The Journal of Physical Chemistry Letters,
Journal Year:
2024,
Volume and Issue:
15(44), P. 11104 - 11111
Published: Oct. 30, 2024
Electrochemiluminescence
(ECL)
is
an
extensively
studied
luminescence
technique
recognized
for
its
efficacy
in
investigating
surface
energy
states.
Effective
utilization
of
ECL
to
explore
and
probe
the
charge
transfer
mechanisms
facilitated
by
novel
luminescent
materials
crucial.
In
this
study,
we
demonstrate
thermally
activated
delayed
fluorescence
(TADF)
based
on
spatial
through
precisely
controlled
synthesis
materials,
which
achieved
incorporating
phenyl-carbazole
derivatives
as
donor
guests
within
acceptor-hosted
metal–organic
frameworks
(D-A
MOFs).
These
hybrid
structures
exhibit
superior
intensities
compared
with
their
monomeric
counterparts.
Mechanistic
investigation
DFT
calculation
reveals
that
physically
separated
yet
spatially
closed
D-A
configuration
induces
efficient
intermolecular
through-spatial
(TSCT),
leading
tuning
dihedral
angle
guest
molecules
enhance
π–π
interactions.
This
study
introduces
a
strategy
precise
modulation
at
molecular
level
programmable
luminophores.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(42), P. 57649 - 57658
Published: Oct. 9, 2024
Although
covalent
organic
frameworks
(COFs)
accompanied
by
electrochemiluminescence
(ECL)
behavior
have
been
introduced
in
recent
years,
they
are
still
rarely
applied
for
ECL-based
enantioselective
sensing,
especially
giving
high
recognition
efficiency.
In
the
current
study,
an
achiral
ionic
COF
comprised
of
pyridinium
unit
is
synthesized
linkage
carbon–nitrogen
cation
bond
through
Zincke
reaction.
Interestingly,
can
generate
clear
ECL
owing
to
presence
electroactive
species.
Then,
ECL-active
employed
absorb
chiral
Co(III)
complex
sensing.
As
a
result,
developed
sensor
displays
discriminative
responses
toward
amino
alcohol
enantiomers.
When
with
(R)-configuration
used,
examined
(S)-amino
alcohols
result
enhancement,
whereas
(R)-amino
lead
quenching.
The
maximum
intensity
ratio
between
(S)-
and
up
47.7.
addition,
mechanism
investigated
detail.
Finally,
good
linear
relation
enantiomeric
composition
appropriate
accurate
analysis
purities
unknown
samples.
short,
we
believe
that
this
study
constructs
effective
strategy
combine
respective
advantages
COFs
high-efficiency
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(17)
Published: March 5, 2024
Abstract
Electrochemiluminescence
(ECL)
efficiency
is
determined
by
charge
transfer
between
coreactants
and
emitters
in
coreactant
systems,
which
are
usually
limited
their
slow
intermolecular
transfer.
In
this
study,
a
covalent
organic
framework
(COF)
with
aldehyde
residue
was
synthesized,
then
were
covalently
integrated
into
the
skeleton
through
postsynthetic
modification
strategy,
resulting
crystalline
coreactant‐embedded
COF
nanoemitter
(C–COF).
Compared
to
pristine
an
equivalent
external
coreactant,
C–COF
exhibited
extraordinary
1008‐fold
enhancement
of
ECL
intensity
due
rapid
intrareticular
Significantly,
pH
increase,
shows
protonation‐induced
for
first
peaked
at
+1.1
V
opposite
trend
second
+1.4
V,
attributed
antedating
oxidation
self‐oxidation,
respectively.
The
bimodal
mechanism
rationalized
spectral
characterization
density
functional
theory
calculations.
nanoemitters
present
innovative
universal
avenues
advancing
systems.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(14), P. 15958 - 15967
Published: July 16, 2024
Tetraphenylene
(TPE)
and
its
derivatives
are
highly
studied
materials
in
the
field
of
aggregation-induced
electrochemiluminescence
(AIECL).
We
successfully
synthesized
a
block-like
metal–organic
framework
by
employing
Zn2+
TPE-based
ligand
H8ETTB
(H8ETTB
=
4′,4‴,4‴″,4‴‴′-(ethene-1,1,2,2-tetrayl)
tetrakis
(([1,1′-biphenyl]-3,5-dicarboxylic
acid))),
which
demonstrates
excellent
ECL
properties.
For
simplicity,
we
refer
to
this
material
as
Zinc-based
(Zn-MOF).
is
luminophore,
increasing
loading
luminophore.
The
Zn-MOF
exhibits
considerable
specific
surface
area
porous
structure,
enables
efficient
reaction
between
luminophores
coreactants,
resulting
ECL.
emission
more
intense
than
that
monomer
aggregates.
Due
distinctive
characteristics
Zn-MOF,
employed
it
an
luminophore
immunoassay,
establishment
system
for
extremely
sensitive
detection
5-fluorouracil.
PdAu
nanoflowers
(PdAu
NFs)
were
utilized
electrodes,
modified
because
their
electrocatalytic
efficiency.
As
result,
they
additionally
improved
performance.
design
immunosensor
relatively
straightforward,
facilitating
manufacture.
Furthermore,
was
tested
human
serum
samples,
demonstrating
comparable
results
those
obtained
using
high-performance
liquid
chromatography
with
tandem
mass
spectrometry
(HPLC-MS/MS).
This
research
thus
offers
practical
method
enhance
performance
introduces
approach
identifying
5-FU
clinical
analysis.
The Journal of Physical Chemistry Letters,
Journal Year:
2024,
Volume and Issue:
15(44), P. 11104 - 11111
Published: Oct. 30, 2024
Electrochemiluminescence
(ECL)
is
an
extensively
studied
luminescence
technique
recognized
for
its
efficacy
in
investigating
surface
energy
states.
Effective
utilization
of
ECL
to
explore
and
probe
the
charge
transfer
mechanisms
facilitated
by
novel
luminescent
materials
crucial.
In
this
study,
we
demonstrate
thermally
activated
delayed
fluorescence
(TADF)
based
on
spatial
through
precisely
controlled
synthesis
materials,
which
achieved
incorporating
phenyl-carbazole
derivatives
as
donor
guests
within
acceptor-hosted
metal–organic
frameworks
(D-A
MOFs).
These
hybrid
structures
exhibit
superior
intensities
compared
with
their
monomeric
counterparts.
Mechanistic
investigation
DFT
calculation
reveals
that
physically
separated
yet
spatially
closed
D-A
configuration
induces
efficient
intermolecular
through-spatial
(TSCT),
leading
tuning
dihedral
angle
guest
molecules
enhance
π–π
interactions.
This
study
introduces
a
strategy
precise
modulation
at
molecular
level
programmable
luminophores.
