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Title: Electrical detection of plasmon-induced isomerization in molecule–nanoparticle network devices
Authors: Didier Stiévenard
David Guérin
Stéphane Lenfant
Gaëtan Lévêque
Dominique Vuillaume
Issue Date: 9-Nov-2018
Publisher: Royal Society of Chemistry
Citation: Didier Stiévenard, David Guérin, Stéphane Lenfant, Gaëtan Lévêque, NIJHUIS,CHRISTIAN ALBERTUS, Dominique Vuillaume (2018-11-09). Electrical detection of plasmon-induced isomerization in molecule–nanoparticle network devices. Nanoscale 10 (48) : 23122–23130. ScholarBank@NUS Repository.
Abstract: We use a network of molecularly linked gold nanoparticles (NPSAN: nanoparticle self-assembled network) to demonstrate the electrical detection (conductance variation) of plasmon-induced isomerization (PII) of azobenzene derivatives (azobenzene bithiophene: AzBT). We show that PII is more efficient in a 3D-like NPSAN (cluster-NPSAN) than in a purely two-dimensional NPSAN (i.e., a monolayer of AzBT functionalized Au NPs). By comparison with the usual optical (UV-visible light) isomerization of AzBT, PII shows faster (a factor > ∼10) isomerization kinetics. Possible PII mechanisms are discussed: electric field-induced isomerization, two-phonon process, and plasmon-induced resonance energy transfer (PIRET), the latter being the most likely.
Source Title: Nanoscale
ISSN: 20403364
DOI: 10.1039/C8NR07603K
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