Direct 129 Xe-NMR spectroscopy evidence of a mesogenic dendrimer with free void space

A dendrimer with three-fold symmetry and piperazinoamido moieties was prepared in ∼35% yield. This molecule was observed to exhibit columnar phases on thermal treatment and have free void space in the mesogenic and solid states based on a 129 Xe-NMR study. The piperazinoamido moiety was indicated in...

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Published inJournal of materials chemistry. C, Materials for optical and electronic devices Vol. 11; no. 11; pp. 3710 - 3714
Main Authors Lu, Yao-Chih, Anedda, Roberto, Chen, Hsiu-Hui, Hsu, Hui-Chu, Hsu, Shun-Ju, Ratcliffe, Christopher, Lai, Long-Li, Ripmeester, John, Hsu, Hsiu-Fu
Format Journal Article
LanguageEnglish
Published 16.03.2023
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Summary:A dendrimer with three-fold symmetry and piperazinoamido moieties was prepared in ∼35% yield. This molecule was observed to exhibit columnar phases on thermal treatment and have free void space in the mesogenic and solid states based on a 129 Xe-NMR study. The piperazinoamido moiety was indicated in a theoretical calculation to cause the dendritic framework to become twisted between the central core and periphery—thus resulting in the dendrimer forming a free void space inside the framework after having self-assembled into columnar stacks.
ISSN:2050-7526
2050-7534
DOI:10.1039/D3TC00486D