We describe a rotaxane molecular shuttle encompassing triazolium and tertiary ammonium units as weak recognition sites for the ring. Such a design, which differs from that of typical controllable rotaxanes, allows the precise tuning of the ring distribution among the two sites - i.e., the coconformational equilibrium - by changing the solvent polarity or the nature of the counteranions. Shuttling of the ring between the two stations can also be toggled by acid-base stimuli. Such an approach is paradigmatic to obtain rotaxanes that can sense environmental changes and transduce them into a coconformational response and opens avenues for novel applications in sensing and stimuli-responsive materials.
Controlling molecular shuttling in a rotaxane with weak ring recognition sites / Bukhtiiarova N.; Credi A.; Corra' S.. - In: CHEMICAL COMMUNICATIONS. - ISSN 1359-7345. - STAMPA. - 59:(2023), pp. 13159-13162. [10.1039/d3cc04483a]
Controlling molecular shuttling in a rotaxane with weak ring recognition sites
Bukhtiiarova N.Primo
;Credi A.
Penultimo
;Corra' S.
Ultimo
2023
Abstract
We describe a rotaxane molecular shuttle encompassing triazolium and tertiary ammonium units as weak recognition sites for the ring. Such a design, which differs from that of typical controllable rotaxanes, allows the precise tuning of the ring distribution among the two sites - i.e., the coconformational equilibrium - by changing the solvent polarity or the nature of the counteranions. Shuttling of the ring between the two stations can also be toggled by acid-base stimuli. Such an approach is paradigmatic to obtain rotaxanes that can sense environmental changes and transduce them into a coconformational response and opens avenues for novel applications in sensing and stimuli-responsive materials.File | Dimensione | Formato | |
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