European Journal of Inorganic Chemistry,
Год журнала:
2024,
Номер
27(30)
Опубликована: Июль 26, 2024
Abstract
Chiral
organic–inorganic
hybrid
lead
halides
have
recently
attracted
great
attention
due
to
their
unique
chirality
and
diverse
functional
properties.
However,
they
suffer
from
highly
toxic
lead,
while
lead‐free
chiral
metal
especially
those
with
phase
transitions
remain
sparse.
Here,
we
report
a
new
halide
crystal
[
R
‐3‐fluoropiperidinium]
2
SbCl
5
([
‐3‐FPP]
),
which
crystalizes
in
P
1
space
group
at
293
K
consists
of
[3‐FPP]
+
cations
one‐dimensional
[SbCl
]
n
2−
zigzag
chains
corner‐sharing
6
octahedrons.
Notably,
undergoes
an
above
room
temperature
transition
313
K,
can
be
attributed
the
order‐disorder
both
organic
cation
inorganic
anions.
In
addition,
also
shows
broad
band
gap
3.21
eV.
This
work
promotes
exploration
transitions.
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 13, 2025
Nonlinear
optical
(NLO)
crystals
are
critical
for
modern
devices.
In
this
study,
two
new
hybrid
metal
halides,
(C6H5N2)2CdCl4
(1)
and
(C6H5N2)2ZnCl4
(2),
were
synthesized
by
a
mild
solution
method.
1
2
crystallize
in
different
chiral
space
groups
of
P43212
P212121,
respectively.
Their
crystal
structures
composed
[MX4]2–
(M
=
Cd,
Zn)
tetrahedrons
(C6H5N2)+
cations
with
arrangements.
They
both
have
wide
band
gaps
(3.98
3.83
eV).
Attractively,
exhibits
SHG
(second-harmonic
generation)
effect
1.2
×
KDP,
large
birefringence
(0.22@546
nm),
high
laser
damage
threshold
(35
AgGaS2),
can
be
grown
up
to
centimeter
level.
Theoretical
calculations
show
that
these
properties
result
from
the
ordered
arrangement
organic
synergistic
[MX4]
tetrahedra,
providing
example
develop
high-performance
NLO
materials
cation
regulation.
Advanced Optical Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 30, 2024
Abstract
Hybrid
organic–inorganic
halides
have
attracted
widespread
attention
due
to
their
multiple
optical
performances.
The
combination
of
distorted
metal
cation
polyhedra
and
π‐conjugated
organic
ions
is
an
effective
strategy
derive
hybrid
nonlinear
(NLO)
birefringent
crystals.
Here,
a
new
acentric
4‐cyanopyridine
mercury
halide,
(C
6
H
5
N
2
)HgCl
3
,
been
obtained
via
replacing
inorganic
with
based
on
parent
compound
CsHgCl
.
shows
the
strongest
second
harmonic
generation
(SHG)
effect
among
mercury‐pyridine
halides,
intensity
3.04
times
KH
PO
4
(KDP)
at
1.064
µm
laser
radiation.
crystal
structure
composed
specially
[HgCl
]
∞
chains
[(C
)
+
cations.
Additionally,
outstanding
experimental
birefringence
(Δn
=
[email protected]
µm),
which
largest
value
mercury‐based
its
greater
than
those
all
halide
discovery
indicates
potential
advantage
in
materials.
Laser & Photonics Review,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 5, 2024
Abstract
Organic–inorganic
metal
halides
(OIMHs)
exhibit
a
rich
structural
diversity
and
excellent
semiconductor
properties,
making
them
attractive
candidates
in
the
field
of
nonlinear
optics
(NLO).
Second
harmonic
generation,
as
an
important
NLO
property,
imposes
strict
symmetry
constraints,
requiring
noncentrosymmetric
structures.
Currently,
key
task
is
to
design
structures
for
OIMHs
explore
relationship
between
structure
performance.
This
will
help
further
optimize
application
materials.
The
can
be
facilitated
by
use
chiral
organic
cations
or
distorted
inorganic
polyhedra,
both
which
induce
features
that
favor
noncentrosymmetry.
properties
are
summarized
performance
analyzed,
research
directions
these
materials
elaborated.
Inorganic Chemistry,
Год журнала:
2024,
Номер
63(34), С. 15579 - 15583
Опубликована: Авг. 15, 2024
Three
organic–inorganic
metal
iodides,
namely,
(NH4)(l-hp)ZnI3
(1),
[Cd(l-hp)4]Cd3I8
(2),
and
(l-Hhp)(l-hp)PbI3
(3),
have
been
synthesized
using
l-homoproline
(l-hp)
as
the
structure-directing
agent.
These
compounds
feature
different
noncentrosymmetric
structures
optical
properties.
In
particular,
compound
3
shows
a
large
second-harmonic-generation
response
of
3.4
times
that
KH2PO4.
Density
functional
theory
calculations
were
performed
to
gain
insight
into
its
structure–property
relationship.
Chemical Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
The
chiral
molecular
structure
and
local
inversion
asymmetry
of
inorganic
octahedrons,
beyond
global
chirality,
significantly
influence
the
spin-related
properties
perovskites.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 3, 2025
Chiral
hybrid
metal
halides
show
great
promise
for
nonlinear
optical
(NLO)
applications
like
circularly
polarized
second
harmonic
generation
(SHG).
The
inherent
toxicity
of
lead
is
a
concern
the
widespread
adoption
frequently
explored
lead-based
chiral
halides.
Here,
we
report
and
third-order
NLO
properties
lead-free
0D
compounds,
(R-/S-MBA)4Bi2I10,
their
achiral
counterpart,
(Rac-MBA)4Bi2I10
(MBA:
methylbenzylammonium)
under
excitation
wavelength
ranging
1360-1590
nm.
(R-/S-MBA)4Bi2I10
exhibits
strong
SHG
along
with
stronger
third
(THG).
crystals
showed
high
sensitivity
to
handedness
pump
light
(gSHG
-
CD
≈
9%
at
1510
nm).
THG
response
shows
resonance
enhancement
matching
excitonic
absorption.
Achiral
maximum
(χ(3)
=
1.05
×
10⁻¹⁸
m2
V-
2).
Z-scan
measurements
non-resonant
femtosecond
pulse
800
nm
yield
absorption
coefficients
(β)
refractive
index
(n2)
all
three
samples,
exhibiting
highest
values.
These
halides,
efficient
nonlinearity,
stability,
are
potential
candidates
such
as
Kerr-based
switching,
up-conversion,
communication.
Journal of Materials Chemistry C,
Год журнала:
2024,
Номер
12(21), С. 7605 - 7614
Опубликована: Янв. 1, 2024
Synthesis
conditions
determine
the
dimensionality
of
TEA–Sn
perovskites
from
low
emissive
2D
structures
to
highly
luminescent
0D
structures.
Br-derivatives
can
be
tuned
form
and
structures,
Cl
I-based
cannot
dimensional
tuned.
Journal of Physics Energy,
Год журнала:
2024,
Номер
6(4), С. 042001 - 042001
Опубликована: Авг. 12, 2024
Abstract
In
materials
science,
chiral
perovskites
stand
out
due
to
their
exceptional
optoelectronic
properties
and
the
versatility
in
structure
composition,
positioning
them
as
crucial
advances
of
technologies
spintronics
chiroptical
systems.
This
review
underlines
critical
role
synthesizing
growing
these
materials,
a
process
integral
leveraging
complex
interplay
between
structural
chirality
distinctive
properties,
including
chiral-induced
spin
selectivity
activity.
The
paper
offers
comprehensive
summary
discussion
methods
used
synthesis
growth
perovskites,
delving
into
extensive
techniques,
fundamental
mechanisms,
strategic
approaches
for
engineering
low-dimensional
alongside
creation
novel
ligands.
necessity
developing
new
synthetic
maintaining
precise
control
during
is
emphasized,
aiming
enhance
boost
efficiency
selectivity.
