Abstract
Stimulus‐responsive
materials
that
exhibit
efficient
circularly
polarized
luminescence
(CPL)
have
gained
much
interest
for
application
in
advanced
smart
photonics.
Herein,
the
CPL‐active
enantiomorphic
0D
Sb
3+
‐doped
(R/S)
2
InCl
7
(R/S
=
R/S‐2‐methylpiperazine)
are
synthesized
via
a
solution
method.
They
show
broadband
yellow
emission
with
near‐unity
photoluminescence
quantum
yield
and
CPL
asymmetry
factor
of
1.7
×
10
−3
.
Their
fascinating
chiroptical
activity
should
be
attributed
to
chirality
transfer
self‐trapped
exciton
caused
by
strong
electron–phonon
interaction.
Particularly,
H
O‐induced
structural
transformation
is
demonstrated
obtain
non‐emission
·H
O
after
exposure
humid
environment.
Importantly,
exhibits
unique
nonlinear
optical
responses,
rotation
angle
between
quarter‐wave
plate
linearly
can
regulate
reversible
switching
negligible
luminescence.
Moreover,
white
light‐emitting
diode
fabricated
combining
blue
phosphors
BaMgAl
17
:Eu
2+
,
device
tunable
control
positive
warm
light
regulating
linear
polarizer
plate.
Based
on
responses
programmable
multi‐mode
fluorescence
encoding
system
constructed,
four‐level
information
encryption
three‐level
encrypted
3D
color
codes
also
realized
further
proof‐of‐concept
experiment.
ChemPhotoChem,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 4, 2025
Organic–inorganic
metal
halides
(OIMHs)
exhibiting
superior
optoelectronic
properties
have
shown
broad
applications
in
sensing,
photovoltaic
devices,
information
storage,
and
biological
imaging.
Compared
with
pure
inorganic
or
organic
materials,
OIMHs
are
distinguished
by
their
hybrid
feature,
processability
of
components
robustness
units,
as
well
plentiful
luminescent
sources
derived
from
ligands,
self‐trapped
excitons
(STEs)
lattices,
the
energy
transfer
between
species.
Thereinto,
chemical
composition
tunability
component,
ions,
halogen
provides
multiple
adjustable
sites
to
tailor
structures
physicochemical
properties.
However,
how
realizing
effective
tunable
luminescence
for
desired
through
rational
regulation
has
become
a
challenge.
In
this
review,
starting
structurally
OIMHs,
feasible
methods
regulating
summarized,
which
include
change
components,
dimensionality
configurations
species,
heterometal
systematic
multisite
fine‐tuning
based
on
specific
matrix.
Finally,
challenges
synthesize
promising
performance
discussed.
Abstract
Stimulus‐responsive
materials
that
exhibit
efficient
circularly
polarized
luminescence
(CPL)
have
gained
much
interest
for
application
in
advanced
smart
photonics.
Herein,
the
CPL‐active
enantiomorphic
0D
Sb
3+
‐doped
(R/S)
2
InCl
7
(R/S
=
R/S‐2‐methylpiperazine)
are
synthesized
via
a
solution
method.
They
show
broadband
yellow
emission
with
near‐unity
photoluminescence
quantum
yield
and
CPL
asymmetry
factor
of
1.7
×
10
−3
.
Their
fascinating
chiroptical
activity
should
be
attributed
to
chirality
transfer
self‐trapped
exciton
caused
by
strong
electron–phonon
interaction.
Particularly,
H
O‐induced
structural
transformation
is
demonstrated
obtain
non‐emission
·H
O
after
exposure
humid
environment.
Importantly,
exhibits
unique
nonlinear
optical
responses,
rotation
angle
between
quarter‐wave
plate
linearly
can
regulate
reversible
switching
negligible
luminescence.
Moreover,
white
light‐emitting
diode
fabricated
combining
blue
phosphors
BaMgAl
17
:Eu
2+
,
device
tunable
control
positive
warm
light
regulating
linear
polarizer
plate.
Based
on
responses
programmable
multi‐mode
fluorescence
encoding
system
constructed,
four‐level
information
encryption
three‐level
encrypted
3D
color
codes
also
realized
further
proof‐of‐concept
experiment.
