Enhancing biosensor sensitivity with CeO2 nanocomposites for biomedical and environmental applications
Chemical Engineering Journal,
Journal Year:
2025,
Volume and Issue:
unknown, P. 162526 - 162526
Published: April 1, 2025
Language: Английский
An electrochemical biosensor using AuNPs-Ti3C2Tx and ARGET ATRP reactions as signal amplification strategies for ultra-sensitive detection of HER2 protein
Bioelectrochemistry,
Journal Year:
2025,
Volume and Issue:
unknown, P. 108970 - 108970
Published: March 1, 2025
Language: Английский
Entropy spontaneous ratiometric electrochemical aptasensor based on polymerization and AuNPs signal amplification for Acetamiprid residue analysis
Wei‐Ming Li,
No information about this author
Yuzhen Jia,
No information about this author
Kunyilan Chen
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et al.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 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.
Language: Английский
Hairpin-aptamer Conformational Switching Assisted Dual-signal Ratiometric Detection of Aflatoxin B1 Based on Liquid Exfoliated Graphene/Ti3C2 MXene Nanocomposite
Fang Li,
No information about this author
Panpan Dong,
No information about this author
Zijian Wu
No information about this author
et al.
LWT,
Journal Year:
2025,
Volume and Issue:
unknown, P. 117340 - 117340
Published: Jan. 1, 2025
Language: Английский