Electrical detection of plasmon-induced isomerization in molecule–nanoparticle network devices. Issue 48 (4th December 2018)

• Record Type: Journal Article
• Authors: Stiévenard, Didier; Guérin, David; Lenfant, Stéphane; Lévêque, Gaëtan; Nijhuis, Christian A.; Vuillaume, Dominique
• Is Part Of: Nanoscale. Volume 10:Issue 48(2018)
• Page Start: 23122
• Page End: 23130
• Publication Date: 2018-12-04
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c8nr07603k
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : We demonstrate the electrical detection (conductance variation) of plasmon-induced isomerization of azobenzene derivatives in a network of molecularly linked gold nanoparticles. 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.