A bistable [2]pseudorotaxane 1⊂CBPQT•4PF6 and a bistable [2]rotaxane 2•4PF6 have been synthesised to measure the height of an electrostatic barrier produced by double molecular oxidation (0 to +2). Both systems...
The unique redox properties of monopyrrolotetrathiafulvalene can be used to induce directional movement in interlocked molecules. In this study, the kinetics for the directional movement of cyclobis(paraquat-p-phenylene) across the dioxidised...
The use of redox-responsive compounds has received a lot of research attention in the field of molecular nanotechnology. Tetrathiafulvalene (TTF) is one of the key redox units that has been used to construct redox-active materials. A wide variety of TTF derivatives has been reported including the monopyrroloTTF (MPTTF) and the bispyrroloTTF (BPTTF) derivatives. However, the use of BPTTF as a building block is still limited, despite several favorable properties of its highly π-extended structure. Herein, the synthesis and functionalization of two novel non-symmetric BPTTF building blocks are reported. The key intermediates in these new synthetic protocols are 4,6-dimethyl-5-tosyl-5H-[1,3]dithiolo[4,5-c]pyrrole-2-thione and 5-(4-iodophenyl)-4,6-dimethyl-[1,3]dithiolo[4,5-c]pyrrole-2-thione, which can be obtained in moderate to high yields in a two- or three-step synthetic procedure from 2,5-dimethyl-3,4-dithiocyanato-1-tosyl-1H-pyrrole and 1-(4-iodophenyl)-2,5-dimethyl-1H-pyrrole, respectively.
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