Laser & Photonics Review,
Год журнала:
2024,
Номер
18(11)
Опубликована: Июнь 26, 2024
Abstract
White
circularly
polarized
organic
light‐emitting
diodes
(CP‐WOLEDs)
are
central
to
prospective
3D
displays
and
lighting
sources.
However,
owing
the
unwanted
charge
trapping
effect
inefficient
chirality
transfer,
development
of
CP‐WOLEDs
with
a
high
color
rendering
index
(CRI)
large
dissymmetry
factor
(
g
EL
)
is
challenging.
Herein,
pioneering
strategy
chiral
co‐assembly‐sensitized
luminescence
(CCS‐CPL)
proposed
for
improving
performance
white
electroluminescence
(CP‐EL).
Chiral
co‐assembled
sensitizers
((
S
‐/
R
‐Cz)
0.2
‐(
I
‐P)
0.8
smartly
developed
using
π
–
stacking
interactions
between
binaphthyl
derivatives
achiral
conjugated
pyrene‐based
polymer
in
molar
ratio
1:4.
Using
on
aggregation‐induced
emission
(AIE)
dyes
emitting
layers
(EMLs)
OLEDs,
full‐color
AIE‐active
can
be
sensitized
by
co‐assembly
.
The
color‐tunable
CP‐EL
achieved
at
CIE
coordinates
(0.33,
0.33)
an
ultrahigh
CRI
93
value
up
0.071.
This
study
thus
provides
valuable
guidance
CCS‐type
CP‐WOLEDs.
Abstract
Inspired
by
the
mystery
of
natural
homochirality,
design
and
construction
artificial
chiral
systems
with
special
functions
including
mechanics,
chiroptical
devices,
separation
have
aroused
great
interest
scientists.
Due
to
its
diverse
conformations
components,
polymers
become
an
excellent
candidate
construct
aggregates,
which
provides
opportunity
fabricate
advanced
materials.
Herein,
in
this
review,
we
summarized
not
only
different
strategies
for
regulation
supramolecular
chirality
or
achiral
polymer
systems,
mainly
post‐assembly
polymerization‐induced
self‐assembly
several
transfer
induction
but
also
formation
mechanisms
aggregates
amplification
from
molecular
level
level.
Furthermore,
present
typical
applications
polymeric
circularly
polarized
light
emission,
recognition
separation,
elastomer.
Finally,
current
challenges
future
directions
are
elaborated.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(20)
Опубликована: Фев. 20, 2023
Abstract
Circularly
polarized
luminescence
(CPL)
materials
have
received
increasing
attention
in
recent
years.
Amongst
various
CPL
materials,
circularly
phosphorescence
(CPP)
featuring
long
life‐time
represent
a
novel
research
frontier
and
exhibit
promising
applications
fields.
Herein,
the
state‐of‐the‐art
advances
of
CPP
are
systematically
summarized,
as
classified
into
transition
metal
complexes,
organic
small
molecules,
polymers,
organic/inorganic
hybrid
materials.
Besides,
light‐emitting
diodes
encryption
display
also
summarized.
Furthermore,
current
challenges
future
perspectives
put
forward.
It
is
expected
that
this
review
will
offer
more
inspirations
for
rational
design
advanced
thus
further
promoting
their
practical
applications.
Advanced Optical Materials,
Год журнала:
2023,
Номер
11(6)
Опубликована: Янв. 19, 2023
Abstract
Chiral
materials
capable
of
generating
circularly
polarized
luminescence
(CPL)
have
gained
rapidly
growing
research
interest
by
virtue
their
peculiar
photophysical
characteristics
and
far‐reaching
applications.
Amongst
various
CPL
materials,
polymer‐based
constituted
an
important
class
owing
to
abundant
types,
ease
manufacture,
high
thermal
stability,
as
well
as,
tunable
properties.
The
present
work
reviews
the
latest
advances
in
constructing
which
are
classified
based
on
interaction
modes
between
chiral
luminescent
components,
that
is,
covalent
interaction,
non‐covalent
without
interactions.
newly
emerging
categories
nonconventional
fluorescence‐based
room
temperature
phosphorescence,
with
thermally
activated
delayed
fluorescence
properties
also
presented.
Typical
applications
emitters
organic
light‐emitting
diodes,
information
security
encryption,
optical
sensors
further
discussed.
Additionally,
current
challenges
future
perspectives
this
field
summarized.
This
review
article
is
expected
stimulate
more
unprecedented
achievements
derived
from
thus
promoting
practical
ACS Nano,
Год журнала:
2024,
Номер
18(3), С. 2279 - 2289
Опубликована: Янв. 11, 2024
Constructing
full-color
circularly
polarized
luminescence
(CPL)
materials
with
switchable
handedness
in
the
solid
state
is
an
appealing
yet
considerably
challenging
task,
especially
for
supramolecular
polymer
films
assembled
from
homochiral
monomers.
Herein,
polymers
CPL
and
inverted
are
realized
through
coassembly
of
a
cholesterol
derivative
(PVPCC),
metal
ions
(Zn2+),
achiral
fluorescent
dyes.
The
obtained
coassembled
systems
show
anion-directed
chirality
inversion
by
exchanging
anions
NO3–,
ClO4–,
BF4–,
Cl–.
For
instance,
negative
CD
right-handed
detected
PVPCC/Zn(NO3)2
aggregates,
which
convert
into
positive
left-handed
after
introducing
Cl–,
corresponding
to
transformation
nanorods
nanofibers.
Furthermore,
tunable
color
system
dyes
can
be
established
alternately
changing
assembling
temperature
298
273
K.
Importantly,
polymeric
then
constructed
doping
PVPCC/Zn(NO3)2/dyes
complexes
poly(methyl
methacrylate)
(PMMA)
film,
maintains
shows
enhanced
performance.
work
not
only
deepens
understanding
chemistry
but
also
helps
construct
building
blocks
science.
Chemistry - A European Journal,
Год журнала:
2023,
Номер
29(22)
Опубликована: Янв. 24, 2023
Abstract
Circularly
polarized
luminescence
(CPL)
has
attracted
much
interest
due
to
its
potential
applications
on
chiral
photonic
techniques
and
optoelectronic
materials
science.
As
known,
dissymmetry
factor
(
g
em
)
of
CPL
is
one
essential
for
evaluating
the
features
CPL‐active
materials.
Much
attention
focused
how
increase
value,
which
most
important
issues
practical
applications.
Recently,
more
works
have
demonstrated
that
supramolecular
could
provide
significant
strategy
improve
value
through
orderly
helical
superstructure
building
blocks.
Normally,
this
kind
assembly
process
can
be
accompanied
by
chirality
transfer
induction
mechanism,
promote
amplification
effect
induced
achiral
dyes.
In
review,
we
fully
summarized
recent
advances
co‐assemblies,
their
in
circularly
organic
light‐emitting
diodes
(CP‐OLEDs)
current
challenges.
Angewandte Chemie International Edition,
Год журнала:
2022,
Номер
61(47)
Опубликована: Сен. 30, 2022
Ultralong
organic
phosphorescence
(UOP)
and
circularly
polarized
luminescence
(CPL),
as
two
important
branches
in
the
field
of
optical
functional
materials
have
broad
prospects.
In
this
work,
a
pair
novel
conjugated
polymers
with
low-temperature
UOP
intense
CPL
properties
are
constructed
by
incorporating
rigid
axially
chiral
chromophores
into
polymeric
backbone.
The
twisted
biphenyl
skeleton
not
only
effectively
reduces
energy
gap
between
S1
T
to
greatly
facilitate
intersystem
crossing
process,
but
also
suppress
non-radiative
decay
from
T1
S0
.
As
result,
strong
ultralong
afterglow
up
33
s
is
achieved
2-MeTHF
at
77
K.
Moreover,
repeating
its
helix-like
form
promotes
chiroptical
activity
polymers,
signals
shown
spectra
absolute
glum
values
9.7×10-3
5.8×10-3
fluorescence
emission
peaks,
respectively.
This
work
represents
first
properties,
which
provides
new
guideline
perspective
for
development
persistent
materials.
Journal of Materials Chemistry C,
Год журнала:
2022,
Номер
11(4), С. 1242 - 1250
Опубликована: Дек. 21, 2022
The
recent
advances
and
future
perspectives
on
circularly
polarized
luminescence
materials
based
optically
active
helical
polymers
are
reviewed
discussed.
Nature Communications,
Год журнала:
2022,
Номер
13(1)
Опубликована: Авг. 20, 2022
Chiral
supramolecular
assembly
has
been
assigned
to
be
one
of
the
most
favorable
strategies
for
development
excellent
circularly
polarized
luminescent
(CPL)-active
materials.
Herein,
we
report
our
study
an
achiral
boron-containing
pyrene
(Py)-based
chromophore
(PyBO)
as
a
excimer
emission
(CPEE)
dye
induced
by
chiral
co-assemblies
containing
binaphthyl-based
enantiomers
(R/S-M).
co-assembly
R/S-M-(PyBO)
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(20)
Опубликована: Фев. 24, 2023
Circularly
polarized
electroluminescence
(CP-EL)
is
generally
produced
in
organic
light-emitting
diodes
(OLEDs)
based
on
special
CP
luminescent
(CPL)
materials,
while
common
achiral
materials
are
rarely
considered
to
be
capable
of
direct
producing
CP-EL.
Herein,
near
ultraviolet
CPL
with
high
photoluminescence
quantum
yields
and
good
dissymmetry
factors
developed,
which
can
induce
blue
red
for
various
materials.
Strong
CP-EL
the
best
external
efficiencies
(ηext
s)
9.0
%
small
efficiency
roll-offs
achieved
by
using
them
as
emitters
CP-OLEDs.
By
adopting
hosts
or
sensitizers,
commercially
available
yellow-orange
phosphorescence,
thermally
activated
delayed
fluorescence
(TADF)
multi-resonance
(MR)
TADF
generate
intense
CP-EL,
outstanding
ηext
s
(30.8
%),
demonstrating
a
simple
universal
avenue
towards
efficient
