Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(26)
Published: April 18, 2024
Abstract
Ultraviolet
circularly
polarized
luminescence
(UV‐CPL)
with
high
photon
energy
shows
great
potential
in
light
sources
and
stereoselective
photopolymerization.
However,
developing
luminescent
materials
UV‐CPL
performance
remains
challenging.
Here,
we
report
a
pair
of
rare
earth
Ce
3+
‐based
zero‐dimensional
(0D)
chiral
hybrid
metal
halides
(HMHs),
R/S
‐(C
14
H
24
N
2
)
CeBr
7
,
which
exhibits
characteristic
UV
emissions
derived
from
the
5d–4f
transition.
The
compounds
show
simultaneously
photoluminescent
quantum
yields
(32–39)%
large
dissymmetry
factor
(|g
lum
|)
values
(1.3–1.5)×10
−2
.
Thus,
figures
merits
are
calculated
to
be
(4.5–5.8)×10
−3
superior
reported
emissive
materials.
Additionally,
nearly
91
%
their
PL
intensities
at
300
K
can
well
preserved
380
(LED
operating
temperature)
without
phase
transition
or
decomposition,
demonstrating
excellent
structural
optical
thermal
stabilities
Based
on
these
enantiomers,
fabricated
UV‐emitting
CP‐LEDs
exhibit
polarization
degrees
±1.0
%.
Notably,
generated
devices
significantly
trigger
enantioselective
photopolymerization
diacetylene
remarkable
stereoselectivity,
consequently
yield
polymerized
products
anisotropy
factors
circular
dichroism
(g
CD
up
±3.9×10
outperforming
other
as
UV‐polarized
sources.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(21)
Published: Feb. 10, 2024
Abstract
The
exacerbation
of
inherent
light
scattering
with
increasing
scintillator
thickness
poses
a
major
challenge
for
balancing
the
thickness‐dependent
spatial
resolution
and
scintillation
brightness
in
X‐ray
imaging
scintillators.
Herein,
thick
pixelated
needle‐like
array
capable
micrometer
is
fabricated
via
waveguide
structure
engineering.
Specifically,
this
involves
integrating
straightforward
low‐temperature
melting
process
manganese
halide
an
aluminum‐clad
capillary
template.
In
structure,
oriented
photons
propagate
along
well‐aligned
are
confined
within
individual
pixels
by
aluminum
reflective
cladding,
as
substantiated
from
comprehensive
analysis
including
laser
diffraction
experiments.
Consequently,
thanks
to
isolated
light‐crosstalk
channels
robust
output
due
increased
thickness,
ultrahigh
resolutions
60.8
51.7
lp
mm
−1
at
modulation
transfer
function
(MTF)
0.2
achieved
on
0.5
even
1
scintillators,
respectively,
which
both
exceed
pore
diameter
arrays’
template
(
Φ
=
10
µm).
As
far
it
known,
these
among
highest
reported
metal
scintillators
never
demonstrated
such
Here
avenue
presented
demand
high‐resolution
across
diverse
scientific
practical
fields.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(24)
Published: April 12, 2024
Chiral
hybrid
metal
halides
hold
great
potential
as
circularly
polarized
luminescence
light
sources.
Herein,
we
have
obtained
two
enantiomeric
pairs
of
one-dimensional
chiral
manganese(II)
chloride
single
crystals,
R/S-(3-methyl
piperidine)MnCl
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 5, 2024
Organic-inorganic
hybrid
manganese(II)
halides
(OIMnHs)
have
garnered
tremendous
interest
across
a
wide
array
of
research
fields
owing
to
their
outstanding
optical
properties,
abundant
structural
diversity,
low-cost
solution
processibility,
and
low
toxicity,
which
make
them
extremely
suitable
for
use
as
new
class
luminescent
materials
various
optoelectronic
applications.
Over
the
past
years,
plethora
OIMnHs
with
different
dimensionalities
multifunctionalities
such
efficient
photoluminescence
(PL),
radioluminescence,
circularly
polarized
luminescence,
mechanoluminescence
been
newly
created
by
judicious
screening
organic
cations
inorganic
Mn(II)
polyhedra.
Specifically,
through
precise
molecular
engineering,
series
near-unity
PL
quantum
yields,
high
anti-thermal
quenching
excellent
stability
in
harsh
conditions
devised
explored
applications
light-emitting
diodes
(LEDs),
X-ray
scintillators,
multimodal
anti-counterfeiting,
fluorescent
sensing.
In
this
review,
latest
advancements
development
are
summarized,
covers
from
fundamental
physicochemical
properties
advanced
applications,
an
emphasis
on
functionality
design
especially
LEDs
detection
imaging.
Current
challenges
future
efforts
unlock
potentials
these
promising
also
envisioned.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(32)
Published: May 13, 2024
Abstract
Circularly
polarized
luminescence
(CPL)
is
promising
for
applications
in
many
fields.
However,
most
systems
involving
CPL
are
within
the
visible
range;
near‐infrared
(NIR)
CPL‐active
materials,
especially
those
that
exhibit
high
g
lum
values
and
can
be
controlled
spatially
temporally,
rare.
Herein,
dynamic
NIR‐CPL
with
a
value
of
2.5×10
−2
was
achieved
through
supramolecular
coassembly
energy‐transfer
strategies.
The
chiral
assemblies
formed
by
between
adenosine
triphosphate
(ATP)
pyrene
derivative
exhibited
red
signal
(
10
−3
).
further
introduction
sulfo‐cyanine5
resulted
process,
which
not
only
led
to
NIR
but
also
increased
.
Temporal
control
these
realized
introducing
alkaline
phosphatase
fabricate
biomimetic
enzyme‐catalyzed
network,
allowing
turned
on.
Based
on
enzyme‐regulated
temporally
controllable
assemblies,
multilevel
information
encryption
system
developed.
This
study
provides
pioneering
example
construction
materials
ability
perform
temporal
via
assembly
strategy,
expected
aid
design
complex
more
closely
resemble
natural
biological
systems.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(21)
Published: March 28, 2024
Abstract
Generating
circularly
polarized
luminescence
(CPL)
with
simultaneous
high
photoluminescence
quantum
yield
(PLQY)
and
dissymmetry
factor
(
g
lum
)
is
difficult
due
to
usually
unmatched
electric
transition
dipole
moment
μ
magnetic
m
of
materials.
Herein
we
tackle
this
issue
by
playing
a
“cascade
cationic
insertion”
trick
achieve
strong
CPL
(with
PLQY
~100
%)
in
lead‐free
metal
halides
values
reaching
−2.3×10
−2
without
using
any
chiral
inducers.
Achiral
solvents
hydrochloric
acid
(HCl)
N,
N
‐dimethylformamide
(DMF)
infiltrate
the
crystal
lattice
via
asymmetric
hydrogen
bonding,
distorting
perovskite
structure
induce
“intrinsic”
chirality.
Surprisingly,
additional
insertion
Cs
+
cation
substitute
partial
(CH
3
2
NH
transforms
space
group
achiral
but
maintains
chiroptical
activity.
Further
doping
Sb
3+
stimulates
as
result
self‐trapped
excitons
(STEs)
formation
disturbing
framework.
The
perovskites
indium‐antimony
chlorides
embedded
on
LEDs
chips
demonstrate
promising
potential
emitters.
Our
work
presents
rare
cases
activity
highly
luminescent
from
only
building
blocks
spontaneous
resolution
symmetry
breaking.
Aggregate,
Journal Year:
2023,
Volume and Issue:
5(2)
Published: Nov. 1, 2023
Abstract
Scintillators,
which
can
convert
high‐energy
particles
(X‐rays)
into
detectable
low‐energy
ultraviolet–visible–near‐infrared
photons,
are
essential
components
of
X‐ray
detectors
and
show
extensive
practical
applications
in
nondestructive
detection
medical
imaging.
Traditionally,
inorganic
scintillators
represented
by
CsI:Tl
have
achieved
definite
progress.
However,
the
harsh
preparation
conditions,
high
production
cost,
poor
mechanical
properties
impede
their
potential
development
high‐end
imaging
field.
Organic–inorganic
hybrid
metal
complexes
could
be
excellent
alternatives,
virtue
structural
spectral
tunability,
good
solution
processability,
photophysical
properties.
This
review
mainly
focuses
on
eco‐friendly
lead‐free
(Mn
2+
,
Cu
+
Sb
3+
Sn
Ge
Ln
etc.)
complex
scintillators.
The
luminescence
mechanisms
introduced
scintillation
performance,
such
as
light
yield,
limit
detection,
resolution,
etc.,
is
highlighted.
Moreover,
current
challenges
perspectives
this
emerging
field
described.
It
hoped
to
provide
some
theoretical
guidance
for
continuous
new
scintillator
systems.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(51)
Published: Aug. 24, 2024
Abstract
Scintillators
can
convert
the
ionizing
radiation
into
visible
light
and
are
crucial
in
X/γ‐ray
detectors.
Commercial
detectors
often
use
multiple
scintillators
with
photodetector
arrays,
where
optical
crosstalk
degrade
performance.
Chiral
scintillators,
emitting
circularly
polarized
light,
offer
a
promising
solution
for
regulating
direction
of
propagation
to
enhance
X‐ray
detecting
merits.
Here
novel
chiral
metal‐organic
polymers
have
been
developed
via
photopolymerization,
using
polymeric
monomers
0D
Mn(II)‐based
organic‐metal
halide
hybrid
achieving
luminescence
dissymmetry
factors
(
g
lum
)
5.823
×
10
−2
−2.877
.
Two
such
(atpp)
2
MnCl
4
·0.5H
O
(MnCl
−
1
MnBr
(MnBr
),
exhibit
excellent
scintillation
rooted
tetrahedral
[MnX
]
2−
crystal
field.
Compound
,
heavier
bromine
atoms,
shows
superior
performance
detection
limit
0.117
µGy
air
s
−1
compared
0.330
both
surpassing
medical
diagnostic
standard
5.50
The
polymer
film
derived
from
has
achieved
resolution
up
14.84
lp
mm
exceeding
standards
dental
(2.0
breast
cancer
(10.0
imaging.
These
advancements
hold
significant
promise
high‐resolution
imaging
applications.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(26)
Published: April 18, 2024
Ultraviolet
circularly
polarized
luminescence
(UV-CPL)
with
high
photon
energy
shows
great
potential
in
light
sources
and
stereoselective
photopolymerization.
However,
developing
luminescent
materials
UV-CPL
performance
remains
challenging.
Here,
we
report
a
pair
of
rare
earth
Ce
