Supramolecular Electropolymerization

Abstract

Gaining control over supramolecular polymerization mechanisms is of high fundamental interest to understand self-assembly and self-organization processes at the nanoscale.Itisalso expected to significantly impact the design and improve the efficiency of advanced materials and devices. Up to now, supramolecular polymerization has been shown to take place from unimers in solution, mainly by variations of temperature or of concentration. Reported here is that supramolecular nucleation-growth of triarylamine monomers can be triggered by electrochemistry in various solvents.T he involved mechanism offers new opportunities to precisely address in space and time the nucleation of supramolecular polymers at an electrode.T oi llustrate the potential of this methodology,s upramolecular nanowires are grown an oriented over several tens of micrometers between different types of commercially available electrodes submitted to asingle DC electric field, reaching ap recision unprecedented in the literature.

Temperature Control of Sequential Nucleation–Growth Mechanisms in Hierarchical Supramolecular Polymers

“…They were recently shown to present helical stacked structures with a possible hierarchical bundling of their primary fibrils up to the formation of organogels . From a functional point of view, this new family of supramolecular polymers presents unusual electronic, photonic, and plasmonic properties . In addition, TATA‐based supramolecular polymers display high cooperativity in the expression of their chirality at the level of the single fibrils.…”

Unsymmetric Bistable [c2]Daisy Chain Rotaxanes which Combine Two Types of Electroactive Stoppers

“…In this paper, we describe the syntheses and the pH‐controlled contraction/extension of unsymmetric [ c 2]daisy chain rotaxanes with two different electroactive stoppers – an electron donor (Figure , blue) and an electron acceptor (red). The donor stoppers consist of triarylamine units (TAAs), and the acceptor stoppers of unsymmetrical 1,7‐dipyrrolidinyl‐substituted perylene diimides (PDIs) . This interlocked structure presents two molecular stations – an ammonium group (orange in Figure ) and a triazolium group (purple in Figure ) – with different affinities for the macrocycle.…”

Recent Advances on Stimuli‐Responsive Smart Materials and their Applications

“…Furthermore, CV performed on TAA depict two oxidations at half wave potentials of −71 mV and 704 mV owing to TAA .+ and TAA 2+ . The SEM and TEM images of TAA/TAA .+ suggest the disordered network in TAA further leads to formation of stacks of triarylamine nanowires via uniform alignment of fibres towards the electric field through several supramolecular interactions (Figure ) . On the other hand, metal‐polypyridyl complexes (MA1‐4, Fe/Ru and Fe/Fe complexes) with Pd (II) salt as ligand consisting of one/two metals −Fe, Ru, Os, Co displayed electrochromism highlighted.…”