Fluorous 'ponytails' lead to strong gelators showing thermally induced structure evolution.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 26364926.
- Also identified by DOI 10.1039/c5sm01865j.
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Abstract
Appending perfluoroalkyl substituents to bis(urea) gelators results in significantly decreased inter-chain interactions with markedly thinner fibres and hence more cross-linked and more transparent gels with potential applications in the crystallisation of fluorinated pharmaceuticals. Gel structure has been probed by detailed SANS measurements which indicate a surprising structure evolution on thermal cycling, not seen for hydrocarbon analogues. The SANS data are complemented by the single crystal X-ray structure of one fluorinated gelator.
Medical subject headings
- Fluorocarbons
- Gels
- Urea