynamically preferred structure for pure alpha-CD, due to dethreading of PEG. This behavior does not occur for HTC/alpha-CD IC. Sorption isotherms collected at 20, 30, 40, and 50 degrees C allowed the calculation of the isosteric heats of adsorption and the integral entropies of adsorbed water which are characterized by minima that indicate the monolayer concentration of water in the ICs.
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Affiliation(s)
- Marcus A Hunt
- Fiber and Polymer Science Program, Campus Box 8301, North Carolina State University, Raleigh, North Carolina 27695-8301, USA
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25
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Vedula J, Tonelli AE. Reorganization of poly(ethylene terephthalate) structures and conformations to alter properties. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/polb.21098] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Ni Y, Zheng S. Supramolecular inclusion complexation of polyhedral oligomeric silsesquioxane capped poly(ɛ-caprolactone) with α-cyclodextrin. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/pola.21893] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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Liu Y, Pellerin C. Highly Oriented Electrospun Fibers of Self-Assembled Inclusion Complexes of Poly(ethylene oxide) and Urea. Macromolecules 2006. [DOI: 10.1021/ma0625408] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Yang Liu
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Christian Pellerin
- Département de chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada
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28
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Rusa C, Rusa M, Peet J, Uyar T, Fox J, Hunt M, Wang X, Balik C, Tonelli A. The Nano-threading of Polymers. J INCL PHENOM MACRO 2006. [DOI: 10.1007/s10847-005-9038-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Affiliation(s)
- Gerhard Wenz
- Organische Makromolekulare Chemie, Saarland University, Geb. C4.2, D-66123 Saarbrücken, Germany.
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30
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Fleury G, Brochon C, Schlatter G, Bonnet G, Lapp A, Hadziioannou G. Synthesis and characterization of high molecular weight polyrotaxanes: towards the control over a wide range of threaded α-cyclodextrins. SOFT MATTER 2005; 1:378-385. [PMID: 32646105 DOI: 10.1039/b510331b] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This work focuses on the synthesis of polyrotaxanes with high molecular weight template poly(ethylene glycol) PEG (20 kg mol) having various and well-defined amounts of α-cyclodextrins (α-CD) per chain from 3 up to 125. is the complexation degree of the polyrotaxane defined to be the average number of cyclodextrin molecules per template chain. The usual route has been used for high values of , while sparsely complexed polyrotaxanes have been synthesized with an original one pot synthesis in water. Furthermore, a systematic study was carried out to understand and control the complexation degree of the polyrotaxane as a function of the complexation time, the temperature and the initial ratio of α-CD to template polymer. It has been shown that a high temperature thermal plateau leads to the formation of very sparsely complexed (low ) pseudo-polyrotaxanes for which, the threaded α-CD act like nuclei and generate a favourable driving force for the final complexation at lower temperature.
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Affiliation(s)
- Guillaume Fleury
- Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, UMR 7165 , Université Louis Pasteur, Ecole Européenne de Chimie, Polymères et Matériaux, 25, rue Becquerel, 67000 Strasbourg, France.
| | - Cyril Brochon
- Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, UMR 7165 , Université Louis Pasteur, Ecole Européenne de Chimie, Polymères et Matériaux, 25, rue Becquerel, 67000 Strasbourg, France.
| | - Guy Schlatter
- Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, UMR 7165 , Université Louis Pasteur, Ecole Européenne de Chimie, Polymères et Matériaux, 25, rue Becquerel, 67000 Strasbourg, France.
| | - Guillaume Bonnet
- Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, UMR 7165 , Université Louis Pasteur, Ecole Européenne de Chimie, Polymères et Matériaux, 25, rue Becquerel, 67000 Strasbourg, France.
| | - Alain Lapp
- Laboratoire Léon Brillouin, CEA de Saclay, 99191 Gif sur Yvette, France
| | - Georges Hadziioannou
- Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, UMR 7165 , Université Louis Pasteur, Ecole Européenne de Chimie, Polymères et Matériaux, 25, rue Becquerel, 67000 Strasbourg, France.
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31
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Wang L, Wang JL, Dong CM. Supramolecular inclusion complexes of star-shaped poly(ε-caprolactone) with α-cyclodextrin. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/pola.20999] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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32
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Choi HS, Lee SC, Yamamoto K, Yui N. Block-Selective Movement of α-Cyclodextrins in Polyrotaxanes of PEI-b-PEG-b-PEI Copolymer. Macromolecules 2005. [DOI: 10.1021/ma051400f] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hak Soo Choi
- School of Materials Science and the 21st Century COE Program, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Sang Cheon Lee
- School of Materials Science and the 21st Century COE Program, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Kaori Yamamoto
- School of Materials Science and the 21st Century COE Program, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Nobuhiko Yui
- School of Materials Science and the 21st Century COE Program, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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33
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Girardeau TE, Leisen J, Beckham HW. Chain Dynamics of Poly(oxyethylene) in Nanotubes ofα-Cyclodextrin by Solid-State2H NMR. MACROMOL CHEM PHYS 2005. [DOI: 10.1002/macp.200500095] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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