A tristable [2]pseudo[2]rotaxane.
A strategy towards increasing the lifetime of the metastable state of a [2]rotaxane incorporating tetrathiafulvalene, 1,5-dioxynaphthalene and bipyridinium (BIPY(2+)) is presented. Incorporation of BIPY(2+) served multiple roles as an electrostatic barrier to relaxation, a supramolecular recognition site for bis-1,5-dioxynaphthalene[38]crown-10 macrocycle, and upon reduction a recognition site for the mechanically bonded cyclobis(paraquat-p-phenylene) ring.
Trabolsi
Ali
A
Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60202, USA.
Fahrenbach
Albert C
AC
Dey
Sanjeev K
SK
Share
Andrew I
AI
Friedman
Douglas C
DC
Basu
Subhadeep
S
Gasa
Travis B
TB
Khashab
Niveen M
NM
Saha
Sourav
S
Aprahamian
Ivan
I
Khatib
Hussam A
HA
Flood
Amar H
AH
Stoddart
J Fraser
JF