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.
Chemical Communications,
Год журнала:
2024,
Номер
60(36), С. 4846 - 4849
Опубликована: Янв. 1, 2024
We
developed
two
novel
stable
luminescent
radical
skeletons,
BnBTM
and
bisBnTM,
demonstrating
lower
frontier
orbital
energy
levels
suppressed
nonradiative
transition
processes
than
the
previously
reported
skeletons.
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(11), С. 3316 - 3322
Опубликована: Янв. 1, 2024
A
radiochromic
semiconductor
detector
for
dual-mode
direct
X-ray
detection,
showing
rapid
color
changes
and
high
sensitivity
upon
exposure,
is
reported.
This
allows
quickly
capturing
object
information
through
visual
inspection
serves
as
an
alternative
means
of
detection.
Inorganic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 19, 2024
Although
metal
halide-based
X-ray
scintillators
have
obtained
significant
development
with
adjustable
radioluminescent
spectral
range,
the
red
light-emitting
scintillator
has
been
sparsely
reported
and
remains
a
great
challenge
until
now.
To
remedy
this
research
blank,
we
investigated
scintillating
property
of
light-emissive
one-dimensional
(1D)
organic
manganese
halide
(MBIZ)(MnCl
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 16, 2024
Organic
phosphorescence
or
thermally
activated
delayed
fluorescence
(TADF)
scintillators,
while
effective
in
utilizing
triplet
excitons,
are
sensitive
to
temperature
changes,
which
can
impact
radioluminescence
performance.
In
this
study,
we
have
developed
a
type
of
temperature-adaptive
organic
scintillator
with
and
TADF
dual
emission.
These
scintillators
automatically
switch
modes
enabling
efficient
from
77
400
K.
The
highest
photoluminescence
quantum
yield
light
83.2%
78,229
±
562
photons
MeV
Angewandte Chemie,
Год журнала:
2024,
Номер
136(25)
Опубликована: Апрель 18, 2024
Abstract
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
4
:Mn
2+
/Gd
3+
nanocrystal
sublattices
through
Gd
‐driven
microenvironment
engineering
Mn
‐mediated
profiling.
Our
photophysical
studies
reveal
effective
control
demonstrate
the
tunability
electron
trap
depth
ranging
0.66
0.96
eV,
with
corresponding
density
varying
between
2.38×10
5
1.34×10
7
cm
−3
.
This
enables
controlled
release
captured
electrons
over
durations
spanning
seconds
30
days.
It
allows
tailorable
emission
wavelength
within
range
520–580
nm
fine‐tuning
thermally‐stimulated
temperature
313–403
K.
We
further
utilize
fabricate
high‐density,
large‐area
scintillation
screens
that
exhibit
6‐fold
improvement
sensitivity,
22
lp/mm
high‐resolution
imaging,
30‐day‐long
optical
memory.
high‐contrast
imaging
injured
mice
fast
readout.
These
findings
offer
new
insights
into
correlation
dynamics
kinetics,
thereby
contributing
advancement
high‐energy
nanophotonic
applications.
We
synthesized
a
series
of
polychlorinated
trityl
radical
substituted
phenylphosphines.
Through
UV–vis
photoluminescence
(PL)
spectroscopy
and
cyclic
voltammetry,
we
explored
the
influence
chemical
modifications
(oxidation/reduction,
coordination,
methylation)
phosphorus
center(s)
on
tuning
optical
redox
properties
tris(2,4,6-trichlorophenyl)methyl
(TTM)
framework.
Those
compounds
hold
promise
for
applications
in
coordination
chemistry
luminescent
materials,
particularly
systems
where
both
phosphine-based
functionalities
can
be
leveraged
innovative
properties.
The Journal of Chemical Physics,
Год журнала:
2025,
Номер
162(6)
Опубликована: Фев. 10, 2025
Light-emitting
molecules
have
been
extensively
studied
due
to
their
potential
and
wide
variety
of
applications
from
optoelectronic
devices
biomedical
applications.
To
fully
understand
rationalize
the
light-emitting
process
for
innovation
next-generation
applications,
it
is
vital
reveal
dynamic
behavior
excitons,
where
excited
electronic
states
(locally
excited,
charge
transfer,
separated
states),
spin
multiplicity,
motion
atomic
nucleus
are
interacting
each
other.
Here,
we
will
show
our
recent
progress
on
systems
developed
under
“Dynamic
Exciton”
project
in
Japan.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 21, 2025
Abstract
Scintillators
play
a
crucial
role
in
the
fields
of
radiation
detection
and
imaging,
but
it
is
formidable
challenge
to
meet
demands
for
large
size,
high
light
yield,
fast
response
simultaneously.
To
tackle
this
challenge,
work
interprets
key
polymer
matrix
customizing
overall
performance
organic
scintillator
from
underlying
logic.
Owing
this,
plastic
scintillators
Tetra(p‐bromophenyl)ethene@Poly(vinyltoluene)
(TPE‐4Br@PVT),
are
successfully
prepared
using
an
amorphous
conjugated
PVT
situ
polymerization
process.
This
features
ultra‐large
size
(≈191
cm
3
),
ultrafast
decay
time
(1.66/5.26
ns),
decent
yield
(14
443
photons·MeV
−1
).
It
not
only
achieves
X‐ray
imaging
resolution
13.9
lp·mm−
1
(lp:
line
pairs)
also
record‐breaking
neutron
2.03
,
showcasing
great
potential
applications.
