Angewandte Chemie,
Год журнала:
2024,
Номер
136(22)
Опубликована: Март 25, 2024
Abstract
Endowing
perovskite
quantum
dots
(PQDs)
with
circularly
polarized
luminescence
(CPL)
offers
great
promise
for
innovative
chiroptical
applications,
but
the
existing
strategies
are
inefficient
in
acquiring
stimuli‐responsive
flexible
chiral
films
large,
tunable
dissymmetry
factor
(
g
lum
)
and
long‐term
stability.
Here,
we
report
a
strategy
design
synthesis
of
luminescent
cholesteric
liquid
crystal
elastomer
(Lumin‐CLCE)
mechanically
CPL,
which
is
enabled
by
crystal‐templated
self‐assembly
situ
covalent
cross‐linking
judiciously
designed
photopolymerizable
CsPbX
3
(X=Cl,
Br,
I)
PQD
nanomonomers
into
elastic
polymer
networks.
The
resulting
Lumin‐CLCE
showcase
structural
color
natural
light
noticeable
CPL
maximum
value
up
to
1.5
under
UV
light.
manipulation
intensity
rotation
direction
achieved
controlling
self‐assembled
helicoidal
nanostructure
handedness
soft
helices.
A
significant
breakthrough
lies
achievement
reversible,
perovskite‐based
switch
activated
biaxial
stretching,
enables
flexible,
dynamic
anti‐counterfeiting
labels
capable
decrypting
preset
information
specific
polarization
states.
This
work
can
provide
new
insights
development
advanced
materials
their
emerging
applications
encryption,
3D
displays,
beyond.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(46)
Опубликована: Сен. 30, 2023
It
is
noteworthy
that
cholesteric
liquid
crystal
(CLC)
platforms
have
been
witnessed
in
high-performance
circularly
polarized
luminescence
(CPL)
behaviors
through
the
highly
organized
chiral
co-assembled
arrangement
of
achiral
dyes.
However,
most
CPL-active
design
strategies
are
closely
relative
to
helix
co-assembly
structure
CLC
rather
than
Herein,
we
developed
an
intriguing
regulation
strategy
for
materials.
They
were
regulated
using
orientational
order
parameter
(SF
)
dichroic
dyes
as
incisive
probe
degree
media.
The
I-shaped
phenothiazine
derivative
PHECN
dye
=0.30)
emitted
a
strong
CPL
signal
(|glum
|=0.47).
In
contrast,
T-shaped
(PHEBen)
=0.09)
showed
weak
circular
polarization
level
|=0.07)
at
similar
textures.
Most
interestingly,
this
kind
with
higher
SF
could
greatly
improve
contrast
ratio
(Δglum
=0.47)
and
emission
intensity
(ΔFL=46.0
%)
direct-current
electric
field
compared
PHEBen
=0.07
ΔFL=1.0
CLC.
This
work
demonstrates
induced
can
be
mediated
dye,
which
will
open
new
avenue
developing
excellent
display
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(5), С. 6133 - 6142
Опубликована: Янв. 25, 2024
With
the
rapid
development
of
information
technology,
encrypted
storage
is
becoming
increasingly
important
for
human
life.
The
luminescent
materials
with
a
color-changed
response
under
physical
or
chemical
stimuli
are
crucial
coding
and
anticounterfeiting.
However,
traditional
fluorescent
usually
face
problems
such
as
lack
tunable
fluorescence,
insufficient
surface-adaptive
adhesion,
strict
synthesis
conditions,
hindering
their
practical
applications.
Herein,
series
lanthanide
hybrid
organogels
(Ln-MOGs)
were
rapidly
synthesized
using
simple
method
at
room
temperature
through
coordination
between
ions
2,6-pyridinedicarboxylic
acid
5-aminoisophthalic
acid.
And
multicolor
inks
also
prepared
based
on
Ln-MOG
hyaluronic
acid,
advantages
being
easy
to
write,
color-adjustable,
water-responsive
discoloration,
which
has
been
applied
paper-based
anticounterfeiting
technology.
Inspired
by
responsiveness
water,
we
designed
logic
system
that
can
realize
single-input
operations
(NOT
PASS1)
double-input
(NAND,
AND,
OR,
NOR,
XOR).
encryption
binary
code
be
actualized
utilizing
different
modes
circuit
system.
By
adjusting
energy
sensitization
luminescence
mechanism
in
gel
structure,
reading
writing
ability
verified,
great
potential
field
pattern
encryption.
Chemical Communications,
Год журнала:
2024,
Номер
60(25), С. 3437 - 3440
Опубликована: Янв. 1, 2024
An
ionic
hydrogen-bonded
organic
framework
exhibits
fast
and
reversible
photochromic
properties.
Benefiting
from
the
stimuli-responsive
property,
information
encryptions
decryptions
integrated
with
photoresponsivity
are
successfully
designed.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(22)
Опубликована: Март 25, 2024
Abstract
Endowing
perovskite
quantum
dots
(PQDs)
with
circularly
polarized
luminescence
(CPL)
offers
great
promise
for
innovative
chiroptical
applications,
but
the
existing
strategies
are
inefficient
in
acquiring
stimuli‐responsive
flexible
chiral
films
large,
tunable
dissymmetry
factor
(
g
lum
)
and
long‐term
stability.
Here,
we
report
a
strategy
design
synthesis
of
luminescent
cholesteric
liquid
crystal
elastomer
(Lumin‐CLCE)
mechanically
CPL,
which
is
enabled
by
crystal‐templated
self‐assembly
situ
covalent
cross‐linking
judiciously
designed
photopolymerizable
CsPbX
3
(X=Cl,
Br,
I)
PQD
nanomonomers
into
elastic
polymer
networks.
The
resulting
Lumin‐CLCE
showcase
structural
color
natural
light
noticeable
CPL
maximum
value
up
to
1.5
under
UV
light.
manipulation
intensity
rotation
direction
achieved
controlling
self‐assembled
helicoidal
nanostructure
handedness
soft
helices.
A
significant
breakthrough
lies
achievement
reversible,
perovskite‐based
switch
activated
biaxial
stretching,
enables
flexible,
dynamic
anti‐counterfeiting
labels
capable
decrypting
preset
information
specific
polarization
states.
This
work
can
provide
new
insights
development
advanced
materials
their
emerging
applications
encryption,
3D
displays,
beyond.
