Cyclic Ether Triggers for Polymeric Frustrated Lewis Pair Gels

Sterically hindered Lewis acid and base centers are unable to form Lewis adducts, instead forming frustrated Lewis pairs (FLPs), where latent reactivity can be utilized for the activation of small molecules. Applying FLP chemistry into polymeric frameworks transforms this chemistry into responsive a...

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Bibliographic Details
Published inJournal of the American Chemical Society Vol. 143; no. 33; pp. 12980 - 12984
Main Authors Yolsal, Utku, Horton, Thomas A. R, Wang, Meng, Shaver, Michael P
Format Journal Article
LanguageEnglish
Published WASHINGTON American Chemical Society 25.08.2021
Amer Chemical Soc
Subjects
Chemistry
Chemistry, Multidisciplinary
Communication
Physical Sciences
Science & Technology
HYDROBORATION
BORANE
PHOSPHINES
DIENE
BIS(PENTAFLUOROPHENYL)BORANE
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Summary:Sterically hindered Lewis acid and base centers are unable to form Lewis adducts, instead forming frustrated Lewis pairs (FLPs), where latent reactivity can be utilized for the activation of small molecules. Applying FLP chemistry into polymeric frameworks transforms this chemistry into responsive and functional materials. Here, we report a versatile synthesis strategy for the preparation of macromolecular FLPs and explore its potential with the ring-opening reactions of cyclic ethers. Addition of the cyclic substrates triggered polymer network formation, where the extent of cross-linking, strength of network, and reactivity are tuned by the steric and electronic properties of the ethers. The resultant networks behave like covalently cross-linked polymers, demonstrating the versatility of FLPs to simultaneously tune both small-molecule capture and mechanical properties of materials.
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ISSN:0002-7863
1520-5126
DOI:10.1021/jacs.1c06408