Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(27)
Published: May 4, 2024
Abstract
Circularly
polarized
luminescence
(CPL)‐active
materials
are
increasingly
recognized
for
their
potential
applications
such
as
3D
imaging,
data
storage,
and
optoelectronic
devices.
Typically,
CPL
have
required
high‐energy
(HE)
photons
excitation
to
emit
low‐energy
(LE)
circularly
light,
a
process
known
downshifting
(DSCPL).
However,
the
emergence
of
upconverted
(UCCPL),
where
absorption
multi
LE
results
in
emission
single
HE
photon
with
circular
polarization,
has
recently
attracted
considerable
attention.
This
minireview
highlights
intricate
relationship
between
upconversion
phenomena.
During
upconversion,
dissymmetry
factor
(
g
lum
)
value
can
be
improved
certain
systems.
Additionally,
integration
both
upconversion‐downshifting‐synergistic
systems
offers
avenues
dual‐excitation
or
dual‐emission
functionalities.
More
detail,
emerging
UCCPL
based
on
various
mechanisms
synergy
DSCPL
introduced.
several
examples
that
demonstrate
presented
highlight
future
opportunities.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(24), P. 15888 - 15897
Published: June 6, 2024
Distinguished
from
traditional
physical
unclonable
functions
(PUFs),
optical
PUFs
derive
their
encoded
information
the
properties
of
materials,
offering
distinct
advantages,
including
solution
processability,
material
versatility,
and
tunable
luminescence
performance.
However,
existing
research
on
has
predominantly
centered
visible
photoluminescence,
while
advanced
based
higher-level
covert
light
remain
unexplored.
In
this
study,
we
present
utilization
near-infrared
circularly
polarized
(NIR-CPL).
This
interesting
property
is
achieved
by
incorporating
Yb-doped
metal
halide
perovskite
nanocrystals
(Yb-PeNCs)
possessing
NIR
emission
into
chiral
imprinted
photonic
(CIP)
films.
By
employing
a
solvent
immersion
method,
successfully
integrated
Yb-PeNCs
these
CIP
films,
thereby
creating
an
optically
surface.
The
resulting
NIR-CPL
adds
layer
security
to
PUF
systems.
These
findings
underscore
potential
solution-processable
films
play
pivotal
role
in
advancing
next
generation
PUFs.
Interdisciplinary materials,
Journal Year:
2024,
Volume and Issue:
3(1), P. 54 - 73
Published: Jan. 1, 2024
Abstract
Reflective
displays
have
the
advantages
of
energy
efficiency,
high
brightness,
eye
protection,
and
good
readability,
making
them
an
attractive
display
technology.
Photonic
crystal
(PhC)
structural
color
is
highly
regarded
as
ideal
choice
for
reflective
its
ecofriendliness,
colorfastness,
adjustability.
In
this
review,
we
introduce
fundamental
classification
manufacturing
methods
PhC
displays.
We
systematically
summarize
principles
PhC‐based
driven
by
various
stimuli.
Furthermore,
present
latest
research
advancements
in
based
on
smart
actuators.
Additionally,
offer
a
detailed
overview
current
status
application
prospects
liquid
three‐dimensional
Finally,
discuss
challenges
faced
provide
insights
into
their
prospects.
Advanced Optical Materials,
Journal Year:
2024,
Volume and Issue:
12(15)
Published: Feb. 5, 2024
Abstract
Chiral
self‐assembly
has
often
been
found
to
be
an
efficient
strategy
for
the
development
of
high‐performance
circularly
polarized
luminescent
(CPL)
materials,
through
regulation
ordered
helical
superstructure
blocks
in
liquid
crystal
media.
Here,
design
and
synthesis
two
pairs
axially
chiral
emitters
(BBXT‐3‐Br
BOHXT‐3‐Br)
are
reported
based
on
bromoxanthone.
And
self‐assembled
polymer
(LCP)
framework
(PRM257)
is
demonstrated
by
mixing
with
monomer
(RM257)
thermal
annealing
photoinitiated
polymerization.
Both
BBXT‐3‐Br@PRM257
BOHXT‐3‐Br@PRM257
exhibited
excellent
room
temperature
phosphorescence
(RTP)
properties.
In
addition,
enantiomers
showed
afterglow
average
lifetime
(
τ
)
162.41
ms
emitted
blue
CPL
λ
em
=
450
nm,
Φ
FL
1.3%,
|
g
0.071),
although
weak
RTP
(CP‐RTP)
observed.
Interestingly,
a
less
conjugated
system
emits
red
98.83
ms)
also
intense
CP‐RTP
612
Phos
0.45%,
0.057).
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(12), P. 15242 - 15250
Published: March 14, 2024
A
coordination
complex,
Eu(C12C12dbm)3(phen),
with
strong
emission
and
a
high
quantum
yield
(QY
∼
51.9%)
was
synthesized.
The
EuIII
as
fluorescent
emitter,
embedded
in
cholesteric
liquid
crystal
polymer
networks
(CLCNs).
series
of
free-standing
EuIII-CLCN
films
were
obtained,
generating
typical
sharp
band
corresponding
to
the
complex.
Tunable
handedness
circularly
polarized
luminescence
(CPL)
|glum|
values
(up
0.63)
observed.
CPL-active
CLCN-coated
PET
also
prepared
(|glum|
up
0.63),
which
can
be
used
for
large-area
preparations.
Moreover,
by
stacking
an
emitter-embedded
PMMA
layer
CLCN
layer,
composite
system
built,
large
value
(∼1.42)
achieved.
Fluorescence
patterns
prepared,
distinct
images
recognized
under
both
daylight
UV
light.
This
work
not
only
demonstrated
that
compounds
could
incorporated
prepare
materials
but
provided
new
perspective
emissive
anticounterfeiting
encryption.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(20), P. 26604 - 26612
Published: May 9, 2024
One
of
the
most
important
factors
for
future
application
circularly
polarized
luminescence
(CPL)
materials
is
their
high
dissymmetry
(gem),
and
more
studies
are
working
tirelessly
to
focus
on
increasing
gem
value.
Herein,
we
chose
an
achiral
liquid
crystal
polymer
(LC-P)
two
chiral
binaphthyl-based
inducers
(R/S-3
R/S-6)
with
different
substitution
positions
(3,3'
R/S-3
6,6'
construct
co-assemblies
explored
induced
amplification
CPL
behaviors.
Interestingly,
after
thermal
annealing
treatment,
this
kind
co-assembly
(R/S-3)0.05-(LC-P)0.95
can
emit
a
superior
signal
(|gem|
=
0.31
λem
424
nm),
which
achieves
about
13-fold
in
spin-coated
film,
compared
(R/S-6)0.1-(LC-P)0.9
0.023
nm).
This
because
could
further
co-assemble
form
ordered
arrangement
LC
state
generate
regular
helix
nanofibers
than
that
(R/S-6)0.1-(LC-P)0.9.
work
provides
efficient
method
synthesizing
high-quality
CPL-active
through
strategic
manipulation
structure
co-assembled
LCP
systems.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 16, 2024
Abstract
Circularly
polarized
luminescent
(CPL)
materials
have
garnered
tremendous
attention
owing
to
their
expanded
optical
properties
beyond
emission
wavelength
and
intensity.
Among
these,
the
emerging
circularly
organic
ultralong
room‐temperature
phosphorescence
(CP‐OURTP)
materialsdemonstrating
elegant
distinct
features
are
of
significant
importance
for
extended
lifetime,
which
represent
a
novel
frontier
in
research
with
promising
scientific
technological
applications
across
diverse
fields.
This
review
systematically
outlines
traditional
strategies
achieve
CP‐OURTP
including
crystals,
copolymerization,
host–guest
doping,
combination
copolymerization
spinning
twisting
technology,
supramolecular
polymer
assembly.
Importantly,
recent
progress
chiral
soft
materials,
such
as
liquid
crystals
(LCs)
involving
lyotropic
LCs
(cellulose
nanocrystals,
CNCs)
thermotropic
(cholesteric
LC
elastomers),
is
showcased.
Finally,
practical
summarized,
concludes
perspectives
on
current
challenges
future
opportunities
materials.
aims
inspire
further
innovations
fabrication
advanced
enrich
applications.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(27)
Published: May 4, 2024
Abstract
Circularly
polarized
luminescence
(CPL)‐active
materials
are
increasingly
recognized
for
their
potential
applications
such
as
3D
imaging,
data
storage,
and
optoelectronic
devices.
Typically,
CPL
have
required
high‐energy
(HE)
photons
excitation
to
emit
low‐energy
(LE)
circularly
light,
a
process
known
downshifting
(DSCPL).
However,
the
emergence
of
upconverted
(UCCPL),
where
absorption
multi
LE
results
in
emission
single
HE
photon
with
circular
polarization,
has
recently
attracted
considerable
attention.
This
minireview
highlights
intricate
relationship
between
upconversion
phenomena.
During
upconversion,
dissymmetry
factor
(
g
lum
)
value
can
be
improved
certain
systems.
Additionally,
integration
both
upconversion‐downshifting‐synergistic
systems
offers
avenues
dual‐excitation
or
dual‐emission
functionalities.
More
detail,
emerging
UCCPL
based
on
various
mechanisms
synergy
DSCPL
introduced.
several
examples
that
demonstrate
presented
highlight
future
opportunities.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Oct. 28, 2024
Circularly
polarized
luminescence
materials
with
broad
color
tunability
are
highly
valuable
for
applications
in
3D
display
and
photonic
technologies.
Here
we
show
that
incorporating
intermolecular
charge-transfer
complexation
into
chiral
supramolecular
polymers
is
an
efficient
strategy
to
achieve
this
objective.
Adjusting
the
strength
between
triphenylamine
donors
naphthalenemonoimide
acceptors
enables
tunable
circularly
signals
across
visible
light
spectrum.
This
includes
blue-colored
emission
donor
polymers,
as
well
green,
yellow,
orange
red-colored
donor-acceptor
polymers.
The
packing
modes
further
influenced
by
presence
or
absence
of
acetylene
linkages
on
donors,
resulting
ground-
excited-state
charge
transfer
varying
luminescent
lifetimes.
Additionally,
white-light
achieved
encapsulating
blue-
orange-emitting
species
surfactant-based
micelles
a
compartmentalized
manner.
Overall,
manipulating
provides
effective
approach
wide-range
materials.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 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
