C – Journal of Carbon Research,
Journal Year:
2024,
Volume and Issue:
10(4), P. 98 - 98
Published: Nov. 27, 2024
Graphitic
carbon
nitride
(g-C3N4)
has
gained
significant
attention
due
to
its
unique
physicochemical
properties
as
a
metal-free,
two-dimensional,
carbon-based
polymeric
fluorescent
substance
composed
of
tris-triazine-based
patterns
with
slight
hydrogen
content
and
carbon-to-nitrogen
ratio
3:4.
It
forms
layered
structures
like
graphite
demonstrates
exciting
unusual
properties,
making
g-C3N4
widely
used
in
nanoelectronic
devices,
spin
electronics,
energy
storage,
thermal
conductivity
materials,
many
others.
The
biomedical
industry
greatly
benefited
from
excellent
optical,
electrical,
characteristics,
such
abundance
on
Earth,
affordability,
vast
surface
area,
fast
synthesis.
Notably,
the
heptazine
phase
displays
stable
electronic
bands.
Another
quality
this
semiconductor
material
is
fluorescence
property,
which
also
helpful
preparing
biosensors.
Based
g-C3N4,
electrochemical
biosensors
have
provided
better
biocompatibility,
higher
sensitivity,
low
detection
limits,
nontoxicity,
selectivity,
versatility
functionalization
for
delicate
identification
target
analytes.
This
review
covers
latest
studies
using
efflorescent
graphitic
fabricate
various
biomarkers.
Carbon
nitrides
been
reported
possess
electroactivity
massive
surface-to-volume
ratio,
hydrogen-bonding
functionality,
thus
allowing
electrochemical-based,
highly
sensitive,
selective
platforms
an
entire
array
Considering
preceding
information,
addresses
fundamentals
background
numerous
synthesis
pathways.
Furthermore,
importance
sensing
diverse
biomarkers
emphasized
article.
discusses
current
status
challenges
future
perspectives
nitride-based
sensors,
open
paths
toward
their
practical
application
aspects
clinical
diagnostics.
Deleted Journal,
Journal Year:
2025,
Volume and Issue:
7(4)
Published: April 1, 2025
Abstract
Dopamine
can
be
used
as
a
biomarker
for
diseases
such
Alzheimer’s,
bipolar
disorder,
schizophrenia,
mania,
to
mention
few,
well
addiction
tobacco.
Thus,
its
measurement
is
of
biomedical
importance.
We
present
an
easy-to-construct,
one-step,
electrochemical
sensor
dopamine
based
on
drop
coating
commercial
graphene/poly
(3,4-ethylenedioxythiophene):polystyrene
sulphonate
(Gr-PEDOT:PSS)
hybrid
ink
dispersion
bare
glassy
carbon
electrode
surface.
The
conductive
polymer’s
structural
properties
and
composition
were
explored
using
XRD,
Raman,
FTIR
spectroscopy
electron
microscopy.
nanocomposite
exhibited
uniform
size
distribution
functional
groups
aromatic,
thiol,
olefinic
bonds
improved
the
surface
chemistry
between
electrolyte/analyte
electrode.
Characterization
through
impedance
voltammetry
demonstrated
that
Gr-PEDOT:PSS
significantly
enhances
transfer
kinetics
at
therefore
improve
electrooxidation
dopamine.
achieved
detection
limit
0.19
µM
within
linear
concentration
range
3.13–400
It
also
high
selectivity
against
potential
interfering
agents
like
ascorbic
acid,
caffeine,
urea,
with
recovery
percentages
ranging
from
105
109%
in
human
serum
samples.