201
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Bagul RS, Rajesh YB, Jayamurugan G, Bera A, Sood A, Jayaraman N. Photophysical behavior of poly(propyl ether imine) dendrimer in the presence of nitroaromatic compounds. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2012.12.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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202
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Reymond JL, Bergmann M, Darbre T. Glycopeptide dendrimers as Pseudomonas aeruginosa biofilm inhibitors. Chem Soc Rev 2013; 42:4814-22. [PMID: 23370573 DOI: 10.1039/c3cs35504g] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Synthetic glycopeptide dendrimers composed of a branched oligopeptide tree structure appended with glycosidic groups at its multiple N-termini were investigated for binding to the Pseudomonas aeruginosa lectins LecB and LecA. These lectins are partly responsible for the formation of antibiotic resistant biofilms in the human pathogenic bacterium P. aeruginosa, which causes lethal airway infections in immune-compromised and cystic fibrosis patients. Glycopeptide dendrimers with high affinity to the lectins were identified by screening of combinatorial libraries. Several of these dendrimers, in particular the LecB specific glycopeptide dendrimers FD2 and D-FD2 and the LecA specific glycopeptide dendrimers GalAG2 and GalBG2, also efficiently block P. aeruginosa biofilm formation and induce biofilm dispersal in vitro. Structure-activity relationship and structural studies are reviewed, in particular the observation that multivalency is essential to the anti-biofilm effect in these dendrimers.
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Affiliation(s)
- Jean-Louis Reymond
- Department of Chemistry and Biochemistry, University of Berne, Freistrasse 3, 3012 Berne, Switzerland.
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203
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204
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Zhao P, Li N, Salmon L, Liu N, Ruiz J, Astruc D. How a simple “clicked” PEGylated 1,2,3-triazole ligand stabilizes gold nanoparticles for multiple usage. Chem Commun (Camb) 2013; 49:3218-20. [DOI: 10.1039/c3cc00269a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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205
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Albrecht K, Kasai Y, Kuramoto Y, Yamamoto K. A fourth-generation carbazole–phenylazomethine dendrimer as a size-selective host for fullerenes. Chem Commun (Camb) 2013; 49:865-7. [DOI: 10.1039/c2cc36451d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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206
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Abstract
The advent of dendritic chemistry has facilitated materials research by allowing precise control of functional component placement in macromolecular architecture. The iterative synthetic protocols used for dendrimer construction were developed based on the desire to craft highly branched, high molecular weight, molecules with exact mass and tailored functionality. Arborols, inspired by trees and precursors of the utilitarian macromolecules known as dendrimers today, were the first examples to employ predesigned, 1 → 3 C-branched, building blocks; physical characteristics of the arborols, including their globular shapes, excellent solubilities, and demonstrated aggregation, combined to reveal the inherent supramolecular potential (e.g., the unimolecular micelle) of these unique species. The architecture that is a characteristic of dendritic materials also exhibits fractal qualities based on self-similar, repetitive, branched frameworks. Thus, the fractal design and supramolecular aspects of these constructs are suggestive of a larger field of fractal materials that incorporates repeating geometries and are derived by complementary building block recognition and assembly. Use of terpyridine-M2+-terpyridine (where, M = Ru, Zn, Fe, etc) connectivity in concert with mathematical algorithms, such as forms the basis for the Seirpinski gasket, has allowed the beginning exploration of fractal materials construction. The propensity of the fractal molecules to self-assemble into higher order architectures adds another dimension to this new arena of materials and composite construction.
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207
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Poly(propylene imine) (PPIs) dendrimers modified with glyceryl moieties: Powerful catalysts for catecholase. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2012.10.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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208
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Caminade AM, Majoral JP. Positively charged phosphorus dendrimers. An overview of their properties. NEW J CHEM 2013. [DOI: 10.1039/c3nj00583f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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209
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Shiau SF, Juang TY, Chou HW, Liang M. Synthesis and properties of new water-soluble aliphatic hyperbranched poly(amido acids) with high pH-dependent photoluminescence. POLYMER 2013. [DOI: 10.1016/j.polymer.2012.12.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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210
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Albrecht K, Kasai Y, Kuramoto Y, Yamamoto K. Dynamic control of dendrimer–fullerene association by axial coordination to the core. Chem Commun (Camb) 2013; 49:6861-3. [DOI: 10.1039/c3cc43249a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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211
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Hierold J, Lupton DW. C–C bond fragmentation by Grob/Eschenmoser reactions, applications in dendrimer synthesis. Org Biomol Chem 2013; 11:6150-60. [DOI: 10.1039/c3ob40800k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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212
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Xu XD, Ou-Yang JK, Zhang J, Zhang YY, Gong HY, Yu Y, Yang HB. Self-assembly of supramolecular tris(crown ether) hexagons with dendritic dibenzylammonium cations. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.11.065] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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213
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von Gröning M, de Feijter I, Stuart MCA, Voets IK, Besenius P. Tuning the aqueous self-assembly of multistimuli-responsive polyanionic peptide nanorods. J Mater Chem B 2013; 1:2008-2012. [DOI: 10.1039/c3tb00051f] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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214
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Cao PF, Felipe MJ, Advincula RC. On the Formation and Electropolymerization of a Star Copolymer With Peripheral Carbazoles. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200344] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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215
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Kozaki M, Morita S, Suzuki S, Okada K. Construction of Snowflake-Shaped Dendritic Covalent Assemblies with Rigid Conjugated Networks. J Org Chem 2012; 77:9447-57. [DOI: 10.1021/jo3014512] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Masatoshi Kozaki
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585
Japan
| | - Shirou Morita
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585
Japan
| | - Shuichi Suzuki
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585
Japan
| | - Keiji Okada
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585
Japan
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216
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Yue X, Taraban MB, Hyland LL, Yu YB. Avoiding steric congestion in dendrimer growth through proportionate branching: a twist on da Vinci's rule of tree branching. J Org Chem 2012; 77:8879-87. [PMID: 23039185 DOI: 10.1021/jo301718y] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Making defect-free macromolecules is a challenging issue in chemical synthesis. This challenge is especially pronounced in dendrimer synthesis where exponential growth quickly leads to steric congestion. To overcome this difficulty, proportionate branching in dendrimer growth is proposed. In proportionate branching, both the number and the length of branches increase exponentially but in opposite directions to mimic tree growth. The effectiveness of this strategy is demonstrated through the synthesis of a fluorocarbon dendron containing 243 chemically identical fluorine atoms with a MW of 9082 Da. Monodispersity is confirmed by nuclear magnetic resonance spectroscopy, mass spectrometry, and small-angle X-ray scattering. Growing different parts proportionately, as nature does, could be a general strategy to achieve defect-free synthesis of macromolecules.
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Affiliation(s)
- Xuyi Yue
- Department of Pharmaceutical Sciences, University of Maryland, 20 North Pine Street, Baltimore, Maryland 21201, USA
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217
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Li QJ, Zhao GZ, Chen LJ, Tan H, Wang CH, Wang DX, Lehman DA, Muddiman DC, Yang HB. Coordination-Driven Self-Assembly of Charged and Neutral Dendritic Tetrakis(ferrocenyl) Rhomboids. Organometallics 2012. [DOI: 10.1021/om3007932] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Quan-Jie Li
- Department of Chemistry, Beijing Normal University, Beijing 100050, People's Republic of China
| | - Guang-Zhen Zhao
- Shanghai Key Laboratory of Green
Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062,
People's Republic of China
| | - Li-Jun Chen
- Shanghai Key Laboratory of Green
Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062,
People's Republic of China
| | - Hongwei Tan
- Department of Chemistry, Beijing Normal University, Beijing 100050, People's Republic of China
| | - Cui-Hong Wang
- Shanghai Key Laboratory of Green
Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062,
People's Republic of China
| | - De-Xian Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory
of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's
Republic of China
| | - Danielle A. Lehman
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina
27695, United States
| | - David C. Muddiman
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina
27695, United States
| | - Hai-Bo Yang
- Shanghai Key Laboratory of Green
Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062,
People's Republic of China
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218
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Popa F, Lameiras P, Moldovan O, Tomoaia-Cotisel M, Henon E, Martinez A, Sacalis C, Mocanu A, Ramondenc Y, Darabantu M. Design, synthesis and structure of new dendritic melamines. First use of a tandem C-2-substituted serinol—O,O-masked 4-piperidone as a peripheral unit in iterative synthesis. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.07.096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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219
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Lin Y, Sun J. Vinyl-terminated liquid-crystalline dendrimers based on dendritic polyols and their siloxane-based elastomers. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26373] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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220
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Strašák T, Čermák J, Sýkora J, Horský J, Walterová Z, Jaroschik F, Harakat D. Carbosilane Metallodendrimers with Titanocene Dichloride End Groups. Organometallics 2012. [DOI: 10.1021/om300559y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Tomáš Strašák
- Institute of Chemical Process
Fundamentals, v.v.i., Academy of Sciences of the Czech Republic, Rozvojová
135, 165 02 Prague 6, Czech Republic
| | - Jan Čermák
- Institute of Chemical Process
Fundamentals, v.v.i., Academy of Sciences of the Czech Republic, Rozvojová
135, 165 02 Prague 6, Czech Republic
| | - Jan Sýkora
- Institute of Chemical Process
Fundamentals, v.v.i., Academy of Sciences of the Czech Republic, Rozvojová
135, 165 02 Prague 6, Czech Republic
| | - Jiří Horský
- Institute of Macromolecular Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Heyrovského
nám. 2, 162 06 Prague 6, Czech Republic
| | - Zuzana Walterová
- Institute of Macromolecular Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Heyrovského
nám. 2, 162 06 Prague 6, Czech Republic
| | - Florian Jaroschik
- Institut de Chimie Moléculaire de Reims, UMR, CNRS 7312, Case postale
44 UFR des Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex
2, France
| | - Dominique Harakat
- Institut de Chimie Moléculaire de Reims, UMR, CNRS 7312, Case postale
44 UFR des Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex
2, France
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221
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Chen S, Chen LJ, Yang HB, Tian H, Zhu W. Light-Triggered Reversible Supramolecular Transformations of Multi-Bisthienylethene Hexagons. J Am Chem Soc 2012; 134:13596-9. [DOI: 10.1021/ja306748k] [Citation(s) in RCA: 224] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Shangjun Chen
- Key Laboratory
for Advanced
Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237,
P. R. China
| | - Li-Jun Chen
- Shanghai Key
Laboratory of Green
Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, P. R.
China
| | - Hai-Bo Yang
- Shanghai Key
Laboratory of Green
Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, P. R.
China
| | - He Tian
- Key Laboratory
for Advanced
Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237,
P. R. China
| | - Weihong Zhu
- Key Laboratory
for Advanced
Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237,
P. R. China
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222
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Herrero M, Alonso B, Losada J, Garcı́a-Armada P, Casado CM. Ferrocenyl Dendrimers Based on Octasilsesquioxane Cores. Organometallics 2012. [DOI: 10.1021/om300591p] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Marta Herrero
- Departamento de Quı́mica Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049-Madrid, Spain
| | - Beatriz Alonso
- Departamento de Quı́mica Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049-Madrid, Spain
| | - José Losada
- Departamento de Ingenierı́a Quı́mica Industrial, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006-Madrid,
Spain
| | - Pilar Garcı́a-Armada
- Departamento de Ingenierı́a Quı́mica Industrial, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006-Madrid,
Spain
| | - Carmen M. Casado
- Departamento de Quı́mica Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049-Madrid, Spain
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223
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Lamanna G, Russier J, Dumortier H, Bianco A. Enhancement of anti-inflammatory drug activity by multivalent adamantane-based dendrons. Biomaterials 2012; 33:5610-7. [DOI: 10.1016/j.biomaterials.2012.03.072] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Accepted: 03/22/2012] [Indexed: 12/20/2022]
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224
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Dendritic Molecular Nanobatteries and the Contribution of Click Chemistry. J Inorg Organomet Polym Mater 2012. [DOI: 10.1007/s10904-012-9720-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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225
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Senchyk GA, Lysenko AB, Boldog I, Rusanov EB, Chernega AN, Krautscheid H, Domasevitch KV. 1,2,4-Triazole functionalized adamantanes: a new library of polydentate tectons for designing structures of coordination polymers. Dalton Trans 2012; 41:8675-89. [PMID: 22688883 DOI: 10.1039/c2dt30362k] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of functionalized adamantanes: 1,3-bis(1,2,4-triazol-4-yl)(tr(2)ad); 1,3,5-tris(1,2,4-triazol-4-yl)-(tr(3)ad); 1,3,5,7-tetrakis(1,2,4-triazol-4-yl)adamantanes (tr(4)ad) and 3,5,7-tris(1,2,4-triazol-4-yl)-1-azaadamantane (tr(3)ada) were developed as a new family of geometrically rigid polydentate tectons for supramolecular synthesis of framework solids. The coordination compounds were prepared under hydrothermal conditions; their structures reveal a special potential of the triazolyl adamantanes for the generation of highly-connected and open frameworks as well as structures based upon polynuclear metal clusters assembled with short-distance N(1),N(2)-triazole bridges. Complexes [Cd{L}(2)]A·nH(2)O [L = tr(3)ad, A = 2NO(3)(-) (4), CdCl(4)(2-) (5); L = tr(3)ada, A = CdI(4)(2-) (7)] are isomorphous and adopt a layered 3,6-connected structure of CdI(2) type. [{Cu(3)(OH)}(2)(SO(4))(5)(H(2)O)(2){tr(3)ad}(3)]·26H(2)O (6) is a layered polymer based upon Cu(3)(μ(3)-OH) nodes and trigonal tr(3)ad links. In [Cu(3)(OH)(2){tr(3)ada}(2)(H(2)O)(4)](ClO(4))(4) (8), [Cu(2){tr(3)ada}(2)(H(2)O)(3)](SO(4))(2)·7H(2)O (9) and [Cd(2){tr(3)ada}(3)]Cl(4)·28H(2)O (10) (UCl(3)-type net) the organic tripodal ligands bridge polynuclear metal clusters. Complexes [Ag{tr(4)ad}]NO(3)·3.5H(2)O (11) and [Cu{tr(4)ad}(H(2)O)](ClO(4))(2)·3H(2)O (12) have 3D SrAl(2)-type frameworks with the metal ions and adamantane tectons as topologically equivalent tetrahedral nodes, while in [Cd(3)Cl(6){tr(4)ad}(2)]·9H(2)O (13) the ligands bridge trinuclear six-connected Cd(3)Cl(6)(μ-tr)(4)(tr)(2) clusters. In the compounds [Cd(2){tr(2)ad}(4)(H(2)O)(4)](CdBr(4))(2)·2H(2)O (2) and [Cd{tr(2)ad}(4){CdI(3)}(2)]·4H(2)O (3) the bitopic ligands provide simple links between the metal ions, while in [Ag(2){tr(2)ad}(2)](NO(3))(2)·2H(2)O (1) the ligand is tetradentate and generates a 3D framework.
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Affiliation(s)
- Ganna A Senchyk
- Inorganic Chemistry Department, National Taras Shevchenko University of Kyiv, Volodimirska Street 64, Kyiv 01033, Ukraine
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226
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Fürstenberg F, Dolgushev M, Blumen A. Analytical model for the dynamics of semiflexible dendritic polymers. J Chem Phys 2012; 136:154904. [PMID: 22519347 DOI: 10.1063/1.3703757] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Florian Fürstenberg
- Theoretical Polymer Physics, University of Freiburg, Hermann-Herder-Str. 3, D-79104 Freiburg, Germany.
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227
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Astruc D, Liang L, Rapakousiou A, Ruiz J. Click dendrimers and triazole-related aspects: catalysts, mechanism, synthesis, and functions. A bridge between dendritic architectures and nanomaterials. Acc Chem Res 2012; 45:630-40. [PMID: 22148925 DOI: 10.1021/ar200235m] [Citation(s) in RCA: 267] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
One of the primary recent improvements in molecular chemistry is the now decade-old concept of click chemistry. Typically performed as copper-catalyzed azide-alkyne (CuAAC) Huisgen-type 1,3-cycloadditions, this reaction has many applications in biomedicine and materials science. The application of this chemistry in dendrimer synthesis beyond the zeroth generation and in nanoparticle functionalization requires stoichiometric use of the most common click catalyst, CuSO(4)·5H(2)O with sodium ascorbate. Efforts to develop milder reaction conditions for these substrates have led to the design of polydentate nitrogen ligands. Along these lines, we have described a new, efficient, practical, and easy-to-synthesize catalytic complex, [Cu(I)(hexabenzyltren)]Br, 1 [tren = tris(2-aminoethyl)amine], for the synthesis of relatively large dendrimers and functional gold nanoparticles (AuNPs). This efficient catalyst can be used alone in 0.1% mol amounts for nondendritic click reactions or with the sodium-ascorbate additive, which inhibits aerobic catalyst oxidation. Alternatively, catalytic quantities of the air-stable compounds hexabenzyltren and CuBr added to the click reaction medium can provide analogously satisfactory results. Based on this catalyst as a core, we have also designed and synthesized analogous Cu(I)-centered dendritic catalysts that are much less air-sensitive than 1 and are soluble in organic solvents or in water (depending on the nature of the terminal groups). These multivalent catalysts facilitate efficient click chemistry and exert positive dendritic effects that mimic enzyme activity. We propose a monometallic CuAAC click mechanism for this process. Although the primary use of click chemistry with dendrimers has been to decorate dendrimers with a large number of molecules for medicinal or materials purposes, we are specifically interested in the formation of intradendritic [1,2,3]-triazole heterocycles that coordinate to transition-metal ions via their nitrogen atoms. We describe applications including molecular recognition of anions and cations and the stabilization of transition metal nanoparticles according to a principle pioneered by Crooks with poly(amido amine) (PAMAM) dendrimers, and in particular, the control of structural and reactivity parameters in which the intradendritic [1,2,3]-triazoles and peripheral tripodal tri(ethylene glycol) termini play key roles in the click-dendrimer mediated synthesis and stabilization of gold nanoparticles (AuNPs). By varying these parameters, we have stabilized water-soluble, weakly liganded AuNPs between 1.8 and 50 nm in size and have shown large differences in behavior between AuNPs and PdNPs. Overall, the new catalyst design and the possibilities of click dendrimer chemistry introduce a bridge between dendritic architectures and the world of nanomaterials for multiple applications.
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Affiliation(s)
- Didier Astruc
- Institut des Sciences Moléculaires, UMR CNRS No. 5255, Université Bordeaux 1, 33405 Talence Cedex, France
| | - Liyuan Liang
- Institut des Sciences Moléculaires, UMR CNRS No. 5255, Université Bordeaux 1, 33405 Talence Cedex, France
| | - Amalia Rapakousiou
- Institut des Sciences Moléculaires, UMR CNRS No. 5255, Université Bordeaux 1, 33405 Talence Cedex, France
| | - Jaime Ruiz
- Institut des Sciences Moléculaires, UMR CNRS No. 5255, Université Bordeaux 1, 33405 Talence Cedex, France
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228
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Affiliation(s)
- Jingjing Hu
- CAS Key Laboratory of Soft Matter
Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People’s
Republic of China
| | - Tongwen Xu
- CAS Key Laboratory of Soft Matter
Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People’s
Republic of China
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory
Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, People’s Republic of China
- Shanghai
Key Laboratory of Magnetic
Resonance, Department of Physics, East China Normal University, Shanghai, 200062, P.R.China
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229
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Das I, Goel N, Gupta SK, Agrawal NR. Electropolymerization of pyrrole: Dendrimers, nano-sized patterns and oscillations in potential in presence of aromatic and aliphatic surfactants. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2012.01.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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230
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Astruc D. Electron-transfer processes in dendrimers and their implication in biology, catalysis, sensing and nanotechnology. Nat Chem 2012; 4:255-67. [PMID: 22437709 DOI: 10.1038/nchem.1304] [Citation(s) in RCA: 252] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The extraordinary development of the design and synthesis of dendrimers has allowed scientists to locate redox sites at precise positions (core, focal points, branching points, termini, cavities) of these perfectly defined macromolecules, which have generation-controlled sizes and topologies matching those of biomolecules. Redox-dendrimer engineering has led to fine modelling studies of electron-transfer metalloproteins, in which the branches of the dendrimers hinder access to the active site in a manner reminiscent of that of the protein. It has also enabled the construction of remarkable catalysts, sensors and printboards, including by sophisticated design of the interface between redox dendrimers and solid-state devices - for example by functionalizing electrodes and other surfaces. Electron-transfer processes between dendrimers and a variety of other molecules hold promising applications in diverse areas that range from bio-engineering to sensing, catalysis and energy materials.
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Affiliation(s)
- Didier Astruc
- ISM, UMR CNRS No. 5255, Univ. Bordeaux, 33405 Talence Cedex, France.
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231
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Siebert R, Winter A, Schmitt M, Popp J, Schubert US, Dietzek B. Light-Induced Dynamics in Conjugated Bis(terpyridine) Ligands - A Case Study Toward Photoactive Coordination Polymers. Macromol Rapid Commun 2012; 33:481-97. [DOI: 10.1002/marc.201100753] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 01/02/2012] [Indexed: 12/25/2022]
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232
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234
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Zhang Q, Wang N, Xu T, Cheng Y. Poly(amidoamine) dendronized hollow fiber membranes: synthesis, characterization, and preliminary applications as drug delivery devices. Acta Biomater 2012; 8:1316-22. [PMID: 22154857 DOI: 10.1016/j.actbio.2011.11.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Revised: 11/15/2011] [Accepted: 11/21/2011] [Indexed: 10/14/2022]
Abstract
Poly(amidoamine) (PAMAM) dendrons were prepared from hollow fiber membranes (HFM) consisting of bromomethylated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO) in a stepwise manner. The prepared HFM were characterized by Fourier transform infrared spectroscopy, elemental analysis, and scanning electron microscopy. The drug loading efficiency and release behavior of the PAMAM dendronized HFM were evaluated using sodium salicylate, sodium methotrexate, and Congo red as model drugs. The results suggest that PAMAM dendronized HFM can be effectively loaded with a variety of drugs and prolong the release of these drugs. The drug loading and release characteristics of the HFM depend on the generation of PAMAM dendrons grafted on the membranes. The prepared PAMAM dendronized BPPO HFM are promising scaffolds in drug delivery and tissue engineering.
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235
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Bagul RS, Jayaraman N. Efficacies of multivalent vs monovalent poly(ether imine) dendritic catalysts within a generation in multiple C–C bond forming reactions. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2011.11.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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236
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Garzoni M, Cheval N, Fahmi A, Danani A, Pavan GM. Ion-selective controlled assembly of dendrimer-based functional nanofibers and their ionic-competitive disassembly. J Am Chem Soc 2012; 134:3349-57. [PMID: 22263548 DOI: 10.1021/ja206611s] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The construction of hierarchical materials through controlled self-assembly of molecular building blocks (e.g., dendrimers) represents a unique opportunity to generate functional nanodevices in a convenient way. Transition-metal compounds are known to be able to interact with cationic dendrimers to generate diverse supramolecular structures, such as nanofibers, with interesting collective properties. In this work, molecular dynamics simulation (MD) demonstrates that acetate ions from dissociated Cd(CH(3)COO)(2) selectively generate cationic PPI-dendrimer functional fibers through hydrophobic modification of the dendrimer's surface. The hydrophobic aggregation of dendrimers is triggered by the asymmetric nature of the acetate anions (AcO(-)) rather than by the precise transition metal (Cd). The assembling directionality is also controlled by the concentration of AcO(-) ions in solution. Atomic force (AFM) and transmission electron microscopy (TEM) prove these results. This well-defined directional assembly of cationic dendrimers is absent for different cadmium derivatives (i.e., CdCl(2), CdSO(4)) with symmetric anions. Moreover, since the formation of these nanofibers is controlled exclusively by selected anions, fiber disassembly can be consequently triggered via simple ionic competition by NaCl salt. Ions are here reported as a simple and cost-effective tool to drive and control actively the assembly and the disassembly of such functional nanomaterials based on dendrimers.
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Affiliation(s)
- Matteo Garzoni
- Laboratory of Applied Mathematics and Physics, University of Applied Sciences of Southern Switzerland, Centro Galleria 2, Manno, 6928, Switzerland
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237
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Natarajan B, Gupta S, Jayaraj N, Ramamurthy V, Jayaraman N. Dynamic Internal Cavities of Dendrimers as Constrained Media. A Study of Photochemical Isomerizations of Stilbene and Azobenzene Using Poly(alkyl aryl ether) Dendrimers. J Org Chem 2012; 77:2219-24. [DOI: 10.1021/jo2024027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Baskar Natarajan
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Shipra Gupta
- Department of Chemistry, University of Miami, Coral Gables, Florida 33124, United
States
| | - Nithyanandhan Jayaraj
- Department of Chemistry, University of Miami, Coral Gables, Florida 33124, United
States
| | - V. Ramamurthy
- Department of Chemistry, University of Miami, Coral Gables, Florida 33124, United
States
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238
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Lubczyk D, Grill M, Baumgarten M, Waldvogel SR, Müllen K. Scaffold-Optimized Dendrimers for the Detection of the Triacetone Triperoxide Explosive Using Quartz Crystal Microbalances. Chempluschem 2012. [DOI: 10.1002/cplu.201100080] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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239
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Reymond JL, Darbre T. Peptide and glycopeptide dendrimer apple trees as enzyme models and for biomedical applications. Org Biomol Chem 2012; 10:1483-92. [PMID: 22274649 DOI: 10.1039/c2ob06938e] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Solid phase peptide synthesis (SPPS) provides peptides with a dendritic topology when diamino acids are introduced in the sequences. Peptide dendrimers with one to three amino acids between branches can be prepared with up to 38 amino acids (MW ~ 5,000 Da). Larger peptide dendrimers (MW ~ 30,000) were obtained by a multivalent chloroacetyl cysteine (ClAc) ligation. Structural studies of peptide dendrimers by CD, FT-IR, NMR and molecular dynamics reveal molten globule states containing up to 50% of α-helix. Esterase and aldolase peptide dendrimers displaying dendritic effects and enzyme kinetics (k(cat)/k(uncat) ~ 10(5)) were designed or discovered by screening large combinatorial libraries. Strong ligands for Pseudomonas aeruginosa lectins LecA and LecB able to inhibit biofilm formation were obtained with glycopeptide dendrimers. Efficient ligands for cobalamin, cytotoxic colchicine conjugates and antimicrobial peptide dendrimers were also developed showing the versatility of dendritic peptides. Complementing the multivalency, the amino acid composition of the dendrimers strongly influenced the catalytic or biological activity obtained demonstrating the importance of the "apple tree" configuration for protein-like function in peptide dendrimers.
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Affiliation(s)
- Jean-Louis Reymond
- Department of Chemistry and Biochemistry, University of Berne, Berne, Switzerland.
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240
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Ghosh PS, Hamilton AD. Supramolecular dendrimers: convenient synthesis by programmed self-assembly and tunable thermoresponsivity. Chemistry 2012; 18:2361-5. [PMID: 22267264 DOI: 10.1002/chem.201103051] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Indexed: 11/08/2022]
Abstract
We report here the noncovalent synthesis of thermosensitive dendrimers. Short oligoguanosine strands were linked to the focal point of a dendron by using "click chemistry", and quadruplex formation was used to drive the self-assembly process in the presence of metal ions. The dynamic nature of these noncovalent assemblies can be exploited to create combinatorial libraries of dendrimers as demonstrated by the co-assembly of two components. These supramolecular dendrimers showed thermoresponsive behavior that can be tuned by varying the templating cations or the number of guanines in the oligonucleotide strand.
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Affiliation(s)
- Partha S Ghosh
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, CT 06520-8107, USA
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241
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El Kazzouli S, Mignani S, Bousmina M, Majoral JP. Dendrimer therapeutics: covalent and ionic attachments. NEW J CHEM 2012. [DOI: 10.1039/c1nj20459a] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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243
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244
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El Kadib A, Katir N, Bousmina M, Majoral JP. Dendrimer–silica hybrid mesoporous materials. NEW J CHEM 2012. [DOI: 10.1039/c1nj20443b] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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245
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R. Newkome G, Patri A, N. Moorefield C. Dendronized Bi-2-quinoline Ligands and Their Metal Complexes: Dendron Synthesis and Metalloassembly. HETEROCYCLES 2012. [DOI: 10.3987/com-11-s(p)80] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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246
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Lee CC, Leung MK, Lee PY, Chiu TL, Lee JH, Liu C, Chou PT. Synthesis and Properties of Oxygen-Linked N-Phenylcarbazole Dendrimers. Macromolecules 2011. [DOI: 10.1021/ma202433y] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | | | - Pei-Yu Lee
- Department of Photonics Engineering, Yuan Ze University, Taoyuan 32003, Taiwan
| | - Tien-Lung Chiu
- Department of Photonics Engineering, Yuan Ze University, Taoyuan 32003, Taiwan
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247
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Schunk T, Hirsch A. Dendritic Architectures with Positively Charged Cores and Negatively Charged Shells. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101619] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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248
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Mintzer MA, Dane EL, O'Toole GA, Grinstaff MW. Exploiting dendrimer multivalency to combat emerging and re-emerging infectious diseases. Mol Pharm 2011; 9:342-54. [PMID: 22126461 DOI: 10.1021/mp2005033] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The emergence and re-emergence of bacterial strains that are resistant to current antibiotics reveal the clinical need for new agents that possess broad-spectrum antibacterial activity. Furthermore, bacteriophobic coatings that repel bacteria are important for medical devices, as the lifetime, reliability, and performance of implant devices are hindered by bacterial adhesion and infection. Dendrimers, a specific class of monodisperse macromolecules, have recently shown potential to function as both antibacterial agents and antimicrobial surface coatings. This review discusses the limitations with currently used antibacterial agents and describes how various classes of dendrimers, including glycodendrimers, cationic dendrimers, anionic dendrimers, and peptide dendrimers, have the potential to improve upon or replace certain antibiotics. Furthermore, the unexplored areas in this field of research will be mentioned to present opportunities for additional studies regarding the use of dendrimers as antimicrobial agents.
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Affiliation(s)
- Meredith A Mintzer
- Department of Biomedical Engineering and Chemistry, Boston University, Boston, Massachusetts 02215, United States
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249
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Thermotropic Mesomorphism via Self-Assembly of Cationic Dendritic Polymers with an Anionic Polar Carboxylic Acid. MACROMOL CHEM PHYS 2011. [DOI: 10.1002/macp.201100469] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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250
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Liang L, Ruiz J, Astruc D. The Efficient Copper(I) (Hexabenzyl)tren Catalyst and Dendritic Analogues for Green “Click” Reactions between Azides and Alkynes in Organic Solvent and in Water: Positive Dendritic Effects and Monometallic Mechanism. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100449] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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