Bukhtiiarova Nina, Credi Alberto, Corra Stefano
CLAN-Center for Light Activated Nanostructures, Istituto per la Sintesi Organica e Fotoreattività, CNR area della ricerca Bologna, via Gobetti, 101, 40129, Bologna, Italy.
Dipartimento di Chimica Industriale "Toso-Montanari", Alma Mater Studiorum - Università di Bologna, viale del Risorgimento, 4, Bologna 40136, Italy.
Chem Commun (Camb). 2023 Nov 2;59(88):13159-13162. doi: 10.1039/d3cc04483a.
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 - , 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.
我们描述了一种包含三唑鎓和叔铵单元的轮烷分子梭，它们作为环的弱识别位点。这种设计与典型的可控轮烷不同，通过改变溶剂极性或抗衡阴离子的性质，可以精确调节环在两个位点之间的分布——共构象平衡。环在两个位点之间的穿梭也可以通过酸碱刺激来切换。这种方法是获得能够感知环境变化并将其转化为共构象响应的轮烷的范例，并为传感和刺激响应材料的新应用开辟了道路。
