ACS Applied Optical Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 25, 2024
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,
Год журнала:
2024,
Номер
36(47)
Опубликована: Окт. 6, 2024
Abstract
The
development
of
stimuli‐responsive
and
color‐tunable
chiral
organic
afterglow
materials
has
attracted
great
attention
but
remains
a
daunting
challenge.
Here,
simple
yet
effective
strategy
through
the
construction
dynamic
H‐bonding
network
is
proposed
to
explore
multi‐color
by
doping
self‐designed
phosphorescent
chromophore
into
polyvinyl
alcohol
matrix.
A
deep
blue
system
with
lifetime
up
3.35
s,
quantum
yield
25.0%,
luminescent
dissymmetry
factor
0.05
achieved
reversible
formation
breakdown
upon
thermal‐heating
water‐fumigating.
Moreover,
can
be
obtained
energy
transfer,
allowing
establishment
information
displays
high‐level
4D
encryption.
This
work
not
only
offers
facile
platform
develop
advanced
also
opens
new
avenue
for
developing
next‐generation
optical
technology
enhanced
functionality
responsiveness.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 10, 2024
Abstract
Stimuli‐responsive
circularly
polarized
luminescence
(CPL)
materials
have
been
attaching
wide
attention
in
the
field
of
optical
information
storage
and
encryption,
while
still
facing
challenge
realization
high
dissymmetry
factors
(
g
lum
).
This
work
presents
a
pair
stimuli‐responsive
chiral
co‐assemblies
P7R3
P7S3
by
combining
polymer
PFIQ
containing
iso
‐quinoline
units
with
inducers.
The
obtained
can
reversibly
undergo
significant
modification
CPL
behavior
under
trifluoroacetic
acid
(TFA)
fumigation
annealing
treatment,
|g
|
values
exhibiting
reversible
shift
between
0.2
0.3.
Moreover,
before
TFA
fumigating
effectively
induce
achiral
emitters
to
generate
intense
full‐color
signals
through
energy
transfer
(CPL‐ET),
corresponding
larger
than
0.2.
encryption
decryption
as
well
multi‐level
logic
gates
application
are
achieved
leveraging
activity
co‐assembly.
provides
new
perspective
for
construction
luminescent
large
activation
emitters.
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 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
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 16, 2024
Abstract
Organic
circularly
polarized
luminescence
(CPL)
plays
crucial
roles
in
chemistry
and
biology
for
the
potential
chiral
recognition,
asymmetric
catalysis,
3D
displays,
biological
probes.
The
long‐lived
luminescence,
large
Stokes
shift,
unique
chiroptical
properties
make
organic
room‐temperature
phosphorescence
(CPP)
a
new
research
hotspot
recent
years.
Nevertheless,
achieving
high‐performance
CPP
is
still
challenging
due
to
sensitivity
complexity
of
integrating
triplet
excitons
polarization
within
materials.
This
review
summarizes
latest
advances
CPP,
ranging
from
design
strategies
photophysical
underlying
mechanisms
applications.
Specifically,
generating
are
systemically
categorized
discussed
according
interactions
between
units
chromophores.
applications
light‐emitting
diodes,
sensing,
afterglow
information
encryption
also
illustrated.
In
addition,
we
present
current
challenges
perspectives
on
developing
CPP.
We
expect
this
provide
some
instructive
principles
fabricate
materials,
offering
an
in‐depth
understanding
mechanism
paving
way
toward
diverse
practical
The Journal of Physical Chemistry Letters,
Год журнала:
2025,
Номер
unknown, С. 725 - 730
Опубликована: Янв. 12, 2025
Circularly
polarized
luminescence
(CPL)
materials
have
drawn
increasing
attention
for
their
potential
applications
in
optical
displays
and
chemo/biosensing.
Nevertheless,
the
construction
of
circularly
room-temperature
phosphorescence
(CPRTP)
is
still
a
significant
challenge.
In
this
work,
four
liquid
crystalline
polymer
network
films
with
RTP
properties
been
fabricated
via
photopolymerization
cholesteric
liquid-crystalline
mixtures
containing
different
amounts
commercially
available
dyes.
The
show
yellow-green
structural
color,
enhanced
RTP,
blue
CPL,
green
CPRTP
dissymmetry
factors
up
to
-0.90,
quantum
yields
14.8%,
emission
lifetimes
607
ms.
Furthermore,
prepared
film
pattern
presents
colors
reflective,
fluorescent,
phosphorescent
modes.
This
work
not
only
provides
deep
understanding
CPRTP,
but
also
facile
strategy
fabricate
patterns
decoration
anticounterfeiting
applications.
Proceedings of the National Academy of Sciences,
Год журнала:
2025,
Номер
122(18)
Опубликована: Апрель 29, 2025
Materials
with
pure
organic
circularly
polarized
afterglow
(CPA)
have
attracted
significant
attention
due
to
their
spatiotemporal-resolved
optical
properties,
yet
achieving
simultaneous
high
dissymmetry
factor
(glum)
and
multicolor
ultralong
emission
remains
a
challenge.
Here,
we
establish
universal
energy
transfer-photon
coupling
strategy
realize
CPA
spanning
from
blue
red
record-high
glum
(up
1.90)
lifetimes
(>6
s).
Systematic
characterization
of
nonchiral
donor–acceptor
systems
(TP-BPEA,
TP-Fluo,
etc.)
reveals
the
absence
ground-state
chiral
centers
(
g
CD
≈
0)
orientation
artifacts
LD
<
10
−7
),
confirming
key
role
cholesteric
liquid
crystal
polymer
in
chirality
induction.
This
spatiotemporal
synergy
between
transfer
(wavelength
modulation)
photonic
engineering
(polarization
control)
provides
framework
for
materials,
potential
implications
multidimensional
information
encryption.
Materials
with
pure
organic
circularly
polarized
afterglow
(CPA)
are
notable
for
their
multi-dimensional
optical
characteristics
due
to
time-dependent
and
polarization
properties.
These
attributes
endow
them
exceptional
appeal
value
in
the
realms
of
information
storage
anti-counterfeiting
measures.
Currently,
there
limited
studies
on
multi-color
CPA
materials
both
high
dissymmetry
factor
(glum)
values
long
lifetimes.
Here,
we
propose
a
universal
strategy
prepare
spanning
from
blue
red,
an
ultralong
emission
lifetime
over
6
s
glum
up
100
(the
highest
was
1.90).
This
leverages
mechanism
radiative
energy
transfer
selective
reflection
cholesteric
liquid
crystals.
Through
multi-layered
assembly,
our
method
offers
simple
means
constructing
encryption.
