With amazing optical and electrochemical properties, the benzothioxanthene imide, a sulfur containing rylene, has only recently been demonstrated as promising building block for organic electronics. As a result, the seminal...
Two push-pull molecules involving a triarylamine donor unit connected to a dicyanovinyl acceptor moiety by a difluorobenzothiadiazole-thienyl block have been synthesized. In order to simplify the synthesis, avoid intermediate halogenation...
This study reports the synthesis and solution self-assembly of a bis(urea) derivative decorated with a poly(ethylene oxide) chain and an electroactive tetrathiafulvalene (TTF) unit, into oxidationsensitive supramolecular nanocylinders. As evidenced by cryo-transmission electron microscopy and light scattering experiments, the preparation pathway has a strong influence on the morphology and characteristics of the self-assembled structures, proving their frozen (out-of-2 equilibrium) nature. The targeted supramolecular nanocylinders could be obtained both in aqueous medium and acetonitrile. In water, TTF can be chemically oxidized to TTF •+ by Fe(III), resulting in a very moderate disassembly of the supramolecular nanocylinders. On the contrary, TTF can be oxidized up to TTF 2+ with the same oxidant in acetonitrile, leading to an almost complete disassembly of the nanocylinders. Oxidation of TTF eventually leads to its degradation in both solvents, even in the absence of oxygen and light. This paper shows that oxidation-sensitive supramolecular nanocylinders can be prepared in acetonitrile by combining bis(urea) and TTF units to a polymer.
Produced at ton scale, vat dyes are major environmental pollutants generated by the textile industry. However, they represent ideal and accessible candidates for chemical upcycling since they are usually composed of large πconjugated scaffolds. Based on the valorization of "old" products, waste or even contaminant into high-added value goods, this concept can be easily transposed to the laboratories. As a contribution to the current environmental and ecological transition, we demonstrate herein the valorization/upcycling of wastewaters generated during the dyeing procedure. To do so, the reduced (leuco) form of vat violet 10, also known as isoviolanthrone, was functionalized to afford a readily soluble derivative that was subsequently and successfully used as active material in operating solution processed light-emitting electrochemical cells, that is, from textile dyeing to high-tech application.
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