Sulfate anion templation of a neutral pseudorotaxane assembly using an indolocarbazole threading component

Abstract

The first example of anion templated pseudorotaxane formation between two neutral components in solution and in surface assembled monolayers is described.

Advances in Anion Supramolecular Chemistry: From Recognition to Chemical Applications

“…For example, an indolocarbazole may thread through an isophthalamide . macrocycle with either fluoride or sulfate ions acting as the template, [129] and catenanes have been prepared where two indolocarbazole units coordinate around a chloride ion ( Figure 42). [130] To date, the anion-templated synthesis of interlocked molecules has been dominated by the use of spherical halide (in particular chloride) templates.…”

Two new indole derivatives as anion receptors for detecting fluoride ion

“…One of the design strategies of fluoride receptors is based on the formation of a hydrogen bond between the fluoride ion and the active N-H group of an organic chromophore, which will result in a detectable change of spectral characteristicsof the chromophore upon the recognition of fluoride ion. Among the various organic chromophores investigated as fluoride receptors, indole-and carbazole-based chromogenicsensing molecules are superior hydrogen bond donors than pyrrole and more prone to deprotonation which has been well documented [24,25]. In our earlier works, we have designed and synthesized several colorimetric F À receptors with bi-indole and indolocarbazole as the recognition sites [26,27].…”

Acyclic indole and carbazole-based sulfate receptors

“…Crystals of the tetrabutylammonium sulfate complex of 40 receptor 1 were obtained by slow evaporation of a DMSO solution of the receptor in the presence of excess terabutylammonium sulfate. 17 The structure (Figure 3 …”