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Issue 14, 2019
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Excitonic channels from bio-inspired templated supramolecular assembly of J-aggregate nanowires

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Abstract

Supramolecular assemblies with controlled morphology are of paramount importance for energy transport in organic semiconductors. Despite considerable freedom in molecular design, the preparation of dyes that form one dimensional J-aggregates is challenging. Here, we demonstrate a simple and effective route to functionalize dendronized polymers (DPs) with J-aggregates to construct tubular DP/J-aggregate nanowires. When J-aggregates are adsorbed onto DPs anchored to glass substrates, they assemble into microcrystalline domains typical for J-aggregates adsorbed on functionalized surfaces. Differently, the complexation between the dendronized polymer and J-aggregates in solution leads to dense packing of J-aggregate strands on the periphery of the DPs. Using a layer-by-layer (LBL) technique, DPs loaded with J-aggregates can also be adsorbed onto a DP monolayer. In this case, the thin film absorption spectra are narrower and indicate higher ratios of J-aggregate to monomer and dimer absorption than bare J-aggregates deposited similarly. The demonstration of J-aggregate adsorption on filamentous polymeric templates is a promising step toward artificial 1D light harvesting antennas, with potential applications in opto-electronic devices.

Graphical abstract: Excitonic channels from bio-inspired templated supramolecular assembly of J-aggregate nanowires

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Supplementary files

Article information


Submitted
22 Dec 2018
Accepted
18 Mar 2019
First published
19 Mar 2019

Nanoscale, 2019,11, 6929-6938
Article type
Paper

Excitonic channels from bio-inspired templated supramolecular assembly of J-aggregate nanowires

S. B. Anantharaman, D. Messmer, A. Sadeghpour, S. Salentinig, F. Nüesch and J. Heier, Nanoscale, 2019, 11, 6929
DOI: 10.1039/C8NR10357G

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