51
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Wu YC, Prasad Bastakoti B, Pramanik M, Yamauchi Y, Kuo SW. Multiple hydrogen bonding mediates the formation of multicompartment micelles and hierarchical self-assembled structures from pseudo A-block-(B-graft-C) terpolymers. Polym Chem 2015. [DOI: 10.1039/c5py00663e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Different multi-compartment micelle structures: raspberry-like spheres, core–shell–corona cylinders, nanostructured vesicles, onion-like structures, and woodlouse-like structures was found dependent upon selective solvent concentration.
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Affiliation(s)
- Yi-Chen Wu
- Department of Materials and Optoelectronic Science
- Center for Nanoscience and Nanotechnology
- National Sun Yat-Sen University
- Kaohsiung
- Taiwan
| | - Bishnu Prasad Bastakoti
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Malay Pramanik
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Yusuke Yamauchi
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science
- Center for Nanoscience and Nanotechnology
- National Sun Yat-Sen University
- Kaohsiung
- Taiwan
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52
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Morphological studies on Sn-O coordination driving self-assembly of well-defined organotin-containing block copolymers. CHINESE JOURNAL OF POLYMER SCIENCE 2014. [DOI: 10.1007/s10118-014-1546-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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53
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Liu Z, Qiao J, Tian Y, Wu M, Niu Z, Huang Y. Polymeric supra-amphiphiles based on terminal group electrostatic interactions: fabrication of micelles with modifiable surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:8938-8944. [PMID: 25014581 DOI: 10.1021/la501936a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
On the basis of terminal group electrostatic interactions (TGEI), a supra-amphiphile is formed between a homopolymer of polylactic acid with carboxyl group at one end (PLA-COOH) and hepta-6-hydrazyl-β-cyclodextrin (HH-CD). The amphiphile can self-assemble into a micellar structure in aqueous solution. The outer surface of the micelle, which is composed of cyclodextrins, can be further modified via host-guest interactions. Considering the biocompatibility of the building blocks, the application of the micelles in a nanocarrier of anticancer drugs is further explored.
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Affiliation(s)
- Zhi Liu
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P.R. China
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54
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Yan Q, Zhang H, Zhao Y. CO 2-Switchable Supramolecular Block Glycopolypeptide Assemblies. ACS Macro Lett 2014; 3:472-476. [PMID: 35590785 DOI: 10.1021/mz500181q] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A novel supramolecular block glycopolypeptide, designed to have the viral building blocks and be sensitive to CO2, a physiological stimulus, was prepared via the orthogonal coupling of two end-functionalized biopolymers, dextran with β-cyclodextrin terminal (Dex-CD) and poly(l-valine) with a benzimidazole tail (BzI-PVal), respectively, driven by the end-to-end host-guest interactions. Due to the CO2-cleavable CD/BzI connection, both the vesicular and fibrous aggregates of this supramolecular block copolymer self-assembled in aqueous solution can undergo a reversible process of disassembly upon "breathing in" CO2 and assembly upon "breathing out" CO2, which mimics, to some extent, the disintegration and construction of viral capsid nanostructures.
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Affiliation(s)
- Qiang Yan
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - Hongji Zhang
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - Yue Zhao
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
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55
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Chen L, Peng Z, Zeng Z, She Y, Wei J, Chen Y. Hairy polymeric nanocapsules with ph-responsive shell and thermoresponsive brushes: Tunable permeability for controlled release of water-soluble drugs. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27233] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Lei Chen
- Institute of Polymers, Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Zhiping Peng
- Institute of Polymers, Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Zhipeng Zeng
- Institute of Polymers, Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Yingqi She
- Institute of Polymers, Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Junchao Wei
- Institute of Polymers, Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Yiwang Chen
- Institute of Polymers, Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
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56
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Xu X, Li Y, Li H, Liu R, Sheng M, He B, Gu Z. Smart nanovehicles based on pH-triggered disassembly of supramolecular peptide-amphiphiles for efficient intracellular drug delivery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:1133-1140. [PMID: 24155260 DOI: 10.1002/smll.201301885] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 08/02/2013] [Indexed: 06/02/2023]
Abstract
A novel type of nanovehicle (NV) based on stimuli-responsive supramolecular peptide-amphiphiles (SPAs, dendritic poly (L-lysine) non-covalently linked poly (L-leucine)) is developed for intracellular drug delivery. To determine the pH-dependent mechanism, the supramolecular peptide-amphiphile system (SPAS) is investigated at different pH conditions using a variety of physical and chemical approaches. The pH-triggered disassembly of SPAS can be attributed to the disappearance of non-covalent interactions within SPAs around the isoelectric point of poly (L-leucine). SPAS is found to encapsulate guest molecules at pH 7.4 but release them at pH 6.2. In this way, SPAS is able to act as a smart NV to deliver its target to tumor cells using intracellular pH as a trigger. The DOX-loaded NVs are approximately 150 nm in size. In vitro release profiles and confocal laser scanning microscopy (CLSM) images of HepG2 cells confirm that lower pH conditions can trigger the disassembly of NVs and so achieve pH-dependent intracellular DOX delivery. In vitro cytotoxicity of the DOX-loaded NVs to HepG2 cells demonstrate that the smart NVs enhance the efficacy of hydrophobic DOX. Fluorescence-activated cell sorting (FACS) and CLSM results show that the NVs can enhance the endocytosis of DOX into HepG2 cells considerably and deliver DOX to the nuclei.
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Affiliation(s)
- Xianghui Xu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610064, PR China
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57
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Tian Z, Chen C, Allcock HR. Synthesis and Assembly of Novel Poly(organophosphazene) Structures Based on Noncovalent “Host–Guest” Inclusion Complexation. Macromolecules 2014. [DOI: 10.1021/ma500020p] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zhicheng Tian
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Chen Chen
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Harry R. Allcock
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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58
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59
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He Q, Huang J, Liang H, Lu J. Light-responsive fluorescent cross-linked polymeric micelles based on a salicylidene Schiff base pendant-functionalized block copolymer. Polym Chem 2014. [DOI: 10.1039/c4py00053f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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60
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Wang D, Tong G, Dong R, Zhou Y, Shen J, Zhu X. Self-assembly of supramolecularly engineered polymers and their biomedical applications. Chem Commun (Camb) 2014; 50:11994-2017. [DOI: 10.1039/c4cc03155e] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Self-assembly behavior of supramolecularly engineered polymers and their biomedical applications have been summarized.
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Affiliation(s)
- Dali Wang
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai, P. R. China
| | - Gangsheng Tong
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai, P. R. China
- Instrumental Analysis Center
| | - Ruijiao Dong
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai, P. R. China
| | - Yongfeng Zhou
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai, P. R. China
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
| | - Jian Shen
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
- Jiangsu Key Laboratory of Biomedical Materials
- College of Chemistry and Materials Science
- Nanjing Normal University
- 210046 Nanjing, P. R. China
| | - Xinyuan Zhu
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai, P. R. China
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
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61
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Guillerm B, Lemaur V, Ernould B, Cornil J, Lazzaroni R, Gohy JF, Dubois P, Coulembier O. A one-pot two-step efficient metal-free process for the generation of PEO-b-PCL-b-PLA amphiphilic triblock copolymers. RSC Adv 2014. [DOI: 10.1039/c3ra47204c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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62
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Bertrand O, Poggi E, Gohy JF, Fustin CA. Functionalized Stimuli-Responsive Nanocages from Photocleavable Block Copolymers. Macromolecules 2013. [DOI: 10.1021/ma402301w] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Olivier Bertrand
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio- and Soft matter (BSMA) division, Universite catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve, Belgium
| | - Elio Poggi
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio- and Soft matter (BSMA) division, Universite catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve, Belgium
| | - Jean-François Gohy
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio- and Soft matter (BSMA) division, Universite catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio- and Soft matter (BSMA) division, Universite catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve, Belgium
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63
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Elsabahy M, Li A, Zhang F, Sultan D, Liu Y, Wooley KL. Differential immunotoxicities of poly(ethylene glycol)- vs. poly(carboxybetaine)-coated nanoparticles. J Control Release 2013; 172:641-52. [PMID: 24056145 PMCID: PMC3858532 DOI: 10.1016/j.jconrel.2013.09.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2013] [Revised: 09/03/2013] [Accepted: 09/09/2013] [Indexed: 11/16/2022]
Abstract
Although the careful selection of shell-forming polymers for the construction of nanoparticles is an obvious parameter to consider for shielding of core materials and their payloads, providing for prolonged circulation in vivo by limiting uptake by the immune organs, and thus, allowing accumulation at the target sites, the immunotoxicities that such shielding layers elicit is often overlooked. For instance, we have previously performed rigorous in vitro and in vivo comparisons between two sets of nanoparticles coated with either non-ionic poly(ethylene glycol) (PEG) or zwitterionic poly(carboxybetaine) (PCB), but only now report the immunotoxicity and anti-biofouling properties of both polymers, as homopolymers or nanoparticle-decorating shell, in comparison to the uncoated nanoparticles, and Cremophor-EL, a well-known low molecular weight surfactant used for formulation of several drugs. It was found that both PEG and PCB polymers could induce the expression of cytokines in vitro and in vivo, with PCB being more immunotoxic than PEG, which corroborates the in vivo pharmacokinetics and biodistribution profiles of the two sets of nanoparticles. This is the first study to report on the ability of PEG, the most commonly utilized polymer to coat nanomaterials, and PCB, an emerging zwitterionic anti-biofouling polymer, to induce the secretion of cytokines and be of potential immunotoxicity. Furthermore, we report here on the possible use of immunotoxicity assays to partially predict in vivo pharmacokinetics and biodistribution of nanomaterials.
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Affiliation(s)
- Mahmoud Elsabahy
- Department of Chemistry, Department of Chemical Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, USA
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut Clinical Center of Nanomedicine, Al-Rajhy Liver Hospital, Assiut University, Assiut, Egypt
| | - Ang Li
- Department of Chemistry, Department of Chemical Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, USA
| | - Fuwu Zhang
- Department of Chemistry, Department of Chemical Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, USA
| | - Deborah Sultan
- Department of Radiology, Washington University in Saint Louis, MO 63110, USA
| | - Yongjian Liu
- Department of Radiology, Washington University in Saint Louis, MO 63110, USA
| | - Karen L. Wooley
- Department of Chemistry, Department of Chemical Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, USA
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64
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Sambe L, Stoffelbach F, Poltorak K, Lyskawa J, Malfait A, Bria M, Cooke G, Woisel P. Elaboration of Thermoresponsive Supramolecular Diblock Copolymers in Water from Complementary CBPQT4+and TTF End-Functionalized Polymers. Macromol Rapid Commun 2013; 35:498-504. [DOI: 10.1002/marc.201300729] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 10/30/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Léna Sambe
- UMET (UMR8207); Université de Lille Nord de France, ENSCL; 59655 Villeneuve d'Ascq Cedex France
| | - François Stoffelbach
- UMR 7610, Laboratoire de Chimie des Polymères, UPMC Université; Paris 6 CNRS, 3, rue Galilée 94200 Ivry sur Seine France
| | - Katarzyna Poltorak
- UMR 7610, Laboratoire de Chimie des Polymères, UPMC Université; Paris 6 CNRS, 3, rue Galilée 94200 Ivry sur Seine France
| | - Joël Lyskawa
- UMET (UMR8207); Université de Lille Nord de France, ENSCL; 59655 Villeneuve d'Ascq Cedex France
| | - Aurélie Malfait
- UMET (UMR8207); Université de Lille Nord de France, ENSCL; 59655 Villeneuve d'Ascq Cedex France
| | - Marc Bria
- UMET (UMR8207); Université de Lille Nord de France, ENSCL; 59655 Villeneuve d'Ascq Cedex France
| | - Graeme Cooke
- Glasgow Centre for Physical Organic Chemistry, WestCHEM, School of Chemistry; University of Glasgow; Glasgow G12 8QQ UK
| | - Patrice Woisel
- UMET (UMR8207); Université de Lille Nord de France, ENSCL; 59655 Villeneuve d'Ascq Cedex France
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65
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Elsabahy M, Samarajeewa S, Raymond JE, Clark C, Wooley KL. Shell-crosslinked knedel-like nanoparticles induce lower immunotoxicity than their non-crosslinked analogs. J Mater Chem B 2013; 1:10.1039/C3TB20668H. [PMID: 24187610 PMCID: PMC3811931 DOI: 10.1039/c3tb20668h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
The development of stable nanoparticles that can withstand the changing conditions experienced in a biological setting and also be of low toxicity and immunogenicity is of particular importance to address the problems associated with currently utilized nanotechnology-based therapeutics and diagnostics. The use of crosslinked nanoparticles continues to receive special impetus, due to their robust structure and high kinetic stability, and they have recently been shown to induce lower cytotoxicity than their non-crosslinked micellar counterparts. In the current study, poly(acrylamidoethylamine)-block-poly(DL-lactide) (PAEA90-b-PDLLA40) copolymers were synthesized, self-assembled in water to yield nanoscopic polymeric micelles, and the effects of decorating the micellar surface with poly(ethylene glycol) (i.e. PEGylation) and crosslinking the PAEA layer to varying extents on the physicochemical characteristics, cytotoxicity and immunotoxicity of the nanoparticles were studied. Herein, we report for the first time that crosslinking can efficiently reduce the immunotoxicity of polymeric nanomaterials. In addition, increasing the degree of crosslinking further reduced the accessibility of biomolecules to the core of the nanoparticles and decreased their cytotoxicity and immunotoxicity. It is also highlighted that crosslinking can be more efficient than PEGylation in reducing the immunotoxicity of nanomaterials. Shell-crosslinking of block copolymer micelles, therefore, is expected to advance their clinical development beyond the earlier known effects, and to broaden the implications in the field of nanomedicine.
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Affiliation(s)
- Mahmoud Elsabahy
- Department of Chemistry, Department of Chemical Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, United States
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut Clinical Center of Nanomedicine, Al-Rajhy Liver Hospital, Assiut University, Assiut, Egypt
| | - Sandani Samarajeewa
- Department of Chemistry, Department of Chemical Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, United States
| | - Jeffery E. Raymond
- Department of Chemistry, Department of Chemical Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, United States
| | - Corrie Clark
- Department of Chemistry, Department of Chemical Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, United States
| | - Karen L. Wooley
- Department of Chemistry, Department of Chemical Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, United States
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66
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Zhao Y, Sakai F, Su L, Liu Y, Wei K, Chen G, Jiang M. Progressive macromolecular self-assembly: from biomimetic chemistry to bio-inspired materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:5215-5256. [PMID: 24022921 DOI: 10.1002/adma.201302215] [Citation(s) in RCA: 144] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/08/2013] [Indexed: 06/02/2023]
Abstract
Macromolecular self-assembly (MSA) has been an active and fruitful research field since the 1980s, especially in this new century, which is promoted by the remarkable developments in controlled radical polymerization in polymer chemistry, etc. and driven by the demands in bio-related investigations and applications. In this review, we try to summarize the trends and recent progress in MSA in relation to biomimetic chemistry and bio-inspired materials. Our paper covers representative achievements in the fabrication of artificial building blocks for life, cell-inspired biomimetic materials, and macromolecular assemblies mimicking the functions of natural materials and their applications. It is true that the current status of the deliberately designed and obtained nano-objects based on MSA including a variety of micelles, multicompartment vesicles, and some hybrid and complex nano-objects is at their very first stage to mimic nature, but significant and encouraging progress has been made in achieving a certain similarity in morphologies or properties to that of natural ones. Such achievements also demonstrate that MSA has played an important and irreplaceable role in the grand and long-standing research of biomimetic and bio-inspired materials, the future success of which depends on mutual and persistent efforts in polymer science, material science, supramolecular chemistry, and biology.
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Affiliation(s)
- Yu Zhao
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai, China
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67
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Patterson JP, Kelley EG, Murphy RP, Moughton AO, Robin M, Lu A, Colombani O, Chassenieux C, Cheung D, Sullivan MO, Epps TH, O’Reilly RK. Structural characterization of amphiphilic homopolymer micelles using light scattering, SANS, and cryo-TEM. Macromolecules 2013; 46:6319-6325. [PMID: 24058209 PMCID: PMC3777398 DOI: 10.1021/ma4007544] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the aqueous solution self-assembly of a series of poly(N-isopropylacrylamide) (PNIPAM) polymers end-functionalized with a hydrophobic sulfur-carbon-sulfur (SCS) pincer ligand. Although the hydrophobic ligand accounted for <5 wt% of the overall homopolymer mass, the polymers self-assembled into well-defined spherical micelles in aqueous solution, and these micelles are potential precursors to solution-assembled nanoreactors for small molecule catalysis applications. The micelle structural details were investigated using light scattering, cryogenic transmission electron microscopy (cryo-TEM), and small angle neutron scattering (SANS). Radial density profiles extracted from the cryo-TEM micrographs suggested that the PNIPAM chains formed a diffuse corona with a radially decreasing corona density profile and provided valuable a priori information about the micelle structure for SANS data modeling. SANS analysis indicated a similar profile in which the corona surrounded a small hydrophobic core containing the pincer ligand. The similarity between the SANS and cryo-TEM results demonstrated that detailed information about the micelle density profile can be obtained directly from cryo-TEM and highlighted the complementary use of scattering and cryo-TEM in the structural characterization of solution-assemblies, such as the SCS pincer-functionalized homopolymers described here.
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Affiliation(s)
- Joseph P. Patterson
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Elizabeth G. Kelley
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Ryan P. Murphy
- University of Delaware, Department of Chemical and Biomolecular Engineering, 150 Academy Street, Newark, DE 19716, United States
| | - Adam O. Moughton
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Mathew Robin
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Annhelen Lu
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Olivier Colombani
- LUNAM Université, Université du Maine, IMMM UMR CNRS 6283, Département PCI, Avenue Olivier Messiaen, 72085 Le Mans Cedex 09, France
| | - Christophe Chassenieux
- LUNAM Université, Université du Maine, IMMM UMR CNRS 6283, Département PCI, Avenue Olivier Messiaen, 72085 Le Mans Cedex 09, France
| | - David Cheung
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Millicent O. Sullivan
- University of Delaware, Department of Chemical and Biomolecular Engineering, 150 Academy Street, Newark, DE 19716, United States
| | - Thomas H. Epps
- University of Delaware, Department of Chemical and Biomolecular Engineering, 150 Academy Street, Newark, DE 19716, United States
| | - Rachel K. O’Reilly
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
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68
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Mugemana C, Joset A, Guillet P, Appavou MS, De Souza N, Fustin CA, Leyh B, Gohy JF. Structure of Metallo-Supramolecular Micellar Gels. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300288] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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69
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Sakai F, Ji ZW, Liu JH, Chen GS, Jiang M. A novel supramolecular graft copolymer via cucurbit[8]uril-based complexation and its self-assembly. CHINESE CHEM LETT 2013. [DOI: 10.1016/j.cclet.2013.04.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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70
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Petzetakis N, Robin MP, Patterson JP, Kelley EG, Cotanda P, Bomans PHH, Sommerdijk NAJM, Dove AP, Epps TH, O'Reilly RK. Hollow block copolymer nanoparticles through a spontaneous one-step structural reorganization. ACS NANO 2013; 7:1120-8. [PMID: 23391297 PMCID: PMC3589578 DOI: 10.1021/nn400272p] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The spontaneous one-step synthesis of hollow nanocages and nanotubes from spherical and cylindrical micelles based on poly(acrylic acid)-b-polylactide (P(AA)-b-P(LA)) block copolymers (BCPs) has been achieved. This structural reorganization, which occurs simply upon drying of the samples, was elucidated by transmission electron microscopy (TEM) and atomic force microscopy (AFM). We show that it was necessary to use stain-free imaging to examine these nanoscale assemblies, as the hollow nature of the particles was obscured by application of a heavy metal stain. Additionally, the internal topology of the P(AA)-b-P(LA) particles could be tuned by manipulating the drying conditions to give solid or compartmentalized structures. Upon resuspension, these reorganized nanoparticles retain their hollow structure and display significantly enhanced loading of a hydrophobic dye compared to the original solid cylinders.
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Affiliation(s)
- Nikos Petzetakis
- Department of Chemistry, Library Road, University of Warwick, Coventry, CV4 7AL, UK
| | - Mathew P. Robin
- Department of Chemistry, Library Road, University of Warwick, Coventry, CV4 7AL, UK
| | - Joseph P. Patterson
- Department of Chemistry, Library Road, University of Warwick, Coventry, CV4 7AL, UK
| | - Elizabeth G. Kelley
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Pepa Cotanda
- Department of Chemistry, Library Road, University of Warwick, Coventry, CV4 7AL, UK
| | - Paul H. H. Bomans
- Department of Chemical Engineering and Chemistry, Technical University Eindhoven, P.O. Box 513, The Netherlands
| | - Nico A. J. M. Sommerdijk
- Department of Chemical Engineering and Chemistry, Technical University Eindhoven, P.O. Box 513, The Netherlands
| | - Andrew P. Dove
- Department of Chemistry, Library Road, University of Warwick, Coventry, CV4 7AL, UK
| | - Thomas H. Epps
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
- Corresponding Author; R.K.O'
| | - Rachel K. O'Reilly
- Department of Chemistry, Library Road, University of Warwick, Coventry, CV4 7AL, UK
- Corresponding Author; R.K.O'
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Patterson JP, Cotanda P, Kelley EG, Moughton AO, Lu A, Epps TH, O’Reilly RK. Catalytic Y-tailed amphiphilic homopolymers - aqueous nanoreactors for high activity, low loading SCS pincer catalysts. Polym Chem 2013; 4:2033-2039. [PMID: 23539324 PMCID: PMC3607382 DOI: 10.1039/c3py21137a] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A new amphiphilic homopolymer bearing an SCS pincer palladium complex has been synthesized by reversible addition fragmentation chain transfer polymerization. The amphiphile has been shown to form spherical and worm-like micelles in water by cryogenic transmission electron microscopy and small angle neutron scattering. Segregation of reactive components within the palladium containing core results in increased catalytic activity of the pincer compound compared to small molecule analogues. This allows carbon-carbon bond forming reactions to be performed in water with reduced catalyst loadings and enhanced activity.
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Affiliation(s)
- Joseph P. Patterson
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Pepa Cotanda
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Elizabeth G. Kelley
- University of Delaware, Department of Chemical Engineering, 150 Academy Street, Newark, DE 19716, USA
| | - Adam O. Moughton
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Annhelen Lu
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Thomas H. Epps
- University of Delaware, Department of Chemical Engineering, 150 Academy Street, Newark, DE 19716, USA
| | - Rachel K. O’Reilly
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
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73
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McNamee KP, Pitet LM, Knauss DM. Synthesis, assembly, and cross-linking of polymer amphiphiles in situ: polyurethane–polylactide core–shell particles. Polym Chem 2013. [DOI: 10.1039/c3py00030c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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74
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Wu YC, Wu YS, Kuo SW. Bioinspired Photo-Core-Crosslinked and Noncovalently Connected Micelles From Functionalized Polystyrene and Poly(ethylene oxide) Homopolymers. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200648] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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76
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Guillerm B, Monge S, Lapinte V, Robin JJ. Well-defined poly(oxazoline)-b-poly(acrylate) amphiphilic copolymers: From synthesis by polymer-polymer coupling to self-organization in water. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26474] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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77
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Wang J, Cohen Stuart MA, Marcelis ATM, Colomb-Delsuc M, Otto S, van der Gucht J. Stable Polymer Micelles Formed by Metal Coordination. Macromolecules 2012. [DOI: 10.1021/ma301323z] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Junyou Wang
- Laboratory of Physical Chemistry and Colloid
Science, Wageningen University, Dreijenplein
6, 6703 HB Wageningen, The Netherlands
| | - Martien A. Cohen Stuart
- Laboratory of Physical Chemistry and Colloid
Science, Wageningen University, Dreijenplein
6, 6703 HB Wageningen, The Netherlands
| | - Antonius T. M. Marcelis
- Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The
Netherlands
| | - Mathieu Colomb-Delsuc
- Centre for Systems
Chemistry, Stratingh Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Sijbren Otto
- Centre for Systems
Chemistry, Stratingh Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Jasper van der Gucht
- Laboratory of Physical Chemistry and Colloid
Science, Wageningen University, Dreijenplein
6, 6703 HB Wageningen, The Netherlands
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Jia YG, Jiang J, Liu LY, Chang WX, Li J. Effect of cross-linker on morphology, catalytic activity, and recyclability of immobilized palladium chloride. J Appl Polym Sci 2012. [DOI: 10.1002/app.38417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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79
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Bhandari R, Knecht MR. Isolation of template effects that control the structure and function of nonspherical, biotemplated Pd nanomaterials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:8110-8119. [PMID: 22591186 DOI: 10.1021/la3015404] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Advances in nanotechnology have indicated that the passivant and the inorganic surface play a pivotal role in controlling the structure/function relationship of materials. Beyond standard materials-based methods, bioligands have recently demonstrated the production of unique nanomaterial morphologies for application under ambient conditions for multiple activities, such as catalysis and biosensing. We have recently demonstrated that a biotemplate technique could be employed to produce spherical and linear Pd nanostructures in water using a self-assembling peptide framework. The materials possessed high catalytic reactivity that was controlled by the three-dimensional structure of the composite materials. To investigate the effect of the peptide template on the reactivity of Pd nanostructures, an in depth analysis of the catalytic activity of Pd nanostructures fabricated via truncated templates is presented. The new templates were designed from portions of the original framework, which demonstrated unique synthetic and functionality control. Two different reactions, Stille C-C coupling and 4-nitrophenol reduction, were employed to ascertain the effect of template structure on the reactivity of synthesized Pd nanomaterials via changes in reagent diffusion through the bioscaffold. The results indicate that the peptide framework plays an important role and could be used to tune and optimize the functionality of the final composite materials for the target application.
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Affiliation(s)
- Rohit Bhandari
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
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80
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Elsabahy M, Wooley KL. Strategies Toward Well-Defined Polymer Nanoparticles Inspired by Nature: Chemistry versus Versatility. JOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY 2012; 50:1869-1880. [PMID: 25574072 PMCID: PMC4285366 DOI: 10.1002/pola.25955] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Polymeric nanoparticles are promising delivery platforms for various biomedical applications. One of the main challenges toward the development of therapeutic nanoparticles is the premature disassembly and release of the encapsulated drug. Among the different strategies to enhance the kinetic stability of polymeric nanoparticles, shell- and core-crosslinking have been shown to provide robust character, while creating a suitable environment for encapsulation of a wide range of therapeutics, including hydrophilic, hydrophobic, metallic, and small and large biomolecules, with gating of their release as well. The versatility of shell- and core-crosslinked nanoparticles is driven from the ease by which the structures of the shell- and core-forming polymers and crosslinkers can be modified. In addition, postmodification with cell-recognition moieties, grafting of antibiofouling polymers, or chemical degradation of the core to yield nanocages allow the use of these robust nanostructures as "smart" nanocarriers. The building principles of these multifunctional nanoparticles borrow analogy from the synthesis, supramolecular assembly, stabilization, and dynamic activity of the naturally driven biological nanoparticles such as proteins, lipoproteins, and viruses. In this review, the chemistry involved during the buildup from small molecules to polymers to covalently stabilized nanoscopic objects is detailed, with contrast of the strategies of the supramolecular assembly of polymer building blocks followed by intramicellar stabilization into shell-, core-, or core-shell-crosslinked knedel-like nanoparticles versus polymerization of polymers into nanoscopic molecular brushes followed by further intramolecular covalent stabilization events. The rational design of shell-crosslinked knedel-like nanoparticles is then elaborated for therapeutic packaging and delivery, with emphasis on the polymer chemistry aspects to accomplish the synthesis of such nanoparticulate systems.
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Affiliation(s)
- Mahmoud Elsabahy
- Department of Chemistry, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012 ; Department of Chemistry, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012 ; Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Karen L Wooley
- Department of Chemistry, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012 ; Department of Chemistry, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012 ; Department of Chemical Engineering, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012
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81
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Feng G, Jia YG, Liu LY, Chang WX, Li J. Well-defined polymers containing 1,3-dichloro-tetra-n-butyl-distannoxane moiety: Synthesis, mechanism, and applications in catalysis. J Appl Polym Sci 2012. [DOI: 10.1002/app.34820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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82
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Gao H. Development of star polymers as unimolecular containers for nanomaterials. Macromol Rapid Commun 2012; 33:722-34. [PMID: 22419360 DOI: 10.1002/marc.201200005] [Citation(s) in RCA: 134] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 02/10/2012] [Indexed: 12/18/2022]
Abstract
Star polymers containing one central core surrounded by multiple radiating arms represent an intriguing type of globular platform to be used as unimolecular containers and reactors. The core domain can encapsulate guest "cargos", whereas protective shell and chain ends can be functionalized with reactive groups and ligands. This Feature Article highlights the recent development on using core-shell structured amphiphilic star polymers as unimolecular containers for applications in drug delivery, catalysis, and template of hybrid nanomaterials. As compared with dendrimers, star polymers enjoy advantages of facile synthesis, flexible compositions, and tunable sizes, which allow them being able to carry more and multiple "cargos" within one molecule.
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Affiliation(s)
- Haifeng Gao
- Department of Chemistry and Biochemistry, 365 Stepan Chemistry Hall, University of Notre Dame, Notre Dame, IN 46556 USA.
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83
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Mugemana C, Gohy JF, Fustin CA. Functionalized nanoporous thin films from metallo-supramolecular diblock copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:3018-3023. [PMID: 22235922 DOI: 10.1021/la204920b] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A polystyrene-[Ni(2+)]-poly(ethylene oxide) metallo-supramolecular block copolymer (PS-[Ni(2+)]-PEO), where -[ is a terpyridine, is used to create nanoporous thin films with free terpyridine ligands homogenously distributed on the pore walls. The PS-[Ni(2+)]-PEO block copolymer is synthesized by a two step assembly process, and is then self-assembled into a thin film in order to obtain PEO cylinders oriented perpendicularly to the film surface. The supramolecular junction is opened by exposing the film to an excess of a competing ligand, and the free PEO block is then rinsed away by a selective solvent. The presence of the terpyridines on the pore walls is evidenced by fluorescence spectroscopy after formation of a fluorescent complex with an europium salt.
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Affiliation(s)
- Clément Mugemana
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter (BSMA), Université catholique de Louvain, Place Pasteur 1, 1348 Louvain-la-Neuve, Belgium
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84
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Sakai F, Chen G, Jiang M. A new story of cyclodextrin as a bulky pendent group causing uncommon behaviour to random copolymers in solution. Polym Chem 2012. [DOI: 10.1039/c2py00614f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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85
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Yuan W, Zou H, Guo W, Wang A, Ren J. Supramolecular amphiphilic star-branched copolymer: from LCST–UCST transition to temperature–fluorescence responses. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm35297d] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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86
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Tao W, Liu Y, Jiang B, Yu S, Huang W, Zhou Y, Yan D. A Linear-Hyperbranched Supramolecular Amphiphile and Its Self-Assembly into Vesicles with Great Ductility. J Am Chem Soc 2011; 134:762-4. [DOI: 10.1021/ja207924w] [Citation(s) in RCA: 213] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Tao
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P.R. China
| | - Yong Liu
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P.R. China
| | - Binbin Jiang
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P.R. China
| | - Songrui Yu
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P.R. China
| | - Wei Huang
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P.R. China
| | - Yongfeng Zhou
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P.R. China
| | - Deyue Yan
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P.R. China
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87
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LIU X, JIANG M. PREPARATION AND SOME RESEARCH HIGHLIGHTS OF POLYMER VESICLES AND HOLLOW SPHERES. ACTA POLYM SIN 2011. [DOI: 10.3724/sp.j.1105.2011.11169] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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88
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Xie M, Zhang L, Liao Y, Ding L, Zeng C, You Z. Preparation of reactive block copolymers and their transformation to hollowed nanostructures. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24951] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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89
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De Bo G, De Winter J, Gerbaux P, Fustin CA. Rotaxane-Based Mechanically Linked Block Copolymers. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103716] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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90
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De Bo G, De Winter J, Gerbaux P, Fustin CA. Rotaxane-Based Mechanically Linked Block Copolymers. Angew Chem Int Ed Engl 2011; 50:9093-6. [DOI: 10.1002/anie.201103716] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Indexed: 11/09/2022]
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91
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De Greef TFA, Kade MJ, Feldman KE, Kramer EJ, Hawker CJ, Meijer E. Spacer‐length‐dependent association in polymers with multiple‐hydrogen‐bonded end groups. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24868] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Tom F. A. De Greef
- Institute for Complex Molecular Systems, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Matthew J. Kade
- Department of Chemistry and Biochemistry, Materials Research Laboratory, University of California, Santa Barbara, California 93106
| | - Kathleen E. Feldman
- Department of Materials, Materials Research Laboratory, University of California, Santa Barbara, California 93106
| | - Edward J. Kramer
- Department of Chemical Engineering, Materials Research Laboratory, University of California, Santa Barbara, California 93106
- Department of Materials, Materials Research Laboratory, University of California, Santa Barbara, California 93106
| | - Craig J. Hawker
- Department of Chemistry and Biochemistry, Materials Research Laboratory, University of California, Santa Barbara, California 93106
| | - E.W. Meijer
- Institute for Complex Molecular Systems, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
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Feng X, Hu G, Hu J. Solution-phase synthesis of metal and/or semiconductor homojunction/heterojunction nanomaterials. NANOSCALE 2011; 3:2099-2117. [PMID: 21442125 DOI: 10.1039/c1nr00004g] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The design and architecture of programmable metal-semiconductor nanostructures with excellent optoelectronic properties from metal and semiconductor building blocks with nanoscale dimensions have been a key aim of material scientists due to their central roles in the fabrication of electronic, optical, and optoelectronic nanodevices. This review focuses on the latest advances in the solution-phase synthesis of metal and/or semiconductor homojunction/heterojunction nanomaterials. It begins with the simplest construction of metal/metal and semiconductor/semiconductor homojunctions, and then highlights the synthetic design of metal/metal and semiconductor/semiconductor heterojunction nanostructures with different building blocks. Special emphasis is placed on metal/semiconductor heterojunction nanomaterials, which are the most challenging and promising nanomaterials for future applications in optoelectronic nanodevices. Finally, this review concludes with personal perspectives on the directions for future research in this field.
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Affiliation(s)
- Xiumei Feng
- Department of Applied Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
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93
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94
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Zhang ZX, Liu KL, Li J. Self-Assembly and Micellization of a Dual Thermoresponsive Supramolecular Pseudo-Block Copolymer. Macromolecules 2011. [DOI: 10.1021/ma102196q] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhong-Xing Zhang
- Division of Bioengineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore
| | - Kerh Li Liu
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore
| | - Jun Li
- Division of Bioengineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore
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95
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Yan Q, Xin Y, Zhou R, Yin Y, Yuan J. Light-controlled smart nanotubes based on the orthogonal assembly of two homopolymers. Chem Commun (Camb) 2011; 47:9594-6. [DOI: 10.1039/c1cc12644j] [Citation(s) in RCA: 123] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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96
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97
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98
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Hamasaka G, Muto T, Uozumi Y. A novel amphiphilic pincer palladium complex: design, preparation and self-assembling behavior. Dalton Trans 2011; 40:8859-68. [DOI: 10.1039/c1dt10556f] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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99
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Hydrogen bonding-enhanced micelle assemblies for drug delivery. Biomaterials 2010; 31:8063-71. [DOI: 10.1016/j.biomaterials.2010.07.018] [Citation(s) in RCA: 155] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2010] [Accepted: 07/04/2010] [Indexed: 11/22/2022]
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100
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Gao H, Liu G, Chen X, Hao Z, Tong J, Lu L, Cai Y, Long F, Zhu M. Media-Modulated Interchain or Intrachain Coordination of Amphiphilic Block Copolymer Micelles. Macromolecules 2010. [DOI: 10.1021/ma100761a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Huan Gao
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan Province, Key Laboratory of Polymeric Materials & Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Guhuan Liu
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan Province, Key Laboratory of Polymeric Materials & Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Xuejun Chen
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan Province, Key Laboratory of Polymeric Materials & Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Zhenhua Hao
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan Province, Key Laboratory of Polymeric Materials & Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Jianyu Tong
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan Province, Key Laboratory of Polymeric Materials & Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Lican Lu
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan Province, Key Laboratory of Polymeric Materials & Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Yuanli Cai
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan Province, Key Laboratory of Polymeric Materials & Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Feng Long
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
| | - Mingqiang Zhu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
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