Reversible π-system switching of thiophene-fused thiahexaphyrins by solvent and oxidation/reduction.

ABSTRACT: The concept of chemical topology has generated considerable interest among chemists and one of the state-of-the-art topics is Möbius topology in cyclic π-conjugated molecules. In this regard, expanded porphyrins have been extensively studied because of their facile topological interconversions and attractive optoelectronic properties. A typical example involves [28]hexaphyrins: they show topological conversion between planar Hückel and twisted Möbius topologies owing to their flexible structure. With this in mind, we designed a [28]hexaphyrin where one dimethine pyrrole unit was replaced with dithieno[3,4-b:3',4'-d]thiophene (β-DTT), aiming at a reversible switching between macrocyclic and cross-conjugated π-systems by a change in molecular topologies. Considering that the β-

SUBMITTER: Higashino T 

PROVIDER: S-EPMC6179095 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature