Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(18)
Published: Jan. 25, 2024
Abstract
Integrating
optically
active
components
into
chiral
photonic
cellulose
to
fabricate
circularly
polarized
luminescent
materials
has
transformative
potential
in
disease
detection,
asymmetric
reactions,
and
anticounterfeiting
techniques.
However,
the
lack
of
cellulose‐based
left‐handed
light
(L‐CPL)
emissions
hampers
progress
these
functionalizations.
Here,
this
work
proposes
an
unprecedented
strategy:
incorporating
a
nematic
organization
hydroxypropyl
with
robust
aggregation‐induced
emission
luminogens
generate
intense
L‐CPL
emission.
By
utilizing
N
,
‐dimethylformamide
as
good
solvent
for
fluorescent
matrices,
produces
right‐handed
structure
film
uniform
appearance
reflective
states.
Remarkably,
system
integrates
high
factor
(0.51)
impressive
quantum
yield
(55.8%)
one
fascinating
composite.
More
meaningfully,
approach
is
versatile,
allowing
incorporation
luminogen
derivatives
emitting
multicolored
L‐CPL.
These
films
possess
exceptional
mechanical
flexibility
(toughness
up
0.9
MJ
m
−3
)
structural
stability
even
under
harsh
environmental
exposures,
making
them
promising
fabrication
various
products.
Additionally,
can
be
cast
on
fabrics
reveal
multilevel
durable
capabilities
or
used
source
induce
enantioselective
photopolymerization,
thereby
offering
significant
diverse
practical
applications.
Abstract
Circularly
polarized
light
exhibits
promising
applications
in
future
displays
and
photonic
technologies.
luminescence
(CPL)
from
chiral
luminophores
is
an
ideal
approach
to
directly
generating
circularly
light,
which
the
energy
loss
induced
by
filters
can
be
reduced.
Among
various
luminophores,
organic
micro-/nano-structures
have
attracted
increasing
attention
owing
high
quantum
efficiency
dissymmetry
factor.
Herein,
recent
progress
of
CPL
summarized.
Firstly,
design
principles
CPL-active
are
expounded
construction
micro-/nano-structure
introduction
chirality.
Based
on
these
principles,
several
typical
with
activity
introduced
detail,
including
self-assembly
small
molecules,
π-conjugated
polymers,
micro-/nanoscale
architectures.
Subsequently,
we
discuss
external
stimuli
that
regulate
performance,
solvents,
pH
value,
metal
ions,
mechanical
force,
temperature.
We
also
summarize
materials
light-emitting
diodes,
optical
information
processing,
chemical
biological
sensing.
Finally,
current
challenges
prospects
this
emerging
field
presented.
It
expected
review
will
provide
a
guide
for
excellent
materials.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(37)
Published: Aug. 1, 2021
Abstract
3D
laser
displays
play
an
important
role
in
next‐generation
display
technologies
owing
to
the
ultimate
visual
experience
they
provide.
Circularly
polarized
(CP)
emissions,
featuring
optical
rotatory
power
and
invariability
under
rotations,
are
attractive
for
due
potential
enhancing
contrast
ratio
comfortability.
However,
lack
of
pixelated
self‐emissive
CP
microlaser
arrays
as
panels
hinders
implementation
displays.
Here,
full‐color
demonstrated
based
on
lasing
with
inkjet‐printed
cholesteric
liquid
crystal
(CLC)
panels.
Individual
lasers
realized
by
embedding
fluorescent
dyes
into
CLCs
their
left‐/right‐handed
helical
superstructures
serving
distributed
feedback
microcavities,
bringing
ultrahigh
circular
polarization
degree
values
(
g
em
=
1.6).
These
pixels
exhibit
excellent
far‐field
color‐rendering
features
a
relatively
large
color
gamut
high‐fidelity
With
these
printed
CLC
red–green–blue
(RGB)
panels,
proof‐of‐concept
via
delivering
images
orthogonal
emissions
one's
left
right
eyes.
results
provide
valuable
enlightenment
development
Chiral
nanomaterials
with
intrinsic
chirality
or
spatial
asymmetry
at
the
nanoscale
are
currently
in
limelight
of
both
fundamental
research
and
diverse
important
technological
applications
due
to
their
unprecedented
physicochemical
characteristics
such
as
intense
light-matter
interactions,
enhanced
circular
dichroism,
strong
circularly
polarized
luminescence.
Herein,
we
provide
a
comprehensive
overview
state-of-the-art
advances
liquid
crystal-templated
chiral
nanomaterials.
The
chiroptical
properties
touched,
design
principles
bottom-up
synthesis
strategies
discussed.
Different
functional
based
on
liquid-crystalline
soft
templates,
including
plasmonic
luminescent
nanomaterials,
systematically
introduced,
underlying
mechanisms,
properties,
potential
emphasized.
This
review
concludes
perspective
emerging
applications,
challenges,
future
opportunities
fascinating
can
not
only
deepen
our
understanding
fundamentals
soft-matter
chirality,
but
also
shine
light
development
advanced
toward
versatile
optics,
biology,
catalysis,
electronics,
beyond.
Aggregate,
Journal Year:
2021,
Volume and Issue:
2(6)
Published: Oct. 22, 2021
Abstract
Circularly
polarized
luminescence
(CPL)
has
gained
considerable
attention
in
various
systems
and
rapidly
developed
into
an
emerging
research
field.
To
meet
the
needs
of
actual
applications
diverse
fields,
a
high
dissymmetry
factor
(
g
lum
)
tunable
optical
performance
CPL
would
be
most
urgent
pursuit
for
researchers.
Accordingly,
many
materials
strategies
have
been
to
address
these
critical
issues.
Emissive
cholesteric
liquid
crystals
(CLCs),
that
is,
luminescent
self‐organized
helical
superstructures,
are
considered
ideal
candidates
constructing
CPL‐active
materials,
as
they
not
only
exhibit
values,
but
also
enable
flexible
control
CPL.
This
review
mainly
summarizes
characteristics
based
on
CLCs
bulk
phase
doped
with
different
emitters,
including
aggregated
induced
emission
molecules,
conventional
organic
small
polymer
metal–organic
complex
nanoparticles.
In
addition,
recent
significant
progress
stimulus‐responsive
emissive
terms
several
types
stimuli,
light,
electricity,
temperature,
mechanical
force,
multiple
stimuli
is
presented.
Finally,
short
perspective
opportunities
challenges
associated
CLC
field
provided.
anticipated
offer
new
insights
guidelines
developing
CLC‐based
broader
applications.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: March 2, 2022
Abstract
Herein,
we
present
a
phosphorescent
cationized
cellulose
derivative
by
simply
introducing
ionic
structures,
including
cyanomethylimidazolium
cations
and
chloride
anions,
into
chains.
The
imidazolium
with
the
cyano
group
nitrogen
element
promote
intersystem
crossing.
cyano-containing
cations,
anions
hydroxyl
groups
of
form
multiple
hydrogen
bonding
interactions
electrostatic
attraction
interactions,
effectively
inhibiting
non-radiative
transitions.
resultant
cellulose-based
RTP
material
is
easily
processed
films,
fibers,
coatings
patterns
using
eco-friendly
aqueous
solution
processing
strategies.
Furthermore,
after
construct
cross-linking
structure
adding
small
amount
glutaraldehyde
as
agent,
as-fabricated
exhibit
excellent
antibacterial
properties
water
resistance.
Therefore,
considering
outstanding
biodegradability
sustainability
materials,
easy-to-process
materials
can
act
antibacterial,
water-resistant,
patterns,
bulk
which
have
enormous
potential
in
advanced
anti-counterfeiting,
information
encryption,
disposable
smart
labels,
etc.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Jan. 20, 2022
Circularly
polarized
organic
afterglow
(CPOA)
with
both
long-lived
room-temperature
phosphorescence
(RTP)
and
circularly
luminescence
(CPL)
is
currently
attracting
great
interest,
but
the
development
of
multicolor-tunable
CPOA
in
a
single-component
material
remains
formidable
challenge.
Here,
we
report
an
efficient
strategy
to
achieve
multicolor
molecules
through
chiral
clusterization
by
implanting
chirality
center
into
non-conjugated
cluster.
Owing
excitation-dependent
emission
clusters,
highly
significantly
tuned
emissions
from
blue
yellowish-green
dissymmetry
factor
over
2.3
×
10
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
35(34)
Published: Jan. 13, 2022
Chiral
inorganic
nanostructures
strongly
interact
with
photons
changing
their
polarization
state.
The
resulting
circularly
polarized
light
emission
(CPLE)
has
cross-disciplinary
importance
for
a
variety
of
chemical/biological
processes
and
is
essential
development
chiral
photonics.
However,
the
effects
are
often
complex
interpretation
dependent
on
several
structural
parameters
nanostructure.
CPLE
in
nanostructured
media
multiple
origins
optical
typically
convoluted
into
single
output.
Analyzing
data
obtained
nanoclusters,
nanoparticles,
nanoassemblies,
nanocomposites
from
metals,
chalcogenides,
perovskite,
other
nanostructures,
it
shown
here
that
there
distinct
groups
nanomaterials
which
dominated
either
by
luminescence
(CPL)
or
scattering
(CPS);
also
many
they
comparable.
following
points
demonstrated:
1)
CPL
CPS
contributions
involve
light-matter
interactions
at
different
levels;
2)
contribution
especially
strong
microparticles,
composites;
3)
engineering
materials
requires
synergistic
implementation
effects.
These
findings
expected
to
guide
technological
fields,
including
3D
displays,
information
storage,
biosensors,
spintronics,
biological
probes.
