Enhancing biosensor sensitivity with CeO2 nanocomposites for biomedical and environmental applications
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 162526 - 162526
Опубликована: Апрель 1, 2025
Язык: Английский
An electrochemical biosensor using AuNPs-Ti3C2Tx and ARGET ATRP reactions as signal amplification strategies for ultra-sensitive detection of HER2 protein
Bioelectrochemistry,
Год журнала:
2025,
Номер
unknown, С. 108970 - 108970
Опубликована: Март 1, 2025
Язык: Английский
Entropy spontaneous ratiometric electrochemical aptasensor based on polymerization and AuNPs signal amplification for Acetamiprid residue analysis
Research Square (Research Square),
Год журнала:
2025,
Номер
unknown
Опубликована: Март 26, 2025
Abstract
Acetamiprid
(ACE),
a
next-generation
chlorinated
neonicotinoid
insecticide,
has
been
extensively
employed
for
pest
control.
However,
its
excessive
residues
in
food
and
the
environment
have
raised
significant
concerns
regarding
human
health.
To
address
need
simple,
accurate,
efficient
ACE
detection
method,
this
study
developed
ratiometric
electrochemical
aptasensor
utilizing
dual
signal
amplification
strategy
involving
atom
transfer
radical
polymerization
(ATRP)
gold
nanoparticles
(AuNPs).
Methylene
blue
(MB)
served
as
internal
reference
signal,
which
was
attached
to
aptamer-DNA
1
(dsDNA)
through
electrostatic
adsorption
intercalation.
Ferrocenyl
methyl
methacrylate
(FMMA)
polymerized
into
long
chains
via
ATRP,
generating
significantly
amplified
electrical
compared
that
of
monomeric
FMMA.
AuNPs,
known
their
bioconjugability,
were
linked
DNA
2
(AuNPs-DNA
2),
enhancing
loading
capacity
expanding
ATRP
reaction
sites.
In
presence
ACE,
MB
decreased
while
FMMA
polymer
increased,
achieving
with
limit
(LOD)
19.26
pg/mL.
This
not
only
enhances
selectivity
but
also
mitigates
influence
background
currents,
offering
novel
effective
approach
real-world
sample
analysis.
Язык: Английский
Hairpin-aptamer Conformational Switching Assisted Dual-signal Ratiometric Detection of Aflatoxin B1 Based on Liquid Exfoliated Graphene/Ti3C2 MXene Nanocomposite
LWT,
Год журнала:
2025,
Номер
unknown, С. 117340 - 117340
Опубликована: Янв. 1, 2025
Язык: Английский