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

Source: [Electrical detection of plasmon-induced isomerization in molecule-nanoparticle network devices](<https://www.sota2.com/research/paper/68fa38e71e209131ce8be2d4>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T23:12:46.414Z

Authors: Didier Stievenard, David Guerin, Stephane Lenfant, Gaetan L\\'ev\\^eque, Christian A. Nijhuis, Dominique Vuillaume

Published: 2018-12-13T08:09:07.000Z

## Abstract

We use a network of molecularly linked gold nanoparticles (NPSAN: nanoparticles 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 shows a faster (a factor about 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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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1812.05307>)

[PDF](<https://arxiv.org/pdf/1812.05307.pdf>)