Supramolecular Chemistry of Dendrimers

Zimmerman, Steven C.; Lawless, Laurence J.

doi:10.1007/3-540-45003-3_3

Cited by 163 publications

(86 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…2) for the assembly. The topic of selfassembly of dendrimers has been thoroughly reviewed (11,(17)(18)(19)(20)(21)(22)(23)(24).…”

Section: Supramolecular Assembly Of Dendrimersmentioning

confidence: 99%

“…Both the redox potential and the accessibility of the porphyrin cores are greatly affected by their environment and the characteristics and size of the encapsulating layer. In other systems, encapsulation of photoactive units in dendritic shells leads to enhanced luminescence behavior and reduced self-quenching (6,18,22,31,47).…”

Section: Site Isolation and Dendritic Encapsulationmentioning

confidence: 99%

See 1 more Smart Citation

Dendrimers and supramolecular chemistry

Fréchet

2002

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

329

176

View full text Add to dashboard Cite

“…2) for the assembly. The topic of selfassembly of dendrimers has been thoroughly reviewed (11,(17)(18)(19)(20)(21)(22)(23)(24).…”

Section: Supramolecular Assembly Of Dendrimersmentioning

confidence: 99%

Section: Site Isolation and Dendritic Encapsulationmentioning

confidence: 99%

Dendrimers and supramolecular chemistry

Fréchet

2002

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

329

176

View full text Add to dashboard Cite

“…Highly branched macromolecular structures such as dendrimers 1 and hyperbranched polymers 2 have gained considerable attention for their potential in applications such as drug delivery, 3 molecular recognition, 4 catalysis, 5 and organic electronic devices. 6 To expand the repertoire of highly branched systems with varying functionalities, new monomers need to be synthesized and analyzed.…”

Section: Introductionmentioning

confidence: 99%

“…Condensation of 3,5-diaminobenzoic acid (24) with two equivalents of 4-carboxybenzaldehyde 26 was followed by an in situ reduction of the resulting imine intermediate with NaBH 4 . After acidification with 2N HCl, 6 was isolated in 86% yield by filtration with no additional purification required.…”

mentioning

confidence: 99%

Synthesis of novel AB2 monomers for the construction of highly branched macromolecular architectures

Triano¹,

Tracey²,

Pomarico³

et al. 2015

Arkivoc

View full text Add to dashboard Cite

A series of novel, structurally related AB 2 monomers was synthesized and incorporated into branched materials. Size exclusion chromatography was used to compare these systems based on their relative hydrodynamic volumes. The results of these studies indicated an increased hydrodynamic volume of bis-benzyl amine based AB 2 monomer relative to analogous bis-benzyl ether structures. In order to further explore the bis-benzyl amine AB 2 structural motif, additional monomers were synthesized, leading to new branched materials and hyperbranched polymer structures.

show abstract

“…Herein, we report the effect that the density of functional groups within polymeric nanotubes could have upon complementary analyte molecules that pass through membrane nanopores. Since dendrimers are known as a class of artificial macromolecules that can have a high density of functional groups with a significant degree of control, [16][17][18][19][20] we hypothesized that these molecules are ideal candidates for this study. Even though dendrimer-based "testtube-like" nanostructures, where one end of the tube is closed, have been obtained using alumina membranes, the possibility of molecular recognition within such nanotubes has not been investigated.…”

mentioning

confidence: 99%

Functional Group Density and Recognition in Polymer Nanotubes

et al. 2008

View full text Add to dashboard Cite

Control of the placement of functional groups within confined nanospaces is of interest because of its potential in applications such as sensing and separations. [1][2][3][4][5][6][7][8][9][10][11][12] For effective recognition of analytes within nanopores, it is necessary that control over two factors-pore size and functional group presentation-be achieved. While pore-size changes in nanopores and their effects upon recognition have been reported, [2,[13][14][15] it is also important to investigate the relative effect of binding-site density upon molecular recognition inside these nanopores. Herein, we report the effect that the density of functional groups within polymeric nanotubes could have upon complementary analyte molecules that pass through membrane nanopores. Since dendrimers are known as a class of artificial macromolecules that can have a high density of functional groups with a significant degree of control, [16][17][18][19][20] we hypothesized that these molecules are ideal candidates for this study. Even though dendrimer-based "testtube-like" nanostructures, where one end of the tube is closed, have been obtained using alumina membranes, the possibility of molecular recognition within such nanotubes has not been investigated. [21,22] Recently, we described a very simple and versatile methodology by which polymer-based functionalities can be incorporated inside nanoporous polycarbonate membranes by using polyvalent interactions.[23] We have utilized this methodology to achieve the formation of dendrimer-functionalized nanotubes.Since polypropyleneimine (PPI) dendrimers [24] are easily accessible, water-soluble, and charged, we used these molecules to test our hypotheses (Scheme 1). Our methodology for functionalization of the membrane nanopores uses electrostatic interactions and the PPI dendrimers are positively charged. Therefore, it is necessary that the predendrimerfunctionalized membrane nanopores be negatively charged. To achieve this, we first incorporated Sn 2+ ions into the pore walls of the membrane by using its poly(vinylpyrrolidone) functionalities. The Sn 2+ ions were used to introduce a layer of an anionic polymer, polyacrylic acid (PAA). We have shown that the vacuum-filtration-based incorporation of polymers is uniform throughout the membrane.[23] This anionic polymerfunctionalized membrane interior was then utilized to incorporate the cationic PPI dendrimers. The schematic illustration of membrane functionalization using PPI dendrimers is shown in Figure 1.Prior to investigating how this functionalization effected recognition of the analytes that passed through the membrane, we needed to characterize the nanotubes formed in this process. We were first interested in assessing the change in pore size of the membranes upon dendrimer functionalization. While we were able to previously demonstrate drastic pore-size changes by using our self-assembling polymers, systematic control over the size of the final nanopores was not demonstrated. [23] We envisaged that dendrimers would provide a ...

show abstract

Supramolecular Chemistry of Dendrimers

Cited by 163 publications

References 77 publications

Dendrimers and supramolecular chemistry

Dendrimers and supramolecular chemistry

Synthesis of novel AB2 monomers for the construction of highly branched macromolecular architectures

Functional Group Density and Recognition in Polymer Nanotubes

Contact Info

Product

Resources

About