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Electrical detection of plasmon-induced isomerization in molecule-nanoparticle network devices.

Abstract

We use a network of molecularly linked gold nanoparticles (NPSAN: nanoparticle self-assembled network) to demonstrate the electrical detection (conductance variation) of a plasmon-induced isomerization (PII) of azobenzene derivatives (azobenzene bithiophene : AzBT). We show that PII is more efficient in a 3D-like (cluster-NPSAN) than in a purely two-dimensional NPSAN (i.e., a monolayer of AzBT functionalized Au NPs). By comparison with usual optical (UV-visible light) isomerization of AzBT, the PII show a faster (a factor > ∼ 10) isomerization kinetics. Possible PII mechanisms are discussed: electric field-induced isomerization, two-phonon process, plasmon-induced resonant energy transfer (PIRET), the latter being the most likely.

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Publication details

The article was received on 18 Sep 2018, accepted on 08 Nov 2018 and first published on 09 Nov 2018


Article type: Paper
DOI: 10.1039/C8NR07603K
Citation: Nanoscale, 2018, Accepted Manuscript
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    Electrical detection of plasmon-induced isomerization in molecule-nanoparticle network devices.

    D. Stievenard, D. Guérin, S. Lenfant, G. Lévêque, C. A. Nijhuis and D. Vuillaume, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR07603K

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