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@ARTICLE{Lenyk:888498,
author = {Lenyk, Bohdan and Schöps, Volker and Boneberg, Johannes
and Kabdulov, Mikhail and Huhn, Thomas and Scheer, Elke and
Offenhäusser, Andreas and Mayer, Dirk},
title = {{S}urface {P}lasmon-{E}nhanced {S}witching {K}inetics of
{M}olecular {P}hotochromic {F}ilms on {G}old {N}anohole
{A}rrays},
journal = {Nano letters},
volume = {20},
number = {7},
issn = {1530-6992},
address = {Washington, DC},
publisher = {ACS Publ.},
reportid = {FZJ-2020-04962},
pages = {5243 - 5250},
year = {2020},
note = {Kein Post-print vorhanden},
abstract = {Diarylethene molecules are discussed as possible optical
switches, which can reversibly transition between completely
conjugated (closed) and nonconjugated (open) forms with
different electrical conductance and optical absorbance, by
exposure to UV and visible light. However, in general the
opening reaction exhibits much lower quantum yield than the
closing process, hindering their usage in optoelectronic
devices. To enhance the opening process, which is supported
by visible light, we employ the plasmonic field enhancement
of gold films perforated with nanoholes. We show that gold
nanohole arrays reveal strong optical transmission in the
visible range $(∼60\%)$ and pronounced enhancement of
field intensities, resulting in around $50\%$ faster
switching kinetics of the molecular species in comparison
with quartz substrates. The experimental UV–vis
measurements are verified with finite-difference time-domain
simulation that confirm the obtained results. Thus, we
propose gold nanohole arrays as transparent and conductive
plasmonic material that accelerates visible-light-triggered
chemical reactions including molecular switching.},
cin = {IBI-3},
ddc = {660},
cid = {I:(DE-Juel1)IBI-3-20200312},
pnm = {5241 - Molecular Information Processing in Cellular Systems
(POF4-524)},
pid = {G:(DE-HGF)POF4-5241},
typ = {PUB:(DE-HGF)16},
pubmed = {32520573},
UT = {WOS:000548893200072},
doi = {10.1021/acs.nanolett.0c01569},
url = {https://juser.fz-juelich.de/record/888498},
}