Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 2, 2024
Abstract
Developing
films
of
chiral
metal–organic
frameworks
(MOFs)
with
high
circular
polarization
luminescence
(CPL)
is
facing
a
great
challenge
for
sensing
applications.
Herein,
layer‐by‐layer
induction
method
first
reported
to
prepare
enantiopure
MOF
CPL
sensing.
By
the
inductor
camphorsulfonic
acid,
fluorene‐based
D/L‐ZnHF‐SO
2
film
(HF‐SO
=
3,7‐Dibenzothiophenedicarboxylate,
5,5‐dioxide)
preferential
growth
orientation
and
homogeneous
surface
are
prepared,
which
shows
strong
feature
higher
asymmetry
factor
±0.073.
In
addition,
by
mixed
ligand
approach,
isostructural
fluorene
9‐fluororenone‐2,7‐dicarboxylate
chosen
replace
part
HF‐SO
preparing
series
tunable
emission.
Furthermore,
prepared
performance
further
utilized
enantiomers
The
changes
consisted
enantioselective
adsorption
results
showed
that
has
good
discrimination
against
R/S‐phenylethylamine
enantiomers,
reporting
MOF‐based
candidates
application
in
enantiomers.
This
work
provides
facile
effective
approach
materials
performance,
also
gives
new
way
achieve
Science Advances,
Journal Year:
2023,
Volume and Issue:
9(43)
Published: Oct. 25, 2023
Endowing
three-dimensional
(3D)
displays
with
flexibility
drives
innovation
in
the
next-generation
wearable
and
smart
electronic
technology.
Printing
circularly
polarized
luminescence
(CPL)
materials
on
stretchable
panels
gives
chance
to
build
desired
flexible
stereoscopic
displays:
CPL
provides
unusual
optical
rotation
characteristics
achieve
considerable
contrast
ratio
wide
viewing
angle.
However,
lack
of
printable,
intense
suitable
for
processing
hinders
implementation
3D
devices.
Here,
we
report
a
controllable
macroscopic
production
printable
CPL-active
photonic
paints
using
designed
confining
helical
co-assembly
strategy,
achieving
maximum
dissymmetry
factor
(glum)
value
1.6.
We
print
customized
graphics
meter-long
luminous
coatings
these
range
substates
such
as
polypropylene,
cotton
fabric,
polyester
fabric.
then
demonstrate
textile
display
panel
two
printed
sets
pixel
arrays
based
orthogonal
emission,
which
lays
an
efficient
framework
future
intelligent
clothing.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(48)
Published: Aug. 31, 2023
The
development
of
chiral
optical
active
materials
with
switchable
circularly
polarized
luminescence
(CPL)
signals
remains
a
challenge.
Here
an
azoarene-based
molecular
switch,
(S,
R,
S)-switch
1
and
(R,
R)-switch
2,
are
designed
prepared
(R)-binaphthyl
azo
group
as
photosensitive
moiety
two
(S)-
or
fluorescent
molecules
opposite
the
same
handedness
moieties.
Both
switches
exhibit
reversible
trans/cis
isomerization
when
irradiated
by
365
nm
UV
light
520
green
in
solvent
liquid
crystal
(LC)
media.
In
contrast
control
switch
is
doped
into
nematic
LCs,
polarization
inversion
switching-off
CPL
achieved
resultant
helical
superstructure
upon
irradiation
light,
respectively.
Meanwhile,
fluorescence
intensity
system
basically
unchanged
during
this
switching
process.
particular,
these
variations
could
be
recovered
after
heating,
realizing
true
sense
switching.
Taking
advantage
unique
switching,
proof-of-concept
for
"a
dual-optical
information
encryption
system"
based
on
above
material
demonstrated.
Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
52(10), P. 3567 - 3590
Published: Jan. 1, 2023
This
review
explores
recent
progress
in
the
use
of
chiral
metal–organic
frameworks
(MOFs)
as
platforms
for
circularly
polarised
luminescence
(CPL),
chiroptical
switching,
and
second-order
nonlinear
optics
(NLO).
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(36)
Published: July 18, 2023
Stimuli-responsive
circularly
polarized
luminescence
(CPL)
materials
are
ideal
for
information
anti-countering
applications,
but
the
best-performing
have
not
yet
been
identified.
This
work
presents
enantiomorphic
hybrid
antimony
halides
R-(C5
H12
NO)2
SbCl5
(1)
and
S-(C5
(2)
showing
mirror-imaged
CPL
activity
with
a
dissymmetry
factor
of
1.2×10-3
.
Interestingly,
DMF-induced
structural
transformation
is
realized
to
obtain
non-emissive
⋅
DMF
(3)
(4)
upon
exposure
vapor.
The
process
reversed
heating.
DFT
calculations
showed
that
DMF-induced-quenched-luminescence
attributed
intersection
ground
excited
state
curves
on
configuration
coordinates.
Unexpectedly,
nanocrystals
chiral
1
2
were
prepared
indicate
excellent
solution
performance.
reversible
PL
switching
gives
system
applications
in
technology,
anti-counterfeiting,
encryption-decryption,
logic
gates.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(26)
Published: March 17, 2023
Abstract
Exploiting
the
chirality
transfer
and
amplification
in
hierarchical
chiral
systems
by
visible
accurate
structures
is
still
a
challenge.
Herein,
pair
of
homochiral
metal‐organic
frameworks
(MOFs)
DCF‐12
LCF‐12
with
high
rigidity
porosity
are
synthesized
via
reticular
chemistry.
Interestingly,
these
two
enantiomers
can
act
as
nano‐containers,
which
four
chromophores,
covering
acridine,
pyrene,
9,10‐Bis(phenylvinyl)
anthracene
(BPEA),
coronene
be
introduced
situ
encapsulation.
Importantly,
precise
single
crystal
all
guest‐loaded
MOFs
X‐ray
diffraction
technique
obtained
smoothly.
It
not
only
clearly
reveals
from
host
framework
to
achiral
guest
emitters
through
space
transfer,
but
also
circularly
polarized
luminescence
achieved
modulated
synergistic
effect.
Extraordinarily,
both
pyrene@DCF‐12
pyrene@LCF‐12
exhibit
fascinating
multi‐color
tunable
room
temperature
phosphorescence
(RTP)
dynamic
luminescence.
Besides,
RTP
quantum
yields
pyrene@LCD‐12
up
75.39%
73.43%,
exceeds
most
that
materials.
These
results
demonstrate
serve
an
platform
investigate
mechanism
prompt
development
CPL‐active
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(41)
Published: Aug. 23, 2023
Due
to
the
pronounced
anisotropic
response
circularly
polarized
light,
chiral
hybrid
organic-inorganic
metal
halides
have
been
regarded
as
promising
candidates
for
application
in
nonlinear
chiroptics,
especially
second-harmonic
generation
circular
dichroism
(SHG-CD)
effect.
However,
designing
novel
lead-free
with
large
anisotropy
factors
and
high
laser-induced
damage
thresholds
(LDT)
of
SHG-CD
remains
challenging.
Herein,
we
develop
first
germanium
halide,
(R/S-NEA)3
Ge2
I7
⋅H2
O
(R/S-NGI),
systematically
investigated
its
linear
chiroptical
properties.
S-NGI
R-NGI
exhibit
(gSHG-CD
)
0.45
0.48,
respectively,
along
a
LDT
38.46
GW/cm2
;
these
were
highest
values
among
reported
halides.
Moreover,
effective
second-order
optical
coefficient
could
reach
up
0.86
pm/V,
which
was
2.9
times
higher
than
that
commercial
Y-cut
quartz.
Our
findings
facilitate
new
avenue
toward
halides,
their
implementation
applications.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(22)
Published: March 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.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(23), P. 16213 - 16221
Published: May 30, 2024
Combining
metal–organic
frameworks
(MOFs)
with
liquid
crystals
to
construct
crystalline
MOFs
(LCMOF)
offers
the
advantage
of
endowing
and
enhancing
their
functionality,
yet
it
remains
a
challenging
task.
Herein,
we
report
chiral
MOF
(CLCMOF)
thin
films
by
cross-linking
(CLC)
realize
highly
circular
polarization
luminescence
(CPL)
performance
photo
thermal
switching.
By
layer
stilbene-containing
CLC
stilbene-based
(CLC/MOF)
film,
CLCMOF
were
successfully
obtained
after
UV
irradiation
due
abundant
[2
+
2]
photocycloaddition.
The
resulted
have
strong
chirality,
obvious
photochromic
fluorescent,
CPL
(the
asymmetry
factor
reaches
0.4).
Furthermore,
fluorescent
thermotropic
CLC,
can
be
reversed
red-shifted
heating
treatment,
showing
photo-
Such
MOF-based
photo/thermal
switching
prepared
patterns
codes
for
demonstration
potential
application
in
advanced
information
anticounterfeit
encryption.
This
study
not
only
opens
strategy
developing
combining
but
also
new
route
achieve
optical
applications.
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(13), P. 6694 - 6734
Published: Jan. 1, 2024
Delayed
luminescence
(DF),
including
phosphorescence
and
thermally
activated
delayed
fluorescence
(TADF),
circularly
polarized
(CPL)
exhibit
common
broad
application
prospects
in
optoelectronic
displays,
biological
imaging,
encryption.
Thus,
the
combination
of
is
attracting
increasing
attention.
The
encapsulation
guest
emitters
various
host
matrices
to
form
host-guest
systems
has
been
demonstrated
be
an
appealing
strategy
further
enhance
and/or
modulate
their
luminescence.
Compared
with
conventional
liquid
crystals,
polymers,
supramolecular
matrices,
porous
crystalline
frameworks
(PCFs)
metal-organic
(MOFs),
covalent-organic
(COFs),
zeolites
hydrogen-bonded
organic
(HOFs)
can
not
only
overcome
shortcomings
such
as
flexibility
disorder
but
also
achieve
ordered
guests
long-term
stability
chiral
structures,
providing
new
promising
platforms
for
development
DF
CPL.
In
this
review,
we
provide
a
comprehensive
critical
summary
recent
progress
photochemistry
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(34)
Published: June 11, 2022
Organic
materials
with
multi-stimulus
response
(MSR)
properties
have
demonstrated
many
potential
and
practical
applications.
Herein,
a
π-stacked
thermally
activated
delayed
fluorescence
(TADF)
material
properties,
named
SDMAC,
was
designed
synthesized
using
distorted
9,9-dimethyl-10-phenyl-9,10-dihydroacridine
as
donor.
SDMAC
possesses
rigid
configuration
intramolecular
through-space
interactions
exhibits
aggregation-induced
emission
enhancement
(AIEE),
solvatochromic,
piezochromic,
circularly
polarized
luminescence
(CPL)
under
different
external
stimuli.
The
molecular
structure
efficient
TADF
of
can
be
used
in
displays
lighting.
Using
an
emitter,
the
maximum
quantum
efficiency
(EQE)
fabricated
organic
light-emitting
diodes
(OLEDs)
is
high
28.4
%,
which
make
them
most
CP-TADF
OLEDs
based
on
charge
transfer
strategy.
CP
(CP-OLEDs)
exhibit
electroluminescence
(CPEL)
signals.