Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 9, 2024
Abstract
The
type
of
coordinated
N
atoms
in
the
metal‐N
coordination
structure
is
paramount
importance
to
catalytic
property
N‐modified
carbon‐based
single‐atom
catalysts
(SACs).
Extended
X‐ray
absorption
fine
(EXAFS)
spectroscopy
a
powerful
tool
for
analyzing
environments
SACs.
Despite
its
efficacy,
limited
availability
synchrotron
light
sources
and
complexity
data
analysis
have
constrained
broader
application
identifying
types
within
In
this
work,
two
kind
CoN
4
SACs,
were
prepared
by
varying
source.
Then
their
electrochemiluminescence
(ECL)
behavior
luminol/dissolved
oxygen
system
during
cathodic
scanning
investigated.
comparison
4(pyridinic
N)
,
which
spin
density
displays
d
z2
orbital
characteristics,
4(pyrrolic
exhibits
xz
features,
was
more
conducive
subsequent
cleavage
O−O
bond
O
2
⋅
−
⋅OH,
resulting
generation
active
intermediates
*OH
promotion
ECL
emission.
This
work
demonstrates
that
technique
provides
novel
method
rapid
identification
Co−N
nature
metal
center
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(15), P. 4665 - 4671
Published: April 8, 2024
Effective
bimetallic
nanoelectrocatalysis
demands
precise
control
of
composition,
structure,
and
understanding
catalytic
mechanisms.
To
address
these
challenges,
we
employ
a
two-in-one
approach,
integrating
online
synthesis
with
real-time
imaging
Au@Metal
core–shell
nanoparticles
(Au@M
NPs)
via
electrochemiluminescence
microscopy
(ECLM).
Within
120
s,
electrodeposition
in
situ
activity
screening
alternate.
ECLM
captures
transient
faradaic
processes
during
potential
switches,
visualizes
electrochemical
real-time,
tracks
dynamics
at
the
single-particle
level.
Analysis
using
ECL
photon
flux
density
eliminates
size
effects
yields
quantitative
electrocatalytic
results.
Notably,
nonlinear
trend
corresponding
to
shell
metal
Au
surface
atomic
ratio
is
discerned,
quantifying
optimal
component
Au@M
NPs.
This
approach
offers
comprehensive
behavior
deposition
process
high
spatiotemporal
resolution,
which
crucial
for
tailoring
efficient
nanocatalysts
diverse
applications.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 9, 2024
The
type
of
coordinated
N
atoms
in
the
metal-N
coordination
structure
is
paramount
importance
to
catalytic
property
N-modified
carbon-based
single-atom
catalysts
(SACs).
Extended
X-ray
absorption
fine
(EXAFS)
spectroscopy
a
powerful
tool
for
analyzing
environments
SACs.
Despite
its
efficacy,
limited
availability
synchrotron
light
sources
and
complexity
data
analysis
have
constrained
broader
application
identifying
types
within
In
this
work,
two
kind
CoN
Nano Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 27, 2025
Crystals
with
three-dimensional
(3D)
stereoscopic
structures,
characterized
by
diverse
shapes,
crystallographic
planes,
and
morphologies,
represent
a
significant
advancement
in
catalysis.
Differentiating
quantifying
the
catalytic
activity
of
specific
surface
facets
sites
at
single-particle
level
is
essential
for
understanding
predicting
performance.
This
study
employs
super-resolution
radial
fluctuations
electrogenerated
chemiluminescence
microscopy
(SRRF-ECLM)
to
achieve
high-resolution
mapping
electrocatalytic
on
individual
3D
Cu2O
crystals,
including
cubic,
octahedral,
truncated
octahedral
structures.
With
spatial
resolution
below
100
nm,
SRRF-ECLM
precisely
delineates
contours
enabling
detailed
analysis
distribution
across
distinct
interfaces.
By
quantitatively
measuring
ECL
emission
intensities
from
different
planes
joint
interfaces,
we
constructed
distributions,
offering
an
intuitive
comprehensive
perspective
single-catalyst
activity.
approach
advances
electrochemical
provides
valuable
insights
designing
more
efficient
catalysts
energy
conversion
chemical
synthesis
applications.
Chemical Communications,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Using
an
Ir(
iii
)-based
redox
mediator
([Ir(sppy)
3
]
3-
)
overcomes
the
traditional
kinetic
barrier
of
tri-
n
-propylamine
oxidation
on
BDD,
enhancing
ECL
from
Ru(
ii
)-labeled
beads
by
up
to
46-fold.
Analytical Methods,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Construction
of
the
sensitive
label-free
ECL
immunosensor
BSA/anti-CgB/GDY
QDs@Au
NPs/GCE
and
its
application
for
detection
pNET
marker
chromogranin
B.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 6, 2025
Oxygen
reduction
reaction
(ORR)
plays
a
crucial
role
in
both
the
chemical
and
energy
industries.
Despite
substantial
advancements
theoretical,
computational,
experimental
studies,
identifying
situ
activity
selectivity
ORR
electrocatalysis
remains
major
challenge.
Here,
using
suite
of
correlative
operando
scanning
electrochemical
probe
electrochemiluminescence
microscopy
techniques,
we
establish
link
between
morphological
structure
local
single
Au
Au@Pt
platelets
at
subparticle
level.
It
is
clearly
shown
that
edge
facets
exhibit
higher
for
4e-
compared
to
basal
planes,
whereas
planes
demonstrate
superior
2e-
relative
facets.
These
findings
deepen
our
understanding
across
different
level,
which
offers
valuable
guidance
rational
design
highly
efficient
electrocatalysts.
Analytical Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 15, 2025
Herein,
an
efficient
luminol-H2O2
electrochemiluminescence
(ECL)
system
with
bimetallic
organic
gels
as
ECL
signal
booster
and
innovative
heterosequence
aptamer
recognition
a
target
conversion
strategy
is
used
to
construct
sensitive
specific
aptasensor
for
the
detection
of
β2-microglobulin
(B2M),
key
biomarker
end-stage
renal
disease
(ESRD).
Impressively,
porous
Fe@Cu
(Fe@Cu
MOGs)
act
coreaction
accelerators
confinement-enhanced
reactors
system,
amplifying
by
21-fold
compared
traditional
which
greatly
enhanced
sensitivity
biosensor.
Compared
homosequence
approach
competitive
binding
aptamers
single
site,
synergistic
multiple
sites
could
improve
specificity
aptasensor,
validated
experiments
molecular
docking
simulations.
Therefore,
developed
exhibits
remarkable
dynamic
range
10
fg/mL-1
μg/mL
ultralow
limit
0.9
fg/mL,
superior
previously
reported
works.
Additionally,
demonstrated
consistent
performance
conventional
clinical
immunoturbidimetric
assays
high
B2M
concentration
in
14
samples,
well
exhibiting
trace
levels
that
are
undetectable
immunoturbidimetry.
This
offers
accurate
platform
recognition,
promising
applications
detection,
diagnosis,
therapeutic
monitoring,
advancing
scientific
research
on
early
pathological
changes
discovery.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 20, 2024
Abstract
The
visualization
of
electrode
reactions
is
significant
for
ultra
sensitive
detection.
Traditional
electrochemiluminescence
(ECL)
detection
method
can
hardly
visualize
reactions.
Combining
ECL
imaging
technology
and
traditional
methods
overcome
the
lack
visual
feedback
key
information
in
sensor
construction.
In
contrast
to
cyclic
voltammetry
testing,
applying
a
constant
voltage
surface
results
more
stable
signal.
this
study,
methionine‐stabilized
gold
nanoclusters
(Met‐AuNCs)
are
used
as
efficient
near‐infrared
luminescent
clusters,
triethylamine
(TEA)
coreactants
construct
an
acetamiprid
(ACT).
ternary
heterojunction
ZnS‐ZnIn
2
S
4
‐In
3
(Z‐Z‐I)
forms
stepwise
electron
transfer
mode,
facilitating
rapid
generation
free
radicals
TEA.
Furthermore,
Z‐Z‐I
serves
substrate,
providing
large
loading
area
DNA
chain,
which
lays
foundation
wide
range.
Such
has
linear
range
(100
f
m
1
µ
)
achieves
low
limit
(42
fM)
ACT
This
study
not
only
provides
accurate
detecting
agricultural
products
but
also
foretells
promising
application
electrochemiluminescent
sensors.
