Ferroelectricity and Piezoelectric Energy Harvesting of an A3M2X9-type 0D Bromobismuthate Hybrid with Bulky Organic Quaternary Amine
Dalton Transactions,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
A
new
halobismuthate(
iii
)
compound,
[BPMBDMA]·[Bi2Br9],
was
synthesized
and
found
to
exhibit
excellent
ferroelectric
polarization.
Its
polymer
composite
devices
show
piezoelectric
energy
harvesting
application
with
high
output
performance
values.
Язык: Английский
Controlling the Orientation of Polar Axis in Chiral Metal‐Halides to Reveal Their Intrinsic Circularly Polarized Luminescence
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 18, 2025
Abstract
Finely
modulating
the
structure
of
organic
cation
in
metal‐halide
semiconductors
is
a
powerful
strategy
to
influence
symmetry
and
polarity
hybrid
compound
as
well
its
optoelectronic
properties.
In
this
study,
chiral
S/R
‐hydroxybutylammonium
(
‐HBA)
cations
are
used
prepare
series
1D
networks.
The
resulting
polar
2
Pb
3
X
8
(X
=
Br
or
I)
compounds
show
both
second
harmonic
generation
(SHG),
circular
dichroism
(CD),
circularly
polarized
luminescence
(CPL).
Contrary
networks
previously
prepared
from
‐2‐hydroxypropyl‐1‐ammonium
‐HP1A)
cations,
new
no
alteration
their
CD
signal
upon
sample
flipping,
highlighting
suitable
orientation
unique
axis
bulk
crystal
thin
film
states.
Since
macroscopic
effect
can
interfere
with
true
chiroptical
response
when
optical
normal
incident
light
beam,
presents
CPL
without
sign
modulation
after
flipping
rotating
sample,
despite
inherent
anisotropy
family
crystalline
materials.
Язык: Английский
Unraveling the Role of Structural Topology on Chirality Transfer and Chiroptical Properties in Chiral Germanium Iodides
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(35), С. 24377 - 24388
Опубликована: Авг. 20, 2024
Chiral
hybrid
organic-inorganic
metal
halides
are
highly
promising
chiroptoelectronic
materials
with
potential
applications
in
several
fields,
such
as
circularly
polarized
photodetectors,
second-order
nonlinear
optics,
and
spin-selective
devices.
However,
the
ability
of
manipulating
chiroptical
response
chirality
transfer
from
organic
ligands
require
one
to
shed
light
on
structure-property
correlations.
Herein,
we
devised
prepared
two
novel
Ge-based
chiral
showing
a
different
structural
topology,
namely,
1D
2D
arrangement,
but
composed
same
chemical
building
blocks:
(
Язык: Английский
Reconstructive Phase Transition Enables Abnormal Negative Thermal Quenching of Photoluminescence in a 1D Hybrid Perovskite
Inorganic Chemistry,
Год журнала:
2024,
Номер
64(1), С. 404 - 411
Опубликована: Дек. 30, 2024
Organic–inorganic
hybrid
perovskites
(OIHPs)
have
attracted
enormous
attention
owing
to
their
intriguing
structural
tunability
and
diverse
functional
properties.
Reconstructive
phase
transitions,
involving
the
breaking
reconstruction
of
chemical
bonds,
rarely
been
found
in
such
materials;
however,
these
features
may
induce
many
physical
properties
optics,
ferroelectrics,
ferromagnetics,
so
forth.
Here,
we
utilized
weak
switchable
coordination
bonds
HETMA-MnCl3
(HETMA
=
(2-hydroxyethyl)
trimethylammonium)
construct
a
1D
perovskite
employing
neutral
framework.
As
expected,
this
compound
undergoes
reconstructive
transition
with
high
temperature
421
K.
shows
remarkable
red
fluorescence,
wide
emission
spectrum,
long
luminous
lifetime.
Impressively,
dominates
excellent
PL
coexistence
negative
thermal
quenching
behavior.
To
best
our
knowledge,
phenomenon
has
realm
multifunctional
optoelectronic
materials.
This
work
provides
possibilities
explore
new
classes
materials
transitions
contributes
further
developments.
Язык: Английский