Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 20, 2025
Abstract
Organic
luminescent
radicals
possess
considerable
potential
for
applications
in
organic
light‐emitting
diodes
(OLEDs)‐based
visible
light
communication
owing
to
their
intrinsic
advantages
of
nanosecond
emission
lifetimes
and
spin‐allowed
radiative
transitions.
However,
the
inherently
narrow
energy
bandgap
multiple
nonradiative
channels
make
it
difficult
achieve
efficient
green
blue
light‐emitting,
which
is
not
conducive
applying
diverse
fields.
In
this
study,
a
series
carbon‐centered
derived
from
N‐heterocyclic
carbenes
are
designed
synthesized,
some
exhibiting
hybrid
local
charge‐transfer
(HLCT)
states
that
resulting
emission.
The
results
photophysical
characterizations
theoretical
calculations
demonstrate
luminescence
efficiency
closely
related
states.
This
relationship
inhibits
while
simultaneously
opening
HLCT
but
those
with
locally
excited
Intriguingly,
high
photoluminescence
quantum
yield
value
up
70.1%
at
534
nm
observed,
highest
among
reported
date.
Based
on
exceptional
result,
an
OLED
device
fabricated
achieved
external
8.8%.
These
its
application
electroluminescent
devices.
Advanced Materials,
Год журнала:
2024,
Номер
36(32)
Опубликована: Июнь 12, 2024
Abstract
Thermo‐responsive
smart
materials
have
aroused
extensive
interest
due
to
the
particular
significance
of
temperature
sensing.
Although
various
photoluminescent
are
explored
in
thermal
detection,
it
is
not
applicable
enough
X‐ray
radiation
environment
where
accuracy
and
reliability
will
be
influenced.
Here,
a
strategy
proposed
by
introducing
concept
radio‐luminescent
functional
building
units
(RBUs)
construct
thermo‐responsive
lanthanide
metal‐organic
frameworks
(Ln‐MOFs)
scintillators
for
self‐calibrating
thermometry.
The
rational
designs
RBUs
(including
organic
ligand
Tb
3+
/Eu
)
with
appropriate
energy
levels
lead
high‐performance
radio‐luminescence.
Ln‐MOFs
exhibit
perfect
linear
response
X‐ray,
presenting
low
dose
rate
detection
limit
(min
≈156.1
nGy
air
s
‐1
).
Self‐calibrating
based
on
ratiometric
XEL
intensities
achieved
good
absolute
relative
sensitivities
6.74
8.1%K
,
respectively.
High
light
yield
(max
≈39000
photons
MeV
−1
),
imaging
spatial
resolution
≈18
lp
mm
irradiation
stability
(intensity
≈100%
at
368
K
total
up
215
Gy
giant
color
transformation
visualization
benefit
applications,
especially
situ
imaging.
Such
provides
promising
way
develop
novel
photonic
excellent
scintillator
performances.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(20)
Опубликована: Фев. 28, 2024
Abstract
Thermally
activated
delayed
fluorescence
(TADF)
emitters
featuring
through‐space
charge
transfer
(TSCT)
can
be
excellent
candidates
for
piezochromic
luminescent
(PCL)
materials
due
to
their
structural
dynamics.
Spatial
donor‐acceptor
(D−A)
stacking
arrangements
enable
the
modulation
of
inter‐
and
intramolecular
D−A
interactions,
as
well
spatial
states,
under
varying
pressure
conditions.
Herein,
we
demonstrate
an
effective
approach
toward
dynamic
reversible
full‐color
PCL
with
TSCT‐TADF
characteristics.
Their
single
crystals
exhibit
a
full‐color‐gamut
process
spanning
range
170
nm.
Moreover,
TSCT‐TADF‐PCL
display
unity
photoluminescence
quantum
yield,
show
promising
application
in
X‐ray
scintillator
imaging.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(18)
Опубликована: Март 2, 2024
Abstract
Organic
scintillators
have
recently
attracted
growing
attention
for
X‐ray
detection
in
industrial
and
medical
applications.
However,
these
materials
still
face
critical
obstacles
of
low
attenuation
efficiency
and/or
inefficient
triplet
exciton
utilization.
Here
we
developed
a
new
category
organogold(III)
complexes,
Tp‐Au‐1
Tp‐Au‐2
,
through
adopting
through‐space
interaction
motif
to
realize
high
efficient
harvesting
excitons
emission.
Thanks
the
charge
transfer
process,
this
panel
complexes
achieved
higher
photoluminescence
quantum
yield
shorter
radiative
lifetimes
compared
with
through‐bond
reference
complexes.
Inspiringly,
exhibited
polarity‐dependent
emission
origins:
thermally
activated
delayed
fluorescence
phosphorescence.
Under
irradiation,
manifested
intense
radioluminescence
together
record‐high
scintillation
light
77,600
photons
MeV
−1
organic
scintillators.
The
resulting
scintillator
screens
demonstrated
high‐quality
imaging
>16.0
line
pairs
mm
spatial
resolution,
outstripping
most
inorganic
This
finding
provides
feasible
strategy
design
superior
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(24), С. 16458 - 16468
Опубликована: Май 16, 2024
The
efficacy
of
photodynamic
therapy
is
hindered
by
the
hypoxic
environment
in
tumors
and
limited
light
penetration
depth.
singlet
oxygen
battery
(SOB)
has
emerged
as
a
promising
solution,
enabling
oxygen-
light-independent
1O2
release.
However,
conventional
SOB
systems
typically
exhibit
an
"always-ON"
release,
leading
to
potential
leakage
before
after
treatment.
This
not
only
compromises
therapeutic
outcomes
but
also
raises
substantial
biosafety
concerns.
In
this
work,
we
introduce
programmable
battery,
engineered
address
all
issues
discussed
above.
concept
illustrated
through
development
tumor-microenvironment-responsive
pyridone–pyridine
switch,
PyAce,
which
exists
two
tautomeric
forms:
PyAce-0
(pyridine)
PyAce
(pyridone)
with
different
storage
half-lives.
its
native
state,
remains
pyridone
form,
capable
storing
(t1/2
=
18.5
h).
Upon
reaching
tumor
microenvironment,
switched
pyridine
facilitating
rapid
thorough
release
16
min),
followed
quenched
post-therapy.
mechanism
ensures
suppressed
production
pre-
post-therapy
selective
at
site,
maximizing
while
minimizing
side
effects.
achieved
"OFF–ON–OFF"
showed
high
spatiotemporal
selectivity
was
independent
supply
illumination.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(46)
Опубликована: Июль 5, 2024
Organic
scintillators
are
praised
for
their
abundant
element
reserves,
facile
preparation
procedures,
and
rich
structures.
However,
the
weak
X-ray
attenuation
ability
low
exciton
utilization
efficiency
result
in
unsatisfactory
scintillation
performance.
Herein,
a
new
family
of
highly
efficient
organic
phosphonium
halide
salts
with
thermally
activated
delayed
fluorescence
(TADF)
designed
by
innovatively
adopting
quaternary
as
electron
acceptor,
while
dimethylamine
group
anions
(I
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(25)
Опубликована: Апрель 18, 2024
Long-lasting
radioluminescence
scintillators
have
recently
attracted
substantial
attention
from
both
research
and
industrial
communities,
primarily
due
to
their
distinctive
capabilities
of
converting
storing
X-ray
energy.
However,
determination
energy-conversion
kinetics
in
these
nanocrystals
remains
unexplored.
Here
we
present
a
strategy
probe
unveil
energy-funneling
NaLuF
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Июль 16, 2024
Abstract
Dual
emission
(DE)
in
nanoclusters
(NCs)
is
considerably
significant
the
research
and
application
of
ratiometric
sensing,
bioimaging,
novel
optoelectronic
devices.
Exploring
DE
mechanism
open-shell
NCs
with
doublet
or
quartet
emissions
remains
challenging
because
synthesizing
difficult
due
to
their
inherent
instability.
Here,
we
synthesize
two
dual-emissive
M
1
Ag
13
(PFBT)
6
(TPP)
7
(M
=
Pt,
Pd;
PFBT
pentafluorobenzenethiol;
TPP
triphenylphosphine)
a
7-electron
configuration
reveal
mechanism.
Both
comprise
crown-like
11
kernel
Pt
Pd
center
surrounded
by
five
PPh
3
ligands
Ag(SR)
(PPh
)
motifs.
The
combined
experimental
theoretical
studies
revealed
origin
.
Specifically,
high-energy
visible
low-energy
near-infrared
arise
from
distinct
excited
states:
core-shell
charge
transfer
core-based
states,
respectively.
Moreover,
are
found
play
an
important
role
existence
DE,
as
its
low-lying
π
*
levels
result
energetically
accessible
transitions.
This
report
on
dual-quartet
phosphorescent
electronic
advances
insights
into
promotes
potential
magnetoluminescence
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 10, 2025
Layered
hybrid
metal
halide
perovskites,
characterized
by
their
distinctive
quantum
well
structures
and
significant
exciton
binding
energies,
exhibit
exceptional
fluorescence
properties,
rendering
them
ideal
candidates
for
high
light
yield
scintillators.
However,
challenges
remain
in
synthesizing
layered
perovskites
with
photoluminescence
yields
(PLQY),
large
Stokes
shifts,
stable
radioluminescence
(RL).
In
this
study,
a
Mn(II)-doped
perovskite
was
successfully
synthesized.
Structural
rigidity
is
largely
enhanced
the
unique
carboxylic
acid
dimers,
as
result
reducing
nonradiative
recombination
induced
stretching
vibration.
Mn(II)
doping
into
(HOOC6H10NH3)2PbBr4
allows
efficient
energy
transfer,
which
optimizes
luminescence
performance.
The
effects
of
self-absorption
are
almost
eliminated
shift
doping.
4T1g-6A1g
transition
induces
pronounced
orange-red
emission
at
613
nm,
PLQY
significantly
increasing
from
14.76%
to
64.24%.
Additionally,
scintillator
demonstrates
an
outstanding
28,600
photons/MeV
low
detection
limit
100.8
nGyair/s,
maintaining
stability
under
continuous
X-ray
exposure.
These
properties
render
it
applications
luminescent
devices