A
light-emitting
organosilane
molecule
based
on
a
Ru-complex
was
synthesized
from
1,10-phenanthroline,
(3-Aminopropyl)triethoxysilane
(APTES),
ruthenium
trichloride,
and
2,2′-Bipyridine.
The
resulting
complex
covalently
attached
to
transparent
conductive
substrate,
Indium-Tin
Oxide
(ITO),
using
straightforward
dipping
method.
Surface
characterization
of
the
modified
substrates
conducted
through
X-ray
photoelectron
spectroscopy
(XPS)
electrochemical
experiments,
confirming
presence
covalent
bonds.
immobilized
film
ITO
demonstrated
robust
stability
as
electrode
holds
significant
promise
novel
material.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: April 27, 2024
Abstract
Highly
efficient
interconversion
of
different
types
energy
plays
a
crucial
role
in
both
science
and
technology.
Among
them,
electrochemiluminescence,
an
emission
light
excited
by
electrochemical
reactions,
has
drawn
attention
as
powerful
tool
for
bioassays.
Nonetheless,
the
large
differences
timescale
among
diverse
charge-transfer
pathways
from
picoseconds
to
seconds
significantly
limit
electrochemiluminescence
efficiency
hamper
their
broad
applications.
Here,
we
report
coordination
strategy
improve
carbon
nitrides
engineering
shallow
electron
trap
states
via
Au-N
bond
functionalization.
Quantitative
kinetics
measurements
theoretic
calculations
jointly
disclose
that
bonds
endow
states,
which
coordinate
fast
transfer
bulk
emitter
slow
redox
reaction
co-reagent
at
diffusion
layers.
The
ultimately
accelerate
rate
emissive
electron-hole
recombination,
setting
new
cathodic
record
nitrides,
empowering
visual
sensor
nitrite
ion,
typical
environmental
contaminant,
with
superior
detection
range
limit.
ACS Sensors,
Journal Year:
2023,
Volume and Issue:
8(2), P. 933 - 939
Published: Jan. 26, 2023
Heterogeneous
electrochemiluminescence
(ECL)
assays
employing
tri-n-propylamine
as
a
co-reactant
and
tris(2,2′-bipyridine)ruthenium(II)
([Ru(bpy)3]2+)
derivative
an
emissive
label
are
integral
to
the
majority
of
academic
commercial
applications
ECL
sensing.
This
model
system
is
active
research
area
constitutes
basis
successfully
commercialized
bead-based
immunoassays.
Herein,
we
propose
novel
approach
enhancement
such
conventional
via
incorporation
second
metal
coordination
complex,
[Ir(sppy)3]3–
(where
sppy
=
5′-sulfo-2-phenylpyridinato-C2,N),
experimental
system.
By
microscopy,
able
map
spatial
distribution
emission
at
surface
bead,
from
[Ru(bpy)3]2+
labels,
solution-phase
emission,
[Ir(sppy)3]3–.
The
developed
[Ir(sppy)3]3–-mediated
elicited
significant
improvement
(70.9-fold
0.9
V
2.9-fold
1.2
vs
Ag/AgCl)
signal
labels
immobilized
on
polystyrene
bead.
dramatic
in
signal,
particularly
low
oxidation
potentials,
has
important
implications
for
existing
heterogeneous
ECL-based
by
amplifying
opening
new
bioanalytical
detection
schemes,
reducing
both
electrode
passivation
deleterious
side
reactions.
Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
96(10), P. 4067 - 4075
Published: Feb. 29, 2024
In
this
work,
an
electrochemiluminescence
(ECL)
quenching
system
using
multimetal–organic
frameworks
(MMOFs)
was
proposed
for
the
sensitive
and
specific
detection
of
heart-type
fatty
acid-binding
protein
(H-FABP),
a
marker
acute
myocardial
infarction
(AMI).
Bimetallic
MOFs
containing
Ru
Mn
as
metal
centers
were
synthesized
via
one-step
hydrothermal
method,
yielding
RuMn
ECL
emitter.
The
not
only
possessed
strong
performance
Ru(bpy)32+
but
also
maintained
high
porosity
original
active
sites
characteristic
MOFs.
Moreover,
under
synergistic
effect
Ru(bpy)32+,
have
more
efficient
stable
emission.
trimetal-based
MOF
(FePtRh
MOF)
used
quencher
because
electron
transfer
between
FePtRh
addition,
intramolecular
from
Pt
to
Fe
or
Rh
atoms
occurred
in
MOFs,
which
could
promote
intermolecular
improve
efficiency
enhance
efficiency.
immunosensor
demonstrated
wide
dynamic
range
low
limit
0.01–100
ng
mL–1
6.8
pg
mL–1,
respectively,
optimal
conditions.
presented
good
specificity,
stability,
reproducibility.
Therefore,
alternative
method
H-FABP
clinical
diagnosis
provided
by
study,
highlighting
potential
MMOFs
advancing
technology.
Electrochimica Acta,
Journal Year:
2024,
Volume and Issue:
484, P. 143957 - 143957
Published: Feb. 14, 2024
Enhancement
of
the
electrochemiluminescence
(ECL)
tris(2,2′-bipyridine)ruthenium(II)
([Ru(bpy)3]2+)
and
tri-n-propylamine
by
redox
mediators
has
emerged
as
a
new
approach
to
maximise
sensitivity
this
mode
detection.
Herein,
we
examine
influence
six
water-soluble
iridium(III)
complexes
on
widely
used
ECL
system
deconvoluting
their
respective
contributions
overall
intensity
over
range
applied
potentials.
The
interconnected
co-reactant
these
metal
complexes,
eliciting
enhancement
or
quenching
[Ru(bpy)3]2+
emission,
can
be
understood
considering
available
reaction
pathways
under
different
conditions
disparate
electrochemical
photophysical
properties
reactants.
ideal
for
are
established,
which
will
inform
future
design
application
in
system.
The Journal of Organic Chemistry,
Journal Year:
2023,
Volume and Issue:
88(10), P. 6445 - 6453
Published: Jan. 11, 2023
Sacrificial
additives
are
commonly
employed
in
photoredox
catalysis
as
a
convenient
source
of
electrons,
but
what
occurs
after
electron
transfer
is
often
overlooked.
Tertiary
alkylamines
initially
form
radical
cations
following
transfer,
which
readily
deprotonate
to
strongly
reducing,
neutral
α-amino
radicals.
Similarly,
the
oxalate
anion
(C2O4•-)
rapidly
decomposes
CO2•-
(E0
≈
-2.2
V
vs
SCE).
We
show
that
not
only
these
reactive
intermediates
formed
under
conditions,
they
can
also
impact
desired
photochemistry,
both
positively
and
negatively.
Photoredox
systems
using
an
donor
able
engage
substrates
with
greater
energy
demands,
extending
reactivity
past
limits
single
multiphoton
transition
metal
catalysts.
Furthermore,
offers
better
chemoselectivity
than
triethylamine
when
reducing
moderate
requirements.
Analytical Chemistry,
Journal Year:
2023,
Volume and Issue:
95(36), P. 13596 - 13604
Published: Aug. 29, 2023
Metal
oxide
nanomaterials
have
garnered
significant
attention
in
the
field
of
electrochemiluminescence
(ECL)
sensing
due
to
their
efficient,
stable,
and
nontoxic
properties.
However,
current
research
on
metal
has
primarily
focused
cathodic
luminescence
properties,
with
limited
reports
anodic
ECL
In
this
study,
we
utilized
MOF-derived
ZrO2
as
luminophores
generate
stable
signals
presence
coreactant
tripropylamine
(TPrA).
Additionally,
a
signal-enhancing
immunosensor
was
developed
analyze
D-dimer
by
incorporating
coreaction
accelerator
Cu-doped
TiO2
(TiO2–Cu).
The
synthesized
calcining
UiO-67
demonstrated
nontoxicity
biocompatibility,
exhibiting
efficient
emission
TPrA
solution.
inclusion
TiO2–Cu
resulted
formation
ternary
system
ZrO2/TiO2–Cu/TPrA.
Cu
doping
effectively
narrowed
bandgap
enhanced
its
conductivity.
As
substrate,
reacted
more
TPrA,
generating
sufficient
free
radicals
enhance
signal
ZrO2.
article,
short
peptide
ligand,
NFC
(NARKFYKGC),
designed
immobilize
antibodies
maintain
activity
antigen-binding
sites
during
construction
immunosensor.
used
for
accurate
detection
D-dimers,
wide
linear
range
0.05–600
ng/mL
low
limit
21
pg/mL..
Chemical Science,
Journal Year:
2023,
Volume and Issue:
15(3), P. 1150 - 1158
Published: Dec. 19, 2023
Redox
mediated
mechanism
in
electrochemiluminescence
(ECL)
beads-based
assay:
the
influence
of
Ir(
iii
)
redox
mediators
increases
ECL
signal
up
to
107%.
