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Issue 18, 2020
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Microfluidic out-of-equilibrium control of molecular nanotubes

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Abstract

The bottom-up fabrication of functional nanosystems for light-harvesting applications and excitonic devices often relies on molecular self-assembly. Gaining access to the intermediate species involved in self-assembly would provide valuable insights into the pathways via which the final architecture has evolved, yet difficult to achieve due to their intrinsically short-lived nature. Here, we employ a lab-on-a-chip approach as a means to obtain in situ control of the structural complexity of an artificial light-harvesting complex: molecular double-walled nanotubes. Rapid and stable dissolution of the outer wall was realized via microfluidic mixing thereby rendering the thermodynamically unstable inner tubes accessible to spectroscopy. By measurement of the linear dichroism and time-resolved photoluminescence of both double-walled nanotubes and isolated inner tubes we show that the optical (excitonic) properties of the inner tube are remarkably robust to such drastic perturbation of the system's supramolecular structure as removal of the outer wall. The developed platform is readily extendable to a broad range of practical applications such as e.g. self-assembling systems and molecular photonics devices.

Graphical abstract: Microfluidic out-of-equilibrium control of molecular nanotubes

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Supplementary files

Article information


Submitted
31 Mar 2020
Accepted
21 Apr 2020
First published
21 Apr 2020

This article is Open Access

Phys. Chem. Chem. Phys., 2020,22, 10179-10188
Article type
Paper

Microfluidic out-of-equilibrium control of molecular nanotubes

B. Kriete, C. J. Feenstra and M. S. Pshenichnikov, Phys. Chem. Chem. Phys., 2020, 22, 10179
DOI: 10.1039/D0CP01734E

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    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
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    [Original citation] - Published by The Royal Society of Chemistry.

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