The Journal of Physical Chemistry C,
Journal Year:
2022,
Volume and Issue:
126(40), P. 17381 - 17389
Published: Oct. 4, 2022
Zero-dimensional
(0D)
organic–inorganic
metal
halides
(OIMHs)
have
attracted
tremendous
attention
due
to
their
fascinating
optoelectronic
properties.
Herein,
we
report
an
antimony(III)-based
0D
OIMH
of
[PPh3H]2[SbCl5]
comprising
discrete
[SbCl5]2–
pyramids
and
protonated
triphenylphosphine
(PPh3H)
cations
with
a
low
charge
density.
Abundant
supramolecular
interactions
including
C–H···Cl
rare
P–H···Cl
hydrogen
bonds
C–H···Π
anion···Π
lead
three-dimensional
(3D)
framework
structure
[PPh3H]2[SbCl5].
Photophysical
characterizations
indicate
that
has
singlet/triplet
dual-band
emission.
The
intersystem
crossing
between
the
single
triplet
states
is
tunable
upon
changing
temperature.
Analyses
Huang–Rhys
factor
(S),
exciton
activation
energy
(Ea),
electron–phonon
coupling
(Γop)
verify
soft
lattice
strong
result
in
broad
emission
[PPh3H]2[SbCl5],
while
excited-state
reorganization
pyramid
leads
large
Stokes
shift.
DFT
calculations
help
provide
deep
understanding
on
optical
property
title
compound
could
remain
stable
for
more
than
1
year
without
obvious
decay
emission,
which
may
be
related
rigid
3D
framework.
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(9), P. 4412 - 4418
Published: Feb. 21, 2024
Due
to
the
flexible
structural
tunability
and
excellent
photoelectric
performance,
hybrid
organic-inorganic
metal
halides
(OIMHs)
have
attracted
intensive
attention
become
a
hot
topic
in
field
of
materials.
It
is
important
necessary
explore
new
OIMHs
study
their
structure-property
relationship.
In
this
work,
lead-free
OIMH,
(C
Advanced Optical Materials,
Journal Year:
2022,
Volume and Issue:
11(4)
Published: Dec. 11, 2022
Abstract
Circularly
polarized
luminescence
(CPL)
with
polychromatic
colors
has
been
widely
studied
due
to
its
great
applications
in
chiroptical,
optoelectronics,
and
spintronics.
However,
the
realization
of
white
CPL
single‐component
solid‐state
materials
remains
a
challenge
suffers
from
incompatibility
between
high
efficient
large
asymmetric
discrimination.
Here,
by
exploiting
self‐trapped
exciton
mechanism
chirality
induction
strategy,
pair
1D
chiral
perovskites,
(
RR
/
SS
‐DMPZ)PbBr
4
(where
DMPZ
=
cis
‐2,5‐dimethylpiperazine
divalent
cation),
is
reported
achieve
both
quantum
yield
28.4%
photoluminescence
asymmetry
factor
|
g
lum
2.32
×
10
−2
.
The
crystal
structures
are
featured
double‐chain
structure
composed
distorted
octahedra
short
PbPb
distances
as
structural
origin
yield.
value
caused
multiple
hydrogen
bonds
host
enantiopure
organic
cations
containing
two
stereocenters
inorganic
emitting
guest.
emission
demonstrated
density
functional
theory
calculations
variable‐temperature
femtosecond‐transient
absorption
spectroscopy
studies.
photo‐luminescent
light‐emitting
diodes
exhibit
good
stability
can
be
used
light
emitters.
This
work
provides
applicable
strategies
explore
Advanced Optical Materials,
Journal Year:
2022,
Volume and Issue:
10(15)
Published: May 19, 2022
Abstract
Metal
halide
perovskites
are
promising
optoelectronic
materials
due
to
their
unique
luminescent
properties.
However,
practical
application
is
limited
by
poor
chemical
stability,
especially
in
humid
environments.
Moisture
can
cause
phase
changes
or
decomposition,
resulting
significant
fluorescence
quenching.
In
this
study,
a
copper‐based
organic–inorganic
hybrid
metal
(t‐BA)
3
Cu
6
I
9
synthesized
(t‐BA
+
the
tert‐butyl‐ammonium
ion
(C(CH
)
NH
)).
This
material
exhibits
water‐induced
luminescence,
and
its
stability
environments
being
investigated.
Tetragonal
t‐BA
not
luminescent,
but
it
reacts
quickly
with
water
air.
The
resultant
2
4
·H
O
has
broad
green
emission
peak
at
520
nm,
high
photoluminescence
quantum
yield
of
59.4%.
Remarkably,
converted
back
temperatures
above
40
°C.
conversion
highly
repeatable,
intensity
be
fully
recovered
after
50
transformation
cycles.
mechanism
luminescence
investigated
through
temperature‐dependent
spectra
theoretical
calculation,
which
suggests
that
more
localized
charge
distribution
sufficient
polyhedral
distortion,
bright
efficient
from
self‐trapped
excitons.
first
report
halides,
paves
way
for
stable
responsive
humidity.
The Journal of Physical Chemistry C,
Journal Year:
2022,
Volume and Issue:
126(40), P. 17381 - 17389
Published: Oct. 4, 2022
Zero-dimensional
(0D)
organic–inorganic
metal
halides
(OIMHs)
have
attracted
tremendous
attention
due
to
their
fascinating
optoelectronic
properties.
Herein,
we
report
an
antimony(III)-based
0D
OIMH
of
[PPh3H]2[SbCl5]
comprising
discrete
[SbCl5]2–
pyramids
and
protonated
triphenylphosphine
(PPh3H)
cations
with
a
low
charge
density.
Abundant
supramolecular
interactions
including
C–H···Cl
rare
P–H···Cl
hydrogen
bonds
C–H···Π
anion···Π
lead
three-dimensional
(3D)
framework
structure
[PPh3H]2[SbCl5].
Photophysical
characterizations
indicate
that
has
singlet/triplet
dual-band
emission.
The
intersystem
crossing
between
the
single
triplet
states
is
tunable
upon
changing
temperature.
Analyses
Huang–Rhys
factor
(S),
exciton
activation
energy
(Ea),
electron–phonon
coupling
(Γop)
verify
soft
lattice
strong
result
in
broad
emission
[PPh3H]2[SbCl5],
while
excited-state
reorganization
pyramid
leads
large
Stokes
shift.
DFT
calculations
help
provide
deep
understanding
on
optical
property
title
compound
could
remain
stable
for
more
than
1
year
without
obvious
decay
emission,
which
may
be
related
rigid
3D
framework.
