Journal of Functional Biomaterials,
Journal Year:
2024,
Volume and Issue:
15(11), P. 347 - 347
Published: Nov. 15, 2024
Popular
photoluminescent
(PL)
nanomaterials,
such
as
carbon
dots,
have
attracted
substantial
attention
from
scientists
due
to
their
photophysical
properties,
biocompatibility,
low
cost,
and
diverse
applicability.
Carbon
dots
been
used
in
sensors,
cell
imaging,
cancer
therapy.
Leek
seeds
with
anticancer,
antimicrobial,
antioxidant
functions
serve
traditional
Chinese
medicine.
However,
leek
not
studied
a
precursor
of
dots.
In
this
study,
underwent
supercritical
fluid
extraction
process.
seed
extract
was
obtained
then
carbonized
using
dry
heating
method,
followed
by
hydrolysis
form
dot
micelles
(CD-micelles).
CD-micelles
exhibited
analyte-induced
PL
quenching
against
Co
RSC Advances,
Journal Year:
2025,
Volume and Issue:
15(9), P. 6962 - 6973
Published: Jan. 1, 2025
The
leaching
of
aluminum
and
cobalt
ions
into
canned
foods,
such
as
from
tomato
sauce
tuna,
raises
concerns
about
potential
health
risks,
making
their
accurate
detection
essential
for
food
safety.
In
this
study,
we
developed
a
novel
ratiometric
fluorometric
sensor
based
on
dual-emission
carbon
dots
capable
selectively
detecting
(Al3+)
(Co2+)
after
single
excitation.
exhibits
distinct
fluorescence
responses:
enhance
the
emission
at
403
nm
due
to
interactions
with
nitrogen
sulfur
groups
dot
surface,
while
Al3+
532
through
binding
oxygen-rich
carboxyl
hydroxyl.
This
differential
response
stems
varying
affinities
these
metal
different
functional
groups,
confirmed
mechanistic
studies
comprehensive
characterization
dots,
including
TEM,
UV-Vis,
FTIR,
lifetime
analyses.
method
demonstrates
excellent
sensitivity,
limits
(LOD)
0.012
μM
Co2+
0.06
Al3+.
sensor's
performance
was
validated
real
samples,
successfully
determining
in
tuna.
exhibited
high
selectivity
minimal
interference,
achieving
recovery
rates
97.50-100.67%
97.01-98.02%
Co2+.
These
findings
underscore
robustness
practical
applicability
proposed
reliable
tool
monitoring
ensuring
safety
compliance
regulatory
standards.
