Triple Stack of a Viologen Derivative in a CB[10] Pair
Fengbo Liu, Shagor Chowdhury, Roselyne Rosas, Valérie Monnier, Laurence Charles, Hakim Karoui, Didier Gigmès, Olivier Ouari, Floris Chevallier, Christophe Bucher, Anthony Kermagoret, Simin Liu, David Bardelang
Abstract
A viologen–phenylene–imidazole (VPI) conjugate, previously shown to be singly complexed by CB[7] and doubly bound by CB[8], is herein shown to form antiparallel triple stacks in water with cucurbit[10]uril (CB[10]), pairwise complexing the guest trimer. The quinary host:guest 2:3 complex showed features assignable to charge-transfer interactions. Under reductive conditions, CB[10] could solubilize a VPI radical, even though CB[10] and reduced VPI are almost insoluble, thereby illustrating a possible new application for CB[10].
Topics & Concepts
ChemistryViologenStack (abstract data type)Derivative (finance)Combinatorial chemistryTriple bondStereochemistryPhotochemistryOrganic chemistryComputer scienceOperating systemBusinessDouble bondFinanceSupramolecular Chemistry and ComplexesCrystallography and molecular interactionsAdvanced NMR Techniques and Applications