Endowing
liquid
crystal
polymers
with
chirality
and
luminescence
is
a
powerful
strategy
to
address
the
low
asymmetry
factor
(glum)
of
organic
circularly
polarized
(CPL)
films.
However,
mechanism
chiral
transfer
amplification
in
multicomponent
stacking
mode
polymers,
exogenous
molecules,
fluorescent
dyes
remains
challenge.
Here,
CPL
films
high
glum
values
were
obtained
by
controlling
modes
three
components.
Employing
axial
1,1′-bi-2-naphthol
as
dopant
allowed
for
more
efficient
induction
due
its
favorable
H-aggregation
self-assembly
additional
π–π
interactions
achiral
components,
resulting
considerable
value
0.57.
This
work
provides
insights
into
understanding
offers
flexible
approach
design
advanced
materials.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 10, 2025
The
design
of
synthetic
hydrogels
that
can
mimic
their
biological
counterparts
in
the
simultaneous
production
multicolor
change
and
shape
transformation
response
to
environmental
stimuli
is
great
importance
toward
intelligent
camouflage,
encryption,
actuation.
Previous
efforts
have
focused
primarily
on
developing
heterogeneous
highly
rely
respective
mechanisms
achieve
color
changes
separately,
synergistically
synchronizing
such
two
variations
into
structurally
homogenous
via
a
single
chromophore
has
been
challenging.
Here,
molecular
hydrogel
simultaneously
exhibiting
synchronized
deformation
triggered
by
stimulus
light
reported.
synchronization
mechanism
originates
from
coupled
alteration
upon
irradiation
fluorescence
emission
charge
states
spiropyran
photochromophore
covalently
incorporated
network,
thus
leading
macroscale
variation
hydrogel,
respectively.
Following
this
principle,
both
positive
negative
phototropic
are
obtained
concomitantly
with
but
flexibly
tunable
illumination
demonstrated
ingenious
application
biomimetic
actuation,
camouflage
rational
combination
these
systems.
This
work
represents
an
innovative
strategy
for
bioinspired
materials
functions
compound.
Advanced Optical Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 27, 2025
Abstract
Dynamic
and
reversible
manipulation
of
circularly
polarized
luminescence
(CPL)
in
soft
materials
is
highly
desirable
for
advanced
chiroptical
devices,
information
encryption,
labeling
technology.
However,
this
remains
a
formidable
challenge
organic
ultralong
room‐temperature
phosphorescence
(CP‐OURTP)
materials.
Herein,
bilayered
chiral‐switchable
CP‐OURTP
system
presented,
composed
light‐driven
hydrazone
photoswitch
(M1)‐doped
helical
superstructure
layer
room
temperature
(RTP)
polymer
layer,
enabling
dynamic
chirality
inversion
manner
under
alternating
stimulation
460
340
nm
light
irradiation.
The
obtained
film
exhibits
with
maximum
absolute
dissymmetry
factor
(
g
lum
)
value
0.39
long‐lived
emission
lifetime
823
ms.
Notably,
the
values
can
be
dynamically
reversibly
modulated
between
+0.30
and−0.35
irradiation
different
wavelengths
over
50
cycles
without
fatigue,
owing
to
photoinduced
configuration
changes
M1,
making
first
example
regulating
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 13, 2025
Abstract
Ubiquitous
chirality
has
attracted
increasing
attention
because
of
its
unique
scientific
significance.
Moreover,
circularly
polarized
(CP)
absorption
and
emission,
which
are
the
essential
components
chiral
optics,
have
received
considerable
interest
from
researchers.
However,
very
few
studies
been
conducted
on
materials
with
nonreciprocal
CP
emission
that
emit
light
opposite
handedness
their
two
surfaces.
Here,
we
present
a
novel
film
developed
cellulose
nanocrystalline
(CNC).
A
sustainable
CNC
twisted
right-handedness
to
inherent
left-handed
nematic
structure
is
by
rotation-induced
dynamic
self-assembly
strategy;
this
not
only
ambidextrously
reflects
left-
right-handed
but
also
clearly
exhibits
tunable
Janus
chiroptical
activity,
i.e.,
anisotropic
Both
orientation
factor
reflected
wavelength
maximum
reflectivity
significantly
depend
rotation
rate
direction.
In
particular,
for
first
time
shows
feature
luminescence
(CPL)
achieved
through
pH-regulated
doping
cadmium
telluride
quantum
dots.
This
rare
CPL
phenomenon
broken
reciprocity
in
highly
desired
next-generation
electronics
photonics
immense
potential.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 30, 2025
Abstract
Developing
full‐color
circularly
polarized
organic
ultralong
room‐temperature
phosphorescence
(CP‐OURTP)
materials
with
high
dissymmetry
factor
(
g
lum
)
holds
significant
promise
for
diverse
optoelectronic
applications.
Controlling
values
is
crucial
enhancing
the
performance
and
functionality
of
these
materials,
as
it
directly
influences
their
chiroptical
properties
potential
utilities
in
advanced
technologies.
However,
achieving
reversible
dynamic
manipulation
CP‐OURTP
remains
a
formidable
challenge.
Herein,
an
effective
strategy
presented
to
fabricate
chiral
superstructure
elastomers
(CSEs)
that
display
selective
reflection
colors,
dynamically
tunable
robust
values,
afterglow
emissions,
superior
processability
within
single
system.
By
integrating
room
temperature
(RTP)
polymers
into
CSEs,
CSEs
are
produced
demonstrating
switching
between
0.8
0.15
by
mechanical
deformation.
More
importantly,
mechanochromic,
programmable,
films
enable
development
flexible
information
encryption
decryption.
The
work
provides
new
insights
novel
RTP
advances
Advanced Optical Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 17, 2024
Abstract
Circularly
polarized
luminescence
(CPL)
of
chiral
luminescent
materials
has
gained
increasing
attention
because
their
significant
applications
in
3D
displays,
optoelectronics,
anti‐counterfeiting,
and
encryption.
A
strongly
emissive
dye
BAcT
is
synthesized
using
(
R
)‐BINOL
as
the
source
a
tetraphenylethene
group
fluorophore.
Upon
addition
to
nematic
liquid
crystal,
left‐handed
cholesteric
structure
induced.
Different
concentrations
/
S
5011
co‐dopants
are
added
prepare
series
structurally
colored
crystal
polymer
network
(CLCN)
films.
CPL
bands
detected
for
these
green
CLCN
films,
relatively
high
|
g
lum
values
(up
0.48)
obtained.
Furthermore,
fluorescent
PMMA‐BAcT
layer
prepared
by
embedding
PMMA
matrix
stacked
with
construct
composite
film.
Because
filtering
effect
film,
value
up
1.41
successfully
achieved.
Colorful
patterns
prepared,
clear
pictures
observed
both
reflective
modes,
contributing
optical
anti‐counterfeiting
enhanced
security.
This
work
not
only
provides
deeper
understanding
CPL,
but
also
establishes
practical
strategy
colorful
inkjet
printing
technology.
Advanced Optical Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 25, 2024
Abstract
Negative
dichroic
dyes
are
crucial
for
enhancing
the
brightness
of
liquid
crystal
displays
(LCDs)
and
modulating
circularly
polarized
luminescence
(CPL)
in
cholesteric
crystals
(CLCs)
through
supramolecular
co‐assembly.
However,
majority
fluorescent
molecules
exhibit
positive
dichroism,
there
is
a
limited
understanding
designing
negative
molecules.
In
this
paper,
novel
design
principle
proposed
to
construct
polymer
by
introducing
space
charge
transfer
(TSCT)
side
chain
structure
backbone.
Specifically,
two
conjugated
polymers
(P1,
P2)
synthesized
using
Suzuki
coupling
reaction
donor‐acceptor
(D‐A)
type
monomers
(V‐type
M1
I‐type
M2)
with
fluorenyl
monomer.
P1
exhibits
its
orientational
order
parameter
(S
F
)
up
S
FP1
=
–0.18.
On
contrary,
P2
dichroism
(
FP2
+
0.27).
This
variation
arises
from
differing
orientations
rigidly
functional
chains
FM1
0.07;
FM2
0.31),
which
affect
alignment
(parallel
or
perpendicular)
backbone
toward
CLCs
phenomenon
facilitates
controllable
precisely
modulates
handedness
CPL
signals,
thereby
facilitating
successful
implementation
multidimensional
information
encryption
systems
CLCs.
Chemistry - An Asian Journal,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 6, 2024
Abstract
Chiral
luminescent
liquid
crystal
(LC)
materials
with
switchable
circularly
polarized
luminescence
(CPL)
signals
have
received
extensive
attention,
in
which
the
use
of
light
stimulation
to
achieve
different
CPL
states
is
great
significance.
However,
there
are
very
few
reports
on
generation
and
regulation
enabled
by
blue
phase
LC
(BPLC).
Herein,
achieving
signal
inversion
based
transition
induced
light/temperature
a
BPLC
system
wide
room‐temperature
window
reported.
A
binaphthalene
azo‐based
chiral
photoswitch
(
S
)‐switch
3
high
helical
twisted
power
(HTP)
large
HTP
variation
synthesized,
BP
room
temperature
range
further
fabricated
doping
fluorescence
molecule
into
bulk
LC.
By
regulating
amount
,
from
cholesteric
(Ch)
at
observed
upon
365
nm
UV
irradiation
or
during
cooling
process,
polarization
correspondingly
found
due
mechanisms
CLC.
This
study
provides
new
strategy
for
flexible
system.
