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@ARTICLE{Zhang:858551,
author = {Zhang, Pengcheng and Lyu, Zhaozi and Viktorova, Jekaterina
and Offenhäusser, Andreas and Feng, Lingyan and Mayer,
Dirk},
title = {{N}anoparticle stripe sensor for highly sensitive and
selective detection of mercury ions},
journal = {Biosensors and bioelectronics},
volume = {117},
issn = {0956-5663},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2018-07421},
pages = {450 - 456},
year = {2018},
abstract = {Mercury and its compounds are emitted during industrial
processes and are extremely harmful for eco systems and
human health. Therefore, the detection of mercury ions
(Hg2+) in our living and working environment is of great
importance for the society and especially for the health of
human beings. Here we demonstrate a proof of concept
nanoparticle stripe sensor for highly sensitive and
selective detection of Hg2+. This sensor is based on the
changes of the charge transport between the neighboring
nanoparticles in the nanoparticle stripe. The addition of
Hg2+ induces a chelation between Hg2+ and carboxylic groups
on the surface modification molecules and thus facilitates
the charge transport, causing an increase of conductivity in
the nanoparticle stripe. These nanoparticle stripes with a
few layers in height and several micrometers in width
possess large surface area, which increases their exposure
to ions and improves the ability to detect Hg2+ at low
concentrations. Besides, we studied the effect of molecular
length on the sensitivity of the sensor. It is shown that
the length of surface modification molecules is positively
correlated with the sensitivity of the sensor. The
fabricated devices exhibit a detection limit as low as
0.1 nM and a specific response towards Hg2+ ions.},
cin = {ICS-8},
ddc = {610},
cid = {I:(DE-Juel1)ICS-8-20110106},
pnm = {523 - Controlling Configuration-Based Phenomena (POF3-523)},
pid = {G:(DE-HGF)POF3-523},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29982113},
UT = {WOS:000442191900055},
doi = {10.1016/j.bios.2018.06.029},
url = {https://juser.fz-juelich.de/record/858551},
}