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States of Aggregation and Phase Transformation Behavior of Metallosurfactant Complexes by Hexacyanoferrate(II): Thermodynamic and Kinetic Investigation of ETR in Ionic Liquids and Liposome Vesicles. Biomimetics (Basel) 2022; 7:biomimetics7040221. [PMID: 36546921 PMCID: PMC9775953 DOI: 10.3390/biomimetics7040221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 12/03/2022] Open
Abstract
Electronic absorption spectroscopy was used to study the ETR of surfactant-cobalt(III) complexes containing imidazo[4,5-f][1,10]phenanthroline, dipyrido[3,2-d:2'-3'-f]quinoxaline and dipyrido[3,2-a:2',4'-c](6,7,8,9-tetrahydro)phenazine ligands by using ferrocyanide ions in unilamellar vesicles of dipalmitoylphosphotidylcholine (DPPC) and 1-butyl-3-methylimidazolium bromide ((BMIM)Br), at different temperatures under pseudo-first-order conditions using an excess of the reductant. The reactions were found to be second-order and the electron transfer is postulated as occurring in the outer sphere. The rate constant for the electron transfer reactions was found to increase with increasing concentrations of ionic liquids. Besides these, the effects of surfactant complex ions on liposome vesicles in these same reactions have also been studied on the basis of hydrophobicity. We observed that, below the phase transition temperature, there is an increasing amount of surfactant-cobalt(III) complexes expelled from the interior of the vesicle membrane through hydrophobic effects, while above the phase transition temperature, the surfactant-cobalt(III) complexes are expelled from the interior to the exterior surface of the vesicle. Kinetic data and activation parameters are interpreted in respect of an outer-sphere electron transfer mechanism. By assuming the existence of an outer-sphere mechanism, the results have been clarified based on the presence of hydrophobicity, and the size of the ligand increases from an ip to dpqc ligand and the reactants become oppositely charged. In all these media, the ΔS# values are recognized as negative in their direction in all the concentrations of complexes employed, indicative of a more ordered structure of the transition state. This is compatible with a model in which these complexes and [Fe(CN)6]4- ions bind to the DPPC in the transition state. Thus, the results have been interpreted based on the self-aggregation, hydrophobicity, charge densities of the co-ligand and the reactants with opposite charges.
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Khodaverdi E, Eisvand F, Nezami MS, Shiadeh SNR, Kamali H, Hadizadeh F. Injectable In-Situ Forming Depot of Doxycycline Hyclate/α-Cyclodextrin Complex Using PLGA for Periodontitis Treatment: Preparation, Characterization, and In-Vitro Evaluation. Curr Drug Deliv 2020; 18:729-740. [PMID: 33155908 DOI: 10.2174/1567201817999201103195104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/29/2020] [Accepted: 09/25/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Doxycycline (DOX) is used in treating a bacterial infection, especially for periodontitis treatment. OBJECTIVE To reduce irritation of DOX for subgingival administration and increase the chemical stability and against enzymatic, the complex of α-cyclodextrin with DOX was prepared and loaded into injectable in situ forming implant based on PLGA. METHODS FTIR, molecular docking studies, X-ray diffraction, and differential scanning calorimetry was performed to characterize the DOX/α-cyclodextrin complex. Finally, the in-vitro drug release and modeling, morphological properties, and cellular cytotoxic effects were also evaluated. RESULTS The stability of DOX was improved with complex than pure DOX. The main advantage of the complex is the almost complete release (96.31 ± 2.56 %) of the drug within 14 days of the implant, whereas in the formulation containing the pure DOX and the physical mixture the DOX with α-cyclodextrin release is reached to 70.18 ± 3.61 % and 77.03 ± 3.56 %, respectively. This trend is due to elevate of DOX stability in the DOX/ α-cyclodextrin complex form within PLGA implant that confirmed by the results of stability. CONCLUSION Our results were indicative that the formulation containing DOX/α-cyclodextrin complex was biocompatible and sustained-release with minimum initial burst release.
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Affiliation(s)
- Elham Khodaverdi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Farhad Eisvand
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Sina Nezami
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyedeh Nesa Rezaeian Shiadeh
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Kamali
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Farzin Hadizadeh
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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Microheterogeneous mediated electron transfer reaction (ETR) of surfactant cobalt(III) complexes by Fe2+: Effect of pyridine substituent as co ligand. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2014.11.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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4
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Diget JS, Städe LW, Nielsen TT. Direct synthesis of well-defined zwitterionic cyclodextrin polymers via atom transfer radical polymerization. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.03.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Akbari S, Khoshnood RS, Hatami E. Study of Kryptofix5 Complexation with La3+ Cation in Several Individual and Binary Nonaqueous Solvents Using Conductometric Method. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024417130179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Rahimi M, Mobedi H, Behnamghader A. In situ-forming PLGA implants loaded with leuprolide acetate/β-cyclodextrin complexes: mathematical modelling and degradation. J Microencapsul 2016; 33:355-64. [DOI: 10.1080/02652048.2016.1194905] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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7
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Kim SH, Sharker SM, In I, Park SY. Surface patterned pH-sensitive fluorescence using β-cyclodextrin functionalized poly(ethylene glycol). Carbohydr Polym 2016; 147:436-443. [PMID: 27178950 DOI: 10.1016/j.carbpol.2016.04.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 04/07/2016] [Accepted: 04/08/2016] [Indexed: 12/13/2022]
Abstract
This paper reports the development of a pH-responsive molecular pattern that shows specific and selective affinity for particular host-guest interactions, and its use as a pH fluorescent sensor. The pH-responsive boronate ester is formed via interactions between the diol group of β-cyclodextrin (CD) and phenylboronic acid of poly(ethylene glycol), and is strategically designed to allow reversible formation of a molecular lining pattern. Printing on a versatile substrate provides a method to monitor the positioning of different molecules by using a pH-responsive boronate ester, allowing specific host-guest interactions on any surface. Confocal laser scanning microscopy, fluorescence spectroscopy, and (1)H NMR results indicate that the assembled CD monolayer can be removed by washing with an acidic pH buffer, demonstrating the presence of a boronate ester connective bridge, which is acid labile. Therefore, visualization of the pH-responsive fluorescence sensor using a rhodamine-CD complex allows straightforward discrimination between different molecules on any substrate, thus facilitating application of this sensor in clinical diagnostics and environmental monitoring.
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Affiliation(s)
- Sung Han Kim
- Department of IT Convergence, Korea National University of Transportation, Chungju 380-702, Republic of Korea
| | - Shazid Md Sharker
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-702, Republic of Korea
| | - Insik In
- Department of IT Convergence, Korea National University of Transportation, Chungju 380-702, Republic of Korea; Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju 380-702, Republic of Korea
| | - Sung Young Park
- Department of IT Convergence, Korea National University of Transportation, Chungju 380-702, Republic of Korea; Department of Chemical and Biological Engineering, Korea National University of Transportation, Chungju 380-702, Republic of Korea.
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Rahimi M, Mobedi H, Behnamghader A. In situforming poly(lactic acid-co-glycolic acid) implants containing leuprolide acetate/β-cyclodextrin complexes: preparation, characterization, andin vitrodrug release. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2015.1055633] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Sugumar K, Nagaraj K, Murugan KS, Thangamuniyandi P, Sakthinathan S, Vijayakumar P. A comparative study on the electron transfer reaction (ETR) of surfactant cobalt(iii) complexes of aliphatic/aromatic ligands in micro heterogeneous media: a thermodynamic approach. RSC Adv 2015. [DOI: 10.1039/c5ra02829a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The electron transfer reaction between different surfactant cobalt(iii) complex ions and Fe2+ ions in micelles as well as β-cyclodextrin was studied at different temperatures using a spectrophotometry method.
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Affiliation(s)
- Kannan Sugumar
- School of Chemistry
- Bharathidasan University
- Tiruchirapalli 620024
- India
| | - Karuppiah Nagaraj
- School of Chemistry
- Bharathidasan University
- Tiruchirapalli 620024
- India
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Affiliation(s)
- Erno Karjalainen
- Laboratory
of Polymer Chemistry,
Department of Chemistry, University of Helsinki, PB 55, 00014 Helsinki, Finland
| | - Vladimir Aseyev
- Laboratory
of Polymer Chemistry,
Department of Chemistry, University of Helsinki, PB 55, 00014 Helsinki, Finland
| | - Heikki Tenhu
- Laboratory
of Polymer Chemistry,
Department of Chemistry, University of Helsinki, PB 55, 00014 Helsinki, Finland
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11
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Rahimi M, Mobedi H, Behnamghader A. Aqueous stability of leuprolide acetate: effect of temperature, dissolved oxygen, pH and complexation with β-cyclodextrin. Pharm Dev Technol 2014; 21:108-15. [PMID: 25331295 DOI: 10.3109/10837450.2014.971377] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In the present research, the aqueous stability of leuprolide acetate (LA) in phosphate buffered saline (PBS) medium was studied (pH = 2.0-7.4). For this purpose, the effect of temperature, dissolved oxygen and pH on the stability of LA during 35 days was investigated. Results showed that the aqueous stability of LA was higher at low temperatures. Degassing of the PBS medium partially increased the stability of LA at 4 °C, while did not change at 37 °C. The degradation of LA was accelerated at lower pH values. In addition, complexes of LA with different portions of β-cyclodextrin (β-CD) were prepared through freeze-drying procedure and characterized by Fourier transform infrared (FTIR) and differential scanning calorimetry (DSC) analyses. Studying their aqueous stability at various pH values (2.0-7.4) showed LA/β-CD complexes exhibited higher stability when compared with LA at all pH values. The stability of complexes was also improved by increasing the portion of LA/β-CD up to 1/10.
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Affiliation(s)
- Mehdi Rahimi
- a Department of Biomedical Engineering, Science and Research Branch , Islamic Azad University , Tehran , Iran
| | - Hamid Mobedi
- b Department of Novel Drug Delivery Systems , Iran Polymer and Petrochemical Institute , Tehran , Iran , and
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Nagaraj K, Sakthinathan S, Arunachalam S. Thermodynamics and kinetic investigation of electron transfer reactions of surfactant cobalt(iii) complexes containing diimine ligands with iron(ii) in the presence of liposome vesicles and amphiphilic salt media. RSC Adv 2014. [DOI: 10.1039/c4ra07404a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The kinetics of reductions of surfactant cobalt(iii) complexes by iron(ii) in liposome vesicles (DPPC) and amphiphilic salt ((BMIM)Br) were studied at different temperatures by UV-Vis absorption spectroscopy method under pseudo first order conditions using an excess of the reductant.
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Affiliation(s)
- Karuppiah Nagaraj
- School of Chemistry
- Bharathidasan University
- Tiruchirapalli 620024, India
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13
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Nagaraj K, Arunachalam S. Synthesis and electron transfer kinetics of a surfactant–cobalt(III) complex: effects of micelles, β-cyclodextrin, and ionic liquids. TRANSIT METAL CHEM 2013. [DOI: 10.1007/s11243-013-9733-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Nagaraj K, Arunachalam S. Synthesis, CMC Determination, and Outer Sphere Electron Transfer Reaction of the Surfactant–Complex Ion, cis-[Co(en)2(4CNP)(DA)]3+ with [Fe(CN)6]4– in Micelles, β-cyclodextrin, and Liposome (Dipalmidoylphosphotidylcholine) Vesicles. Aust J Chem 2013. [DOI: 10.1071/ch13099] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The surfactant cobalt(iii) complex, cis-[Co(en)2(4CNP)(DA)](ClO4)3, en = ethylenediamine, 4CNP = 4-cyanopyridine, DA = dodecylamine, was synthesized and characterized by physico-chemical and spectroscopic methods. The critical micelle concentration value of this complex was obtained from the conductivity measurements at different temperatures to evaluate, ΔGm0, ΔHm0, and ΔSm0. The kinetics of outer sphere electron transfer reaction of this complex with Fe(CN)64– ion in micelles, β-cyclodextrin as well as in liposome vesicles media were studied. The rate constant increases with increase in the concentration of micelles but decreases in presence of β-cyclodextrin, which is a good structure breaker of micelles. In liposome vesicles media the rate constant is different at below and above phase transition temperature. The results have been explained based on the hydrophobic effect, the presence of pyridine ligand containing 4-cyano substituent and the reactants with opposite charge.
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Gonsior N, Ritter H. UCST Behavior of Cyclodextrin-Containing Poly(Pseudo-Betaines) Based on Supramolecular Structures. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201100336] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Appel EA, del Barrio J, Loh XJ, Scherman OA. Supramolecular polymeric hydrogels. Chem Soc Rev 2012; 41:6195-214. [DOI: 10.1039/c2cs35264h] [Citation(s) in RCA: 865] [Impact Index Per Article: 72.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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17
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An W, Zhang H, Sun L, Hao A, Hao J, Xin F. Reversible vesicles based on one and two head supramolecular cyclodextrin amphiphile induced by methanol. Carbohydr Res 2010; 345:914-21. [DOI: 10.1016/j.carres.2010.02.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2009] [Accepted: 02/01/2010] [Indexed: 11/30/2022]
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van de Manakker F, Vermonden T, van Nostrum CF, Hennink WE. Cyclodextrin-based polymeric materials: synthesis, properties, and pharmaceutical/biomedical applications. Biomacromolecules 2010; 10:3157-75. [PMID: 19921854 DOI: 10.1021/bm901065f] [Citation(s) in RCA: 425] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This review describes the synthesis, properties, and, in particular, biomedical and pharmaceutical applications of an upcoming class of polymeric networks and assemblies based on cyclodextrins (CDs). CDs are cyclic oligosaccharides composed of alpha-1,4-coupled d-glucose units, which contain a hydrophobic internal cavity that can act as a host for various, generally lipophilic, guest molecules. Because of this unique physicochemical property, commonly referred to as inclusion complex formation, CDs have often been used to design polymeric materials, such as hydrogels and nanoparticles. Polymeric systems based on CDs exhibit unique characteristics in terms of mechanical properties, stimuli-responsiveness, and drug release characteristics. In this contribution, first, an outline is given of covalently cross-linked polymeric networks in which CD moieties were structurally incorporated to modulate the network strength as well as the complexation and release of low molecular weight drugs. Second, physically assembled polymeric systems are discussed, of which the formation is accomplished by inclusion complexes between polymer-conjugated CDs and various guest molecule-derivatized polymers. Due to their physical nature, these polymeric systems are sensitive to external stimuli, such as temperature changes, shear forces and the presence of competing CD-binding molecules, which can be exploited to use these systems as injectable, in situ gelling devices. In recent years, many interesting CD-containing polymeric systems have been described in literature. These systems have to be optimized and extensively evaluated in preclinical studies concerning their safety and efficacy, making future clinical applications of these materials in the biomedical and pharmaceutical field feasible.
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Affiliation(s)
- Frank van de Manakker
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Sorbonnelaan 16, P.O. Box 80082, 3508 TB Utrecht, The Netherlands
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Kaya E, Mathias LJ. Synthesis and characterization of physical crosslinking systems based on cyclodextrin inclusion/host-guest complexation. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.23771] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Affiliation(s)
- Akira Harada
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Akihito Hashidzume
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Hiroyasu Yamaguchi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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pH Sensitive supramolecular assembling system between a new linear water soluble β-cyclodextrin terpolymer and an amphiphilic poly(ethylene oxide). Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2008.11.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Sun S, Chen X, Liu J, Yan J, Fang Y. A novel two-component physical gel based on interaction between poly(acrylic acid) and 6-deoxy-6-amino-β-cyclodextrin. POLYM ENG SCI 2008. [DOI: 10.1002/pen.21225] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Miwa S, Ohnishi-Kameyama M, Kobayashi S. Formation of .DELTA.-Tocopherol-cyclodextrin Complexes by the Action of Cyclodextrin Glucanotransferase. J Appl Glycosci (1999) 2008. [DOI: 10.5458/jag.55.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Dimitrov I, Trzebicka B, Müller AH, Dworak A, Tsvetanov CB. Thermosensitive water-soluble copolymers with doubly responsive reversibly interacting entities. Prog Polym Sci 2007. [DOI: 10.1016/j.progpolymsci.2007.07.001] [Citation(s) in RCA: 540] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Choi HS, Takahashi A, Ooya T, Yui N. Molecular-recognition and binding properties of cyclodextrin-conjugated polyrotaxanes. Chemphyschem 2007; 7:1668-70. [PMID: 16807959 DOI: 10.1002/cphc.200600147] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hak Soo Choi
- School of Materials Science and the 21st Century COE Program, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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Studies on the conformational behavior of acenaphthylene-labeled poly(acrylamide-co-acryloyl-6-deoxy-6-amino-β-cyclodextrin). Colloid Polym Sci 2007. [DOI: 10.1007/s00396-006-1634-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Li N, Liu J, Zhao X, Gao Y, Zheng L, Zhang J, Yu L. Complex formation of ionic liquid surfactant and β-cyclodextrin. Colloids Surf A Physicochem Eng Asp 2007. [DOI: 10.1016/j.colsurfa.2006.06.023] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Host-Guest Interactions betweenN,N′-Bis(ferrocenylmethylene)-Diaminobutane and Benzenetetracarboxylic Dianhydride Bridged Bis(β-cyclodextrin)s. CHINESE J CHEM 2006. [DOI: 10.1002/cjoc.200690316] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Giammona G, Cavallaro G, Maniscalco L, Craparo EF, Pitarresi G. Synthesis and characterisation of novel chemical conjugates based on α,β-polyaspartylhydrazide and β-cyclodextrins. Eur Polym J 2006. [DOI: 10.1016/j.eurpolymj.2006.05.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Choi HS, Ooya T, Yui N. One-Pot Synthesis of a Polyrotaxane via Selective Threading of a PEI-b-PEG-b-PEI Copolymer. Macromol Biosci 2006; 6:420-4. [PMID: 16761273 DOI: 10.1002/mabi.200600024] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A functional polyrotaxane of a PEI-b-PEG-b-PEI copolymer is synthesized in aqueous solution in a one-pot sequence. To obtain a polyrotaxane with PEG-block-selective inclusion complexes, the solution pH of the polypseudorotaxane is lowered to 4.4 in the presence of 9-anthraldehyde (AN), which triggers the expulsion of the alpha-cyclodextrins (alpha-CDs) from the flank PEI chains. Synthetic strategy of a block-selective polyrotaxane between a PEI-b-PEG-b-PEI copolymer and alpha-cyclodextrins.
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Affiliation(s)
- Hak Soo Choi
- School of Materials Science and the 21st Century COE Program, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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31
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Soluble hyperbranched copolymer via initiator-fragment incorporation radical copolymerization using a trivinyl monomer. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.02.096] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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32
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Sato T, Nomura K, Hirano T, Seno M. Hyperbranched Polymer through Initiator-Fragment Incorporation Radical Copolymerization of Divinyl Adipate with Allyl Acetate: Synthesis, Characterization, Dye Solubilization, Metal-Nanoparticle Stabilization, and Porous Film Formation. Polym J 2006. [DOI: 10.1295/polymj.38.240] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Affiliation(s)
- Gerhard Wenz
- Organische Makromolekulare Chemie, Saarland University, Geb. C4.2, D-66123 Saarbrücken, Germany.
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Choi HS, Yamashita A, Ooya T, Yui N, Akita H, Kogure K, Ito R, Harashima H. Sunflower-shaped cyclodextrin-conjugated poly(epsilon-lysine) polyplex as a controlled intracellular trafficking device. Chembiochem 2006; 6:1986-90. [PMID: 16222730 DOI: 10.1002/cbic.200500242] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hak Soo Choi
- School of Materials Science and the 21st Century COE Program, Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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Choi HS, Yui N. Design of rapidly assembling supramolecular systems responsive to synchronized stimuli. Prog Polym Sci 2006. [DOI: 10.1016/j.progpolymsci.2005.09.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Choi HS, Yamamoto K, Ooya T, Yui N. Synthesis of Poly(ɛ-lysine)-Grafted Dextrans and Their pH- and Thermosensitive Hydrogelation with Cyclodextrins. Chemphyschem 2005; 6:1081-6. [PMID: 15937894 DOI: 10.1002/cphc.200400598] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
To give pH sensitivity to a thermoreversible supramolecular-structured hydrogel system, poly(epsilon-lysine) (PL), as a cationic polymer, was grafted to dextran and used for inclusion complexation with alpha-cyclodextrins (alpha-CDs). The synthesized graft copolymer was characterized by 1H NMR spectroscopy, and the hydrogel formation was confirmed by X-ray diffraction and solid-state 13C NMR analysis. The hydrogelation was induced from a phase-separated structure of hydrated dextrans and hydrophobically aggregated inclusion complexes in buffer solution at pH 10.0. The prepared hydrogels showed thermoreversible gel-sol transitions as well as pH-sensitive phase transitions, which were recorded by the changes in UV/Vis transmittance. A rapid phase transition from gel to sol was observed upon decreasing the pH value to 4.0, which resulted from the dissociation process between the protonated guest polymer and alpha-CDs. The stimuli-responsive physical properties of the hydrogels were improved by modulating the degree of substitution of the grafted PL and the combination with alpha-CDs.
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Affiliation(s)
- Hak Soo Choi
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa 923-1292, Japan
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Galant C, Wintgens V, Amiel C, Auvray L. A Reversible Polyelectrolyte Involving a β-Cyclodextrin Polymer and a Cationic Surfactant. Macromolecules 2005. [DOI: 10.1021/ma050377v] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Phongtamrug S, Miyata M, Chirachanchai S. Concerted Contribution of Cu–O Coordination and Hydrogen Bonds inN,N-Bis(2-hydroxybenzyl)alkylamine–Copper–Solvent System. CHEM LETT 2005. [DOI: 10.1246/cl.2005.634] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Choi HS, Ooya T, Huh KM, Yui N. pH-Triggered Changes in Assembling Properties of β-Cyclodextrin-Conjugated Poly(ε-lysine) Complexes. Biomacromolecules 2005; 6:1200-4. [PMID: 15877334 DOI: 10.1021/bm0400729] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hak Soo Choi
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa 923-1292, Japan
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Choi HS, Takahashi A, Ooya T, Yui N. Structural Role of Guest Molecules in Rapid and Sensitive Supramolecular Assembling System Based on β-Cyclodextrin-Conjugated Poly(ε-lysine). Macromolecules 2004. [DOI: 10.1021/ma0487610] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hak Soo Choi
- School of Materials Science and the 21st Century COE Program, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Akihiro Takahashi
- School of Materials Science and the 21st Century COE Program, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Tooru Ooya
- School of Materials Science and the 21st Century COE Program, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Nobuhiko Yui
- School of Materials Science and the 21st Century COE Program, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa 923-1292, Japan
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Formation of soluble hyperbranched polymer through the initiator-fragment incorporation radical copolymerization of ethylene glycol dimethacrylate with N-methylmethacrylamide. POLYMER 2004. [DOI: 10.1016/j.polymer.2004.09.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Lecourt T, Sinaÿ P, Chassenieux C, Rinaudo M, Auzély-Velty R. Complexation between a Hydrophobically Modified Chitosan and Cyclodextrin Homodimers Singly or Doubly Connected through Their Primary Sides: Effects of Their Molecular Architecture on the Polymer Properties in Solution. Macromolecules 2004. [DOI: 10.1021/ma049822x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas Lecourt
- Ecole Normale Supérieure, Département de Chimie, UMR CNRS 8642 24, rue Lhomond, 75231 Paris, Cedex 05, France; Physicochimie des Polymères et des Milieux Dispersés, UMR CNRS 7615, ESPCI 10, rue Vauquelin 75231 Paris, Cedex 05, France; and Centre de Recherches sur les Macromolécules Végétales (CNRS), Université Joseph Fourier de Grenoble, BP 53, 38041 Grenoble Cedex, France
| | - Pierre Sinaÿ
- Ecole Normale Supérieure, Département de Chimie, UMR CNRS 8642 24, rue Lhomond, 75231 Paris, Cedex 05, France; Physicochimie des Polymères et des Milieux Dispersés, UMR CNRS 7615, ESPCI 10, rue Vauquelin 75231 Paris, Cedex 05, France; and Centre de Recherches sur les Macromolécules Végétales (CNRS), Université Joseph Fourier de Grenoble, BP 53, 38041 Grenoble Cedex, France
| | - Christophe Chassenieux
- Ecole Normale Supérieure, Département de Chimie, UMR CNRS 8642 24, rue Lhomond, 75231 Paris, Cedex 05, France; Physicochimie des Polymères et des Milieux Dispersés, UMR CNRS 7615, ESPCI 10, rue Vauquelin 75231 Paris, Cedex 05, France; and Centre de Recherches sur les Macromolécules Végétales (CNRS), Université Joseph Fourier de Grenoble, BP 53, 38041 Grenoble Cedex, France
| | - Marguerite Rinaudo
- Ecole Normale Supérieure, Département de Chimie, UMR CNRS 8642 24, rue Lhomond, 75231 Paris, Cedex 05, France; Physicochimie des Polymères et des Milieux Dispersés, UMR CNRS 7615, ESPCI 10, rue Vauquelin 75231 Paris, Cedex 05, France; and Centre de Recherches sur les Macromolécules Végétales (CNRS), Université Joseph Fourier de Grenoble, BP 53, 38041 Grenoble Cedex, France
| | - Rachel Auzély-Velty
- Ecole Normale Supérieure, Département de Chimie, UMR CNRS 8642 24, rue Lhomond, 75231 Paris, Cedex 05, France; Physicochimie des Polymères et des Milieux Dispersés, UMR CNRS 7615, ESPCI 10, rue Vauquelin 75231 Paris, Cedex 05, France; and Centre de Recherches sur les Macromolécules Végétales (CNRS), Université Joseph Fourier de Grenoble, BP 53, 38041 Grenoble Cedex, France
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Choi HS, Huh KM, Ooya T, Yui N. pH-Triggered Assembling System Using Cooperative Binding between Cyclodextrin-Conjugated Poly(ε-lysine)s and Anionic Guest in Aqueous Media. J Phys Chem B 2004. [DOI: 10.1021/jp037388f] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hak Soo Choi
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Kang Moo Huh
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Tooru Ooya
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Nobuhiko Yui
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa 923-1292, Japan
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Sato T, Higashida N, Hirano T, Seno M. Initiator-fragment incorporation radical copolymerization of divinylbenzene andN-isopropylacrylamide with dimethyl 2,2?-azobisisobutyrate: Formation of soluble hyperbranched polymer nanoparticle. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pola.11065] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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