The precise co-conformation regulation of topologically chiral [2]catenanes under two different external stimuli led to the construction a bidirectional circularly polarized luminescence (CPL) switch, as reported by Xiao He, Wei Wang and Hai-Bo Yang et al. in their Research Article (DOI: 10.1002/anie.202210542). results provide not only an attractive approach toward multistate CPL switches for ...

We describe the synthesis of a series of interlocked structures from porphyrin-glycoluril cage compounds and bis(olefin)-terminated viologens by an olefin-metathesis protocol. The length of the chain connecting the olefin substituents with the viologen has a marked effect on the products of the ring-closure reaction. Long chains give [2]- and [3]catenane structures, whereas short chains give a ...

Polyynes are alternations of single and triple bonds between carbon atoms, while cumulenes successions double bonds. Since the bond is strongest two recent preoccupations included synthesizing condensing cyclic polyynes their clusters. Density functional theory calculations predicted stable monocyclic rings formation for a number C atoms equal to or higher than 16. Alternative series Carbon Bor...