Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 24, 2024
Abstract
Mn‐based
metal
halides
scintillators
with
high
photoluminescence
quantum
yield
(PLQY)
have
recently
emerged
as
promising
large‐size
candidates
for
X‐ray
imaging
but
still
remains
difficult
challenge
in
stability
and
processing
temperatures.
Here,
three
manganese
are
designed
by
introducing
branched
chains
into
organic
cations
extending
the
carbon
chains,
namely
(i‐PrTPP)
2
MnBr
4
,
(i‐BuTPP)
(i‐AmTPP)
successfully
lowered
melting
point
of
to
120.2
°C.
Three
materials
show
striking
light
yields
59
000,
40
52
000
photons
MeV
−1
respectively.
The
lowest
detection
limits
42.30,
50.92,
45.71
nGy
s
Meanwhile,
compared
their
counterparts
linear
introduction
has
significantly
enhanced
glass
state.
A
transparent
been
prepared
using
a
melt‐quenching
method,
which
exhibited
80%
transmittance
at
400–700
nm.
is
utilized
imaging,
achieving
spatial
resolution
up
46.6
lp
mm
.
This
result
provides
new
approach
enhancing
performance
such
scintillator
materials.
Dalton Transactions,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Three
novel
organic–inorganic
hybrids
exhibit
increased
phase
transition
temperatures
and
distinct
temperature-dependent
fluorescence
quenching
by
progressive
organic
group
substitution.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 3, 2025
Abstract
Optimizing
charge
carrier
storage
in
trap‐controlled
halide
perovskites
poses
a
significant
challenge,
particularly
due
to
the
varying
electronic
properties
and
trap
dynamics
across
temperature
range
from
≈100
400
K.
This
dependence
affects
both
efficiency
of
generation
their
retention.
In
this
study,
substantial
advancements
performance
zirconium
stannum
are
reported
through
targeted
defect
engineering.
By
modulating
composition
Cs
2
Sn
1‐x
Zr
x
Cl
6
incorporating
dopants
Cr
3+
,
Ga
Bi
Te
4+
remarkable
enhancements
X‐ray
triggered
capacity
realized.
Notably,
ZrCl
doped
with
or
exhibits
three
fold
increase
100
300
K,
significantly
outperforming
state‐of‐the‐art
BaFBr(I):Eu
2+
red
afterglow
Y
O
S:Eu
phosphor.
The
:yTe
demonstrates
over
40
times
greater
wide
K
achieves
low
detection
limit
99.16
nGy
for
dosimetry
applications.
Furthermore,
:0.03Te
exceptional
persistent
luminescence
lasting
14
h
at
180
295
research
underscores
high‐performance
capabilities
engineered
perovskites,
paving
way
application
advanced
technologies
temperatures.
Advanced Optical Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 4, 2025
Abstract
Low‐dimensional
metal
halides
have
emerged
as
promising
anti‐counterfeiting
materials.
However,
achieving
a
multi‐mode
and
multi‐color
system
in
remains
challenging.
In
this
study,
copper‐halide
(TBP)
2
Cu
4
Br
6
(TBP
+
=
C
16
H
36
P
)
single
crystals
are
synthesized
using
cooling
crystallization
method,
which
exhibits
efficient
dual‐band
emissions
(542
708
nm),
large
Stokes
shifts
(282
330
high
photoluminescence
quantum
yield
(PLQY)
of
92.7%
for
542
nm.
These
exceptional
properties
attributed
to
the
unique
0D
structure
crystals,
facilitates
formation
two
different
self‐trapped
excitons
(STEs).
Furthermore,
based
on
,
digital
integrated
is
designed
with
Morse
code
information
encryption,
demonstrating
applications
security
anti‐counterfeiting.
This
work
not
only
illustrates
an
emitter
copper
but
also
paves
way
systems.
Molecules,
Journal Year:
2025,
Volume and Issue:
30(6), P. 1319 - 1319
Published: March 14, 2025
The
reaction
between
the
iminophosphorane
ligand
N-phenyl-1,1,1-triphenylphosphanimine
(NPh=PPh3)
and
anhydrous
manganese(II)
halides
allowed
isolation
of
complexes
with
general
formula
[MnX2(NPh=PPh3)2]
(X
=
Cl,
Br,
I).
compounds
showed
luminescence
in
green
region
attributed
to
4T1(4G)→6A1(6S)
transition
metal
centre
tetrahedral
field,
which
was
superimposed
cases
X
Cl
Br
on
weak
ligand-centred
fluorescence.
emission
excitation
spectra
were
compared
those
free
related
zinc(II)
bromo-complex.
DFT
calculations
bromo-complex
helped
rationalise
experimental
data.
protonation
NPh=PPh3
led
formation
iminium
cation
[NHPh=PPh3]+,
used
as
a
building
block
for
synthesis
organic–inorganic
hybrids
[NHPh=PPh3]2[MnX4]
crystal
structure
[NHPh=PPh3]2[MnBr4]
determined
by
means
X-ray
diffraction.
Green
photoluminescence
associated
metal-centred
also
observed
hybrids,
higher
quantum
yields
respect
neutral
complexes.
In
case
I,
from
that
tetraiodomanganate
anion
upon
compound
near–UV
light.
Advanced Optical Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 2, 2025
Abstract
Lanthanide
ion
(Ln
3+
)‐doped
lead‐free
perovskites
with
near‐infrared
(NIR)
luminescence
have
promising
application
prospects
in
environmentally
friendly
photonic
devices.
It
remains
a
challenge
to
enhance
the
photoluminescence
quantum
yield
(PLQY)
of
Ln
‐doped
due
their
poor
light
absorption
and
low
energy
transfer
efficiency.
Herein,
highly
efficient
NIR
emission
is
achieved
through
co‐doping
Yb
Bi
CsMnCl
3
perovskites.
Theoretical
experimental
results
demonstrated
that
attributed
additional
intense
absorptions
at
330
nm
local
symmetry
breaking
lattice
upon
ions,
which
optimize
process
between
‐Mn
2+
‐Yb
.
The
PLQY
optimized
:
/Yb
emitter
reaches
59.8%
under
UV
excitation,
highest
reported
value
among
Furthermore,
benefiting
from
Mn
visible
region,
can
also
be
excited
using
low‐energy
sources,
providing
general
strategy
unlock
excitable
emitters.
Based
on
its
excellent
luminescent
properties,
perovskite
has
versatile
fields
such
as
latent
fingerprint
detection,
night
vision,
biological
imaging.
