Assembling of dense fluorescent supramolecular webs via self-propelled star-shaped aggregates

Nano Letters
Kirsten L GensonVladimir V Tsukruk

Abstract

We report a novel mechanism of assembly of dendronized rod molecules into a dense supramolecular fluorescencent web featuring self-propelled mechanistic inward motion of star-shaped aggregates within a solution droplet. We suggest that such a motion (observed in real time) is caused by the self-repulsion of the growing star-shaped nuclei from the liquid-solid-air interface in the course of one-dimensional growth of the anchored arms. An intriguing mechanism discovered here involves microscopic (hundred micrometers) directional motion of the microscopic aggregates driven by one-dimensional molecular assembly, which opens a new venue for guided assembly of dense mesoscopic supramolecular webs. Such assemblies can serve as interesting microfluidic networks, a web of optical switches, and model systems for studying intercellular communication.

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Citations

Oct 7, 2014·Chemistry : a European Journal·Fátima AparicioLuis Sánchez
May 19, 2009·Chemistry, an Asian Journal·P PramodManapurathu V George
Mar 4, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Libin LiuMyongsoo Lee
May 1, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Ray GunawidjajaVladimir V Tsukruk
May 18, 2007·Journal of the American Chemical Society·Yanke CheLing Zang
Dec 13, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Ji-Woong Park, Yo-Han Cho

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