Fluorophore-Appendant 5,5′-Bicalixarene Scaffolds for Host-Guest Sensing of Nitric Oxide

Abhishek Baheti, Roman Dobrovetsky, Arkadi Vigalok*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Conjugated 5,5′-Bicalixarene scaffolds having fluorophores at the chain termini have been prepared and tested in the supramolecular detection of nitric oxide. Scaffolds bearing electron-rich fluorophores demonstrated a stronger turn-off response to the presence of NO than the fluorophore-free analogue in both organic and aqueous media, while no fluorescence quenching happened when the electron-deficient fluorophores were employed. Unprecedented ratiometric supramolecular sensing was observed when fluorophores of the opposite electronic demands were placed at the scaffold's termini.

Original languageEnglish
Pages (from-to)9706-9711
Number of pages6
JournalOrganic Letters
Issue number24
StatePublished - 18 Dec 2020


FundersFunder number
Israel Science Foundation696/16
PAZY Foundation5100011590


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