The Dendritic Box: Shape-Selective Liberation of Encapsulated Guests

Jansen, J. F. G. A.; Meijer, E. W.; Berg, E. M. M. Van Den

doi:10.1021/ja00120a032

Cited by 495 publications

(292 citation statements)

References 2 publications

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“…Most dendrimers are flexible enough to accommodate inclusion guests-indeed solvent molecules are generally thought to freely penetrate dendrimers-but they are also capable of rearranging themselves with significant volume collapse when solvent is removed. This collapse may leave guest molecules trapped inside the dendrimer, especially if favorable interactions exist, as in some ''dendritic micelles'' (37-41), or if the dendrimer structure has been rigidified to prevent their escape as in the ''dendritic box'' of Meijer and coworkers (42,43).…”

Section: Perspectivementioning

confidence: 99%

Dendrimers and supramolecular chemistry

Fréchet

2002

Proc. Natl. Acad. Sci. U.S.A.

329

176

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Section: Perspectivementioning

confidence: 99%

Dendrimers and supramolecular chemistry

Fréchet

2002

Proc. Natl. Acad. Sci. U.S.A.

329

176

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“…Due to the free-void volume located within the interior structure of the dendrimer, it can encapsulate guest molecules in its macromolecular interior, thus coating the nanoparticles and potentially preventing them from further oxidation and aggregation [22,23]. Moreover, it has been reported that the size of Ni nanoparticles formed through dendrimer templating depends on the metal-to-dendrimer ratio and generation of the dendrimer [24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Applications of Dendrimer-Encapsulated Zero-Valent Ni Nanoparticles as Antimicrobial Agents

et al. 2013

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Dendrimers have emerged as one of the most promising, cost-effective synthesizing methodologies in which highly monodispersed metallic nanoparticles can be produced with varied chemical functionalities. In this report, we have investigated the synthesis and application of as-synthesized dendrimer-encapsulated zero-valent nickel "Ni(0)" nanoparticles (NPs), using a fourth generation (G4) NH 2 -terminated poly(amido)amine (PAMAM) dendrimer as the host template, as potential antimicrobial agents. Apparently, based on ultraviolet visible spectroscopy (UV-vis) and transmission electron microscopy (TEM) analyses, Ni(0) NPs with an average measured size less than 10 nm in diameter were formed within the interior void cavity of the dendrimer structure. X-ray diffraction (XRD) analysis indicates that the NPs exhibited a single-phased, face-centered-cubic (fcc) crystallographic structure. Furthermore, to evaluate the antimicrobial activity of the dendrimer-encapsulated Ni(0) NPs, disk diffusion assay and minimum inhibitory concentration (MIC) examinations, both antimicrobial tests, were conducted. Subsequently, UV-vis analyses, after exposure of the dendrimer-encapsulated Ni(0) NPs to both Gram-negative and Gram-positive bacteria, revealed that the dendrimer-encapsulated particles prevented the growth of bacteria during the culturing stage.

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“…A variety of end-group modifications are reported [24]. For the present hyper-Rayleigh scattering study, we have modified the poly(propylene imine) dendrimers with 4-dimethylaminophenylcarboxamide end-groups to yield DAB-…”

Section: Synthesis and Characterizationmentioning

confidence: 99%