Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Nov. 26, 2024
Abstract
A
novel
modified
sensor
based
on
electropolymerization
of
hippuric
acid
(HA)
using
cyclic
voltammetry
within
the
potential
window
−
1
to
1.5
V
for
10
cycles
at
a
scan
rate
100
mV
s
−1
over
multiwalled
carbon
nanotubes
(MWCNTs)
battery
graphite
electrode
(BGE).
Poly
(HA)/MWCNTs/BGE
exhibited
two
linearity
ranges
3.00
×
−3
1.00
µM
(5.29
−4
–
0.18
µg/ml)
and
5.00
3
(0.88−
176.22
with
limit
detection
(LOD)
0.06
−2
(1.06
quantification
(LOQ)
2.00
(3.52
µg/ml).
The
poly
was
successfully
applied
determination
SER
in
presence
tryptophan
human
blood
serum
recovery
98.31–105.47%
RSD
values
3.02–
4.77%.
Green
chemistry
metrics
:
national
environmental
index
(NEMI),
analytical
greenness
metric
(AGREE),
Raynie
Driver,
green
procedure
(GAPI),
eco-scale
were
employed
indicated
that
proposed
can
be
classified
as
an
excellent
method,
achieving
score
84.
Analytical Letters,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 18
Published: Nov. 1, 2024
Caffeic
acid
(CA)
based
polyurethane
(PU)
films
were
synthesized
and
characterized
for
the
simultaneous
determination
of
melatonin
(MT)
serotonin
(5-HT).
The
CA
PUs
using
a
polyol
mixture
4,4'-diisocyanodiphenylmethane
(MPI),
polyethylene
glycol-200
(PEG),
CA.
PEG–CA
monomer
units
in
varied
molar
ratios
99:1,
97:3,
95:5,
90:10.
by
FTIR
spectroscopy
thermal
analysis.
These
PU
coated
onto
screen-printed
carbon
electrodes
(SPCEs)
with
varying
thicknesses
used
MT
5-HT.
Electrochemical
responses
5-HT
evaluated
differential
pulse
voltammetry.
limit
detection
correlation
coefficient
280
µM
0.9797,
respectively,
while
5-HT,
was
150
0.9690.
precision,
expressed
as
relative
standard
deviation
2.633%
4.668%
findings
suggest
that
PU-modified
hold
potential
medical
biomedical
applications.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Nov. 26, 2024
Abstract
A
novel
modified
sensor
based
on
electropolymerization
of
hippuric
acid
(HA)
using
cyclic
voltammetry
within
the
potential
window
−
1
to
1.5
V
for
10
cycles
at
a
scan
rate
100
mV
s
−1
over
multiwalled
carbon
nanotubes
(MWCNTs)
battery
graphite
electrode
(BGE).
Poly
(HA)/MWCNTs/BGE
exhibited
two
linearity
ranges
3.00
×
−3
1.00
µM
(5.29
−4
–
0.18
µg/ml)
and
5.00
3
(0.88−
176.22
with
limit
detection
(LOD)
0.06
−2
(1.06
quantification
(LOQ)
2.00
(3.52
µg/ml).
The
poly
was
successfully
applied
determination
SER
in
presence
tryptophan
human
blood
serum
recovery
98.31–105.47%
RSD
values
3.02–
4.77%.
Green
chemistry
metrics
:
national
environmental
index
(NEMI),
analytical
greenness
metric
(AGREE),
Raynie
Driver,
green
procedure
(GAPI),
eco-scale
were
employed
indicated
that
proposed
can
be
classified
as
an
excellent
method,
achieving
score
84.
