Electrical detection of plasmon-induced isomerization in molecule-nanoparticle network devices
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.
Keywords
Cite
@article{arxiv.1812.05307,
title = {Electrical detection of plasmon-induced isomerization in molecule-nanoparticle network devices},
author = {Didier Stievenard and David Guerin and Stephane Lenfant and Gaetan Lévêque and Christian A. Nijhuis and Dominique Vuillaume},
journal= {arXiv preprint arXiv:1812.05307},
year = {2018}
}
Comments
Final manuscript with supporting information