The
oxygen
reduction
reaction
(ORR)
has
been
recognized
well
as
an
essential
step
to
trigger
the
electrochemiluminescence
(ECL)
of
luminol/O2
system
but
suffers
from
sluggish
kinetics.
Herein,
ECL
without
involving
ORR
is
reported
by
using
a
4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl
(4-amino-TEMPO)
grafted
glassy
carbon
electrode
(4-amino-TEMPO/GCE).
This
exhibits
high
catalytic
activity
toward
oxidation
luminol,
though
it
covered
with
organic
film.
Such
promoted
luminol
on
results
in
5.0-fold
enhancement
at
anodic
potential,
ensuring
detection
more
sensitive.
mechanism
studies
indicate
that
catalysis
4-amino-TEMPO/GCE
can
provide
additional
anion
radical
(L–•)
for
enhancing
system.
Hence,
this
work
introduces
different
approach
modulate
emission
based
immobilized
catalyst.
Analytical Chemistry,
Год журнала:
2023,
Номер
95(6), С. 3267 - 3273
Опубликована: Фев. 1, 2023
FeOOH
nanorods,
as
one-dimensional
nanomaterials,
have
been
widely
used
in
many
fields
due
to
their
stable
properties,
low
cost,
and
easy
synthesis,
but
application
the
field
of
chemiluminescence
(CL)
is
rarely
reported.
In
this
work,
nanorods
were
synthesized
by
a
simple
environmentally
friendly
one-pot
hydrothermal
method
for
first
time
catalyst
generating
strong
CL
with
luminol
without
additional
oxidant.
Remarkably,
luminol-FeOOH
exhibits
about
250
times
stronger
than
luminol-H2O2
system.
Its
intensity
was
significantly
quenched
uric
acid.
We
established
simple,
rapid,
sensitive,
selective
detection
acid
linear
range
20–1000
nM
limit
6.3
(S/N
=
3).
addition,
we
successfully
applied
human
serum,
standard
recoveries
95.6–106.4%.
Analytical Chemistry,
Год журнала:
2023,
Номер
95(24), С. 9380 - 9387
Опубликована: Июнь 7, 2023
Metal-organic
gels
(MOGs)
are
a
category
of
metal-organic
smart
soft
materials
with
large
specific
surface
areas,
loose
porous
structures,
and
open
metal
active
sites.
In
this
work,
trimetallic
Fe(III)Co(II)Ni(II)-based
MOGs
(FeCoNi-MOGs)
were
synthesized
at
room
temperature
via
simple
mild
one-step
procedure.
Fe3+,
Co2+,
Ni2+
the
three
central
ions
in
it,
while
1,3,5-benzenetricarboxylic
acid
(H3BTC)
served
as
ligand.
The
solvent
enclosed
it
was
then
removed
by
freeze-drying
to
get
corresponding
xerogels
(MOXs).
as-prepared
FeCoNi-MOXs
have
excellent
peroxidase-like
activity
can
significantly
enhance
luminol/H2O2
chemiluminescence
(CL)
more
than
3000
times,
which
is
very
effective
compared
other
reported
MOXs.
Based
on
inhibitory
effect
dopamine
CL
FeCoNi-MOXs/luminol/H2O2
system,
simple,
rapid,
sensitive,
selective
method
for
detection
established
linear
range
5–1000
nM
limit
2.9
(LOD,
S/N
=
3).
Furthermore,
has
been
effectively
used
quantitative
measurement
injections
human
serum
samples,
recovery
rate
99.5–109.1%.
This
research
brings
up
prospects
application
MOXs
CL.
Multifunctional
phototheranostics
that
integrate
several
diagnostic
and
therapeutic
strategies
into
one
platform
hold
great
promise
for
precision
medicine.
However,
it
is
really
difficult
molecule
to
possess
multimodality
optical
imaging
therapy
properties
all
functions
are
in
the
optimized
mode
because
absorbed
photoenergy
fixed.
Herein,
a
smart
one-for-all
nanoagent
photophysical
energy
transformation
processes
can
be
facilely
tuned
by
external
light
stimuli
developed
precise
multifunctional
image-guided
therapy.
A
dithienylethene-based
designed
synthesized
has
two
light-switchable
forms.
In
ring-closed
form,
most
of
dissipates
via
nonradiative
thermal
deactivation
photoacoustic
(PA)
imaging.
ring-open
possesses
obvious
aggregation-induced
emission
features
with
excellent
fluorescence
photodynamic
properties.
vivo
experiments
demonstrate
preoperative
PA
help
delineate
tumors
high-contrast
manner,
intraoperative
able
sensitively
detect
tiny
residual
tumors.
Furthermore,
induce
immunogenic
cell
death
elicit
antitumor
immunity
significantly
suppress
solid
This
work
develops
agent
related
phototheranostic
light-driven
structure
switch,
which
promising
biomedical
applications.
Biosensors,
Год журнала:
2024,
Номер
14(8), С. 403 - 403
Опубликована: Авг. 21, 2024
The
convenient
and
sensitive
detection
of
metabolites
is
great
significance
for
understanding
human
health
status
drug
development.
Solid-phase
electrochemiluminescence
(ECL)
enzyme
electrodes
show
potential
in
metabolite
based
on
the
enzyme-catalyzed
reaction
product
hydrogen
peroxide
(H2O2).
Herein,
a
solid-phase
ECL
sensor
was
fabricated
confined
emitter
an
immobilized
using
electrostatic
nanocage
array,
constructing
platform
cholesterol.
cage
nanochannel
consists
bipolar
bilayer
vertically
aligned
mesoporous
silica
film
(bp-VMSF).
upper
layer
bp-VMSF
amino-modified,
positively
charged
VMSF
(p-VMSF),
lower
negatively
(n-VMSF).
most
commonly
used
probe
tris(bipyridine)ruthenium(II)
(Ru(bpy)32+)
fixed
n-VMSF
by
adsorption
from
repulsion
p-VMSF,
generating
significantly
enhanced
stable
signals.
successful
preparation
characterized
scanning
electron
microscopy
(SEM)
electrochemical
methods.
After
amino
groups
outer
surface
were
derivatized
with
aldehyde,
cholesterol
oxidase
(ChOx)
molecules
covalently
immobilized.
construction
electrode
cyclic
voltammetry
(CV)
impedance
spectroscopy
(EIS).
When
corresponding
substrate,
cholesterol,
present
solution,
signal
Ru(bpy)32+
quenched
H2O2,
enabling
high-sensitivity
linear
range
detecting
0.05
mM
to
5.0
mM,
limit
(LOD)
1.5
μM.
Nanoscale,
Год журнала:
2023,
Номер
16(2), С. 504 - 526
Опубликована: Дек. 13, 2023
Silicon
carbide
(SiC)
nanomaterials
have
emerged
as
promising
candidates
for
supercapacitor
electrodes
due
to
their
unique
properties,
which
encompass
a
broad
electrochemical
stability
range,
exceptional
mechanical
strength,
and
resistance
extreme
conditions.
This
review
offers
comprehensive
overview
of
the
latest
advancements
in
SiC
supercapacitors.
It
encompasses
diverse
synthesis
methods
nanomaterials,
including
solid-state,
gas-phase,
liquid-phase
techniques,
while
also
discussing
advantages
challenges
associated
with
each
method.
Furthermore,
this
places
particular
emphasis
on
performance
SiC-based
supercapacitors,
highlighting
pivotal
role
nanostructures
porous
architectures
enhancing
specific
capacitance
cycling
stability.
A
deep
dive
into
composite
materials,
such
SiC/carbon
composites
SiC/metal
oxide
hybrids,
is
included,
showcasing
potential
elevate
energy
density
Finally,
paper
outlines
prospective
research
directions
aimed
at
surmounting
existing
fully
harnessing
SiC's
development
next-generation
Sensors & Diagnostics,
Год журнала:
2023,
Номер
2(3), С. 480 - 491
Опубликована: Янв. 1, 2023
This
review
summarizes
the
research
progress
of
ECL-based
POCT
devices,
including
categories,
detection
strategies
and
application
scenarios,
which
we
believe
will
help
construct
design
ECL
devices
for
POCT.
Electrochimica Acta,
Год журнала:
2024,
Номер
489, С. 144256 - 144256
Опубликована: Апрель 9, 2024
Electrochemiluminescence
(ECL),
an
intriguing
luminescent
phenomenon
induced
by
electrochemical
stimulation,
has
evolved
from
studying
electron
transfer
reactions
to
a
powerful
analytical
method
and
imaging
technique.
ECL
can
be
generated
through
annihilation
or
co-reactant
methods,
with
recent
advancements
integrating
it
into
devices
for
diverse
applications.
This
review
traces
the
evolution
of
its
early
applications
developments
in
technology.
Notably,
utilization
charge-coupled
(CCD)
multiplying
(EMCCD)
microscopy
revolutionized
capabilities,
making
cost-effective
option
point-of-care
testing.
The
explores
heterogeneous
mechanism,
emphasizing
limitations
challenges
visualizing
objects
away
electrode
surface.
synergy
between
is
highlighted,
showcasing
contributions
understanding
mechanisms
improving
use
biological
contexts.
Finally,
encapsulates
innovative
approaches
material
design,
surface
modification,
architecture,
providing
comprehensive
overview
strategies
control
active
layer
advance
microscopy.
