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.
Chemistry of Materials,
Journal Year:
2024,
Volume and Issue:
36(7), P. 3435 - 3443
Published: April 1, 2024
Organic–inorganic
metal
halides
(OIMHs)
can
show
diverse
optical
properties
under
pressure
since
their
emission
pathways
be
facilely
manipulated
through
hydrostatic
compression.
However,
pressure-induced
phase
transitions
and
irreversibility
disrupt
the
linear
tuning
of
pressure-dependent
properties,
thereby
hampering
applications
in
sensing.
To
improve
structural
stability,
we
introduced
O–H···Br
interactions
synthesized
a
zero-dimensional
(0D)
manganese-based
(Mn-based)
OIMH,
(TDMA)MnBr3(H2O)2
[TDMA
=
(tetrahydrofuran-3-yl)methylammonium],
with
625
nm
phosphorescence
emission.
For
discoloration,
high
enhances
crystal
field
splitting
energy
Mn2+
octahedral
compression
distortion,
which
leads
to
decrease
band
gap
red
shift
wavelength.
Above
all,
strong
formed
between
adjacent
octahedra
have
effectively
improved
stability
suppressed
pressure,
promotes
generation
highly
pressure–emission
wavelength
correlation.
This
encouraging
result
opens
up
potential
sensing
within
0D
Mn-based
OIMHs.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(46)
Published: Aug. 13, 2024
Abstract
Precise
control
over
the
organic
composition
is
crucial
for
tailoring
distinctive
structures
and
properties
of
hybrid
metal
halides.
However,
this
approach
seldom
utilized
to
develop
materials
that
exhibit
stimuli‐responsive
circularly
polarized
luminescence
(CPL).
Herein,
we
present
synthesis
characterization
enantiomeric
zinc
bromides:
biprotonated
((
R/S
)‐C
12
H
16
N
2
)ZnBr
4
‐LH2)ZnBr
)
monoprotonated
15
ZnBr
‐LH1)
),
derived
from
chiral
amine
(
)‐2,3,4,9‐Tetrahydro‐1H‐carbazol‐3‐amine
14
).
These
compounds
showcase
luminescent
properties;
zero‐dimensional
form
emits
green
light
at
505
nm,
while
form,
with
a
pseudo‐layered
structure,
displays
red
599
649
nm.
Remarkably,
reversible
local
protonation‐deprotonation
behavior
cations
allows
exposure
polar
solvents
heating
induce
structural
transformations
between
two
forms.
Theoretical
calculations
reveal
lower
energy
barrier
associated
deprotonation
process
within
pyrrole
ring
responsible
observed.
enantiomorphic
bromides
also
switchable
circular
dichroism
(CD)
CPL
properties.
Furthermore,
their
chloride
counterparts
were
successfully
obtained
by
adjusting
halogen
ions.
Importantly,
unique
characteristics
position
these
halides
as
promising
candidates
applications
in
information
storage,
anti‐counterfeiting,
encryption.
Materials Horizons,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Metal
halides
are
widely
applied
in
solid-state
lighting
(SSL),
optoelectronic
devices,
information
encryption,
and
near-infrared
(NIR)
detection
due
to
their
superior
photoelectric
properties
tunable
emission.
However,
single-component
phosphors
that
can
be
efficiently
excited
by
light-emitting
diode
(LED)
chips
cover
both
the
visible
(VIS)
NIR
emission
regions
still
very
rare.
To
address
this
issue,
(TPA)2ZnBr4:Sn2+/Mn2+
(TPA
=
[(CH3CH2CH2)4N]+)
were
synthesized
using
solvent
evaporation
method.
The
Sn2+
doping
significantly
enhances
luminescence
of
(TPA)2ZnBr4,
shifts
weak
blue
light
efficient
emissions
red
zones.
Spectroscopic
studies
density
functional
theory
(DFT)
calculations
reveal
attributed
different
levels
3P1-1S0
[SnBr4]2-
tetrahedron
caused
Jahn-Teller
distortion.
More
importantly,
energy
transfer
from
Mn2+
enables
ultra-broadband
VIS-NIR
across
400-1000
nm
range,
with
excitation-dependent
characteristics.
These
suggest
has
great
potential
as
a
high-performance,
luminescent
material
for
applications
general
lighting,
source,
anti-counterfeiting
labels.
Chemical Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
By
incorporating
18-crown-6
into
PP-1,
we
constructed
a
molecular-rotor-type
material,
PCP-1,
which
exhibited
switchable
dielectrics
and
temperature-controlled
PL
response.
Abstract
As
the
kernel
component
of
X‐ray
imaging
systems,
mainstream
flat‐panel
detectors
suffer
from
image
distortion
and
blurring
when
applied
to
irregular
shaped
objects,
because
non‐conformal
collocation
between
detector
object.
Herein,
by
taking
advantage
robust
glass‐forming
capability
versatile
processability
(TPT)
2
MnBr
4
(TPT
=
propyltriphenylphosphonium)
scintillator,
reconfigurable
scintillation
screen
for
conformal
is
explored.
Compared
flexible
polymer
screens
doped
with
micro‐/nanoparticles,
melt‐casted
large‐area
(20
×
20
cm
)
are
homogeneous
immune
light
scattering,
thus
manifesting
optical
transmittance
above
80%
in
525−800
nm
range
high
spatial
resolution
25.5
lp
mm
−1
.
More
impressively,
can
be
reconfigured
shape
near
its
glass
transition
temperature,
realizing
continuous
conformance
or
changeable
objects.
Exemplified
a
flexed
elbow
joint
circuit
variational
shapes,
demonstrate
superiorities
both
clarity
(15
versus
3
imaging)
reduction
radiation
dosage.
That,
plus
scalable
fabrication
process
cost‐effective
raw
materials,
will
promise
great
potential
customized
medical
diagnostics
industrial
inspection.
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
12(17), P. 6098 - 6105
Published: Jan. 1, 2024
High-
T
c
lead-free
ferroelastic
semiconductor
(
R
/
S
-CTA)
2
SbCl
5
was
obtained
through
an
H/OH-substitution-induced
homochirality
strategy,
and
undergoes
phase
transition
at
410
K
accompanied
by
switching
between
the
SHG-active
SHG-inactive
states.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(26)
Published: April 24, 2024
Abstract
Luminescent
Mn(II)‐based
organic–inorganic
hybrid
halides
have
drawn
attention
as
potential
materials
for
sensing
and
photonics
applications.
Here,
the
synthesis
characterization
of
methylammonium
(MA)
manganese
bromide
((MA)
n
Br
x
Mn(H
2
O)
,
(
=
1,
4
3,
6))
with
different
stoichiometries
organic
cation
inorganic
counterpart,
are
reported.
While
Mn
2+
centers
an
octahedral
conformation,
two
coordinating
water
molecules
found
either
in
cis
1
)
or
trans
positions.
The
photophysical
behavior
reflects
luminescence
environment.
Although
also
has
coordination,
at
room
temperature
dual
emission
bands
≈530
≈660
nm
observed,
explained
terms
from
tetragonally
compressed
octahedra
self‐trapped
excitons
(STEs),
respectively.
Above
temperature,
shows
quasi‐tetrahedral
intense
green
emission,
while
temperatures
below
140
K,
another
STE
band
emerges
570
nm.
Time‐resolved
experiments
(77–360
K)
provide
a
clear
picture
excited
dynamics
.
rising
components
due
to
STEs
formation
equilibrated
their
precursors.
Finally,
these
fabrication
color‐tunable
down‐converted
light‐emitting
diode
(LED)
detecting
polar
solvent
vapors
is
shown.
