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A Molecular Chameleon: Chromophoric Sensing by a Self-Complexing Molecular Assembly

Reinhard Wolf¹, Masumi Asakawa¹, Peter R Ashton¹

¹School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT (UK).

Angewandte Chemie (International Ed. in English)

|May 2, 2018

Abstract:

A color change from purple to green takes place on addition of tetrathiafulvalene (TTF) to the macrobicyclic receptor 1⁴⁺ , which is composed of a cyclobis(paraquat-p-phenylene) tetracation that shares one of its paraphenylene rings with a 1,5-naphthoparaphenylene-[36]crown-10 macrocycle. The TTF molecule forces the macrobicycle to turn inside out (see schematic drawing below) and displaces the self-complexed 1,5-dioxynaphthalene ring system from the center of the tetracationic cyclophane.

Keywords:

Chromophores Molecular devices Nanostructures Receptors Supramolecular chemistry

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