Abstract
A family of Newkome-type dendritic molecules bearing a disulfide anchor group, different peripheral groups (-COOtBu or - COOH) and sizes or generations (Gn=0-2) was synthesized and used as ligand for the synthesis of gold nanoparticle-cored dendrimers (NCDs). These hybrid materials were characterized by means of UV-vis spectroscopy, TEM, and IR and NMR spectroscopies, finding that the capping molecules of the organic shell determine the solubility and stability of the different NCDs, as well as the characteristics of the inorganic core through a dendritic control characteristic for Newkome-type ligands. Remarkably, a combination of detailed IR and NMR studies allows for studying the ligand-ligand and ligand-core interactions that take place in these materials. It is demonstrated that concepts, techniques and methods normally used in organic and dendritic chemistry, such as the synthesis of precisely controlled architectures and their rigorous spectroscopic characterization, can be efficiently applied to engineer novel organic-inorganic hybrid materials with enhanced properties.
Keywords: Dendritic control, IR spectroscopy, Nanoparticle-cored dendrimers, NMR spectroscopy, Organic-inorganic hybrid nanomaterials, Tailored properties.
Current Organic Chemistry
Title:Dendritic Chemistry Applied to the Construction of Tailored Functional Nanomaterials: Synthesis and Characterization of Gold Nanoparticle-Cored Dendrimers (NCDs)
Volume: 17 Issue: 9
Author(s): Julieta I. Paez, Veronica Brunetti, Eduardo A. Coronado and Miriam C. Strumia
Affiliation:
Keywords: Dendritic control, IR spectroscopy, Nanoparticle-cored dendrimers, NMR spectroscopy, Organic-inorganic hybrid nanomaterials, Tailored properties.
Abstract: A family of Newkome-type dendritic molecules bearing a disulfide anchor group, different peripheral groups (-COOtBu or - COOH) and sizes or generations (Gn=0-2) was synthesized and used as ligand for the synthesis of gold nanoparticle-cored dendrimers (NCDs). These hybrid materials were characterized by means of UV-vis spectroscopy, TEM, and IR and NMR spectroscopies, finding that the capping molecules of the organic shell determine the solubility and stability of the different NCDs, as well as the characteristics of the inorganic core through a dendritic control characteristic for Newkome-type ligands. Remarkably, a combination of detailed IR and NMR studies allows for studying the ligand-ligand and ligand-core interactions that take place in these materials. It is demonstrated that concepts, techniques and methods normally used in organic and dendritic chemistry, such as the synthesis of precisely controlled architectures and their rigorous spectroscopic characterization, can be efficiently applied to engineer novel organic-inorganic hybrid materials with enhanced properties.
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Cite this article as:
Paez Julieta I., Brunetti Veronica, Coronado Eduardo A. and Strumia Miriam C., Dendritic Chemistry Applied to the Construction of Tailored Functional Nanomaterials: Synthesis and Characterization of Gold Nanoparticle-Cored Dendrimers (NCDs), Current Organic Chemistry 2013; 17 (9) . https://dx.doi.org/10.2174/1385272811317090008
DOI https://dx.doi.org/10.2174/1385272811317090008 |
Print ISSN 1385-2728 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5348 |
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Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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