4
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Li H, Jin Y, Fan B, Lai S, Sun X, Qi R. Aqueous Self-Assembly of Y-Shaped Amphiphilic Block Copolymers into Giant Vesicles. Macromol Rapid Commun 2017; 38. [PMID: 28166373 DOI: 10.1002/marc.201600646] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 12/12/2016] [Indexed: 11/07/2022]
Abstract
The preparation and aqueous self-assembly of newly Y-shaped amphiphilic block polyurethane (PUG) copolymers are reported here. These amphiphilic copolymers, designed to have two hydrophilic poly(ethylene oxide) (PEO) tails and one hydrophobic alkyl tail via a two-step coupling reaction, can self-assemble into giant unilamellar vesicles (GUVs) (diameter ≥ 1000 nm) with a direct dissolution method in aqueous solution, depending on their Y-shaped structures and initial concentrations. More interesting, the copolymers can self-assemble into various distinct nano-/microstructures, such as spherical micelles, small vesicles, and GUVs, with the increase of their concentrations. The traditional preparation methods of GUVs generally need conventional amphiphilic molecules and additional complicated conditions, such as alternating electrical field, buffer solution, or organic solvent. Therefore, the self-assembly of Y-shaped PUGs with a direct dissolution method in aqueous solution demonstrated in this study supplies a new clue to fabricate GUVs based on the geometric design of amphiphilic polymers.
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Affiliation(s)
- Hanping Li
- Key Laboratory of Leather Chemistry and Engineering, Sichuan University, Ministry of Education, Chengdu, 610065, China.,National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, 610065, China
| | - Yong Jin
- Key Laboratory of Leather Chemistry and Engineering, Sichuan University, Ministry of Education, Chengdu, 610065, China.,National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, 610065, China
| | - Baozhu Fan
- Chengdu Institute of Organic Chemistry, Chinese Academy of Science, Center of Polymer Science and Technology, Chengdu, 610041, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shuangquan Lai
- Key Laboratory of Leather Chemistry and Engineering, Sichuan University, Ministry of Education, Chengdu, 610065, China.,National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, 610065, China
| | - Xiaopeng Sun
- Key Laboratory of Leather Chemistry and Engineering, Sichuan University, Ministry of Education, Chengdu, 610065, China.,National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, 610065, China
| | - Rui Qi
- Chengdu Institute of Organic Chemistry, Chinese Academy of Science, Center of Polymer Science and Technology, Chengdu, 610041, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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5
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Ebata T, Inokuchi Y. Laser Spectroscopic Study of Cold Gas-Phase Host-Guest Complexes of Crown Ethers. CHEM REC 2016; 16:1034-53. [DOI: 10.1002/tcr.201500287] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Takayuki Ebata
- Department of Chemistry, Graduate School of Science; Hiroshima University; Higashi-Hiroshima 739-8526 Japan
| | - Yoshiya Inokuchi
- Department of Chemistry, Graduate School of Science; Hiroshima University; Higashi-Hiroshima 739-8526 Japan
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6
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Abstract
Inclusion complex formation between hollow circular compounds, e.g. crown ethers, and an ionic liquid, 1-methyl-3-octylimidazolium tetrafluoroborate, in acetonitrile solvent is studied by means of conductivity measurements, IR and NMR spectra.
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Affiliation(s)
- Siti Barman
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
| | - Mahendra Nath Roy
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
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7
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Inokuchi Y, Haino T, Sekiya R, Morishima F, Dedonder C, Féraud G, Jouvet C, Ebata T. UV photodissociation spectroscopy of cryogenically cooled gas phase host–guest complex ions of crown ethers. Phys Chem Chem Phys 2015; 17:25925-34. [DOI: 10.1039/c5cp01960e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Crown ethers show a dramatic effect on the electronic spectra and fragmentation patterns of guest species.
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Affiliation(s)
- Yoshiya Inokuchi
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima 739-8526
- Japan
| | - Takeharu Haino
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima 739-8526
- Japan
| | - Ryo Sekiya
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima 739-8526
- Japan
| | - Fumiya Morishima
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima 739-8526
- Japan
| | - Claude Dedonder
- CNRS
- Aix Marseille Université
- Physique des Interactions Ioniques et Moléculaires (PIIM) UMR 7345
- 13397 Marseille Cedex
- France
| | - Géraldine Féraud
- CNRS
- Aix Marseille Université
- Physique des Interactions Ioniques et Moléculaires (PIIM) UMR 7345
- 13397 Marseille Cedex
- France
| | - Christophe Jouvet
- CNRS
- Aix Marseille Université
- Physique des Interactions Ioniques et Moléculaires (PIIM) UMR 7345
- 13397 Marseille Cedex
- France
| | - Takayuki Ebata
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima 739-8526
- Japan
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8
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Synthesis and Characterization of Some Nonionic Bolaamphiphiles. J SURFACTANTS DETERG 2014. [DOI: 10.1007/s11743-014-1602-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Valente AJM, Söderman O. The formation of host-guest complexes between surfactants and cyclodextrins. Adv Colloid Interface Sci 2014; 205:156-76. [PMID: 24011696 DOI: 10.1016/j.cis.2013.08.001] [Citation(s) in RCA: 133] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 08/01/2013] [Accepted: 08/01/2013] [Indexed: 11/15/2022]
Abstract
Cyclodextrins are able to act as host molecules in supramolecular chemistry with applications ranging from pharmaceutics to detergency. Among guest molecules surfactants play an important role with both fundamental and practical applications. The formation of cyclodextrin/surfactant host-guest compounds leads to an increase in the critical micelle concentration and in the solubility of surfactants. The possibility of changing the balance between several intermolecular forces, and thus allowing the study of, e.g., dehydration and steric hindrance effects upon association, makes surfactants ideal guest molecules for fundamental studies. Therefore, these systems allow for obtaining a deep insight into the host-guest association mechanism. In this paper, we review the influence on the thermodynamic properties of CD-surfactant association by highlighting the effect of different surfactant architectures (single tail, double-tailed, gemini and bolaform), with special emphasis on cationic surfactants. This is complemented with an assessment of the most common analytical techniques used to follow the association process. The applied methods for computation of the association stoichiometry and stability constants are also reviewed and discussed; this is an important point since there are significant discrepancies and scattered data for similar systems in the literature. In general, the surfactant-cyclodextrin association is treated without reference to the kinetics of the process. However, there are several examples where the kinetics of the process can be investigated, in particular those where volumes of the CD cavity and surfactant (either the tail or in special cases the head group) are similar in magnitude. This will also be critically reviewed.
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Affiliation(s)
- Artur J M Valente
- Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal.
| | - Olle Söderman
- Division of Physical Chemistry, Center for Chemistry and Chemical Engineering, Lund University, Lund, Sweden
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10
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Inokuchi Y, Kusaka R, Ebata T, Boyarkin OV, Rizzo TR. Laser Spectroscopic Study of Cold Host–Guest Complexes of Crown Ethers in the Gas Phase. Chemphyschem 2012. [DOI: 10.1002/cphc.201200746] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yoshiya Inokuchi
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi‐Hiroshima 739‐8526 (Japan)
| | - Ryoji Kusaka
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi‐Hiroshima 739‐8526 (Japan)
| | - Takayuki Ebata
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi‐Hiroshima 739‐8526 (Japan)
| | - Oleg V. Boyarkin
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Lausanne 1015 (Switzerland)
| | - Thomas R. Rizzo
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Lausanne 1015 (Switzerland)
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11
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Sabah K, Heidelberg T, Hashim R. Novel crown ethers on glucose based glycolipids. Carbohydr Res 2011; 346:891-6. [DOI: 10.1016/j.carres.2011.03.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 02/21/2011] [Accepted: 03/03/2011] [Indexed: 11/26/2022]
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12
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Kusaka R, Kokubu S, Inokuchi Y, Haino T, Ebata T. Structure of host–guest complexes between dibenzo-18-crown-6 and water, ammonia, methanol, and acetylene: Evidence of molecular recognition on the complexation. Phys Chem Chem Phys 2011; 13:6827-36. [DOI: 10.1039/c0cp02523b] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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