Highly Stable MOF‐Type Lead Halide Luminescent Ferroelectrics
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(29)
Опубликована: Май 15, 2024
Abstract
Lead
halide
molecular
ferroelectrics
represent
an
important
class
of
luminescent
ferroelectrics,
distinguished
by
their
high
chemical
and
structural
tunability,
excellent
processability
distinctive
characteristics.
However,
inherent
instability,
prone
to
decomposition
upon
exposure
moisture
light,
hinders
broader
ferroelectric
applications.
Herein,
for
the
first
time,
we
present
a
series
isoreticular
metal–organic
framework
(MOF)‐type
lead
demonstrating
exceptional
robustness
under
ambient
conditions
at
least
15
months
even
when
subjected
aqueous
boiling
conditions.
Unlike
conventional
metal‐oxo
secondary
building
units
(SBUs)
in
MOFs
adopting
highly
centrosymmetric
structure
with
limited
distortion,
our
halide‐based
occupy
structurally
deformable
[Pb
2
X]
+
(X=Cl
−
/Br
/I
)
SBUs
that
facilitate
c
‐axis‐biased
displacement
Pb
2+
centers
substantially
contribute
thermoinducible
transformation.
Importantly,
this
MOF‐type
undergo
ferroelectric‐to‐paraelectric
phase
transitions
remarkably
Curie
temperature
up
505
K,
superior
most
ferroelectrics.
Moreover,
covalent
bonding
between
phosphorescent
organic
component
light‐harvesting
inorganic
achieves
efficient
spin‐orbit
coupling
intersystem
crossing,
resulting
long‐lived
afterglow
emission.
The
compelling
combination
stability,
ferroelectricity
emission
exhibited
opens
many
potential
opportunities
energy‐conversion
Язык: Английский
Highly Stable MOF‐Type Lead Halide Luminescent Ferroelectrics
Chen Sun,
Yukong Li,
Jinlin Yin
и другие.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(29)
Опубликована: Май 15, 2024
Abstract
Lead
halide
molecular
ferroelectrics
represent
an
important
class
of
luminescent
ferroelectrics,
distinguished
by
their
high
chemical
and
structural
tunability,
excellent
processability
distinctive
characteristics.
However,
inherent
instability,
prone
to
decomposition
upon
exposure
moisture
light,
hinders
broader
ferroelectric
applications.
Herein,
for
the
first
time,
we
present
a
series
isoreticular
metal–organic
framework
(MOF)‐type
lead
demonstrating
exceptional
robustness
under
ambient
conditions
at
least
15
months
even
when
subjected
aqueous
boiling
conditions.
Unlike
conventional
metal‐oxo
secondary
building
units
(SBUs)
in
MOFs
adopting
highly
centrosymmetric
structure
with
limited
distortion,
our
halide‐based
occupy
structurally
deformable
[Pb
2
X]
+
(X=Cl
−
/Br
/I
)
SBUs
that
facilitate
c
‐axis‐biased
displacement
Pb
2+
centers
substantially
contribute
thermoinducible
transformation.
Importantly,
this
MOF‐type
undergo
ferroelectric‐to‐paraelectric
phase
transitions
remarkably
Curie
temperature
up
505
K,
superior
most
ferroelectrics.
Moreover,
covalent
bonding
between
phosphorescent
organic
component
light‐harvesting
inorganic
achieves
efficient
spin‐orbit
coupling
intersystem
crossing,
resulting
long‐lived
afterglow
emission.
The
compelling
combination
stability,
ferroelectricity
emission
exhibited
opens
many
potential
opportunities
energy‐conversion
Язык: Английский
Crystal structure of bis(β-alaninium) tetrabromidoplumbate
Acta Crystallographica Section E Crystallographic Communications,
Год журнала:
2024,
Номер
80(9), С. 931 - 935
Опубликована: Авг. 9, 2024
The
title
compound,
poly[bis(β-alaninium)
[[dibromidoplumbate]-di-μ-dibromido]]
{(C
2
H
8
NO
)
[PbBr
4
]}
n
or
(
β
-AlaH)
PbBr
,
crystallizes
in
the
monoclinic
space
group
P
1
/
.
(PbBr
2−
anion
is
located
on
a
general
position
and
has
two-dimensional
polymeric
structure.
Pb
center
holodirected.
supramolecular
network
mainly
based
O—H...Br,
N—H...Br
N—H...O
hydrogen
bonds.
Язык: Английский