Abstract
Circularly
polarized
luminescence
(CPL)
materials
are
highly
demanded
due
to
their
great
potential
in
optoelectronic
and
chiroptical
elements.
However,
the
preparation
of
CPL
films
with
high
dissymmetry
factors
(g
lum
)
remains
a
formidable
task,
which
impedes
practical
application
film‐based
devices.
Herein,
facile
strategy
prepare
solid
film
g
through
exogenous
chiral
induction
amplification
liquid
crystal
polymers
is
proposed.
Amplification
reversion
appear
when
annealed
at
nematic
crystalline
temperature
maximal
up
0.30
enhancement
selective
reflection.
Thermal
annealing
treatment
different
states
facilitates
formation
phase
adjusts
circularly
emission.
This
work
not
only
provides
straightforward
versatile
platform
construct
organic
capable
exhibiting
strong
emission
but
also
helpful
understanding
exact
mechanism
for
performance.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 16, 2024
Circularly
polarized
electroluminescence
(CPEL)
is
highly
promising
in
realm
of
3D
display
and
optical
data
storage.
However,
designing
a
groundbreaking
chiral
material
with
high
comprehensive
CPEL
performance
remains
formidable
challenge.
In
this
work,
pair
polymers
self-assembled
behavior
designed
by
integrating
BN-moiety
into
polyfluorene
backbone,
named
R-PBN
S-PBN,
respectively.
The
show
narrowband
emission
centered
at
490
nm
full-width
half
maximum
(FWHM)
29
photoluminescence
quantum
yield
(PLQY)
79
%.
After
thermal
annealing
treatment,
the
undergo
self-assembly,
exhibiting
amplified
circularly
luminescence
(CPL)
asymmetry
factor
(|g
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(51)
Опубликована: Авг. 24, 2024
Abstract
Scintillators
can
convert
the
ionizing
radiation
into
visible
light
and
are
crucial
in
X/γ‐ray
detectors.
Commercial
detectors
often
use
multiple
scintillators
with
photodetector
arrays,
where
optical
crosstalk
degrade
performance.
Chiral
scintillators,
emitting
circularly
polarized
light,
offer
a
promising
solution
for
regulating
direction
of
propagation
to
enhance
X‐ray
detecting
merits.
Here
novel
chiral
metal‐organic
polymers
have
been
developed
via
photopolymerization,
using
polymeric
monomers
0D
Mn(II)‐based
organic‐metal
halide
hybrid
achieving
luminescence
dissymmetry
factors
(
g
lum
)
5.823
×
10
−2
−2.877
.
Two
such
(atpp)
2
MnCl
4
·0.5H
O
(MnCl
−
1
MnBr
(MnBr
),
exhibit
excellent
scintillation
rooted
tetrahedral
[MnX
]
2−
crystal
field.
Compound
,
heavier
bromine
atoms,
shows
superior
performance
detection
limit
0.117
µGy
air
s
−1
compared
0.330
both
surpassing
medical
diagnostic
standard
5.50
The
polymer
film
derived
from
has
achieved
resolution
up
14.84
lp
mm
exceeding
standards
dental
(2.0
breast
cancer
(10.0
imaging.
These
advancements
hold
significant
promise
high‐resolution
imaging
applications.
Journal of Materials Chemistry C,
Год журнала:
2023,
Номер
11(32), С. 10993 - 11000
Опубликована: Янв. 1, 2023
Reflection-influenced
circularly
polarised
luminescence
based
on
an
AIE-active
dye
and
polymer-stabilised
cholesteric
liquid
crystal
films
was
observed.
Abstract
Circularly
polarized
luminescence
(CPL)
materials
are
highly
demanded
due
to
their
great
potential
in
optoelectronic
and
chiroptical
elements.
However,
the
preparation
of
CPL
films
with
high
dissymmetry
factors
(g
lum
)
remains
a
formidable
task,
which
impedes
practical
application
film‐based
devices.
Herein,
facile
strategy
prepare
solid
film
g
through
exogenous
chiral
induction
amplification
liquid
crystal
polymers
is
proposed.
Amplification
reversion
appear
when
annealed
at
nematic
crystalline
temperature
maximal
up
0.30
enhancement
selective
reflection.
Thermal
annealing
treatment
different
states
facilitates
formation
phase
adjusts
circularly
emission.
This
work
not
only
provides
straightforward
versatile
platform
construct
organic
capable
exhibiting
strong
emission
but
also
helpful
understanding
exact
mechanism
for
performance.
