Design of a Peripheral Building Block for H-Bonded Dendritic Frameworks and Analysis of the Void Space in the Bulk Dendrimers.

ABSTRACT: Three dendrimers, (t-Bu-G ₂ N) ₂ , CC(t-Bu-G ₁ N) ₃ and (t-Bu-G ₁ N) ₂ , with 3,5-di-tert-butyl amidobenzene as a common peripheral moiety were prepared in 64-83% yields and characterized. The bulk solids had high BET surface areas of 136-138 m²/g, which were similar for the three dendrimers in spite of their different molecular weight (ranging from 1791 to 2890). It was concluded that the peripheral amide groups do not imbed in the interstitial space of neighbouring dendrimer molecules but rather build a supramolecular architecture through strong intermolecular H-bonds. This mode of assembly generates voids in the bulk dendrimers responsible for sorption properties. The X-ray crystal structure analysis of a compo

SUBMITTER: Lee CH 

PROVIDER: S-EPMC5473840 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature