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Mater Sci Nanotechnol 2017 | Volume 1 Issue 2
allied
academies
Nanomaterials and Nanochemistry
November 29-30, 2017 | Atlanta, USA
International Conference on
Fabrication and characterization of PEI/TaS2 LbL multilayer films
M Irie
Osaka Electro-Communication University, Japan
P
EI/TaS
2
LbL multilayer films were assembled by the layer-
by-layer (LbL) technique from TaS
2
nanosheet colloids.
The LbL technique is applicable to a wide variety of materials
with charges, and is fabricated without special instruments.
TaS
2
has a layered structure with negative layer charges. Li
was intercalated into TaS
2
to prepare Li
x
TaS
2
. Exfoliation
of TaS
2
was carried out by sonicating Li
x
TaS
2
in water.
Polyethyleneimine (PEI, MW=75000, 50 wt.% solutions in
water) was adopted as cationic polyelectrolyte to assemble
LbL multilayer films. The X-ray diffraction patterns shows that
the (001) diffraction peak was observed at 9.6° (d=0.92 nm),
which means the interlayer of TaS
2
was spread by 0.32 nm.
Observed Δc=0.32 nm is almost as same as PEI monolayer.
The calculated crystallite size from (001) diffraction peak was
12.2 nm. Since the thickness of one layer of the PEI/TaS
2
LbL
multilayer film is about 1 nm, 12 nm is just equal to the LbL
repeated times. The electrical characterization of PEI/TaS
2
LbL multilayer film will be discussed in details. .
Speaker Biography
M Irie is graduated from Osaka Electro-Communication University in 2014. She is a
graduate student of Osaka Electro-Communication University.
e:
me16a002@oecu.jp