A Redox-Controllable Molecular Switch Based on Weak Recognition of BPX26C6 at a Diphenylurea Station

Abstract

The Na+ ion–assisted recognition of urea derivatives by BPX26C6 has allowed the construction of a redox-controllable [2]rotaxane-type molecular switch based on two originally very weakly interacting host/guest systems. Using NOBF4 to oxidize the triarylamine terminus into a corresponding radical cation attracted the macrocyclic component toward its adjacent carbamate station; subsequent addition of Zn powder moved the macrocyclic component back to its urea station.

Rotaxane nanomachines in future molecular electronics

“…125 characterization through NMR, UV-vis spectroscopies, etc. [52][53][54][55][56][57][58][59][60][61][62][63]65,[68][69][70][71][72]74,77,83,85,90,[92][93][94][96][97][98][102][103][104][105][109][110][111]113,115,118,120,126,131,136,142,143,150,151,[153][154][155][156][157]…”

“…Many research studies about [2]rotaxane and its applications to moletronics have been reported. 52–166…”