Circularly
polarized
luminescence
(CPL)
has
emerged
as
a
focal
point
in
luminescent
materials
research,
reflecting
growing
field
of
study.
Responding
to
the
demand
for
practical
applications
across
diverse
sectors,
there
is
critical
need
CPL
with
high
dissymmetry
factors
(g
lum)
and
adjustable
optical
performance,
driving
development
novel
methodological
approaches.
Chiral
nematic
liquid
crystals
(N*-LCs)
have
attracted
significant
attention
promising
candidates
producing
high-performance
due
their
ability
exhibit
enhanced
g
lum
modulate
circularly
light.
This
review
comprehensively
presents
stimuli-responsive
properties,
utilizing
N*-LCs
chiral
templates
doped
various
photochromic
compounds,
particularly
azobenzene,
spiropyran
(SP),
diarylethene
overcrowded
alkene.
By
elucidating
dynamic
interplay
between
molecular
structure,
supramolecular
organization,
response,
it
offers
profound
understanding
behaviors.
Additionally,
also
explores
multifaceted
materials,
spanning
advanced
display
technologies,
data
storage,
beyond.
examining
avenues
leveraging
unique
highlights
pivotal
role
innovation
photonic
applications,
facilitating
transformative
advancements
field.
Advanced Optical Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 25, 2024
Abstract
Negative
dichroic
dyes
are
crucial
for
enhancing
the
brightness
of
liquid
crystal
displays
(LCDs)
and
modulating
circularly
polarized
luminescence
(CPL)
in
cholesteric
crystals
(CLCs)
through
supramolecular
co‐assembly.
However,
majority
fluorescent
molecules
exhibit
positive
dichroism,
there
is
a
limited
understanding
designing
negative
molecules.
In
this
paper,
novel
design
principle
proposed
to
construct
polymer
by
introducing
space
charge
transfer
(TSCT)
side
chain
structure
backbone.
Specifically,
two
conjugated
polymers
(P1,
P2)
synthesized
using
Suzuki
coupling
reaction
donor‐acceptor
(D‐A)
type
monomers
(V‐type
M1
I‐type
M2)
with
fluorenyl
monomer.
P1
exhibits
its
orientational
order
parameter
(S
F
)
up
S
FP1
=
–0.18.
On
contrary,
P2
dichroism
(
FP2
+
0.27).
This
variation
arises
from
differing
orientations
rigidly
functional
chains
FM1
0.07;
FM2
0.31),
which
affect
alignment
(parallel
or
perpendicular)
backbone
toward
CLCs
phenomenon
facilitates
controllable
precisely
modulates
handedness
CPL
signals,
thereby
facilitating
successful
implementation
multidimensional
information
encryption
systems
CLCs.
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.
Circularly
polarized
luminescence
(CPL)
has
emerged
as
a
focal
point
in
luminescent
materials
research,
reflecting
growing
field
of
study.
Responding
to
the
demand
for
practical
applications
across
diverse
sectors,
there
is
critical
need
CPL
with
high
dissymmetry
factors
(g
lum)
and
adjustable
optical
performance,
driving
development
novel
methodological
approaches.
Chiral
nematic
liquid
crystals
(N*-LCs)
have
attracted
significant
attention
promising
candidates
producing
high-performance
due
their
ability
exhibit
enhanced
g
lum
modulate
circularly
light.
This
review
comprehensively
presents
stimuli-responsive
properties,
utilizing
N*-LCs
chiral
templates
doped
various
photochromic
compounds,
particularly
azobenzene,
spiropyran
(SP),
diarylethene
overcrowded
alkene.
By
elucidating
dynamic
interplay
between
molecular
structure,
supramolecular
organization,
response,
it
offers
profound
understanding
behaviors.
Additionally,
also
explores
multifaceted
materials,
spanning
advanced
display
technologies,
data
storage,
beyond.
examining
avenues
leveraging
unique
highlights
pivotal
role
innovation
photonic
applications,
facilitating
transformative
advancements
field.
