Abstract
Circularly
polarized
room‐temperature
phosphorescence
(CPRTP)
simultaneously
featuring
multiple
colors
and
extremely
high
dissymmetry
factor
(
g
lum
)
is
crucial
for
increasing
the
complexity
of
optical
characteristics
advancing
further
development,
but
such
a
type
CPRTP
still
unprecedented.
The
present
work
develops
an
effective
universal
strategy
to
achieve
full‐color
with
ultra‐high
factors
in
polymeric
cholesteric
superhelix
network,
which
constructed
by
liquid
crystal
polymer
chiral
helical
(CHP).
Taking
advantage
twisting
power
CHP,
resulting
network
exhibits
remarkable
activity.
Significantly,
adopting
simple
double‐layered
architectures
consisting
film
phosphorescent
films,
blue‐,
green‐,
yellow‐,
red‐CPRTP
emissions
are
successfully
obtained,
maximum
|
values
up
1.43,
1.39,
1.09
0.84,
respectively.
Further,
multilevel
information
encryption
application
demonstrated
based
on
multidimensional
architectures.
This
study
offers
new
insights
into
fabricating
considerable
performance
advanced
photonic
applications.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 16, 2025
Abstract
Spin
light
detection
is
a
rapidly
advancing
field
with
significant
impact
on
diverse
applications
in
biology,
medicine,
and
photonics.
Developing
integrated
circularly
polarized
(CPL)
detectors
pivotal
for
next‐generation
compact
polarimeters.
However,
previous
CPL
detectors,
based
natural
materials
or
artificial
resonant
nanostructures,
exhibit
intrinsically
weak
polarization
sensitivity,
are
susceptible
to
other
states,
suffer
from
limited
bandwidths.
A
gradient‐metasurface‐contact
photodetector
demonstrated
operating
at
zero‐bias
high
discrimination
ratio
(≈1.6
✗
10
4
),
broadband
response
(500–1100
nm),
immunity
non‐CPL
components.
The
integrates
InSe
flakes
CPL‐selective
metasurface
contacts,
forming
an
asymmetric
junction
interface
driven
by
CPL‐dependent
unidirectional
propagating
surface
plasmon
waves,
generating
vectorial
photocurrents.
Furthermore,
it
implemented
the
developed
multivalued
logic
system
optical
decoding
of
CPL‐encrypted
communication
signals.
This
contact
engineering
represents
new
paradigm
property
detection,
paving
way
future
optoelectronic
systems
on‐chip
detection.
Abstract
Harnessing
nanoscale
molecular
structural
changes
to
achieve
precise
control
over
macroscopic
devices
represents
an
emerging
and
effective
strategy.
One
promising
approach
involves
the
introduction
of
light‐driven
chiral
dopants
into
liquid
crystals
(LCs),
enabling
fine‐tuned
modulation
helical
superstructures
in
cholesteric
(CLCs)
via
photoisomerization.
This
strategy
opens
up
exciting
possibilities
for
development
innovative
photo‐responsive
with
dynamic
functionalities.
review
focuses
on
most
common
used
LCs,
including
azobenzene,
diarylethene,
α
‐cyanostilbene
overcrowded
alkene.
The
chemical
design
principles
these
four
types
switches
are
highlighted,
along
their
abilities
induce
pitch
inversion
CLCs.
Finally,
applications
controlling
showcased,
particularly
display
technologies,
anti‐counterfeiting,
optical
3D
droplet
manipulation.
It
is
hoped
that
this
provides
valuable
insights
guidances
novel
advancement
soft
matter
material
applications.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 2, 2024
Chiral
liquid
crystal
supramolecular
assembly
provides
an
ideal
strategy
for
constructing
excellent
circularly
polarized
luminescence
(CPL)
materials.
However,
the
chirality
transfer
in
chiral
crystals
normally
occurs
at
two
levels
from
configurational
to
phase
chirality.
The
more
precise
and
of
transmission
are
fascinating
but
remain
challenging.
present
work
reports
first
success
three-level
amplification
configurationally
point
small
molecules
conformationally
helical
polymers
finally
cholesteric
composed
nonfluorescent
(P46)
nematic
crystals.
Noticeably,
twisting
power
P46
is
five-fold
larger
than
its
monomer.
Full-color
white
CPL
with
maximum
dissymmetry
factor
up
1.54
photoluminescence
quantum
yield
63.8%
realized
utilizing
combined
selective
reflection
mechanism.
Also
significantly,
electrically
stimuli-responsive
switching
device
as
well
anti-counterfeiting
security,
information
encryption,
logic
gate
applications
developed.
This
study
deepens
understanding
across
different
hierarchical
levels.
ACS Materials Letters,
Год журнала:
2024,
Номер
6(7), С. 2957 - 2963
Опубликована: Июнь 12, 2024
Enhancing
the
dissymmetry
factor
(glum)
is
crucial
for
circularly
polarized
luminescence
(CPL)
applications.
Herein,
we
present
an
innovative
strategy
achieving
ultrastrong
|glum|
of
1.73.
This
accomplished
through
synergistic
effect
coassembly
CPL-emitting
ternary
liquid
crystal
(T-N*-LC,
=
0.47)
and
selective
reflection
(λ
590
nm)
polymer
cholesteric
(CLC)
within
a
composite
system.
Unlike
mismatched
chirality
combination
(|glum|
1.42,
ΔFL
57%),
matched
demonstrates
CPL
signal
with
1.73
low
50%
when
direction
T-N*-LC
agrees
CLC
film's
chirality.
Furthermore,
alter
matching
degree
system
by
applying
direct-current
(DC)
electric
field
to
realize
switch.
study
paves
way
developing
outstanding
CPL-active
display
materials
amplification
glum.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 28, 2024
Constructing
circularly
polarized
luminescence
(CPL)
materials
that
exhibit
dynamic
handedness
inversion
and
emissive
color
modulation
for
multimodal
information
encryption
presents
both
a
significant
challenge
compelling
opportunity.
Here,
we
have
developed
pyridinethiazole
acrylonitrile-cholesterol
derivative
(Z-PTC)
exhibits
wavelength-dependent
photoisomerization
photocyclization,
enabling
in
supramolecular
assemblies
with
decent
CPL
activity.
Coordination
Ag
Journal of Materials Chemistry C,
Год журнала:
2024,
Номер
12(16), С. 5896 - 5907
Опубликована: Янв. 1, 2024
A
copolymerization
strategy
for
preparing
mesogen-jacketed
liquid
crystal
polymers
with
stable
and
good
circularly
polarized
luminescence
was
developed
in
this
paper.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 16, 2024
Abstract
Stimuli‐responsive
circularly
polarized
luminescence
(CPL)
materials
based
on
cholesteric
liquid
crystal
(CLC)
platforms
show
great
promise
for
applications
in
information
encryption
and
anticounterfeiting.
In
this
study,
we
constructed
a
mercury
ion‐responsive
CPL
system
CLCs
by
controlling
the
conjugation
degree
of
axially
chiral
binaphthyl
derivatives.
Two
derivatives
(
R
/
S
‐1
‐2)
were
initially
used
as
dopants
to
demonstrate
that
inversion
g
lum
values
from
0.5/‐0.44
−0.53/0.48)
could
be
achieved
modulating
binaphthyls.
Based
concept,
thioacetal
‐2S
was
developed
mercury‐responsive
dopant
CLCs.
Under
Hg
ion
treatment,
sign
inverted
value
changed
0.22
−0.29)
due
transformation
into
an
aldehyde
group.
Additionally,
material
applied
encryption.
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 2, 2025
Abstract
Cholesteric
liquid
crystals
(CLCs),
as
photonic
materials
with
unique
temperature
responsiveness,
show
great
potential
in
smart
optical
applications.
However,
traditional
CLC
exhibit
limitations
self‐supporting
properties
and
photoaddressing
regulation
of
thermochromism.
Here,
dual‐wavelength
responsive
donor–acceptor
Stenhouse
adducts
(DASAs)
are
incorporated
to
construct
a
sophisticated
dual‐mode
system
for
thermochromic
polymer
dispersed
cholesteric
(PDCLCs),
wherein
CLCs
droplet
form
film.
This
research
demonstrates
both
the
reversible
photoswitching
irreversible
Ultraviolet‐induced
degradation
DASAs
can
precisely
regulate
phase
PDCLCs
while
maintaining
Bragg
reflection
throughout
visible
spectrum.
Based
on
these
characteristics,
novel
temperature‐resolved
is
designed
fabricating
anti‐counterfeiting
labels,
including
erasable
disposable
permanent
temperature‐dependent
storage
indicators.
Significantly,
synergistic
interaction
between
DASA's
absorption
PDCLC's
achieves
distinctive
“flickering”
effect
(dynamic
transitions:
visible‐invisible‐visible)
display.
Moreover,
enables
dual‐photoaddressing
encryption
secret
key
within
narrow
window,
creating
“read‐and‐destroy”
encryption.
study
presents
photoregulation
strategy
multi‐mode
display
technology
simple
preparation
convenient
readout,
paving
new
ways
applications
advanced
information
