biostudies-literature00390Murkli SUniversity of MarylandNational Science Foundation of Sri LankaNational Institute of General Medical SciencesNIGMS NIH HHSNational Science Foundation15249-15258https://www.ebi.ac.uk/biostudies/studies/S-EPMC7704778biostudies-literatureUnknown26(66)We report the linear extension from M1 to M2 to anthracene walled M3 which adopts a helical conformation (X-ray) to avoid unfavorable interactions between sidewalls. M3 is water soluble (=30 mm) and displays enhanced optical properties (ϵ=1.28×10⁵  m^-1  cm^-1 , λ_max =370 nm) relative to M2. The binding properties of M3 toward guests 1-29 were examined by ¹ H NMR and ITC. The M3⋅guest complexes are stronger than the analogous complexes of M2 and M1. The enhanced binding of M3 toward neuromuscular blockers 25, 27-29 suggests that M3 holds significant promise as an in vivo reversal agent. The changes in fluorescence observed for M3⋅guest complexes are a function of the relative orientation of the anthracene sidewalls, guest concentration, K_a , and guest electronics which rendered M3 a superb component of a fluorescence sensing array. The work establishes M3 as a next generation sequestering agent and a versatile component of fluorescence sensors.Chemistry (Weinheim an der Bergstrasse, Germany)Acyclic Cucurbit[n]uril-Type Receptors: Aromatic Wall Extension Enhances Binding Affinity, Delivers Helical Chirality, and Enables Fluorescence Sensing.PMC7704778P200A150033GM132345R01 GM132345CHE-1807486Murkli SZavalij PYIsaacs LKing DKlemm J39falseAcyclic Cucurbit[n]uril-Type Receptors: Aromatic Wall Extension Enhances Binding Affinity, Delivers Helical Chirality, and Enables Fluorescence Sensing.We report the linear extension from M1 to M2 to anthracene walled M3 which adopts a helical conformation (X-ray) to avoid unfavorable interactions between sidewalls. M3 is water soluble (=30 mm) and displays enhanced optical properties (ϵ=1.28×10⁵  m^-1  cm^-1 , λ_max =370 nm) relative to M2. The binding properties of M3 toward guests 1-29 were examined by ¹ H NMR and ITC. The M3⋅guest complexes are stronger than the analogous complexes of M2 and M1. The enhanced binding of M3 toward neuromuscular blockers 25, 27-29 suggests that M3 holds significant promise as an in vivo reversal agent. The changes in fluorescence observed for M3⋅guest complexes are a function of the relative orientation of the anthracene sidewalls, guest concentration, K_a , and guest electronics which rendered M3 a superb component of a fluorescence sensing array. The work establishes M3 as a next generation sequestering agent and a versatile component of fluorescence sensors.2020-01-01T00:00:00Z2020 Nov2024-02-15T06:46:47.624Z2022-02-11T13:09:01.313ZS-EPMC77047783265834210.1002/chem.202002874