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conferenceseries
.com
Volume 7
Biosensors Journal
ISSN: 2090-4967
Electrochemistry 2018
June 11-12, 2018
June 11-12, 2018 | Rome, Italy
4
th
International Conference on
Electrochemistry
Improving single carbon nanotube electrode contacts using molecular electronics
Atiweena Krittayavathananon
1, 2
1
University of Oxford, UK
2
VISTEC, Thailand
C
arbon nanotubes (CNTs) and their derivatives are commonly applied as both catalyst supports and catalysts in many
electronic devices. To achieve high-performance electronics, researchers have focused intensive efforts into developing
the chemical and physical properties of new materials but largely ignore the potentially fundamental problem of forming a
high-quality contact with the electrochemical substrate. When two materials are brought into contact, the junction causes a
potential drop in the system resulting from a contact resistance. To understand the junction properties of metal/CNT interfaces,
the nano-impact methodology has been developed as a route to measuring the resistance across individual CNT−electrode
contacts. In these experiments, some of the CNTs in the solution phase form a bridge across two adjacent gold electrode
contacts. An average bridging resistance for individual CNTs contact is 1.1±0.1×108 Ω. To improve the CNT-Au contact, we
report the use of an electroactive species, acetaminophen, to modify the electrical connection between a carbon nanotube
(CNT) and an electrode. By measuring the current signal across the bridge of single acetaminophen-modified CNT contact
between the two microbands of the IDE-Au, the current response of acetaminophen modified on CNT is significant higher
than the bare CNT, indicating that the electronic properties of the single CNT-Au contact are improved by modifying CNT
with acetaminophen. It investigates that the adsorbed acetaminophen molecules contribute to promoting the electron transfer
processes between the junctions of two materials.
Recent Publications:
1.
Krittayavathananon A, Li X, Batchelor McAuley C, Kätelhön E, Chaisiwamongkhol K, Sawangphruk M and Compton
R G (2017) Improving single-carbon nanotube-electrode contacts using molecular electronics. The Journal of Physical
Chemistry Letters 8:3908–3911.
2.
Proctor S J and Linholm L W (1982) A direct measurement of interfacial contact resistance. IEEE Electron Device Letters
3:294-296.
3.
Li X, Batchelor McAuley C, Shao L, Sokolov S, Young N and Compton R G (2017) Quantifying single-carbon nanotube-
electrode contact via the nanoimpact method. The Journal of Physical Chemistry Letters 8:507-511.
4.
Sokolov S, Eloul S, Kätelhön E, Batchelor McAuley C and Compton R G (2017) Electrode-particle impacts: a user’s guide.
Physical Chemistry Chemical Physics 19:28-43.
5.
Krittayavathananon A, Li X, Sokolov S V, Batchelor McAuley C, Sawangphruk M and Compton R G (2018) The solution
phase aggregation of graphene nanoplates. Applied Materials Today 10:122-126
Atiweena Krittayavathananon, Biosens J 2018, Volume 7
DOI: 10.4172/2090-4967-C1-002
Figure 1:
Schematic shows an opportunity
of the improvement of Faradaic electron
transfer process between acetaminophen
modified CNTs and two adjacent gold
electrode contacts