Dual‐direction Circularly Polarized Luminescence Materials With On‐demand Handedness and Superior Flexibility
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 29, 2024
Abstract
This
work
utilizes
the
self‐assembled
cellulose
nanocrystals
(CNCs)
as
host
chiral
template
and
fabricates
a
circularly
polarized
luminescence
(CPL)
film.
By
manipulating
photonic
bandgap,
synthesized
film
integrates
strong
CPL
signal
superior
mechanical
flexibility.
Without
losing
activity,
ultimate
strain
of
19%
has
exceeded
most
CNC‐based
luminescent
assemblies,
which
enables
them
candidates
in
optical
sensor
wearable
device.
Meanwhile,
humidity‐stimulus
response,
with
dissymmetry
factor
(
g
lum
)
close
to
0.51.
responsive
process
is
reversible
properties
can
recover
upon
drying.
Next,
by
pathway,
this
achieves
on‐demand
direction
control
meets
considerable
intensity
reversed
signals
:
‐0.35),
avoiding
structure
disruption
random
under
external
stimuli,
opens
new
insight
into
regulations.
Furthermore,
combines
situ
growth
strategy
first
synthesizes
dynamic‐switchable
dual‐direction
Optics
both
directions
be
inverted
simultaneously
exchanging
sequences.
Finally,
multimodal
optics,
excellent
stability,
green
manufacturing
make
welcome
advanced
anti‐counterfeit
areas,
features
lossless
long‐time
useful.
Язык: Английский
Reversible Circularly Polarized Luminescence Inversion and Emission Color Switching in Photo-Modulated Supramolecular Polymer for Multi-Modal Information Encryption
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
Язык: Английский
Top-down approach for easy processing, cost-effective, biodegradable chiral photonic materials with spontaneous circularly polarized room-temperature phosphorescence activity
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 160357 - 160357
Опубликована: Фев. 1, 2025
Язык: Английский
Multiple stimuli-responsive circularly polarized luminescent bio-composite films by coassembling cellulose nanocrystals and curcumin
Shiqian Cao,
Jingpeng Wang,
Wenye Sun
и другие.
Carbohydrate Polymers,
Год журнала:
2025,
Номер
356, С. 123405 - 123405
Опубликована: Фев. 16, 2025
Язык: Английский
Solvent‐Free Supramolecular Polymerization for Feather‐Like Nanostructured Chiral Fluorescent Polyurethanes with Multimodal Chiroptical Stimuli Responsiveness
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 28, 2025
Abstract
Chiral
supramolecular
polymers
with
stimuli‐responsive
circularly
polarized
luminescence
(CPL)
are
highly
desirable
for
smart
flexible
optoelectronic
devices,
but
remain
rarely
reported.
Here,
a
simple
solvent‐free
polymerization
preparing
chiral
polyurethanes
is
presented
by
in
situ
induced
self‐assembly
strategy,
using
cellulose
nanocrystals
(CNCs)‐based
isocyanate
prepolymers
and
macromolecular
polyols
as
precursors,
achieving
precise
control
over
polymer
chain
assembly
spot‐like
arrangement.
More
importantly,
further
incorporating
π‐conjugated
luminescent
dihydroxynaphthalene
molecule,
CPL‐active
polyurethane
films
feather‐like
nanostructures
constructed,
which
promote
the
ordered
arrangement
of
CNCs‐based
segments
due
to
increased
spatial
resistance.
The
π─H
bond
network
between
CNCs
urethane‐linked
benzene
rings
drives
self‐assembly,
enabling
higher‐level
amplification
enhanced
fluorescence.
Interestingly,
prepared
fluorescent
display
multimodal
chiroptical
stimuli
responsiveness
under
various
stimuli,
such
temperature,
solvent
polarity,
pH,
light,
sensitivity
network.
This
work
offers
new
insights
into
designing
significant
potentials.
Язык: Английский
Emergent Nonreciprocal Dual Circularly Polarized Luminescence from an Iridescent Cellulose Nanocrystalline Film
Research Square (Research Square),
Год журнала:
2025,
Номер
unknown
Опубликована: Март 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.
Язык: Английский
Polymer induced fluorescence enhancement effect on luminescent chiral nematic cellulose nanocrystal based materials
Carbohydrate Polymers,
Год журнала:
2025,
Номер
unknown, С. 123627 - 123627
Опубликована: Апрель 1, 2025
Язык: Английский
Optically Ambidextrous Reflection Circularly Polarized Luminescence Film with High Dissymmetry Factor and On‐Demand Handedness
Advanced Optical Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 31, 2024
Abstract
The
self‐assembled
cellulose
nanocrystal
(CNC)
film
has
a
left‐handed
layered
structure,
which
makes
the
reflection
of
right‐handed
circularly
polarized
(CP)
light
challenge.
Herein,
nematic
phase
layer
is
designed
and
inserted
into
chiral
organization,
to
work
as
half‐wave
retarder
make
ambidextrous
CP
reflection.
maximum
reflectivity
exceeds
80%,
breaks
50%
limitations
single‐direction
current
in
all
reported
CNC‐based
films.
This
“sandwich‐like”
structure
displays
different
optical
properties
on
both
sides,
displayed
chromatism
inversion
circular
dichroism
signals.
dual
direction‐dependent
phenomena
are
reserved
synthesized
luminescence
(CPL)
film,
with
dissymmetry
factor
(
g
lum
)
−0.4245.
However,
this
luminescent
intensity
emission
not
enough
advanced
systems.
designs
triple
CPL
amplification
path
develops
handedness
strategy,
−1.0551
0.4082.
Then,
dual‐directional
films
designed,
where
optics
can
be
switched
on‐demand.
Finally,
photonic
crystal
applied
anti‐counterfeit
superstructure
induction.
Язык: Английский
圆偏振发光材料的手性反转
Jialin Bian,
Kuo Fu,
Guofeng Liu
и другие.
Scientia Sinica Chimica,
Год журнала:
2024,
Номер
54(8), С. 1233 - 1249
Опубликована: Май 27, 2024
Circularly
polarized
luminescent
(CPL)
materials
have
attracted
widespread
attention
due
to
their
potential
applications
in
various
fields
such
as
3D
display,
photoelectric
devices,
chiral
sensors,
and
asymmetric
synthesis.Constructing
high-performance
CPL
with
tunable
handedness
direction
is
essential
for
fulfilling
the
practical
application
demands
diverse
domains.This
review
summarizes
research
progress
on
achieving
chirality
inversion
of
through
stimuli,
including
light,
temperature,
solvent,
pH
ions.It
further
briefly
discusses
inversion,
well
remaining
challenges
future
trends
this
area.
Язык: Английский