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102
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Peng KY, Wang SW, Hua MY, Lee RS. Amphiphilic photocleavable block copolymers based on monomethyl poly(ethylene glycol) and poly(4-substituted-ε-caprolactone): synthesis, characterization, and cellular uptake. RSC Adv 2013. [DOI: 10.1039/c3ra42763c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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103
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Zhang Z, Ding J, Chen X, Xiao C, He C, Zhuang X, Chen L, Chen X. Intracellular pH-sensitive supramolecular amphiphiles based on host–guest recognition between benzimidazole and β-cyclodextrin as potential drug delivery vehicles. Polym Chem 2013. [DOI: 10.1039/c3py00141e] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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104
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Qin L, Yang H, Qin C, Xiang Z, Zhang M, Ding L, Yi T, Yang S. Guest induced morphological transformation from nanospheres to nanowires by hydrogen bond self-assembly. Dalton Trans 2013; 42:4790-4. [DOI: 10.1039/c3dt32830a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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105
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Li L, Wang ML, Chen Y, Jiang SC. Multifunctional covalently stabilized vesicles acting simultaneously as the template of gold nanoparticle cluster and the nanocarrier of guest molecules. J Colloid Interface Sci 2012; 387:146-52. [DOI: 10.1016/j.jcis.2012.08.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 08/02/2012] [Accepted: 08/03/2012] [Indexed: 10/28/2022]
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106
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Wang G, Wang C, Wang Z, Zhang X. H-shaped supra-amphiphiles based on a dynamic covalent bond. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:14567-14572. [PMID: 22985216 DOI: 10.1021/la303272b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The imine bond, a kind of dynamic covalent bond, is used to bind two bolaform amphiphiles together with spacers, yielding H-shaped supra-amphiphiles. Micellar aggregates formed by the self-assembly of the H-shaped supra-amphiphiles are observed. When pH is tuned down from basic to slightly acidic, the benzoic imine bond can be hydrolyzed, leading to the dissociation of H-shaped supra-amphiphiles. Moreover, H-shaped supra-amphiphiles have a lower critical micelle concentration than their building blocks, which is very helpful in enhancing the stability of the benzoic imine bond being hydrolyzed by acid. The surface tension isotherms of the H-shaped supra-amphiphiles with different spacers indicate their twisty conformation at a gas-water interface. The study of H-shaped supra-amphiphiles can enrich the family of amphiphiles, and moreover, the pH-responsiveness may make them apply to controlled or targetable drug delivery in a biological environment.
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Affiliation(s)
- Guangtong Wang
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, PR China
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107
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Uchman M, Štěpánek M, Prévost S, Angelov B, Bednár J, Appavou MS, Gradzielski M, Procházka K. Coassembly of Poly(ethylene oxide)-block-poly(methacrylic acid) and N-Dodecylpyridinium Chloride in Aqueous Solutions Leading to Ordered Micellar Assemblies within Copolymer Aggregates. Macromolecules 2012. [DOI: 10.1021/ma301510j] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mariusz Uchman
- Department of Physical and Macromolecular
Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Miroslav Štěpánek
- Department of Physical and Macromolecular
Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Sylvain Prévost
- Stranski Laboratorium für
Physikalische und Theoretische Chemie, Technische Universität Berlin, Straβe des 17. Juni 124, 10623 Berlin,
Germany
- Soft Matter Department, Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109
Berlin, Germany
| | - Borislav Angelov
- Institute
of Macromolecular
Chemistry, Academy of Sciences of the Czech Republic, Heyrovský Square 2, 16206 Prague 6, Czech Republic
| | - Jan Bednár
- First Faculty of Medicine,
Institute of Cellular Biology Albertov 4, Charles University in Prague, 128 01 Prague 2, Czech Republic
- LIPhy UMR 5588, Univ. Grenoble 1/CNRS, Grenoble F-38041, France
| | - Marie-Sousai Appavou
- Forschungszentrum Jülich GmbH, IFF-JCNS, Lichtenbergerstraße 1, D-85747
Garching, Germany
| | - Michael Gradzielski
- Stranski Laboratorium für
Physikalische und Theoretische Chemie, Technische Universität Berlin, Straβe des 17. Juni 124, 10623 Berlin,
Germany
| | - Karel Procházka
- Department of Physical and Macromolecular
Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
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108
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Fomina N, Sankaranarayanan J, Almutairi A. Photochemical mechanisms of light-triggered release from nanocarriers. Adv Drug Deliv Rev 2012; 64:1005-20. [PMID: 22386560 PMCID: PMC3395781 DOI: 10.1016/j.addr.2012.02.006] [Citation(s) in RCA: 344] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 02/16/2012] [Accepted: 02/16/2012] [Indexed: 12/18/2022]
Abstract
Over the last three decades, a handful of photochemical mechanisms have been applied to a large number of nanoscale assemblies that encapsulate a payload to afford spatio-temporal and remote control over activity of the encapsulated payload. Many of these systems are designed with an eye towards biomedical applications, as spatio-temporal and remote control of bioactivity would advance research and clinical practice. This review covers five underlying photochemical mechanisms that govern the activity of the majority of photoresponsive nanocarriers: 1. photo driven isomerization and oxidation, 2. surface plasmon absorption and photothermal effects, 3. photo driven hydrophobicity changes, 4. photo driven polymer backbone fragmentation and 5. photo driven de-crosslinking. The ways in which these mechanisms have been incorporated into nanocarriers and how they affect release are detailed, as well as the advantages and disadvantages of each system.
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Affiliation(s)
- Nadezda Fomina
- University of California San Diego, Skaggs School of Pharmacy & Pharmaceutical Sciences, Dept. of Materials Science and Engineering, Dept. of NanoEngineering, 9500 Gilman Dr. MC 0660, La Jolla, CA, USA
| | - Jagadis Sankaranarayanan
- University of California San Diego, Skaggs School of Pharmacy & Pharmaceutical Sciences, Dept. of Materials Science and Engineering, Dept. of NanoEngineering, 9500 Gilman Dr. MC 0660, La Jolla, CA, USA
| | - Adah Almutairi
- University of California San Diego, Skaggs School of Pharmacy & Pharmaceutical Sciences, Dept. of Materials Science and Engineering, Dept. of NanoEngineering, 9500 Gilman Dr. MC 0660, La Jolla, CA, USA
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109
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Kaczmarek H, Ziegler-Borowska M, Chylińska M, Kowalonek J, Wolnicka M. Effect of azobenzene derivatives on the photochemical stability of poly(methyl methacrylate) films. Polym Degrad Stab 2012. [DOI: 10.1016/j.polymdegradstab.2012.05.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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110
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Dual-responsive poly(styrene-alt-maleic acid)-graft-poly(N-isopropyl acrylamide) micelles as switchable emulsifiers. J Colloid Interface Sci 2012; 380:90-8. [DOI: 10.1016/j.jcis.2012.04.067] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Revised: 04/20/2012] [Accepted: 04/24/2012] [Indexed: 11/20/2022]
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111
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Yoshida E. Effects of Illuminance and Heat Rays on Photo-Controlled/Living Radical Polymerization Mediated by 4-Methoxy-2,2,6,6-Tetramethylpiperidine-1-Oxyl. ACTA ACUST UNITED AC 2012. [DOI: 10.5402/2012/102186] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effects of illuminance and heat rays released from the light source on the photo-controlled/living radical polymerization of methyl methacrylate were investigated with the aim of strict control of molecular weight. The bulk polymerization was performed at room temperature using 4-methoxy-2,2,6,6-tetramethylpiperidine-1-oxyl as the mediator and (2RS,RS)-azobis(4-methoxy-2,4-dimethylvaleronitrile) as the initiator in the presence of (4-tert-butylphenyl)diphenylsulfonium triflate as the accelerator by irradiation with a high-pressure mercury lamp. The polymerization by the direct irradiation from the light source yielded polymers containing an uncontrolled high-molecular-weight polymer and having the molecular weight distribution over 3. On the other hand, the polymerization by the indirect irradiation with reflective light using a mirror produced polymers with controlled molecular weights with comparatively narrow molecular weight distribution at ca. 1.4. Too high an illuminance caused an increase in the molecular weight distribution. During the polymerization, the monomer conversion increased as the illuminance increased. It was found that the elimination of heat rays from the illuminating light was indispensable for the molecular weight control by the photo-controlled/living radical polymerization.
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Affiliation(s)
- Eri Yoshida
- Department of Environmental and Life Sciences, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho Aichi, Toyohashi 441-8580, Japan
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112
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Chenglin Y, Yiqun Y, Ye Z, Na L, Xiaoya L, Jing L, Ming J. Self-assembly and emulsification of poly{[styrene-alt-maleic acid]-co-[styrene-alt-(N-3,4-dihydroxyphenylethyl-maleamic acid)]}. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:9211-9222. [PMID: 22639900 DOI: 10.1021/la301605a] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Self-assembled polymeric micelles can be used as efficient particulate emulsifiers. To explore the relationship between the structure and the oil-water interfacial behavior of the micelle emulsifiers, a new type of amphiphilic random copolymer, poly{(styrene-alt-maleic acid)-co-[styrene-alt-(N-3,4-dihydroxyphenylethyl-maleamic acid)]} (SMA-Dopa), was synthesized, self-assembled into micelles, and used as emulsifiers. SMA-Dopa was synthesized via an aminolysis reaction between dopamine and commercial alternating copolymer poly(styrene-alt-maleic anhydride) (SMA). Dopamine moiety facilitated the self-assembly of the SMA-Dopa in selective-solvent into stable micelles, and increased the adsorption of the SMA-Dopa at the oil-water interface. Additionally, the structural transition of the self-assembled SMA-Dopa52 micelles in response to pH and salinity changes were confirmed by means of TEM, AFM, DLS, aqueous electrophoresis techniques, potentiometric titration, and pyrene fluorescence probe methods. Micelles shrunk with increasing salinity, and flocculation of the shrunken primary micelles occurred at salt concentration exceeding 0.1 M. The micelles swelled with increasing pH, and the disassociation of the SMA-Dopa52 micelles occurred at pH above approximately 6.5. The structure of the micelles plays a crucial role in the oil-water interfacial performance. Micelles with various structures were used as emulsifiers to adsorb at the styrene-water and toluene-water interfaces. The emulsifying characteristics demonstrated that self-assembled SMA-Dopa52 micelles with moderately swollen structure (at 2 < pH < 6) combine the advantages of the solid particulate emulsifiers and polymeric surfactants, possessing excellent emulsifying efficiency and good emulsion stability. Moreover, the emulsifying performance of the SMA-Dopa52 micelles could be enhanced by the addition of salt.
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Affiliation(s)
- Yi Chenglin
- Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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113
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Fleige E, Quadir MA, Haag R. Stimuli-responsive polymeric nanocarriers for the controlled transport of active compounds: concepts and applications. Adv Drug Deliv Rev 2012; 64:866-84. [PMID: 22349241 DOI: 10.1016/j.addr.2012.01.020] [Citation(s) in RCA: 749] [Impact Index Per Article: 62.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 01/25/2012] [Accepted: 01/27/2012] [Indexed: 01/08/2023]
Abstract
The use of polymeric nanocarriers to transport active compounds like small-molecular drugs, peptides, or genes found an increased attention throughout the different fields of natural sciences. Not only that these nanocarriers enhance the properties of already existing drugs in terms of solubility, bioavailability, and prolonged circulation times, furthermore they can be tailor-made in such a manner that they selectively release their cargo at the desired site of action. For the triggered release, these so-called smart drug delivery systems are designed to react on certain stimuli like pH, temperature, redox potential, enzymes, light, and ultrasound. Some of these stimuli are naturally occurring in vivo, for example the difference in pH in different cellular compartments while others are caused by the disease, which is to be treated, like differences in pH and temperature in some tumor tissues. Other external applied stimuli, like light and ultrasound, allow the temporal and spatial control of the release, since they are not triggered by any biological event. This review gives a brief overview about some types of stimuli-responsive nanocarriers with the main focus on organic polymer-based systems. Furthermore, the different stimuli and the design of corresponding responsive nanocarriers will be discussed with the help of selected examples from the literature.
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114
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Xing Y, Wang C, Han P, Wang Z, Zhang X. Acetylcholinesterase responsive polymeric supra-amphiphiles for controlled self-assembly and disassembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:6032-6036. [PMID: 22404254 DOI: 10.1021/la300612k] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We have fabricated enzyme responsive polymeric supra-amphiphiles by mixing a block copolymer of poly(ethylene glycol)-block-poly(acrylic acid) with myristoylcholine chloride in water. The polymeric supra-amphiphiles self-assemble into spherical aggregates with sizes varying from about 40 to 150 nm. Moreover, the spherical aggregates can be disassembled triggered by acetylcholinesterase, an enzyme which can cut off the ester linkage of myristoylcholine chloride. Nile red can be loaded into the spherical aggregates and released in several hours upon the treatment of acetylcholinesterase. The releasing rate is rather fast considering that it takes more than 150 h for Nile red to diffuse out of the spherical aggregates without addition of acetylcholinesterase. It is anticipated that the new enzyme responsive polymeric supra-amphiphile may be explored as a carrier for drug delivery.
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Affiliation(s)
- Yibo Xing
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
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115
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116
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Kurinomaru T, Tomita S, Kudo S, Ganguli S, Nagasaki Y, Shiraki K. Improved complementary polymer pair system: switching for enzyme activity by PEGylated polymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:4334-4338. [PMID: 22320263 DOI: 10.1021/la2043312] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The development of technology for on/off switching of enzyme activity is expected to expand the applications of enzyme in a wide range of research fields. We have previously developed a complementary polymer pair system (CPPS) that enables the activity of several enzymes to be controlled by a pair of oppositely charged polymers. However, it failed to control the activity of large and unstable α-amylase because the aggregation of the complex between anionic α-amylase and cationic poly(allylamine) (PAA) induced irreversible denaturation of the enzyme. To address this issue, we herein designed and synthesized a cationic copolymer with a poly(ethylene glycol) backbone, poly(N,N-diethylaminoethyl methacrylate)-block-poly(ethylene glycol) (PEAMA-b-PEG). In contrast to PAA, α-amylase and β-galactosidase were inactivated by PEAMA-b-PEG with the formation of soluble complexes. The enzyme/PEAMA-b-PEG complexes were then successfully recovered from the complex by the addition of anionic poly(acrylic acid) (PAAc). Thus, dispersion of the complex by PEG segment in PEAMA-b-PEG clearly plays a crucial role for regulating the activities of these enzymes, suggesting that PEGylated charged polymer is a new candidate for CPPS for large and unstable enzymes.
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Affiliation(s)
- Takaaki Kurinomaru
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
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117
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Affiliation(s)
- Yue Zhao
- Département de chimie, Université de Sherbrooke, Sherbrooke, Québec,
Canada J1K 2R1
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118
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Hu J, Wang X, Zheng S. Photo-regulated phase transition of poly(ethylene glycol) derivative containing azobenzene group. POLYM ADVAN TECHNOL 2012. [DOI: 10.1002/pat.3033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jie Hu
- School of Materials Science and Engineering; Jiangsu University; Zhenjiang; 212013; China
| | - Xiang Wang
- School of Materials Science and Engineering; Jiangsu University; Zhenjiang; 212013; China
| | - Shiheng Zheng
- School of Materials Science and Engineering; Jiangsu University; Zhenjiang; 212013; China
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119
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Wang X, Yang Y, Liao Y, Yang Z, Jiang M, Xie X. Robust polyazobenzene microcapsules with photoresponsive pore channels and tunable release profiles. Eur Polym J 2012. [DOI: 10.1016/j.eurpolymj.2011.10.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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120
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121
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Ma L, Jia J, Yang T, Yin G, Liu Y, Sun X, Tao X. Light-controlled self-assembly and conductance: from nanoribbons to nanospheres. RSC Adv 2012. [DOI: 10.1039/c2ra00816e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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122
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Cao W, Li Y, Yi Y, Ji S, Zeng L, Sun Z, Xu H. Coordination-responsive selenium-containing polymer micelles for controlled drug release. Chem Sci 2012. [DOI: 10.1039/c2sc21315j] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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123
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Pojják K, Mészáros R. Preparation of stable electroneutral nanoparticles of sodium dodecyl sulfate and branched poly(ethylenimine) in the presence of pluronic F108 copolymer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:14797-14806. [PMID: 22050126 DOI: 10.1021/la203759r] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Mixing of polyelectrolyte solutions with solutions of oppositely charged surfactants usually leads to phase separation in a certain concentration range. However, since the charge-neutralized polyelectrolyte/surfactant nanoparticles might be utilized as versatile nanocarriers of different substances, it would be desirable to prevent their aggregation for some applications. As it was revealed in earlier investigations, the complete suppression of precipitation may be achieved only in mixtures of ionic surfactants and appropriate copolymer polyelectrolytes with nonionic and ionic blocks. In this work, we present a method that could prevent phase separation in mixtures of homopolyelectrolytes and oppositely charged surfactants. Specifically, it is shown that nonaggregating electroneutral nanocomplexes of branched poly(ethylenimine) (PEI) and sodium dodecyl sulfate (SDS) can be prepared in the presence of the amphiphilic triblock copolymer Pluronic F108, provided that an adequate mixing protocol is used for preparation of the PEI/SDS/F108 mixtures.
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Affiliation(s)
- Katalin Pojják
- Laboratory of Interfaces and Nanosized Systems, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Pázmány Péter sétány 1/A, Hungary
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124
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Fenske T, Korth HG, Mohr A, Schmuck C. Advances in Switchable Supramolecular Nanoassemblies. Chemistry 2011; 18:738-55. [DOI: 10.1002/chem.201102435] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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125
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Han P, Li S, Wang C, Xu H, Wang Z, Zhang X, Thomas J, Smet M. UV-responsive polymeric superamphiphile based on a complex of malachite green derivative and a double hydrophilic block copolymer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:14108-14111. [PMID: 22066690 DOI: 10.1021/la203486q] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We have prepared a UV-responsive polymeric superamphiphile, formed by a malachite green derivative and the double hydrophilic block copolymer methoxy-poly(ethylene glycol)(114)-block-poly(l-lysine hydrochloride)(200) (PEG-b-PLKC) on the basis of electrostatic interactions. The malachite green derivative undergoes photo-ionization upon UV irradiation, which makes it more hydrophilic, resulting in changes in the self-assembly behavior of the polymeric superamphiphile. For this reason, the polymeric superamphiphile originally self-assembles to form sheetlike aggregates, which disassemble after UV irradiation because of the increased solubility of the malachite green derivative. By use of Nile red as a probe, the polarity of the polymeric superamphiphile solution is confirmed to be increased after UV irradiation by fluorescence spectra, which also explains the disassembly of the polymeric superamphiphile.
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Affiliation(s)
- Peng Han
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
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126
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Bléger D, Liebig T, Thiermann R, Maskos M, Rabe JP, Hecht S. Light-Orchestrated Macromolecular “Accordions”: Reversible Photoinduced Shrinking of Rigid-Rod Polymers. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201106879] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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127
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Bléger D, Liebig T, Thiermann R, Maskos M, Rabe JP, Hecht S. Light-Orchestrated Macromolecular “Accordions”: Reversible Photoinduced Shrinking of Rigid-Rod Polymers. Angew Chem Int Ed Engl 2011; 50:12559-63. [DOI: 10.1002/anie.201106879] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Indexed: 11/07/2022]
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128
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Jin Q, Luy C, Ji J, Agarwal S. Design and proof of reversible micelle-to-vesicle multistimuli-responsive morphological regulations. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.25050] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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129
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Wang G, Wang C, Wang Z, Zhang X. Bolaform superamphiphile based on a dynamic covalent bond and its self-assembly in water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:12375-12380. [PMID: 21905672 DOI: 10.1021/la203040e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We have employed a dynamic covalent bond to fabricate a bolaform superamphiphile, which can be used as building blocks for controlled assembly and disassembly. In alkaline environment, one building block bearing a benzoic aldehyde group can react with the other building block bearing an amino group to form a bolaform superamphiphile. It is found that the bolaform superamphiphiles can self-assemble in water to form micellar aggregates. When the pH is tuned down to slightly acidic values, the benzoic imine bond can be hydrolyzed, leading to the dissociation of the superamphiphile. The micellar aggregates will also disassemble, and the loaded guest molecules are released subsequently. This line of research has enriched the family of bolaform amphiphiles, and the resulting assemblies may find application in the field of controlled and targetable drug-delivery in a biological environment.
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Affiliation(s)
- Guangtong Wang
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, PR China
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130
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Huang YF, Chiang WH, Tsai PL, Chern CS, Chiu HC. Novel hybrid vesicles co-assembled from a cationic lipid and PAAc-g-mPEG with pH-triggered transmembrane channels for controlled drug release. Chem Commun (Camb) 2011; 47:10978-80. [PMID: 21909548 DOI: 10.1039/c1cc14793e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work presents an important example of novel hybrid vesicles with pH-triggered transmembrane channels prepared by co-assembly of poly(acrylic acid)-g-poly(monomethoxy ethylene glycol) (PAAc-g-mPEG) with a cationic lipid, didodecyldimethylammonium bromide (DDAB), via electrostatic interaction for effective doxorubicin (DOX) release.
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Affiliation(s)
- Yi-Fong Huang
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan
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131
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General hydrophobic interaction potential for surfactant/lipid bilayers from direct force measurements between light-modulated bilayers. Proc Natl Acad Sci U S A 2011; 108:15699-704. [PMID: 21896718 DOI: 10.1073/pnas.1112411108] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
We establish and quantify correlations among the molecular structures, interaction forces, and physical processes associated with light-responsive self-assembled surfactant monolayers or bilayers at interfaces. Using the surface forces apparatus (SFA), the interaction forces between adsorbed monolayers and bilayers of an azobenzene-functionalized surfactant can be drastically and controllably altered by light-induced conversion of trans and cis molecular conformations. These reversible conformation changes affect significantly the shape of the molecules, especially in the hydrophobic region, which induces dramatic transformations of molecular packing in self-assembled structures, causing corresponding modulation of electrostatic double layer, steric hydration, and hydrophobic interactions. For bilayers, the isomerization from trans to cis exposes more hydrophobic groups, making the cis bilayers more hydrophobic, which lowers the activation energy barrier for (hemi)fusion. A quantitative and general model is derived for the interaction potential of charged bilayers that includes the electrostatic double-layer force of the Derjaguin-Landau-Verwey-Overbeek theory, attractive hydrophobic interactions, and repulsive steric-hydration forces. The model quantitatively accounts for the elastic strains, deformations, long-range forces, energy maxima, adhesion minima, as well as the instability (when it exists) as two bilayers breakthrough and (hemi)fuse. These results have several important implications, including quantitative and qualitative understanding of the hydrophobic interaction, which is furthermore shown to be a nonadditive interaction.
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132
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Sakai T, Kurosawa H, Okada T, Mishima S. Vesicle formation in mixture of a PEO-PPO-PEO block copolymer (Pluronic P123) and a nonionic surfactant (Span 65) in water. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2011.08.046] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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133
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An L, Wang Y, Liu X, Ma N, Du H, Jin M, Liu Y, Zhang L, Xu Y, Huang P, Sun Z. Block ionomer complex micelles based on the self-assembly of poly(ethylene glycol)-block-poly(acrylic acid) and CdCl₂ for anti-tumor drug delivery. Chem Pharm Bull (Tokyo) 2011; 59:559-63. [PMID: 21532192 DOI: 10.1248/cpb.59.559] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A novel block ionomer complex micelles as drug carrier is developed utilizing self-assemble of poly(ethylene glycol)-block-poly(acrylic acid) (PEG-b-PAA) and cadmium chloride. This micelles are characterized to be have good bio-compatibility, hydrophilicity, passive targeting and sustained slow release property which shows great potential for liver cancer therapy. Block ionomer complex micelles based on PEG-b-PAA and cadmium chloride can self-assemble in distilled water, and Cd(²+) agent is entrapped into the core stabilized by PEG shells. Results showed the block ionomer complex micelles to be spherically shaped. Cadmium was incorporated easily into the ionic core with remarkably high efficiency (34.25% weight (wt)/wt). The cadmium-loaded polymeric micelles exhibited sustained and slow release behavior of cadmium and a potent cytotoxicity against SMMC-7721 in vitro. This novel block ionomer complex micelles with cores of metal antitumor drug indicates to be potential carriers for effective drug delivery.
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Affiliation(s)
- Liping An
- School of Public Health, Jilin University
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134
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Nalluri SKM, Bultema JB, Boekema EJ, Ravoo BJ. Photoresponsive Molecular Recognition and Adhesion of Vesicles in a Competitive Ternary Supramolecular System. Chemistry 2011; 17:10297-303. [DOI: 10.1002/chem.201100789] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Revised: 06/10/2011] [Indexed: 11/06/2022]
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135
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Cui W, Lu X, Cui K, Wu J, Wei Y, Lu Q. Fluorescent nanoparticles of chitosan complex for real-time monitoring drug release. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:8384-8390. [PMID: 21661743 DOI: 10.1021/la200552k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
New types of fluorescent nanoparticles (FNPs) were prepared through ionic self-assembly of anthracene derivative and chitosan for applications as drug delivery carriers with real-time monitoring of the process of drug release. Because of the presence of the hydrophilic groups, these FNPs showed excellent dispersion and stability in aqueous solution. The structure and properties of the FNPs were investigated by using means of (1)H NMR, FTIR, SEM, dynamic light scattering (DLS), and so on. The potential practical applications as drug delivery carriers for real-time detection of the drug release process were demonstrated using Nicardipine as a model drug. Upon loading the drug, the strong blue fluorescence of FNPs was quenched due to electron transfer and fluorescence resonance energy transfer (FRET). With release of drug in vitro, the fluorescence was recovered again. The relationship between the accumulative drug release of FNPs and the recovered fluorescence intensity has been established. Such FNPs may open up new perspectives for designing a new class of detection system for monitoring drug release.
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Affiliation(s)
- Wei Cui
- School of Chemistry and Chemical Engineering, the State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
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136
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Yan B, He J, Ayotte P, Zhao Y. Optically Triggered Dissociation of Kinetically Stabilized Block Copolymer Vesicles in Aqueous Solution. Macromol Rapid Commun 2011; 32:972-6. [DOI: 10.1002/marc.201100118] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 04/02/2011] [Indexed: 11/10/2022]
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137
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Wang C, Wang Z, Zhang X. Superamphiphiles as building blocks for supramolecular engineering: towards functional materials and surfaces. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:1379-1383. [PMID: 21506269 DOI: 10.1002/smll.201002365] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Indexed: 05/30/2023]
Abstract
Superamphiphiles refer to amphiphiles that are constructed on the basis of noncovalent interactions or dynamic covalent bonds. Superamphiphiles are a new kind of building block for well-defined nanostructured soft materials. This article summarizes different ways to fabricate superamphiphiles, including low-molecular-weight and polymeric superamphiphiles. In addition, the noncovalent nature of superamphiphiles facilitates the incorporation of functional groups, thus opening a new avenue for supramolecular engineering of functional soft materials.
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Affiliation(s)
- Chao Wang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, P.R. China
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138
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Ma N, Xu H, An L, Li J, Sun Z, Zhang X. Radiation-sensitive diselenide block co-polymer micellar aggregates: toward the combination of radiotherapy and chemotherapy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:5874-8. [PMID: 21488607 DOI: 10.1021/la2009682] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
We have developed a potential radiation-sensitive drug-delivery system using active diselenide-containing block co-polymer aggregates in aqueous solution that can load and release anticancer drugs. These aggregates were sensitive to even a low dose of γ-radiation, such as 5 Gy, which is close to the radiation dose received by patients during a single radiotherapy treatment. This line of research may open an avenue for the combination of radiotherapy and chemotherapy.
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Affiliation(s)
- Ning Ma
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
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139
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Štěpánek M, Matějíček P, Procházka K, Filippov SK, Angelov B, Šlouf M, Mountrichas G, Pispas S. Polyelectrolyte-surfactant complexes formed by poly[3,5-bis(trimethylammoniummethyl)4-hydroxystyrene iodide]-block-poly(ethylene oxide) and sodium dodecyl sulfate in aqueous solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:5275-5281. [PMID: 21446735 DOI: 10.1021/la200442s] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Formation of polyelectrolyte-surfactant (PE-S) complexes of poly[3,5-bis(trimethylammoniummethyl)-4-hydroxystyrene iodide]-block-poly(ethylene oxide) (QNPHOS-PEO) and sodium dodecyl sulfate (SDS) in aqueous solution was studied by dynamic and electrophoretic light scattering, small-angle X-ray scattering (SAXS), atomic force microscopy, and fluorometry, using pyrene as a fluorescent probe. SAXS data from the QNPHOS-PEO/SDS solutions were fitted assuming contributions from free copolymer, PE-S aggregates described by a mass fractal model, and densely packed surfactant micelles inside the aggregates. It was found that, unlike other systems of a double hydrophilic block polyelectrolyte and an oppositely charged surfactant, PE-S aggregates of the QNPHOS-PEO/SDS system do not form core-shell particles and the PE-S complex precipitates before reaching the charge equivalence between dodecyl sulfate anions and QNPHOS polycationic blocks, most likely because of conformational rigidity of the QNPHOS blocks, which prevents the system from the corresponding rearrangement.
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Affiliation(s)
- Miroslav Štěpánek
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic.
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140
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Liu K, Wang C, Li Z, Zhang X. Superamphiphiles Based on Directional Charge-Transfer Interactions: From Supramolecular Engineering to Well-Defined Nanostructures. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007167] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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141
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Liu K, Wang C, Li Z, Zhang X. Superamphiphiles based on directional charge-transfer interactions: from supramolecular engineering to well-defined nanostructures. Angew Chem Int Ed Engl 2011; 50:4952-6. [PMID: 21472920 DOI: 10.1002/anie.201007167] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 02/08/2011] [Indexed: 11/07/2022]
Affiliation(s)
- Kai Liu
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
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142
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Yesilyurt V, Ramireddy R, Thayumanavan S. Photoregulated release of noncovalent guests from dendritic amphiphilic nanocontainers. Angew Chem Int Ed Engl 2011; 50:3038-42. [PMID: 21404394 DOI: 10.1002/anie.201006193] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2010] [Revised: 12/30/2010] [Indexed: 01/08/2023]
Affiliation(s)
- Volkan Yesilyurt
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003, USA
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143
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Yesilyurt V, Ramireddy R, Thayumanavan S. Photoregulated Release of Noncovalent Guests from Dendritic Amphiphilic Nanocontainers. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006193] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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144
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Wang C, Chen Q, Wang Z, Zhang X. An enzyme-responsive polymeric superamphiphile. Angew Chem Int Ed Engl 2011; 49:8612-5. [PMID: 20886493 DOI: 10.1002/anie.201004253] [Citation(s) in RCA: 184] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chao Wang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China
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145
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Han D, Tong X, Zhao Y. Fast Photodegradable Block Copolymer Micelles for Burst Release. Macromolecules 2011. [DOI: 10.1021/ma102778d] [Citation(s) in RCA: 162] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Dehui Han
- Département de chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1
| | - Xia Tong
- Département de chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1
| | - Yue Zhao
- Département de chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1
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146
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Wang Y, Merkel TJ, Chen K, Fromen CA, Betts DE, DeSimone JM. Generation of a library of particles having controlled sizes and shapes via the mechanical elongation of master templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:524-528. [PMID: 21166444 DOI: 10.1021/la1045095] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Herein we describe a versatile and readily scalable approach for the fabrication of particles with a variety of shapes and sizes from a single master template by augmenting the particle replication in nonwetting templates (PRINT) method with mechanical elongation. Repetition of the elongation steps in one direction leads to the fabrication of linear particles with high aspect ratio (AR), over 40 times greater than in the original master, while a range of particle shapes can be obtained by repeating the elongation procedure while changing the stretching direction, generating diamond, rectangular, curved parallelogram particles from a single cubic master.
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Affiliation(s)
- Yapei Wang
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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147
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148
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Zhou X, Duan Y, Yan S, Liu Z, Zhang C, Yao L, Cui G. Optical modulation of supramolecular assembly of amphiphilic photochromic diarylethene: from nanofiber to nanosphere. Chem Commun (Camb) 2011; 47:6876-8. [DOI: 10.1039/c1cc11385b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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149
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Fang RH, Aryal S, Hu CMJ, Zhang L. Quick synthesis of lipid-polymer hybrid nanoparticles with low polydispersity using a single-step sonication method. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:16958-62. [PMID: 20961057 DOI: 10.1021/la103576a] [Citation(s) in RCA: 119] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Lipid-polymer hybrid nanoparticle, consisting of a hydrophobic polymeric core and a lipid monolayer shell, represents a new and promising drug delivery platform that has shown controllable particle size and surface functionality, high drug loading yield, sustained drug release profile, and excellent in vitro and in vivo stability. These lipid monolayer-coated polymeric nanoparticles are typically fabricated through a modified nanoprecipitation method, which involves sample heating, vortexing, and solvent evaporation. Herein we report a new and fast method to synthesize lipid-polymer hybrid nanoparticles with controllable and nearly uniform particle size. Using a bath sonication approach, we demonstrate that the whole hybrid nanoparticle synthesis process can be completed in about 5 min compared with a few hours for previous synthesis approaches. The size and polydispersity of the resulting nanoparticles can be readily controlled by tuning the relative concentrations of individual building components. Colloidal stability tests of the synthesized hybrid nanoparticles in PBS buffer and serum show no signs of aggregation over a period of 5 days. The present method improves the production rate of the hybrid nanoparticles by near 20-fold while not compromising the physicochemical properties of the particles. This work may facilitate the bench-to-bedside translation of lipid-polymer hybrid nanoparticles as a robust drug nanocarrier by allowing for fabricating a large amount of these nanoparticles at high production rate.
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Affiliation(s)
- Ronnie H Fang
- Department of Nanoengineering and Moores Cancer Center, University of California-San Diego, La Jolla, California 92093, United States
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150
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Xu JP, Yang X, Lv LP, Wei Y, Xu FM, Ji J. Gold-nanoparticle-stabilized pluronic micelles exhibiting glutathione triggered morphology evolution properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:16841-16847. [PMID: 20942438 DOI: 10.1021/la102929k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Nanocomposites constructed from metallic nanoparticles and amphiphilic copolymers have attracted substantial interest for various potential applications. Here we report on the nanocomposites prepared through cross-linking pluronic micelles with gold nanoparticles. The covalent binding of gold nanoparticles onto the micelles and the thermoresponsibility of the system was followed via ultraviolet-visible spectroscopy, dynamic light scattering, transmission electron microscopy, and fluorescence spectroscopy. The gold-nanoparticle-stabilized pluronic micelles can take thiol-exchange reaction with glutathione and their morphology spontaneously evolved and reassembled into large "vesicular"-like nanocapsules. Obvious temperature responsibility was followed in the gold-nanoparticle-stabilized pluronic micelles system and also the glutathione triggered nanocapsules systems. It is believed that the high stability and glutathione responsibility of the Au-NPs shell-cross-linked micelles allowed for high potential in drug delivery and biosensors.
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Affiliation(s)
- Jian-Ping Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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