Light-controlled morphologies of self-assembled triarylamine-fullerene conjugates

ACS Nano
Eric BusseronNicolas Giuseppone

Abstract

A family of triarylamine-fullerene conjugates has been synthesized and shown to self-assemble upon light stimulation in chlorinated solvents. This light-induced process primarily involves excitation of triarylamine derivatives, which then oxidize and stack with their neutral counterparts to form charge transfer complexes in the form of p-conducting channels, while fullerenes are consequently enforced in coaxial n-conducting columnar arrangements. These supramolecular heterojunctions can be organized over very long distances in micrometric fibers when a controlled amount of photons is provided from a white light source to initiate the process. Surprisingly, when sunlight or UV light is used instead, the nanostructuration leads to monodisperse spherical objects due to the nature of the nucleation-growth process involved in the stacks formation. This control over the supramolecular morphology of organic self-assemblies using the nature of light is of general interest for the design of functional responsive materials.

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Citations

Nov 21, 2015·Nature Communications·Mitsuaki YamauchiShiki Yagai
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Aug 23, 2019·Chemistry : a European Journal·Ting LiangEmilie Moulin
Apr 10, 2021·Journal of the American Chemical Society·Flavio PiciniNicolas Giuseppone
Mar 28, 2019·Accounts of Chemical Research·Emilie MoulinNicolas Giuseppone

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