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Yasuda Y, Hidaka Y, Mayumi K, Yamada T, Fujimoto K, Okazaki S, Yokoyama H, Ito K. Molecular Dynamics of Polyrotaxane in Solution Investigated by Quasi-Elastic Neutron Scattering and Molecular Dynamics Simulation: Sliding Motion of Rings on Polymer. J Am Chem Soc 2019; 141:9655-9663. [PMID: 31090404 DOI: 10.1021/jacs.9b03792] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In this study, we investigated the molecular dynamics of polyrotaxane (PR), composed of α-cyclodextrins (CDs) and a poly(ethylene glycol) (PEG) axial chain, in solution by means of quasi-elastic neutron scattering (QENS) measurements and full-atomistic molecular dynamics (MD) simulations. From QENS experiments, we estimated the diffusion coefficients of CD and PEG monomers in PR, which are in quantitative agreement with those obtained by MD simulations. By analyzing the simulation results, we succeeded, for the first time, in observing and quantifying the sliding motion of CD along a PEG chain. The diffusion coefficient for the sliding motion is almost 6 times lower than that of the translational diffusion of CD in PR at room temperature. The retardation of the sliding motion is caused by the energy barrier on PEG produced by molecular interactions between CD and PEG. We propose a simple equation to describe the diffusion coefficient of the sliding dynamics in PR by combining the Einstein-Stokes diffusion model and a one-dimensional jump diffusion model. This work provides a general strategy for the molecular designs to control the sliding motion in PR.
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Affiliation(s)
- Yusuke Yasuda
- Department of Advanced Materials Science, School of Frontier Sciences , The University of Tokyo , 5-1-5 Kashiwa-noha , Kashiwa , Chiba 277-8561 , Japan
| | - Yuta Hidaka
- Department of Advanced Materials Science, School of Frontier Sciences , The University of Tokyo , 5-1-5 Kashiwa-noha , Kashiwa , Chiba 277-8561 , Japan
| | - Koichi Mayumi
- Department of Advanced Materials Science, School of Frontier Sciences , The University of Tokyo , 5-1-5 Kashiwa-noha , Kashiwa , Chiba 277-8561 , Japan
| | - Takeshi Yamada
- Neutron Science and Technology Center , Comprehensive Research Organization for Science and Society (CROSS) , IQBRC Building, 162-1 Shirakata , Tokai, Naka , Ibaraki 319-1106 , Japan
| | - Kazushi Fujimoto
- Department of Materials Chemistry , Nagoya University , Furo-cho , Chikusa-ku, Nagoya 464-8603 , Japan
| | - Susumu Okazaki
- Department of Materials Chemistry , Nagoya University , Furo-cho , Chikusa-ku, Nagoya 464-8603 , Japan
| | - Hideaki Yokoyama
- Department of Advanced Materials Science, School of Frontier Sciences , The University of Tokyo , 5-1-5 Kashiwa-noha , Kashiwa , Chiba 277-8561 , Japan
| | - Kohzo Ito
- Department of Advanced Materials Science, School of Frontier Sciences , The University of Tokyo , 5-1-5 Kashiwa-noha , Kashiwa , Chiba 277-8561 , Japan
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53
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Yasuda Y, Toda M, Mayumi K, Yokoyama H, Morita H, Ito K. Sliding Dynamics of Ring on Polymer in Rotaxane: A Coarse-Grained Molecular Dynamics Simulation Study. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00118] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yusuke Yasuda
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Masatoshi Toda
- National Institute
of Advanced Industrial Science and Technology (AIST), 1-1-1, Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Koichi Mayumi
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Hideaki Yokoyama
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Hiroshi Morita
- National Institute
of Advanced Industrial Science and Technology (AIST), 1-1-1, Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Kohzo Ito
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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54
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Hashidzume A, Yamaguchi H, Harada A. Cyclodextrin-Based Rotaxanes: from Rotaxanes to Polyrotaxanes and Further to Functional Materials. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900090] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Akihito Hashidzume
- Graduate School of Science; Osaka Univerisy; 1-1 Machikaneyama-cho Toyonaka, Osaka 560-0043 Japan
| | - Hiroyasu Yamaguchi
- Graduate School of Science; Osaka Univerisy; 1-1 Machikaneyama-cho Toyonaka, Osaka 560-0043 Japan
| | - Akira Harada
- Graduate School of Science; Osaka Univerisy; 1-1 Machikaneyama-cho Toyonaka, Osaka 560-0043 Japan
- Current address: The Institute of Scientific and Industrial Research; Osaka University; 8-1 Mihogaoka Ibaraki, Osaka 567-0047 Japan
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55
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Schröder HV, Stein F, Wollschläger JM, Sobottka S, Gaedke M, Sarkar B, Schalley CA. Accordion‐Like Motion in Electrochemically Switchable Crown Ether/Ammonium Oligorotaxanes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813265] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hendrik V. Schröder
- Institut für Chemie und BiochemieFreie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Felix Stein
- Institut für Chemie und BiochemieFreie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Jan M. Wollschläger
- Institut für Chemie und BiochemieFreie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Sebastian Sobottka
- Institut für Chemie und BiochemieFreie Universität Berlin Fabeckstraße 34/36 14195 Berlin Germany
| | - Marius Gaedke
- Institut für Chemie und BiochemieFreie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Biprajit Sarkar
- Institut für Chemie und BiochemieFreie Universität Berlin Fabeckstraße 34/36 14195 Berlin Germany
| | - Christoph A. Schalley
- Institut für Chemie und BiochemieFreie Universität Berlin Takustraße 3 14195 Berlin Germany
- School of Life SciencesNorthwestern Polytechnical University 127 Youyi Xilu, Xi'an Shaanxi 710072 P. R. China
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56
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Schröder HV, Stein F, Wollschläger JM, Sobottka S, Gaedke M, Sarkar B, Schalley CA. Accordion-Like Motion in Electrochemically Switchable Crown Ether/Ammonium Oligorotaxanes. Angew Chem Int Ed Engl 2019; 58:3496-3500. [PMID: 30623543 DOI: 10.1002/anie.201813265] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Indexed: 12/13/2022]
Abstract
Reversible oxidation reactions in electrochemically switchable oligorotaxanes with tetrathiafulvalene (TTF) decorated 24-crown-8 ether wheels generate intramolecular mixed-valence and radical-cation interactions between the wheels. This induces shuttling of the wheels and a contraction of inter-wheel distances. Further oxidation generates repulsive forces between the TTFs and maximizes the inter-wheel distances instead. These interactions and co-conformational changes were not observed for structurally similar controls in which acetyl groups along the axle prevent translational motion of the wheels. This operation mode of oligorotaxanes, which is reminiscent of an accordion-like motion, is promising for functional materials and nanodevices such as piston-type rotaxane motors.
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Affiliation(s)
- Hendrik V Schröder
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Felix Stein
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Jan M Wollschläger
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Sebastian Sobottka
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
| | - Marius Gaedke
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
| | - Christoph A Schalley
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany.,School of Life Sciences, Northwestern Polytechnical University, 127 Youyi Xilu, Xi'an, Shaanxi, 710072, P. R. China
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57
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Arisaka Y, Yui N. Polyrotaxane-based biointerfaces with dynamic biomaterial functions. J Mater Chem B 2019; 7:2123-2129. [PMID: 32073570 DOI: 10.1039/c9tb00256a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The molecular mobility of cyclic molecules (e.g.α-cyclodextrins) threaded along a linear polymer chain (e.g. poly(ethylene glycol)) in polyrotaxanes is a unique feature for biomaterials with dynamic functionality. Surfaces with molecular mobility can be obtained by introducing polyrotaxanes. The molecular mobility of polyrotaxane-based surfaces can be modulated by changing the number of threaded cyclic molecules and modifying their functional groups. Biological ligands modified with α-cyclodextrins exhibit increased multivalent interactions with their receptors due to the molecular mobility of the latter. Furthermore, polyrotaxane-based surfaces not only improve the initial response of cells via multivalent interactions, but also affect cytoskeleton formation and the inherent quality of cells, including differentiation. Such polyrotaxane surfaces can emerge as new biointerfaces that can adapt to the dynamic biological nature.
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Affiliation(s)
- Yoshinori Arisaka
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan.
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58
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Takata T. Stimuli-Responsive Molecular and Macromolecular Systems Controlled by Rotaxane Molecular Switches. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180330] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Toshikazu Takata
- Department of Chemical Science and Engineering and Research Institute of Polymer Science and Technology (RIPST), Tokyo Institute of Technology, and JST-CREST, Ookayama, Meguro, Tokyo 152-8552, Japan
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59
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Egele K, Samaddar S, Schneider N, Thompson D, Wenz G. Synthesis of the Anionic Hydroxypropyl-β-cyclodextrin:Poly(decamethylenephosphate) Polyrotaxane and Evaluation of its Cholesterol Efflux Potential in Niemann-Pick C1 Cells. J Mater Chem B 2019; 7:528-537. [PMID: 31372225 PMCID: PMC6675466 DOI: 10.1039/c8tb02950d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Niemann-Pick type C disease (NPC) is a lysosomal storage disease that is characterized by a progressive accumulation of unesterified cholesterol in the lysosomes leading to organ damage from cell dysfunction. Hydroxypropyl-β-cyclodextrin (HP-β-CD) is an attractive drug candidate for treating NPC, as it diminishes cholesterol accumulation in NPC cells. Systemic HP-β-CD treatment, however, is limited by rapid renal clearance. We designed a new anionic HP-β-CD polyrotaxane to act as a slow release formulation based on a polyalkylene phosphate core to improve the pharmacokinetics. The polyalkylene phosphate comprises hydrophobic decamethylene spacers linked by biodegradable anionic phosphodiester bonds. HP-β-CD was threaded onto this polymer first and α-CD afterwards to prevent burst release of the threaded HP-β-CD. Our findings show that HP-β-CD was slowly released from the watersoluble polyrotaxane over a 30 days period. The polyrotaxane provided persistently diminished cholesterol levels in NPC1 cells by 20% relative to untreated cells. These results demonstrate the therapeutic potential of this novel HP-β-CD polyrotaxane for the mobilization of aberrantly stored cholesterol in NPC1 cells.
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Affiliation(s)
- Kerstin Egele
- Organic Macromolecular Chemistry, Saarland University, Saarbrücken, Germany
| | | | | | | | - Gerhard Wenz
- Organic Macromolecular Chemistry, Saarland University, Saarbrücken, Germany
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60
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Wang XQ, Wang W, Li WJ, Qin Y, Yin GQ, Jiang WL, Li X, Wu S, Yang HB. Rotaxane-branched dendrimers with aggregation-induced emission behavior. Org Chem Front 2019. [DOI: 10.1039/c9qo00308h] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
By introducing a 9,10-distyrylanthrance (DSA) moiety as the core, we demonstrated the synthesis of a new family of rotaxane-branched dendrimers G1–G3 through the controllable divergent approach.
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Affiliation(s)
- Xu-Qing Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- Chang-Kung Chuang Institute
- East China Normal University
- Shanghai 200062
| | - Wei Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- Chang-Kung Chuang Institute
- East China Normal University
- Shanghai 200062
| | - Wei-Jian Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- Chang-Kung Chuang Institute
- East China Normal University
- Shanghai 200062
| | - Yi Qin
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- Chang-Kung Chuang Institute
- East China Normal University
- Shanghai 200062
| | - Guang-Qiang Yin
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- Chang-Kung Chuang Institute
- East China Normal University
- Shanghai 200062
| | - Wei-Ling Jiang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- Chang-Kung Chuang Institute
- East China Normal University
- Shanghai 200062
| | - Xiaopeng Li
- Department of Chemistry
- University of South Florida
- Tampa
- USA
| | - Shuai Wu
- Department of Neurology
- Zhongshan Hospital
- Fudan University
- Shanghai 200032
- P. R. China
| | - Hai-Bo Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- Chang-Kung Chuang Institute
- East China Normal University
- Shanghai 200062
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61
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Arya N, Mishra SK, Suryaprakash N. Intramolecular hydrogen bond directed distribution of conformational populations in the derivatives of N′-benzylidenebenzohydrazide. NEW J CHEM 2019. [DOI: 10.1039/c9nj03071a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The extensive NMR investigations reveal the presence of E-isomers in the derivative of N′-benzylidenebenzohydrazide. The different conformer populations are controlled by the strength of intramolecular hydrogen bonds.
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Affiliation(s)
- Neeru Arya
- NMR Research Centre and Solid State and Structural Chemistry Unit
- Indian Institute of Science
- Bangalore 560012
- India
| | - Sandeep Kumar Mishra
- NMR Research Centre and Solid State and Structural Chemistry Unit
- Indian Institute of Science
- Bangalore 560012
- India
| | - N. Suryaprakash
- NMR Research Centre and Solid State and Structural Chemistry Unit
- Indian Institute of Science
- Bangalore 560012
- India
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62
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Ji X, Ahmed M, Long L, Khashab NM, Huang F, Sessler JL. Adhesive supramolecular polymeric materials constructed from macrocycle-based host–guest interactions. Chem Soc Rev 2019; 48:2682-2697. [DOI: 10.1039/c8cs00955d] [Citation(s) in RCA: 138] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review describes recent progress in adhesive supramolecular polymeric materials constructed from macrocycle-based host–guest interactions.
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Affiliation(s)
- Xiaofan Ji
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Mehroz Ahmed
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Lingliang Long
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
- School of Chemistry and Chemical Engineering
| | - Niveen M. Khashab
- King Abdullah University of Science and Technology (KAUST)
- 4700 King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering
- Center for Chemistry of High-Performance & Novel Materials
- Department of Chemistry
- Yuquan Campus
- Zhejiang University
| | - Jonathan L. Sessler
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
- Center for Supramolecular Chemistry and Catalysis
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63
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Manganaro N, Pisagatti I, Notti A, Parisi MF, Gattuso G. Self-sorting assembly of a calixarene/crown ether polypseudorotaxane gated by ion-pairing. NEW J CHEM 2019. [DOI: 10.1039/c9nj01583c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A polypseudorotaxane composed of a calix[5]arene-diammonium supramolecular polymer and dibenzo-24-crown-8 wheels self-assembles only in the presence of superweak counterions
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Affiliation(s)
- Nadia Manganaro
- Dipartimento di Scienze Chimiche
- Biologiche
- Farmaceutiche ed Ambientali
- Università di Messina
- 98166 Messina
| | - Ilenia Pisagatti
- Dipartimento di Scienze Chimiche
- Biologiche
- Farmaceutiche ed Ambientali
- Università di Messina
- 98166 Messina
| | - Anna Notti
- Dipartimento di Scienze Chimiche
- Biologiche
- Farmaceutiche ed Ambientali
- Università di Messina
- 98166 Messina
| | - Melchiorre F. Parisi
- Dipartimento di Scienze Chimiche
- Biologiche
- Farmaceutiche ed Ambientali
- Università di Messina
- 98166 Messina
| | - Giuseppe Gattuso
- Dipartimento di Scienze Chimiche
- Biologiche
- Farmaceutiche ed Ambientali
- Università di Messina
- 98166 Messina
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64
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Okuma Y, Tsukamoto T, Inagaki T, Miyagawa S, Kimura M, Naito M, Takaya H, Kawasaki T, Tokunaga Y. Rotational isomerism of the amide units in rotaxanes based on a cyclic tetraamide and secondary ammonium ions. Org Chem Front 2019. [DOI: 10.1039/c9qo00096h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We describe the synthesis of [2]rotaxanes consisting of a macrocyclic tetraamide and mono- and bis-ammonium ions and their conformational isomerism.
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Affiliation(s)
- Yukari Okuma
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Toshihiro Tsukamoto
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Takayuki Inagaki
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Shinobu Miyagawa
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Masaki Kimura
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Masaya Naito
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Hikaru Takaya
- International Research Center for Elements Science
- Institute for Chemical Research
- Kyoto University
- Uji 611-0011
- Japan
| | - Tsuneomi Kawasaki
- Department of Applied Chemistry
- Tokyo University of Science
- Tokyo 162-8601
- Japan
| | - Yuji Tokunaga
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
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65
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Abstract
Heterorotaxanes, in which at least two types of macrocycles were introduced as the wheel components in rotaxanes, have attracted more and more attention during the past few decades owing to their unique structural features and intriguing properties. The coexistence of varied macrocycles endows the resultant heterorotaxanes not only versatile shuttling and switching behaviors but also great potential for the construction of functional rotaxane systems for applications. In this feature article, a survey of the successful synthesis of heterorotaxanes will be provided based on the various strategies towards the synthesis of heterorotaxanes, i.e. orthogonal binding approach, self-sorting approach, cooperative capture approach, active metal template approach, etc.
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Affiliation(s)
- Xu-Qing Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, China.
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66
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Malucelli G, Dore J, Sanna D, Nuvoli D, Rassu M, Mariani A, Alzari V. Sliding Crosslinked Thermoresponsive Materials: Polypseudorotaxanes Made of Poly(N-Isopropylacrylamide) and Acrylamide-γ-Cyclodextrin. Front Chem 2018; 6:585. [PMID: 30533412 PMCID: PMC6265515 DOI: 10.3389/fchem.2018.00585] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 11/08/2018] [Indexed: 12/23/2022] Open
Abstract
Novel polypseudorotaxanes (PPR) based on poly(N-isopropylacrylamide) (PNIPAAm) and acrylamide-γ-cyclodextrin (AγCD) are successfully synthesized. AγCD gives rise to sliding crosslinking systems and influences the thermoresponsive and swelling behavior of PNIPAAm hydrogels. Namely, their lower critical solution temperature (LCST) can be tuned up to 38°C, thus making the resulting materials of great interest in biomedical applications. Also, AγCD influences the thermal and mechanical properties of hydrogels, by affecting the T g and E modulus values.
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Affiliation(s)
- Giulio Malucelli
- Department of Applied Science and Technology, Institute of Materials Science and Engineering for Innovative Technologies, Politecnico di Torino, Alessandria, Italy
| | - Jvan Dore
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - Davide Sanna
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - Daniele Nuvoli
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - Mariella Rassu
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - Alberto Mariani
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - Valeria Alzari
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
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67
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Mantooth SM, Munoz-Robles BG, Webber MJ. Dynamic Hydrogels from Host-Guest Supramolecular Interactions. Macromol Biosci 2018; 19:e1800281. [PMID: 30303631 DOI: 10.1002/mabi.201800281] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 09/19/2018] [Indexed: 01/17/2023]
Abstract
Hydrogel biomaterials are pervasive in biomedical use. Applications of these soft materials range from contact lenses to drug depots to scaffolds for transplanted cells. A subset of hydrogels is prepared from physical cross-linking mediated by host-guest interactions. Host macrocycles, the most recognizable supramolecular motif, facilitate complex formation with an array of guests by inclusion in their portal. Commonly, an appended macrocycle forms a complex with appended guests on another polymer chain. The formation of poly(pseudo)rotaxanes is also demonstrated, wherein macrocycles are threaded by a polymer chain to give rise to physical cross-linking by secondary non-covalent interactions or polymer jamming. Host-guest supramolecular hydrogels lend themselves to a variety of applications resulting from their dynamic properties that arise from non-covalent supramolecular interactions, as well as engineered responsiveness to external stimuli. These are thus an exciting new class of materials.
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Affiliation(s)
- Siena M Mantooth
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, 205 McCourtney Hall, Notre Dame, IN, 46556, USA
| | - Brizzia G Munoz-Robles
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, 205 McCourtney Hall, Notre Dame, IN, 46556, USA
| | - Matthew J Webber
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, 205 McCourtney Hall, Notre Dame, IN, 46556, USA
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68
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Ponomarenko AT, Tameev AR, Shevchenko VG. Synthesis of polymers and modification of polymeric materials in electromagnetic fields. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4790] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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69
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Cyclodextrin-Based Macromolecular Systems as Cholesterol-Mopping Therapeutic Agents in Niemann-Pick Disease Type C. Macromol Rapid Commun 2018; 40:e1800557. [DOI: 10.1002/marc.201800557] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 08/17/2018] [Indexed: 12/12/2022]
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70
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Shi B, Li Z, Liu Y, Shangguan L, Zhu H, Ju H, Huang F. Clip[5]arenes: A new family of molecular clips. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.08.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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71
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Liu P, Li Z, Shi B, Liu J, Zhu H, Huang F. Formation of Linear Side-Chain Polypseudorotaxane with Supramolecular Polymer Backbone through Neutral Halogen Bonds and Pillar[5]arene-Based Host-Guest Interactions. Chemistry 2018; 24:4264-4267. [DOI: 10.1002/chem.201800312] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Peiren Liu
- State Key Laboratory of Chemical Engineering; Center for Chemistry of High-Performance & Novel Materials; Department of Chemistry; Zhejiang University; Hangzhou 310027 P. R. China
| | - Zhengtao Li
- State Key Laboratory of Chemical Engineering; Center for Chemistry of High-Performance & Novel Materials; Department of Chemistry; Zhejiang University; Hangzhou 310027 P. R. China
| | - Bingbing Shi
- State Key Laboratory of Chemical Engineering; Center for Chemistry of High-Performance & Novel Materials; Department of Chemistry; Zhejiang University; Hangzhou 310027 P. R. China
| | - Jiyong Liu
- State Key Laboratory of Chemical Engineering; Center for Chemistry of High-Performance & Novel Materials; Department of Chemistry; Zhejiang University; Hangzhou 310027 P. R. China
| | - Huangtianzhi Zhu
- State Key Laboratory of Chemical Engineering; Center for Chemistry of High-Performance & Novel Materials; Department of Chemistry; Zhejiang University; Hangzhou 310027 P. R. China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering; Center for Chemistry of High-Performance & Novel Materials; Department of Chemistry; Zhejiang University; Hangzhou 310027 P. R. China
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72
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Zeng X, Deng H, Jia X, Cui L, Li J, Li C, Fang J. Construction of [2]rotaxane-based supramolecular polymers driven by wheel-stopper π⋯π interactions. Chem Commun (Camb) 2018; 54:11634-11637. [DOI: 10.1039/c8cc07188h] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A new strategy for supramolecular polymerization is designed and presented, which is based on the wheel-stopper charge-transfer interactions of [2]rotaxanes.
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Affiliation(s)
- Xianqiang Zeng
- Department of Chemistry
- Center for Supramolecular Chemistry and Catalysis
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Hongmei Deng
- Laboratory for Microstructures, Instrumental Analysis and Research Center of Shanghai University
- Shanghai 200444
- P. R. China
| | - Xueshun Jia
- Department of Chemistry
- Center for Supramolecular Chemistry and Catalysis
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Lei Cui
- Department of Chemistry
- Center for Supramolecular Chemistry and Catalysis
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Jian Li
- Department of Chemistry
- Center for Supramolecular Chemistry and Catalysis
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Chunju Li
- Department of Chemistry
- Center for Supramolecular Chemistry and Catalysis
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Jianhui Fang
- Department of Chemistry
- Center for Supramolecular Chemistry and Catalysis
- Shanghai University
- Shanghai 200444
- P. R. China
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73
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Liu G, Yuan Q, Hollett G, Zhao W, Kang Y, Wu J. Cyclodextrin-based host–guest supramolecular hydrogel and its application in biomedical fields. Polym Chem 2018. [DOI: 10.1039/c8py00730f] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
CD-based host–guest supramolecular hydrogels and their potential biomedical application.
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Affiliation(s)
- Guiting Liu
- School of Biomedical Engineering
- Sun Yat-sen University
- Guangzhou
- P. R. China
| | - Qijuan Yuan
- School of Biomedical Engineering
- Sun Yat-sen University
- Guangzhou
- P. R. China
| | - Geoffrey Hollett
- Materials Science and Engineering Program
- University of California San Diego
- La Jolla
- USA
| | - Wei Zhao
- Laboratory for Stem Cells and Tissue Engineering
- Ministry of Education
- Sun Yat-sen University
- Guangzhou 510080
- China
| | - Yang Kang
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu
- China
| | - Jun Wu
- School of Biomedical Engineering
- Sun Yat-sen University
- Guangzhou
- P. R. China
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74
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Zhang Y, Yu SB, Yang B, Wang H, Zhang DW, Li ZT. Ion-pair electrostatic attraction-enhanced donor–acceptor interactions between the prototypic 1,4-dialkoxybenzene-viologen binding mode in water. Org Chem Front 2018. [DOI: 10.1039/c7qo01126a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Intermolecular ion-pair electrostatic attraction was demonstrated to remarkably enhance the donor–acceptor interaction between prototypic 1,4-dialkoxybenzene and viologen in water.
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Affiliation(s)
- Yao Zhang
- Department of Chemistry
- Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM)
- and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai 200433
| | - Shang-Bo Yu
- Department of Chemistry
- Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM)
- and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai 200433
| | - Bo Yang
- Department of Chemistry
- Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM)
- and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai 200433
| | - Hui Wang
- Department of Chemistry
- Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM)
- and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai 200433
| | - Dan-Wei Zhang
- Department of Chemistry
- Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM)
- and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai 200433
| | - Zhan-Ting Li
- Department of Chemistry
- Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM)
- and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai 200433
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75
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Fu XB, Yang G, Wu JZ, Wang JC, Chen Q, Yao YF. Fast Lithium-Ion Transportation in Crystalline Polymer Electrolytes. Chemphyschem 2017; 19:45-50. [PMID: 29044943 DOI: 10.1002/cphc.201701092] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Xiao-Bin Fu
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance; School of Physics and Materials Science; East China Normal University; North Zhongshan Road 3663 200062 Shanghai P. R. China
| | - Guang Yang
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance; School of Physics and Materials Science; East China Normal University; North Zhongshan Road 3663 200062 Shanghai P. R. China
| | - Jin-Ze Wu
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance; School of Physics and Materials Science; East China Normal University; North Zhongshan Road 3663 200062 Shanghai P. R. China
| | - Jia-Chen Wang
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance; School of Physics and Materials Science; East China Normal University; North Zhongshan Road 3663 200062 Shanghai P. R. China
| | - Qun Chen
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance; School of Physics and Materials Science; East China Normal University; North Zhongshan Road 3663 200062 Shanghai P. R. China
| | - Ye-Feng Yao
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance; School of Physics and Materials Science; East China Normal University; North Zhongshan Road 3663 200062 Shanghai P. R. China
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76
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Tamura A, Yui N. Polyrotaxane-based systemic delivery of β-cyclodextrins for potentiating therapeutic efficacy in a mouse model of Niemann-Pick type C disease. J Control Release 2017; 269:148-158. [PMID: 29138063 DOI: 10.1016/j.jconrel.2017.11.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 11/03/2017] [Accepted: 11/10/2017] [Indexed: 11/28/2022]
Abstract
Niemann-Pick type C (NPC) disease is a fatal metabolic disorder characterized by the lysosomal accumulation of cholesterol. Although 2-hydroxypropyl β-cyclodextrin (HP-β-CD) promotes the excretion of cholesterol and prolongs the life span in animal models of NPC disease, it requires extremely high dose. We developed acid-labile β-CD-based polyrotaxanes (PRXs) comprising multiple β-CDs threaded along a polymer chain capped with acid-cleavable stopper molecules for potentiating therapeutic efficacy of β-CD in NPC disease. The acid-labile PRXs dissociate under the acidic lysosomes and release threaded β-CDs in lysosomes, which promotes cholesterol excretion in NPC disease model cells at lower concentration than HP-β-CD. In this study, the therapeutic effect of the PRXs in a mouse model of NPC disease was investigated. Weekly administration of the PRXs significantly prolonged the life span and suppressed neurodegeneration in mice, even at a dose of 500mg/kg, a markedly lower dose than previously reported for HP-β-CD. Detailed analysis of tissue cholesterol revealed that PRX treatment markedly suppressed the tissue accumulation of cholesterol in the NPC mouse model, but did not alter cholesterol content in wild-type mice. Acid-labile PRX is therefore a promising candidate for potentiating the efficacy of β-CD in the treatment of NPC disease.
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Affiliation(s)
- Atsushi Tamura
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan
| | - Nobuhiko Yui
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan.
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77
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Topology-transformable polymers: linear–branched polymer structural transformation via the mechanical linking of polymer chains. Polym J 2017. [DOI: 10.1038/pj.2017.60] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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78
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Mechanically linked supramolecular polymer architectures derived from macromolecular [2]rotaxanes: Synthesis and topology transformation. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.08.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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79
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Ge YC, Mei L, Xie ZN, Hu KQ, Xia CQ, Wang XL, Chai ZF, Shi WQ. Supramolecular Isomers of Coordination-Directed Side-Chain Polypseudorotaxanes Based on Trimeric Uranyl Oxalate Nodes. Chemistry 2017; 23:8380-8384. [DOI: 10.1002/chem.201701706] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Yun-chen Ge
- College of Chemistry; Sichuan University; Chengdu 610064 P.R. China
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Lei Mei
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Zhen-ni Xie
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Kong-qiu Hu
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Chuan-qin Xia
- College of Chemistry; Sichuan University; Chengdu 610064 P.R. China
| | - Xiao-lin Wang
- Institute of Nuclear Physics and Chemistry; China Academy of Engineering Physics; Mianyang Sichuan 621900 P.R. China
| | - Zhi-fang Chai
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 P.R. China
- School of Radiological and Interdisciplinary Sciences and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions; Soochow University; Suzhou 215123 P.R. China
| | - Wei-qun Shi
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 P.R. China
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80
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Expanded aromatic carboxylate anion induced molecular sandwich construction via a tetracationic imidazolium macrocycle conversion from molecular box to molecular tweezer. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.04.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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81
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Han X, Li Z, Xu Z, Zhao Z, Liu SH, Yin J. Construction of Crown Ether-Stoppering [3]Rotaxanes Based on N
-Hetero Crown Ether Host. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xie Han
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education; College of Chemistry, Central China Normal University; Wuhan Hubei 430079 China
| | - Ziyong Li
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education; College of Chemistry, Central China Normal University; Wuhan Hubei 430079 China
- College of Food and Drug, Luoyang Normal University; Luoyang Henan 471022 China
| | - Zhiqiang Xu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education; College of Chemistry, Central China Normal University; Wuhan Hubei 430079 China
| | - Zhiyong Zhao
- College of Chemical Engineering and Technology; Wuhan University of Science and Technology; Wuhan Hubei 430081 China
| | - Sheng Hua Liu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education; College of Chemistry, Central China Normal University; Wuhan Hubei 430079 China
| | - Jun Yin
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education; College of Chemistry, Central China Normal University; Wuhan Hubei 430079 China
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82
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Zhou S, Wang J, Wang G, Jiang Z, Ren H. An approach to developing high dielectric constant nanocomposites based on polyrotaxane derivative. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.03.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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83
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Cheng HB, Li Z, Huang YD, Liu L, Wu HC. Pillararene-Based Aggregation-Induced-Emission-Active Supramolecular System for Simultaneous Detection and Removal of Mercury(II) in Water. ACS APPLIED MATERIALS & INTERFACES 2017; 9:11889-11894. [PMID: 28317372 DOI: 10.1021/acsami.7b00363] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Supramolecular polymers are polymers based on monomeric units held together with directional and reversible noncovalent interactions. Compared with traditional polymers, they possess better processability and better recycling properties, owing to their reversible monomer-to-polymer transition. Herein, we report the construction of a new supramolecular system through self-assembly of a thymine-substituted copillar[5]arene 1 and a tetraphenylethylene (TPE) derivative 2 in the presence of Hg2+. Copillar[5]arene 1 can coordinate with Hg2+ tightly through T-Hg2+-T pairings. On the other hand, 1 can bind with guest molecule 2 through host-guest interactions between the pillararene cavity and the nitrile moiety of 2. These joint interactions generate crisscrossed networks composed of 1, 2, and Hg2+, which eventually wrap into spherical nanoparticles. Due to the aggregation-induced emission (AIE) properties of 2, the formed supramolecular polymer exhibits strong fluorescence which renders convenient the detection of the Hg2+-containing nanoparticles and the subsequent removal procedure. Furthermore, the polymer precipitate can be readily isolated by simple treatment, and the pseudorotaxane 2 ⊂ 1 can be recycled and reused. Our study has demonstrated a practical strategy for the sensing and removal of heavy metal ions in water by the construction of supramolecular polymers.
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Affiliation(s)
- Hong-Bo Cheng
- Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, China
| | - Ziyan Li
- Key Laboratory of Systems Bioengineering, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, China
| | - Yao-Dong Huang
- Key Laboratory of Systems Bioengineering, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, China
| | - Lei Liu
- Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, China
| | - Hai-Chen Wu
- Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, China
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
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84
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Wang H, Ji X, Li Z, Huang F. Fluorescent Supramolecular Polymeric Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29. [PMID: 28198107 DOI: 10.1002/adma.201606117] [Citation(s) in RCA: 161] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 12/13/2016] [Indexed: 05/07/2023]
Abstract
Fluorescent supramolecular polymeric materials are rising stars in the field of fluorescent materials not only because of the inherent optoelectronic properties originating from their chromophores, but also due to the fascinating stimuli-responsiveness and reversibility coming from their noncovalent connections. Especially, these noncovalent connections influence the fluorescence properties of the chromophores because their state of aggregation and energy transfer can be regulated by the assembly-disassembly process. Considering these unique properties, fluorescent supramolecular polymeric materials have facilitated the evolution of new materials useful for applications in fluorescent sensors, probes, as imaging agents in biological systems, light-emitting diodes, and organic electronic devices. In this Review, fluorescent supramolecular polymeric materials are classified depending on the types of main driving forces for supramolecular polymerization, including multiple hydrogen bonding, electrostatic interactions, π-π stacking interactions, metal-coordination, van der Waals interactions and host-guest interactions. Through the summary of the studies about fluorescent supramolecular polymeric materials, the status quo of this research field is assessed. Based on existing challenges, directions for the future development of this field are furnished.
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Affiliation(s)
- Hu Wang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Xiaofan Ji
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Zhengtao Li
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
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85
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Tamura A, Yui N. Rational design of stimuli-cleavable polyrotaxanes for therapeutic applications. Polym J 2017. [DOI: 10.1038/pj.2017.17] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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86
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Mishra SK, Suryaprakash N. Intramolecular Hydrogen Bonding Involving Organic Fluorine: NMR Investigations Corroborated by DFT-Based Theoretical Calculations. Molecules 2017; 22:E423. [PMID: 28272370 PMCID: PMC6155419 DOI: 10.3390/molecules22030423] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 03/02/2017] [Indexed: 01/24/2023] Open
Abstract
The combined utility of many one and two dimensional NMR methodologies and DFT-based theoretical calculations have been exploited to detect the intramolecular hydrogen bond (HB) in number of different organic fluorine-containing derivatives of molecules, viz. benzanilides, hydrazides, imides, benzamides, and diphenyloxamides. The existence of two and three centered hydrogen bonds has been convincingly established in the investigated molecules. The NMR spectral parameters, viz., coupling mediated through hydrogen bond, one-bond NH scalar couplings, physical parameter dependent variation of chemical shifts of NH protons have paved the way for understanding the presence of hydrogen bond involving organic fluorine in all the investigated molecules. The experimental NMR findings are further corroborated by DFT-based theoretical calculations including NCI, QTAIM, MD simulations and NBO analysis. The monitoring of H/D exchange with NMR spectroscopy established the effect of intramolecular HB and the influence of electronegativity of various substituents on the chemical kinetics in the number of organic building blocks. The utility of DQ-SQ technique in determining the information about HB in various fluorine substituted molecules has been convincingly established.
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Affiliation(s)
- Sandeep Kumar Mishra
- NMR Research Centre, Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India.
| | - N Suryaprakash
- NMR Research Centre, Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India.
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87
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Affiliation(s)
- Jessica Hilschmann
- Organic Macromolecular Chemistry, Saarland University,
Campus Saarbrücken C 4.2, 66123 Saarbrücken, Germany
| | - Gergely Kali
- Organic Macromolecular Chemistry, Saarland University,
Campus Saarbrücken C 4.2, 66123 Saarbrücken, Germany
| | - Gerhard Wenz
- Organic Macromolecular Chemistry, Saarland University,
Campus Saarbrücken C 4.2, 66123 Saarbrücken, Germany
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88
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Niu Z, Huang F, Gibson HW. Steric effects on complexation of bis(
meta
‐phenylene)‐32‐crown‐10 derivatives with paraquats. HETEROATOM CHEMISTRY 2017. [DOI: 10.1002/hc.21359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Zhenbin Niu
- Department of Chemistry Virginia Polytechnic Institute and State University Blacksburg VA USA
| | - Feihe Huang
- Department of Chemistry Virginia Polytechnic Institute and State University Blacksburg VA USA
| | - Harry W. Gibson
- Department of Chemistry Virginia Polytechnic Institute and State University Blacksburg VA USA
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89
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Milan DC, Krempe M, Ismael AK, Movsisyan LD, Franz M, Grace I, Brooke RJ, Schwarzacher W, Higgins SJ, Anderson HL, Lambert CJ, Tykwinski RR, Nichols RJ. The single-molecule electrical conductance of a rotaxane-hexayne supramolecular assembly. NANOSCALE 2017; 9:355-361. [PMID: 27924336 DOI: 10.1039/c6nr06355a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Oligoynes are archetypical molecular wires due to their 1-D chain of conjugated carbon atoms and ability to transmit charge over long distances by coherent tunneling. However, the stability of the oligoyne can be an issue. Here we address this problem by two stabilization methods, namely sterically shielding endgroups, and rotaxination to produce an insulated molecular wire. We demonstrate the threading of a hexayne within a macrocycle to form a rotaxane and report measurements of the electrical conductance of this single supramolecular assembly within an STM break junction. The macrocycle is retained around the hexayne through the use of 3,5-diphenylpyridine stoppers at both ends of the molecular wire, which also serve as chemisorption contacts to the gold electrodes of the junction. Molecular conductance was measured for both the supramolecular assembly and also for the molecular wire in the absence of the macrocycle. The threaded macrocycle, which at room temperature is mobile along the length of the hexayne between the stoppers, has only a minimal impact on the conductance. However, the probability of molecular junction formation in a given break junction formation cycle is notably lower with the rotaxane. In seeking to understand the conductance behavior, the electronic properties of these molecular assemblies and the electrical behavior of the junctions have been investigated by using DFT-based computational methods.
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Affiliation(s)
- David C Milan
- Department of Chemistry, University of Liverpool, Crown St, Liverpool, L69 7ZD, UK.
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90
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Yasumoto A, Gotoh H, Gotoh Y, Imran AB, Hara M, Seki T, Sakai Y, Ito K, Takeoka Y. Highly Responsive Hydrogel Prepared Using Poly(N-isopropylacrylamide)-Grafted Polyrotaxane as a Building Block Designed by Reversible Deactivation Radical Polymerization and Click Chemistry. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01955] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Atsushi Yasumoto
- Department of Molecular
Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
| | - Hiroaki Gotoh
- Department of Molecular
Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
| | - Yoshie Gotoh
- Department of Molecular
Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
| | - Abu Bin Imran
- Department of Molecular
Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
| | - Mitsuo Hara
- Department of Molecular
Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
| | - Takahiro Seki
- Department of Molecular
Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, 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
| | - 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
| | - Yukikazu Takeoka
- Department of Molecular
Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
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91
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Yu G, Zhao R, Wu D, Zhang F, Shao L, Zhou J, Yang J, Tang G, Chen X, Huang F. Pillar[5]arene-based amphiphilic supramolecular brush copolymer: fabrication, controllable self-assembly and application in self-imaging targeted drug delivery. Polym Chem 2016; 7:6178-6188. [PMID: 27795740 PMCID: PMC5084091 DOI: 10.1039/c6py01402j] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Supramolecular brush copolymers have attracted continuing interest due to their unusual architectures, fascinating properties, and potential applications in many fields involving smart stimuli-responsive drug delivery systems. Herein, the first pillararene-based amphiphilic supramolecular brush copolymer (P5-PEG-Biotin⊃PTPE) was constructed on the basis of the host-guest molecular recognition between a water-soluble pillar[5]arene (P5) and a viologen salt (M). P5-PEG-Biotin⊃PTPE self-assembled into supramolecular nanoparticles (SNPs), which were utilized as a self-imaging drug delivery vehicle by taking advantage of the aggregation-induced emission (AIE) effect. Encapsulation of anticancer drug doxorubicin (DOX) caused deactivation of the fluorescences of both the tetraphenylethene (TPE) and DOX chromophores due to the energy transfer relay (ETR) effect, mediated by Förster resonance energy transfer (FRET) and aggregation-caused quenching (ACQ). The release of loaded DOX molecules can be triggered by low pH and reductase, recovering the "silenced" fluorescence caused by the interruption of the ETR effect, achieving in situ visualization of the drug release process by observing the location and magnitude of the energy transfer-dependent fluorescence variation. The biotin ligands on the surfaces of the DOX-loaded SNPs act as targeting agents to deliver DOX preferentially to cancer cells over-expressing biotin receptor. In vitro studies demonstrated that the loading of DOX by this supramolecular nanomaterial exhibited selective cytotoxicity towards cancer cells over normal cells. The potency of this sophisticated supramolecular drug delivery system in cancer therapy was further evaluated in HeLa tumor-bearing mice. In vivo experiments confirmed that the DOX-loaded SNPs possess excellent antitumor efficacy with negligible systemic toxicity.
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Affiliation(s)
- Guocan Yu
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Run Zhao
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Dan Wu
- Department of Chemistry, Institute of Chemical Biology and Pharmaceutical Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Fuwu Zhang
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Li Shao
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Jiong Zhou
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Jie Yang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Guping Tang
- Department of Chemistry, Institute of Chemical Biology and Pharmaceutical Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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92
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Huang Z, Zhang H, Bai H, Bai Y, Wang S, Zhang X. Polypseudorotaxane Constructed from Cationic Polymer with Cucurbit[7]uril for Controlled Antibacterial Activity. ACS Macro Lett 2016; 5:1109-1113. [PMID: 35658190 DOI: 10.1021/acsmacrolett.6b00568] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This letter is aimed to develop a general strategy to fabricate polypseudorotaxanes with controlled antibacterial activity based on cationic polymers. As a proof of concept, the commercially available antibacterial cationic polymer, ε-poly-l-lysine hydrochloride, was chosen for the demonstration. Using host-guest chemistry, cucurbit[7]uril (CB[7]), a water-soluble macrocyclic host, was employed to bind with the positive charge and hydrophobic component on ε-poly-l-lysine hydrochlorides for antibacterial regulation. In this way, by tuning the ratio of CB[7] to the cationic polymer, the antibacterial polypseudorotaxane can be obtained, and the antibacterial efficiency can be well tuned from 5% to 100%. This line of research will enrich the field of cationic polymers and polypseudorotaxanes with important functions on precise control over antibacterial activity.
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Affiliation(s)
- Zehuan Huang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China
| | - Hongyi Zhang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China
- Department
of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2084, United States
| | - Haotian Bai
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Organic
Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Yunhao Bai
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China
| | - Shu Wang
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Organic
Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Xi Zhang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China
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93
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Gangopadhyay M, Maity A, Dey A, Das A. [2]Pseudorotaxane Formation with FRET Based Luminescence Response: Demonstration of Boolean Operations through Self-Sorting on Solid Surface. J Org Chem 2016; 81:8977-8987. [DOI: 10.1021/acs.joc.6b01631] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Monalisa Gangopadhyay
- Organic
Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi
Bhabha Road, Pune, Maharashtra 411008, India
| | - Arunava Maity
- Organic
Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi
Bhabha Road, Pune, Maharashtra 411008, India
| | - Ananta Dey
- Organic
Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi
Bhabha Road, Pune, Maharashtra 411008, India
| | - Amitava Das
- Organic
Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi
Bhabha Road, Pune, Maharashtra 411008, India
- CSIR-Central Salt & Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar,Gujarat 364002, India
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94
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Li Z, Zheng Z, Su S, Yu L, Wang X. Hydroxypropyl-β-CD vs. its α-homologue for a 3D modified polyrotaxane network formation and properties: the relationship between modified CD and polymer revealed through comparison. SOFT MATTER 2016; 12:7089-7101. [PMID: 27501463 DOI: 10.1039/c6sm01368f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The threading mechanism of the hydroxypropyl-cyclodextrin (Hy-CD)/tetrahedron-like poly(ethylene glycol) (tetra-PEG) based host-guest complex and the relationship between Hy-CD and poly(ethylene oxide) (PEO) in the three-dimensional modified polyrotaxane (PR) formed by the complex were revealed through the comparison between Hy-β-CD/tetra-PEG and Hy-α-CD/tetra-PEG based systems from the macroscopic material view to the microscopic molecular view. The complexation between Hy-CD and tetra-PEG in water experiences a threading-dethreading-rethreading process which is controlled by the intermolecular interaction intensity or molecular hindrance depending on the feed ratio of Hy-CD to tetra-PEG. In the 3D modified PR, the methyl group of the Hy part on one Hy-CD can insert into the cavity of the adjacent Hy-CD and interacts with both the interior surface of the cavity and the PEO segment within the cavity if the cavity of Hy-CD is large enough. The threaded Hy-CD in the PR straightens the chain of PEO and suppresses the segment motion of the PEO. With the decrease of the cavity size of Hy-CD, the degree of suppression on the segment motion of PEO increases. Hy-CD threaded on the PEO chain can also deform when the 3D modified PR is compressed, and the degree of deformation increases with the increase of the cavity size of Hy-CD. These results of the modified CD/PEG based complex system set it apart from the unmodified CD/PEG based one, and reveal the structure-property relationship of this new type of Hy-CD/tetra-PEG based 3D modified PR material.
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Affiliation(s)
- Zhao Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China.
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95
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Tardy BL, Tan S, Dam HH, Ejima H, Blencowe A, Qiao GG, Caruso F. Nanoparticles assembled via pH-responsive reversible segregation of cyclodextrins in polyrotaxanes. NANOSCALE 2016; 8:15589-15596. [PMID: 27509868 DOI: 10.1039/c6nr04841b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Supramolecular polymers with monomers bound together by secondary interactions, such as polyrotaxanes (PRXs), consisting of alpha cyclodextrin (αCD) threaded onto poly(ethylene glycol) (PEG), have attracted interest as a result of their ability to overcome physical limitations present in conventional, covalently structured polymers. Herein, we describe the formation of pH-responsive supramolecular assemblies from carboxyethylester bearing αCD and PEG PRXs. These PRXs were formed using PEG of Mw 20 kDa and a threading degree of 28%. Upon charge neutralisation the threaded αCDs co-localise, resulting in aggregation of the PRXs and the formation of a suspension by self-assembly. This process is shown to be reversible and possible via the mobility of CDs along the PEG guest chain. As a result of the inherent properties of PRXs, such as enhanced multivalent interactions and degradation, these responsive supramolecular polymers are expected to be of interest in fields where PRX-based materials have already found application, including paints, self-healing materials, surface coatings, and polymer therapeutics.
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Affiliation(s)
- Blaise L Tardy
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
| | - Shereen Tan
- Polymer Science Group, Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Henk H Dam
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
| | - Hirotaka Ejima
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
| | - Anton Blencowe
- School of Pharmacy and Medical Sciences, Division of Health Sciences, The University of South Australia, Adelaide, SA 5001, Australia
| | - Greg G Qiao
- Polymer Science Group, Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Frank Caruso
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
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96
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López-Moreno A, Nieto-Ortega B, Moffa M, de Juan A, Bernal MM, Fernández-Blázquez JP, Vilatela JJ, Pisignano D, Pérez EM. Threading through Macrocycles Enhances the Performance of Carbon Nanotubes as Polymer Fillers. ACS NANO 2016; 10:8012-8. [PMID: 27454946 PMCID: PMC4997533 DOI: 10.1021/acsnano.6b04028] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 07/25/2016] [Indexed: 05/03/2023]
Abstract
In this work, we study the reinforcement of polymers by mechanically interlocked derivatives of single-walled carbon nanotubes (SWNTs). We compare the mechanical properties of fibers made of polymers and of composites with pristine SWNTs, mechanically interlocked derivatives of SWNTs (MINTs), and the corresponding supramolecular models. Improvements of both Young's modulus and tensile strength of up to 200% were observed for the polystyrene-MINT samples with an optimized loading of just 0.01 wt %, while the supramolecular models with identical chemical composition and loading showed negligible or even detrimental influence. This behavior is found for three different types of SWNTs and two types of macrocycles. Molecular dynamics simulations show that the polymer adopts an elongated conformation parallel to the SWNT when interacting with MINT fillers, irrespective of the macrocycle chemical nature, whereas a more globular structure is taken upon facing with either pristine SWNTs or supramolecular models. The MINT composite architecture thus leads to a more efficient exploitation of the axial properties of the SWNTs and of the polymer chain at the interface, in agreement with experimental results. Our findings demonstrate that the mechanical bond imparts distinctive advantageous properties to SWNT derivatives as polymer fillers.
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Affiliation(s)
- Alejandro López-Moreno
- IMDEA
Nanoscience, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049 Madrid, Spain
| | - Belén Nieto-Ortega
- IMDEA
Nanoscience, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049 Madrid, Spain
| | - Maria Moffa
- Istituto
Nanoscienze-CNR, Euromediterranean Center of Nanomaterial Modelling
and Technology (ECMT), via Arnesano, 73100 Lecce, Italy
| | - Alberto de Juan
- IMDEA
Nanoscience, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049 Madrid, Spain
| | - M. Mar Bernal
- IMDEA
Nanoscience, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049 Madrid, Spain
| | | | | | - Dario Pisignano
- Istituto
Nanoscienze-CNR, Euromediterranean Center of Nanomaterial Modelling
and Technology (ECMT), via Arnesano, 73100 Lecce, Italy
- Dipartimento
di Matematica e Fisica “Ennio De Giorgi”, Università del Salento, via Arnesano, 73100 Lecce, Italy
| | - Emilio M. Pérez
- IMDEA
Nanoscience, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049 Madrid, Spain
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97
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Dergunov SA, Ehterami N, Pinkhassik E. Rotaxane‐Like Structures Threaded through the Pores of Hollow Porous Nanocapusles. Chemistry 2016; 22:14137-40. [DOI: 10.1002/chem.201602731] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Sergey A. Dergunov
- Department of Chemistry University of Connecticut 55 North Eagleville Road Storrs CT 06269 (USA)
| | - Nasim Ehterami
- Department of Chemistry Saint Louis University 3501 Laclede Avenue St. Louis MO 63103 USA
| | - Eugene Pinkhassik
- Department of Chemistry University of Connecticut 55 North Eagleville Road Storrs CT 06269 (USA)
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98
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A Versatile Axle for the Construction of Disassemblage Rotaxanes. Molecules 2016; 21:molecules21081043. [PMID: 27517897 PMCID: PMC6274001 DOI: 10.3390/molecules21081043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 08/02/2016] [Accepted: 08/04/2016] [Indexed: 11/23/2022] Open
Abstract
Rotaxanes are unique mechanical devices that hold great promise as sensors. We report on two new rotaxanes that contain an acid or base sensitive trigger and readily disassemble in a wide range of environments. Disassemblage was observed under TLC and 1H-NMR analysis. The axle is highly charged, which enhances solubility in aqueous environments, and can be readily derivatized with sensor components. The trigger was swapped in a one-pot method, which is promising for the rapid production of a series of sensors.
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99
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100
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Poloxamer-hydroxyethyl cellulose-α-cyclodextrin supramolecular gels for sustained release of griseofulvin. Int J Pharm 2016; 500:11-9. [DOI: 10.1016/j.ijpharm.2016.01.015] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/07/2016] [Accepted: 01/08/2016] [Indexed: 01/24/2023]
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