The First RuII Bipyridyl-Capped Cyclodextrin: Evidence of Electron-Transfer Through the Cavity

Diaminotrehalose‐capped β‐cyclodextrin, a new member of hemispherodextrins: Synthesis, thermodynamic and spectroscopic characterization and its exploitation in chiral electrokinetic chromatography

“…Also analogously to the cited references, it was chosen a pH value near to neutrality, in order to exploit the role of assistance of the inclusion interaction by the electrostatic attraction between an anionic analyte and a cationic selector. Experimental evidence of a better ability in the chiral separation of such a pH in comparison to an alkaline pH has been obtained in the separation of phenoxyacids by THCMH 8, and THAMH and THALAH 9. It appears a constant behaviour, also confirmed for completely different CD derivatives (see also 22 for a review).…”

Enabling Stereochemical Communication and Stimuli‐Responsive Chiroptical Properties in Biphenyl‐Capped Cyclodextrins

“…[27] Furthermore, the rigid biphenyl unit has a length that matches the diameter of α-or β-CD cavities, making it an ideal CD capping unit for efficient chirality transfer. [28][29][30] In this study, we demonstrate how the A and D glucose units of both A,D-difunctionalized permethylated α-and β-CDs can be effectively bridged with various 2,2'difunctionalized 1,1'-biphenyl derivatives. We also investigate how the stimuli-responsive chiroptical properties of the resulting capped CDs are highly dependent on the rigidity of the capping unit.…”

“…In this context, a macrocycle containing a stereolabile biphenyl moiety was recently shown to convert stereochemical information contained in a molecular tape into chiroptical read‐outs (Turing machine) [27] . Furthermore, the rigid biphenyl unit has a length that matches the diameter of α‐ or β‐CD cavities, making it an ideal CD capping unit for efficient chirality transfer [28–30] . In this study, we demonstrate how the A and D glucose units of both A,D‐difunctionalized permethylated α‐ and β‐CDs can be effectively bridged with various 2,2′‐difunctionalized 1,1′‐biphenyl derivatives.…”

Photo‐isomerization of the Cyanine Dye Alexa‐Fluor 647 (AF‐647) in the Context of dSTORM Super‐Resolution Microscopy

“…At saturation, the fluorescence quantum yield is predicted to fall to 0.11, which corresponds to a decrease of around 67 % from the initial value. The fit to the experimental data does not require an additional dynamic quenching process, such that the bimolecular quenching rate constant is <10 8 m −1 s −1 under these conditions. At low thiol concentrations, there was no obvious effect on the fluorescence lifetime but, in the presence of RSH (1.0 m ), the decay curves became notably bi‐exponential (Figure S37).…”