151
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152
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Padie C, Turrin CO, Caminade AM, Majoral JP, Furer VL, Vandyukova II, Kovalenko VI. Synthesis and comparative characteristic of organophosphorus dendrimers with phenoxy and deuterophenoxy end groups. RUSS J GEN CHEM+ 2008. [DOI: 10.1134/s1070363208110479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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153
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Abou-Kandil AI, Knoll W. Molecular modelling of N,N-disubstituted hydrazine phosphorus-containing dendrimers of the fourth generation. MOLECULAR SIMULATION 2008. [DOI: 10.1080/08927020801961468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | - Wolfgang Knoll
- a Max-Planck Institute for Polymer Research , Mainz, Germany
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154
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Wurm F, Schüle H, Frey H. Amphiphilic Linear-Hyperbranched Block Copolymers with Linear Poly(ethylene oxide) and Hyperbranched Poly(carbosilane) Block. Macromolecules 2008. [DOI: 10.1021/ma8018427] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Frederik Wurm
- Institute of Organic Chemistry, Organic and Macromolecular Chemistry, Duesbergweg 10-14, Johannes Gutenberg-University Mainz, D-55099 Mainz, Germany
| | - Hanna Schüle
- Institute of Organic Chemistry, Organic and Macromolecular Chemistry, Duesbergweg 10-14, Johannes Gutenberg-University Mainz, D-55099 Mainz, Germany
| | - Holger Frey
- Institute of Organic Chemistry, Organic and Macromolecular Chemistry, Duesbergweg 10-14, Johannes Gutenberg-University Mainz, D-55099 Mainz, Germany
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155
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Martínez-Ferrero E, Franc G, Mazères S, Turrin CO, Boissière C, Caminade AM, Majoral JP, Sanchez C. Optical properties of hybrid dendritic-mesoporous titania nanocomposite films. Chemistry 2008; 14:7658-69. [PMID: 18668494 DOI: 10.1002/chem.200800606] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
New hybrid optical sensors have been prepared by grafting specifically designed fluorescent, functionalised, phosphorus-containing dendrimers onto a nanocrystalline mesoporous titania thin film formed by evaporation-induced self-assembly. The structural characterisation and optical behaviour of these new fluorescent probes have been studied both in solution and after being grafted onto an inorganic network, which resulted in the discovery of improved probing selectivity in the solid state. This new hybrid sensor exhibits high sensitivity to phenolic OH moieties (especially those from resorcinol and 2-nitroresorcinol), which induce the quenching of fluorescence more efficiently in the solid state than in solution. This effect is a result of the increased spatial proximity of the fluorescent molecules, which is induced by pore confinement that makes the formation of hydrogen bonds between the hydroxyl moieties of the quenchers and the carbonyl groups of the dendrimer easier.
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Affiliation(s)
- Eugenia Martínez-Ferrero
- Laboratoire de Chimie de la Matière Condensée, Université Pierre et Marie Curie, 4 Place Jussieu, Paris Cedex 05, France
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156
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Amadoruge ML, Weinert CS. Singly bonded catenated germanes: eighty years of progress. Chem Rev 2008; 108:4253-94. [PMID: 18816144 DOI: 10.1021/cr800197r] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Monika L Amadoruge
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, USA
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157
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Feng X, Taton D, Ibarboure E, Chaikof EL, Gnanou Y. Janus-type dendrimer-like poly(ethylene oxide)s. J Am Chem Soc 2008; 130:11662-76. [PMID: 18681431 PMCID: PMC2723772 DOI: 10.1021/ja7103119] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A straightforward and original methodology allowing the synthesis of Janus-type dendrimer-like poly(ethylene oxide)s (PEOs) carrying orthogonal functional groups on their surface is described. The use of 3-allyloxy-1,2-propanediol (1) as a latent AB2-type heterofunctional initiator of anionic ring-opening polymerization (AROP) of ethylene oxide (EO) and of selective branching agents of PEO chain ends served to construct the two dendrons of these dendrimer-like PEOs, following a divergent pathway. Thus, the first PEO generation of the first dendron was grown by AROP from 1 followed by the reaction of the corresponding alpha-allyl,omega,omega'-bishydroxy- heterofunctional PEO derivative with 2-(3'-chloromethybenzyloxymethyl)-2-methyl-5,5-dimethyl-1,3-dioxane (2) used as a branching agent. This afforded the dendron A with four latent peripheral hydroxyls protected in the form of two ketal rings. The remaining alpha-allylic double bond of the PEO thus prepared was transformed into two hydroxyl groups using OsO4 in order to create the first PEO generation of the dendron B by AROP of EO. Allyl chloride (3) was then used as another (latent) branching agent to react with the terminal hydroxyl of the corresponding PEO chains. Deprotection under acidic conditions of the ketal groups of dendron A, followed by AROP of EO, afforded the second PEO generation on this face. This alternate and divergent procedure, combining AROP of EO and selective branching of PEO branches, could be readily iterated, one dendron after the other up to the generation six, leading to a Janus-type dendrimer-like PEO exhibiting a total mass of around 300 kg/mol and possessing 64 peripheral groups on each face. The possibility of orthogonal functionalization of the surfaces of such Janus-type dendritic PEOs was exploited. Indeed, a dendron of generation 4 was functionalized with hydroxyl functions at its periphery, whereas the other was end-capped with either tertiary amino or disulfide groups. In a variant of this strategy, azido groups and acetylene could also be orthogonally introduced at the periphery of the fourth generation Janus-type dendrimer-like PEO and subjected to polycondensation by a 1,3-dipolar cycloaddition reaction. This afforded a necklace-like covalent assembly of dendrimer-like PEOs through the formation of stable [1,2,3]-triazole linkages.
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Affiliation(s)
- Xiaoshuang Feng
- Laboratoire de Chimie des Polymères Organiques, Université Bordeaux 1, ENSCPB 16, Avenue Pey Berland, 33607 Pessac cedex, France
| | - Daniel Taton
- Laboratoire de Chimie des Polymères Organiques, Université Bordeaux 1, ENSCPB 16, Avenue Pey Berland, 33607 Pessac cedex, France
| | - Emmanuel Ibarboure
- Laboratoire de Chimie des Polymères Organiques, Université Bordeaux 1, ENSCPB 16, Avenue Pey Berland, 33607 Pessac cedex, France
| | - Elliot L. Chaikof
- Laboratory for Biomolecular Materials Research, Department of Surgery, Emory University School of Medicine, Atlanta, Georgia 30322
| | - Yves Gnanou
- Laboratoire de Chimie des Polymères Organiques, Université Bordeaux 1, ENSCPB 16, Avenue Pey Berland, 33607 Pessac cedex, France
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158
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Predvoditelev DA, Malenkovskaya MA, V’yunskovskaya OV, Nifant’ev EE. Pioneering examples of preparative phosphorylation of pentaerythritol. RUSS J GEN CHEM+ 2008. [DOI: 10.1134/s1070363208080070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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159
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Oka H, Onaga T, Koyama T, Guo CT, Suzuki Y, Esumi Y, Hatano K, Terunuma D, Matsuoka K. Sialyl α(2→3) lactose clusters using carbosilane dendrimer core scaffolds as influenza hemagglutinin blockers. Bioorg Med Chem Lett 2008; 18:4405-8. [DOI: 10.1016/j.bmcl.2008.06.101] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2008] [Revised: 06/16/2008] [Accepted: 06/17/2008] [Indexed: 11/15/2022]
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160
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Gomez-Escudero A, Azagarsamy MA, Theddu N, Vachet RW, Thayumanavan S. Selective peptide binding using facially amphiphilic dendrimers. J Am Chem Soc 2008; 130:11156-63. [PMID: 18661986 DOI: 10.1021/ja803082v] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Amphiphilic dendrimers, which contain both hydrophobic and hydrophilic groups in every repeat unit, exhibit environment-dependent assemblies both in hydrophilic solvent, water, and in lipophilic solvent, toluene. Upon investigating the status of these assemblies in a mixture of immiscible solvents, these dendrimers were found to be kinetically trapped in the solvent in which they are initially assembled. This property has been exploited to selectively extract peptides from aqueous solution into an organic phase, where the peptides bind to the interior functionalities of the dendritic inverse micelles. While the corresponding small molecule surfactant does not exhibit any selective binding toward peptides, all dendrons (G1-G3) are capable of this selective binding. We show that the inverse micelle-type assembly itself is crucial for the binding event and that the assembly formed by the G1 dendron has a greater capability for binding compared to the G2 or G3 dendrons. We have also shown that the average apparent pKa of the carboxylic acid functionalities varies with generation, and this could be the reason for the observed differences in binding capacity.
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Affiliation(s)
- Andrea Gomez-Escudero
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, USA
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161
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Rolland O, Griffe L, Poupot M, Maraval A, Ouali A, Coppel Y, Fournié JJ, Bacquet G, Turrin CO, Caminade AM, Majoral JP, Poupot R. Tailored Control and Optimisation of the Number of Phosphonic Acid Termini on Phosphorus-Containing Dendrimers for the Ex-Vivo Activation of Human Monocytes. Chemistry 2008; 14:4836-50. [DOI: 10.1002/chem.200701063] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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162
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Kose MM, Yesilbag G, Sanyal* A. Segment Block Dendrimers via Diels−Alder Cycloaddition. Org Lett 2008; 10:2353-6. [DOI: 10.1021/ol800553t] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Merve Kose
- Bogazici University, Chemistry Department, 34342 Bebek, Istanbul, Turkey
| | - Gulen Yesilbag
- Bogazici University, Chemistry Department, 34342 Bebek, Istanbul, Turkey
| | - Amitav Sanyal*
- Bogazici University, Chemistry Department, 34342 Bebek, Istanbul, Turkey
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163
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Dash BP, Satapathy R, Maguire JA, Hosmane NS. Synthesis of a new class of carborane-containing star-shaped molecules via silicon tetrachloride promoted cyclotrimerization reactions. Org Lett 2008; 10:2247-50. [PMID: 18465864 DOI: 10.1021/ol8005248] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Symmetrical star-shaped molecules with carborane clusters on the periphery have been synthesized in good yields via silicon tetrachloride mediated cyclotrimerization reactions of 9-benzyl derivatives of carboranes with acetyl group substitution on the benzene ring. Facile functionalization of these symmetrical core structures with 1-iodoheptane and trivinylchlorosilane produce compounds which could be used as liquid crystalline substances and precursors for synthesis of higher order carbosilane dendrons.
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Affiliation(s)
- Barada Prasanna Dash
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115-2862, USA
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164
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Kassube J, Wadepohl H, Gade L. Synthesis of Peripherally Functionalised Dendritic Binaphthyl (BINAP)-Systems and their Application as Ligands in the Copper-Catalysed Hydrosilylation of Acetophenone. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200700586] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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165
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Feng CL, Zhong XH, Steinhart M, Caminade AM, Majoral JP, Knoll W. Functional quantum-dot/dendrimer nanotubes for sensitive detection of DNA hybridization. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2008; 4:566-571. [PMID: 18384038 DOI: 10.1002/smll.200700453] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Chuan Liang Feng
- Max Planck Institute for Polymer Research Ackermannweg 10, 55128 Mainz, Germany
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166
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Lang H, Lühmann B. Novel Carbosiloxane Dendrimers with End-Grafted Highly Functionalized Building Blocks. PHOSPHORUS SULFUR 2008. [DOI: 10.1080/10426500108546571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Heinrich Lang
- a Technische Universität Chemnitz, Fakultät für Naturwissenschaften , Institut für Chemie, Lehrstuhl für Anorganische Chemie , Strasse der Nationen 62, D-09111 Chemnitz, (Germany)
- b Technische Universität Chemnitz, Fakultät für Naturwissenschaften , Institut für Chemie, Lehrstuhl für Anorganische Chemie , Strasse der Nationen 62, D-09111 Chemnitz, (Germany)
| | - Bettina Lühmann
- a Technische Universität Chemnitz, Fakultät für Naturwissenschaften , Institut für Chemie, Lehrstuhl für Anorganische Chemie , Strasse der Nationen 62, D-09111 Chemnitz, (Germany)
- b Technische Universität Chemnitz, Fakultät für Naturwissenschaften , Institut für Chemie, Lehrstuhl für Anorganische Chemie , Strasse der Nationen 62, D-09111 Chemnitz, (Germany)
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167
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Dallas P, Bourlinos AB, Petridis D, Boukos N, Papadokostaki K, Niarchos D, Guskos N. Synthesis and characterization of 2-D and 3-D covalent networks derived from triazine central cores and bridging aromatic diamines. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.01.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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168
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Xu J, Ling TC, He C. Hydrogen bond-directed self-assembly of peripherally modified cyclotriphosphazenes with a homeotropic liquid crystalline phase. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22800] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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169
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Richards PI, Bickley JF, Boomishankar R, Steiner A. In situ recrystallisation of a coordination polymer with hemilabile linkers. Chem Commun (Camb) 2008:1656-8. [DOI: 10.1039/b718872b] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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170
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Newkome GR, Shreiner CD. Poly(amidoamine), polypropylenimine, and related dendrimers and dendrons possessing different 1→2 branching motifs: An overview of the divergent procedures. POLYMER 2008. [DOI: 10.1016/j.polymer.2007.10.021] [Citation(s) in RCA: 313] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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171
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Hydrosilylation Synthesis of New Ferrocenylene Copolymers Containing Carbosilylene, Carbosiloxy and Cyclopentadienyliron Dicarbonyl Bridges. J Inorg Organomet Polym Mater 2007. [DOI: 10.1007/s10904-007-9190-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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172
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173
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Beletskaya IP, Chuchurjukin AV. Synthesis and properties of functionalised dendrimers. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc2000v069n08abeh000577] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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174
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Franc G, Mazères S, Turrin CO, Vendier L, Duhayon C, Caminade AM, Majoral JP. Synthesis and properties of dendrimers possessing the same fluorophore(s) located either peripherally or off-center. J Org Chem 2007; 72:8707-15. [PMID: 17929976 DOI: 10.1021/jo701462f] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two series of phosphorus dendrimers functionalized by maleimide derivatives are synthesized, as well as three new monomeric maleimide derivatives, of which two are characterized by X-ray diffraction. The first series of phosphorus dendrimers possesses maleimide derivatives as end groups (6-48, from generation 0 to generation 3). The second series of dendrimers possesses a single copy of the same maleimide derivative linked "off-center" to a cyclotriphosphazene core, leading to dissymmetrical dendrimers; this series is synthesized from generation 0 to generation 2. The fluorescence properties of both series of dendrimers and of monomers are studied, affording new information. First, the presence of labile hydrogen extinguishes the fluorescence. Second, the grafting of the fluorophore(s) directly to the core affords highly fluorescent compounds. Finally, an original influence of the branches possessing phosphorhydrazone linkages toward the fluorescence properties is shown.
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Affiliation(s)
- Grégory Franc
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, 31077, Toulouse Cedex 4, France
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175
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DFT and TDDFT investigations on the ground and excited states for polynuclear platinum(II) complexes containing the rigid phenylacetylide ligand. ACTA ACUST UNITED AC 2007. [DOI: 10.1007/s11426-007-0090-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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176
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Smirnova NN, Stepanova OV, Bykova TA, Markin AV, Tatarinova EA, Muzafarov AM. Thermodynamic properties of carbosilane dendrimers of the seventh and ninth generations with terminal butyl groups in the temperature range from T → 0 to 600 K. Russ Chem Bull 2007. [DOI: 10.1007/s11172-007-0310-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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177
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Abstract
The design of well-defined particulate carrier systems with controlled size, shapes and physicochemical characteristics is becoming a focal point in the field of biomedicine and drug delivery. Dendrimers are one of the emerging technologies of recent times and have served as a unique platform to achieve the development as novel drug delivery scaffolds. Dendrimers may be engineered to meet the specific needs of biologically active agents, which can either be encapsulated within dendrimers or chemically attached to these units. The large number of active functional groups on the surface of dendrimers allows them to be meticulously tailored and to act as nano-scaffolds or nano-containers of various categories of drugs. The architecture of modified dendrimers has posed a challenge to drug delivery, in particular with respect to their in vivo metabolic fate. The drug delivery applications of dendrimers presented in this article provide an insight of their potential and substantiate the major roles for the future of these nanoconstructs.
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Affiliation(s)
- Narendra K Jain
- Dr Hari Singh Gour University, Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Sagar 4700 03, India.
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178
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Caminade AM, Servin P, Laurent R, Majoral JP. Dendrimeric phosphines in asymmetric catalysis. Chem Soc Rev 2007; 37:56-67. [PMID: 18197333 DOI: 10.1039/b606569b] [Citation(s) in RCA: 137] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dendrimers are hyperbranched nanosized and precisely defined molecules, attracting increasing attention each year due to their numerous properties in catalysis, materials science, and biology. This tutorial review concerns the use of dendrimers as catalysts and focuses more precisely on their properties as enantioselective catalysts. Emphasis is put on chiral phosphine complexes constituting the core or the end groups of various types of dendrimers. The effect of the location of the catalytic entities, the effect of the size (generation) and the nature of the dendritic skeleton on the enantiomeric excesses are discussed.
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Affiliation(s)
- Anne-Marie Caminade
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France.
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179
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Sanji T, Shiraishi K, Tanaka M. Synthesis and Photophysical Properties of Phosphole-Cored Dendrimers. Org Lett 2007; 9:3611-4. [PMID: 17685626 DOI: 10.1021/ol701606t] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Phosphole-cored dendrimers having poly(benzyl ether) units through the third generation have been synthesized. The dendrimers display intense blue photoluminescence, the quantum yield increasing with the increasing generation of the dendron units. The optical properties are easily tuned by oxidation of the phosphorus atom of the phosphole ring.
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Affiliation(s)
- Takanobu Sanji
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259-R1-13, Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
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180
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Feng X, Taton D, Chaikof EL, Gnanou Y. Bouquet-type Dendrimerlike Poly(ethylene Oxide)s with a Focal Aldehyde and Peripheral Hydroxyls. Biomacromolecules 2007; 8:2374-8. [PMID: 17630689 DOI: 10.1021/bm070146r] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Doubly functionalized dendrimerlike poly(ethylene oxide)s (PEOs) carrying 16 hydroxyl groups at their periphery and one aldehyde group at their focal point were synthesized up to the fourth generation through an iterative divergent approach. First, a protected aldehyde dihydroxyl compound, namely, 3,3-diethoxy-1,2-propanediol, was used as initiator for the anionic ring-opening polymerization (AROP) of ethylene oxide after partial deprotonation (30%) in dimethyl sulfoxide. The two hydroxyls carried by the PEO chain ends of the first generation were subsequently derivatized so as to generate four hydroxyls via a two-step reaction (allylation and osmylation). The next generations of such dendrimerlike PEOs were grown upon repeating the same cycle of AROP and chain-end modification. At the completion of these reactions, the acetal group present at the core was deprotected under acidic conditions to afford the targeted dendrimerlike PEO of fourth generation with a central aldehyde group. The reactivity and accessibility of the latter function was demonstrated upon its conjugation with aniline used as a model compound.
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Affiliation(s)
- Xiaoshuang Feng
- Laboratoire de Chimie des Polymères Organiques, Université Bordeaux-1-CNRS-ENSCPB, 16, Avenue Pey-Berland, 33607 Pessac Cedex, France
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181
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Aksu Y, Aksu S, Schumann H. Synthesis and characterization of α, ω-bis [tri - (w - triphenylstannyl) butylstannyl] alkanes as starting materials for organotin dendrimers. Appl Organomet Chem 2007. [DOI: 10.1002/aoc.1251] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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182
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Ouchi Y, Morisaki Y, Chujo Y. Synthesis of Optically Active Dendrimers Having Chiral Bisphosphine as a Core. Polym Bull (Berl) 2007. [DOI: 10.1007/s00289-007-0780-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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183
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Tolosa J, Romero-Nieto C, Díez-Barra E, Sánchez-Verdú P, Rodríguez-López J. Control of Surface Functionality in Poly(phenylenevinylene) Dendritic Architectures. J Org Chem 2007; 72:3847-52. [PMID: 17439284 DOI: 10.1021/jo070210v] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The efficient synthesis of new asymmetric poly(phenylenevinylene) dendritic macromolecules using a stepwise convergent-growth approach is described. By an iterative methodology that made use of the Horner-Wadsworth-Emmons (HWE) reaction, dendrons and dendrimers up to the third generation, with eight different functional groups located at the periphery, were prepared in good yields. Both the number and placement of functionalities can be accurately controlled to afford a large variety of dendritic architectures.
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Affiliation(s)
- Juan Tolosa
- Facultad de Química, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
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184
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Zamora M, Herrero S, Losada J, Cuadrado I, Casado CM, Alonso B. Synthesis and Electrochemistry of Octamethylferrocenyl-Functionalized Dendrimers. Organometallics 2007. [DOI: 10.1021/om070070f] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Magdalena Zamora
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049-Madrid, Spain, and Departamento de Ingeniería Química Industrial, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006-Madrid, Spain
| | - Santiago Herrero
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049-Madrid, Spain, and Departamento de Ingeniería Química Industrial, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006-Madrid, Spain
| | - José Losada
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049-Madrid, Spain, and Departamento de Ingeniería Química Industrial, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006-Madrid, Spain
| | - Isabel Cuadrado
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049-Madrid, Spain, and Departamento de Ingeniería Química Industrial, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006-Madrid, Spain
| | - Carmen M. Casado
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049-Madrid, Spain, and Departamento de Ingeniería Química Industrial, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006-Madrid, Spain
| | - Beatriz Alonso
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049-Madrid, Spain, and Departamento de Ingeniería Química Industrial, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006-Madrid, Spain
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185
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Predvoditelev DA, Strebkova EV, Malenkovskaya MA, Nifant’ev EE. Design of phosphorus-containing macrocycles on the basis of dipentaerythritol. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2007. [DOI: 10.1134/s1070428007040306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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186
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Theoretical investigation of 3,5-dihydroxybenzylalcohol based dendrimer generations 1–5 using Molecular Mechanics (MM+) method and the PM3 Semi-Empirical Molecular Orbital Theory. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.theochem.2006.12.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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187
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Marciniec B, Waehner J, Pawluc P, Kubicki M. Highly stereoselective synthesis and application of functionalized tetravinylcyclotetrasiloxanes via catalytic reactions. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.molcata.2006.09.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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188
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Routaboul L, Vincendeau S, Turrin CO, Caminade AM, Majoral JP, Daran JC, Manoury E. New phosphorus dendrimers with chiral ferrocenyl phosphine-thioether ligands on the periphery for asymmetric catalysis. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.10.065] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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189
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Bury I, Donnio B, Gallani JL, Guillon D. Interfacial behavior of a series of amphiphilic block co-dendrimers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:619-25. [PMID: 17209613 DOI: 10.1021/la062066z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Amphiphiles with a dendritic structure are attractive materials as they combine the features of dendrimers with the self-assembling properties and interfacial behavior of amphiphiles. We have designed and synthesized three series of segmented amphiphilic block co-dendrimers (Janus-type) and studied their interfacial properties on the Langmuir trough. Various behaviors are observed with, as a rule, the lowest generation dendrimers behaving more or less like traditional amphiphiles while the larger molecules tend to exhibit more complicated isotherms, with a non-straightforward temperature dependence, one particular molecule seemingly forming supramolecular assemblies spontaneously. The results presented here, obtained on a series of molecules where many parameters have been varied systematically, show the limits that should be kept in mind when designing amphiphilic dendrimers.
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Affiliation(s)
- Izabela Bury
- Institut de Physique et Chimie des Matériaux de Strasbourg, Groupe des Matériaux Organiques, UMR7504 (CNRS-Université Louis Pasteur), Strasbourg Cedex 2, France
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190
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191
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Ambade AV, Chen Y, Thayumanavan S. Controlled functional group presentations in dendrimers as a tool to probe the hyperbranched architecture. NEW J CHEM 2007. [DOI: 10.1039/b617628c] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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192
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Wang SJ, Fan XD, Liu X, Kong J, Liu YY, Wang X. Dendritic carbosilane-based macrophotoinitiator: synthesis, characterization, and photoinitiating behavior. POLYM INT 2007. [DOI: 10.1002/pi.2205] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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193
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Servin P, Rebout C, Laurent R, Peruzzini M, Caminade AM, Majoral JP. Reduced number of steps for the synthesis of dense and highly functionalized dendrimers. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.11.112] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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194
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Taton D, Feng X, Gnanou Y. Dendrimer-like polymers: a new class of structurally precise dendrimers with macromolecular generations. NEW J CHEM 2007. [DOI: 10.1039/b618544b] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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195
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Mongin O, Pla-Quintana A, Terenziani F, Drouin D, Le Droumaguet C, Caminade AM, Majoral JP, Blanchard-Desce M. Organic nanodots for multiphotonics: synthesis and photophysical studies. NEW J CHEM 2007. [DOI: 10.1039/b702452p] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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196
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Rodríguez LI, Rossell O, Seco M, Muller G. Rhodium or ruthenium units peripherally coordinated to carbosilane dendrimers functionalized with P-stereogenic monophosphines. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.10.035] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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197
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Roy AK. A Review of Recent Progress in Catalyzed Homogeneous Hydrosilation (Hydrosilylation). ADVANCES IN ORGANOMETALLIC CHEMISTRY 2007. [DOI: 10.1016/s0065-3055(07)55001-x] [Citation(s) in RCA: 166] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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198
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199
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Yoshioka H, Suzuki M, Mugisawa M, Naitoh N, Sawada H. Synthesis and applications of novel fluorinated dendrimer-type copolymers by the use of fluoroalkanoyl peroxide as a key intermediate. J Colloid Interface Sci 2006; 308:4-10. [PMID: 17239899 DOI: 10.1016/j.jcis.2006.12.046] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2006] [Revised: 12/13/2006] [Accepted: 12/14/2006] [Indexed: 11/17/2022]
Abstract
Fluoroalkanoyl peroxide reacted with 1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane (TTRV-Si) to afford fluoroalkyl end-capped oligomers containing some unreacted vinyl segments under very mild conditions. Fluoroalkyl end-capped cyclosiloxane oligomers containing some vinyl segments thus obtained reacted with N,N-dimethylacrylamide and fluoroalkanoyl peroxide to afford new fluorinated dendrimer-type block copolymers in good isolated yield. Similar reactions were also occurred by the use of 1,3,5-trivinyl-1,3,5-trimethylcyclotrisiloxane instead of TTRV-Si, and the corresponding fluorinated dendrimer-type block copolymer was obtained in good isolated yield. These fluorinated dendrimer-type block copolymers had an excellent solubility not only in water but also in traditional organic solvents including aliphatic fluorinated solvents. Interestingly, these fluorinated block copolymers were found to form the self-assembled dendrimer-type polymeric aggregates in aqueous solutions. More interestingly, these fluorinated block copolymers had an extremely higher dispersion ability of not only single-walled carbon nanotube and fullerenes but also magnetic nanoparticles into water, compared to that of the corresponding two fluoroalkyl end-capped oligomers.
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Affiliation(s)
- Hiroaki Yoshioka
- Department of Frontier Materials Chemistry, Faculty of Science and Technology, Hirosaki University, Bunkyo-cho, Hirosaki 036-8561, Japan
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200
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Schumann H, Aksu Y. Synthesis and Characterization of Silicon-Based Group 14 Dendrimers Si{(CH2)2Sn[(CH2)4MPh3]3}4 (M = Ge, Sn). Organometallics 2006. [DOI: 10.1021/om060853l] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Herbert Schumann
- Institut für Chemie der Technischen Universität Berlin, Strasse des 17. Juni 135, D-10623 Berlin, Germany
| | - Yilmaz Aksu
- Institut für Chemie der Technischen Universität Berlin, Strasse des 17. Juni 135, D-10623 Berlin, Germany
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