Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 10, 2024
Abstract
The
newly
emerged
organic
photoelectrochemical
transistor
(OPECT)
has
been
demonstrated
promising
in
diverse
sectors,
yet
its
underlying
operation
rationale
remains
largely
unexplored
due
to
short
development
time.
Color,
arising
from
the
light‐matter
interactions,
is
ubiquitous
nature.
Here
concept
of
color‐gated
OPECT
biodetection
based
on
a
nanocomposite
hydrogel
proposed
and
devised,
which
exemplified
by
automatic
color
change
Pt
nanocubes
(NCs)‐encapsulated
with
Ag
+
‐responsiveness.
Linking
sandwich
immunorecognition
labeled
silver
nanoparticles
(Ag
NPs),
chemical
etching‐released
can
sensitively
affect
NCs‐catalyzed
conversion
o‐phenylenediamine,
leading
thus
altered
gating
characteristics.
This
study
features
expected
catalyze
new
category
advanced
“colored”
optobioelectronics,
given
rich
light‐matter‐bio
interactions.
Advanced Optical Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 16, 2024
Abstract
Detection
of
colorimetric
signals
is
commonly
used
in
various
analytical
methods
and
for
testing
non‐laboratory
resource‐limited
settings.
The
performance
assays
largely
based
on
nanoparticles
their
unique
optical
properties.
Multifunctional
combining
enzyme‐like
catalytic
properties—known
as
nanozymes—hold
great
promise
applications
signal‐generating
labels.
However,
the
extensive
focus
properties
leaves
overlooked.
In
this
article,
use
nanozymes
reviewed
relying
inherent
nanozymes,
detection
a
catalytically‐formed
product,
changes
caused
by
product.
impact
extinction
coefficient
reaction
products,
well
kinetic
parameters
sensitivity
limit
assays,
are
quantitatively
evaluated.
Finally,
existing
limitations
prospects
biosensors
summarized.
Centrifugal
microfluidics,
with
its
advantages
of
rapid
and
precise
fluid
control
without
the
need
for
external
pressure,
is
widely
applied
in
point-of-care
testing.
ACS Applied Nano Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 11, 2025
Constructing
nanozyme-based
single
atoms
with
exposed
metal-Nx
catalytic
sites
for
alendronate
sodium
(ALDS)
tablet
quality
control
is
a
complex
and
uncommon
task.
Herein,
we
presented
an
innovative
colorimetric
assay
to
detect
ALDS
utilizing
carbon-supported
Fe/Co
dual-atom
nanozymes
(Fe/CoSA-NCs)
derived
from
precursor
of
porphyrin
covalent
organic
frameworks
(COFs).
The
Fe/CoSA-NC
nanozymes,
featuring
Fe–N5
active
site
electronic
interactions
between
Fe
Co,
exhibited
enhanced
peroxidase-like
activity.
Experimental
findings
theoretical
calculations
elucidated
that
the
superior
activity
Fe/CoSA-NCs
stemmed
synergistic
effect
dual
atoms,
which
boosted
substrate
adsorption
reduced
reaction
barrier.
When
integrated
Fe/CoSA-NCs,
could
be
inhibited
due
ALDS-Fe3+
coordination.
Leveraging
this
mechanism,
rapid
selective
method
was
developed
detecting
ALDS.
sensor
showed
detection
limit
0.96
μM
in
phosphate
buffer,
surpassing
traditional
techniques
terms
efficiency,
accuracy,
simplicity.
Moreover,
system
successfully
utilized
pharmaceutical
determine
urine
samples.
This
work
opens
powerful
avenue
developing
efficient
COFs
expands
potential
applications
nanozyme
clinical
pharmacy.
Critical Reviews in Analytical Chemistry,
Год журнала:
2025,
Номер
unknown, С. 1 - 21
Опубликована: Фев. 19, 2025
Manganese
is
an
essential
metal
ion
involved
in
various
biological
and
environmental
processes,
but
its
excess
can
lead
to
toxicity,
particularly
affecting
the
nervous
system.
Therefore,
developing
selective
sensitive
detection
methods
for
Mn2+
ions
of
paramount
importance.
Colorimetric
fluorimetric
chemosensors
have
emerged
as
promising
tools
due
their
simplicity,
cost-effectiveness,
real-time
monitoring
capabilities.
This
review
discusses
recent
advances
colorimetric
that
exhibit
distinct
color
or
fluorescence
changes
upon
interaction
with
ions.
The
explores
different
organic
nanomaterials,
focusing
on
mechanisms
sensing,
sensitivity,
selectivity,
practical
applications
monitoring,
healthcare,
food
safety.
article
also
provides
insights
into
future
research
directions
aimed
at
overcoming
these
challenges,
improving
chemosensor
performance,
expanding
applicability
diverse
real-world
scenarios.
Wiley Interdisciplinary Reviews Nanomedicine and Nanobiotechnology,
Год журнала:
2025,
Номер
17(1)
Опубликована: Янв. 1, 2025
Wearable
sweat
sensors
for
detecting
biochemical
markers
have
emerged
as
a
transformative
research
area,
with
the
potential
to
revolutionize
disease
diagnosis
and
human
health
monitoring.
Since
2016,
substantial
body
of
pioneering
translational
work
on
has
been
reported.
This
review
aims
provide
comprehensive
summary
current
state-of-the-art
in
field,
offering
insights
perspectives
future
developments.
The
focus
is
wearable
microfluidic
platforms
collection
delivery
analytical
chemistry
applicable
devices.
Various
technologies,
including
those
based
synthetic
polymers,
paper,
textiles,
hydrogels,
are
discussed
alongside
diverse
detection
methods
such
electrochemistry
colorimetry.
Both
advantages
limitations
these
technologies
critically
examined.
concludes
our
sensors,
goal
inspiring
new
ideas,
innovations,
technical
advancements
further
development
practical
application
devices
promoting
health.
Analytical Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 10, 2025
Antibiotic
contamination
has
been
a
significant
concern
in
environmental
monitoring.
Nanozyme-based
colorimetric
sensors
can
provide
valuable
support
for
in-field
detection.
However,
the
development
of
sensing
elements
capable
identifying
an
entire
class
specific
antibiotics
using
single
material
poses
considerable
challenge.
In
this
work,
we
present
compartmentalized
dual-nanozyme
cascade
composite
(Au@mPDA/PAA-Cu2MI,
AmPC)
designed
detection
aminoglycoside
(AGs),
and
analyze
catalytic
mechanisms
dual-enzyme
system
detail.
The
AmPC
possesses
both
analogue
glucose
oxidase-like
(aGOx-like)
peroxidase-like
(POD-like)
activities.
process,
AGs
with
sugar
structure
serve
as
initial
substrate
reaction,
while
resulting
H2O2
acts
second
Using
gentamicin
(GMC)
proof
concept,
established
range
0.1-10
μg/mL,
limit
(LOD)
91
ng/mL.
addition,
validated
response
other
employed
principal
component
analysis
(PCA)
differentiating
among
various
AGs.
This
approach
enables
nanozymes
to
selectively
recognize
their
targets
through
mechanism.
Furthermore,
it
facilitates
simultaneous
identification
antibiotics,
highlighting
its
potential
applications.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 1, 2025
Abstract
A
low‐cost,
high‐precision,
and
secure
real‐time
system
for
monitoring
food
freshness
can
significantly
improve
spoilage
issues,
yet
traditional
colorimetric
sensor
arrays
often
suffer
from
chemical
dyes’
high
toxicity
limited
color
changes.
Here,
a
metal‐polyphenol
network
array
(MPN‐CSA)
is
built
detecting
total
volatile
base
nitrogen
(TVB‐N)
markers
of
meat
freshness.
The
multi‐level
competitive
coordination
process
between
the
amine
substances
endows
with
changes
far
beyond
those
dyes
(reaching
detection
limit
300
ppb).
By
integrating
convolutional
neural
(CNN)
technology,
an
online
platform
developed
freshness,
achieving
overall
accuracy
rate
99.83%.
This
environmentally
friendly,
economically
viable
MPN‐CSA
that
monitors
in
complex
storage
environments
be
incorporated
into
packaging
boxes,
enabling
consumers
suppliers
to
assess
real‐time,
thus
helping
reduce
waste
prevent
foodborne
illnesses.
