Light Science & Applications,
Год журнала:
2024,
Номер
13(1)
Опубликована: Июнь 14, 2024
Abstract
Polymer-based
circularly
polarized
luminescence
(CPL)
materials
with
the
advantage
of
diversified
structure,
easy
fabrication,
high
thermal
stability,
and
tunable
properties
have
garnered
considerable
attention.
However,
adequate
precise
tuning
over
CPL
in
polymer-based
remains
challenging
due
to
difficulty
regulating
chiral
structures.
Herein,
visualized
full-color
is
achieved
by
doping
red,
green,
blue
quantum
dots
(QDs)
into
reconfigurable
phase
liquid
crystal
elastomers
(BPLCEs).
In
contrast
signal
observed
cholesteric
(CLCEs),
3D
cubic
superstructure
BPLCEs
induces
an
opposite
signal.
Notably,
this
effect
entirely
independent
photonic
bandgaps
(PBGs)
results
a
g
lum
value,
even
without
matching
between
PBGs
emission
bands
QDs.
Meanwhile,
lattice
structure
can
be
reversibly
switched
via
mechanical
stretching
force,
inducing
on-off
switching
signals,
these
variations
further
fixed
using
dynamic
disulfide
bonds
BPLCEs.
Moreover,
smart
systems
for
anti-counterfeiting
information
encryption
been
demonstrated,
suggesting
great
potential
BPLCEs-based
active
materials.
Light Science & Applications,
Год журнала:
2022,
Номер
11(1)
Опубликована: Авг. 5, 2022
Abstract
Animals
can
modify
their
body
shape
and/or
color
for
protection,
camouflage
and
communication.
This
adaptability
has
inspired
fabrication
of
actuators
with
structural
changes
to
endow
soft
robots
additional
functionalities.
Using
liquid
crystal-based
materials
is
a
promising
approach.
In
this
review,
we
discuss
the
current
state
potential
applications
these
in
robotic
devices.
Abstract
Photonic
actuators,
serving
as
an
emerging
kind
of
intelligent
stimuli‐responsive
material,
can
exhibit
the
abilities
to
change
their
structural
colors/fluorescence
and
shapes
under
specific
external
stimuli,
which
have
demonstrated
essential
applications
in
fields
soft
robotics,
sensors,
bionics,
information
storage,
anti‐counterfeiting,
energy
harvesting.
In
this
review,
we
reported
state‐of‐the‐art
research
progress
photonic
actuators
classified
on
basis
material
type
focusing
actuation
mechanisms,
design
principles,
processing
techniques.
We
also
broadly
summarized
relative
robots,
so
on.
Finally,
a
vision
for
challenges
area
future
promising
directions
is
presented.
Advanced Materials,
Год журнала:
2023,
Номер
35(44)
Опубликована: Март 24, 2023
Abstract
Carbon
dots
(CDs),
as
emerging
carbon
nanomaterials,
have
been
regarded
promising
alternatives
for
electroluminescent
light‐emitting
diodes
(LEDs)
owing
to
their
distinct
characteristics,
such
low
toxicity,
tuneable
photoluminescence,
and
good
photostability.
In
the
last
few
years,
despite
remarkable
progress
achieved
in
CD‐based
LEDs,
device
performance
is
still
inferior
that
of
well‐developed
organic,
heavy‐metal‐based
QDs,
perovskite
LEDs.
To
better
exploit
LED
applications
boost
performance,
this
review,
a
comprehensive
overview
currently
explored
CDs
presented,
focusing
on
key
optical
which
are
closely
related
structural
design
from
core
surface
modifications,
macroscopic
engineering,
including
embedding
matrix
or
spatial
arrangement
CDs.
The
LEDs
display
lighting
based
fluorescence,
phosphorescence,
delayed
fluorescence
emission
also
highlighted.
Finally,
it
concluded
with
discussion
regarding
challenges
plausible
prospects
field.
It
hoped
review
inspires
more
extensive
research
new
perspective
promotes
practical
multiple
directions
current
future
research.
Advanced Materials,
Год журнала:
2023,
Номер
35(49)
Опубликована: Июль 28, 2023
Chiral
nematic
liquid
crystals
(N*-LCs)
can
tremendously
amplify
circularly
polarized
luminescence
(CPL)
signals.
Doped
emissive
N*-LCs
have
been
substantially
explored.
However,
their
CPL
performances
still
need
to
be
improved,
mainly
due
the
unsatisfying
helical
twisting
power
(HTP)
of
commonly
used
chiral
fluorescent
dopants.
polymers
(CFHPs)
outstanding
optical
activity
and
performance.
The
present
contribution
reports
first
success
in
constructing
by
doping
CFHP
into
(5CB,
N-LCs).
assembly
structures
effectively
signals
CFHP.
Owing
high
HTP
CFHP,
selective
reflection
band
N*-LC
adjusted
fully
cover
its
emission
band.
A
nearly
pure
with
a
dissymmetry
factor
(glum
)
up
-1.87
is
realized
at
9
wt%
concentration.
Taking
advantage
mechanism,
multi-color
CPL-active
glum
are
fabricated
via
further
adding
achiral
fluorophores.
Also
noticeably,
room-temperature
phosphorescence
-1.57
achieved.
Anti-counterfeiting
application
demonstrated
exploiting
multi-mode
characteristics
created
N*-LCs.
established
strategy
for
provides
platform
future
exploring
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(42)
Опубликована: Май 22, 2023
Abstract
Aromatic
units
tethered
with
an
azo
(−N=N−)
functionality
comprise
a
unique
class
of
compounds,
known
as
molecular
photoswitches,
exhibiting
reversible
transformation
between
their
E
‐
and
Z
‐isomers
in
response
to
photo‐irradiation.
Photoswitches
have
been
explored
extensively
the
recent
past
prepare
dynamic
self‐assembled
materials,
optoelectronic
devices,
responsive
biomaterials,
more.
Most
such
materials
involve
azobenzenes
photoswitch
date,
SciFinder
lists
more
than
7000
articles
1000
patents.
Subsequently,
great
deal
effort
has
invested
improve
photo‐isomerization
efficiency
related
mesoscopic
properties
azobenzenes.
Recently,
azoheteroarenes
cyclic
azobenzenes,
arylazopyrazoles,
arylazoisoxazoles,
arylazopyridines,
diazocines,
emerged
second
generation
photoswitches
beyond
conventional
These
offer
distinct
photoswitching
behavior
which
make
them
highly
promising
candidates
for
multifaceted
applications
ranging
from
photoresponsive
photopharmacophores.
In
this
minireview,
we
introduce
structural
refinement
diazocines
summarize
state‐of‐the‐art
on
utilizing
these
building
blocks
supramolecular
assembly,
material
science
photopharmacology,
highlighting
versatile
photochemical
behavior,
enhanced
functionality,
latest
applications.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(48)
Опубликована: Авг. 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.
Advanced Materials,
Год журнала:
2023,
Номер
35(36)
Опубликована: Май 26, 2023
Liquid
crystal
is
a
state
of
matter
being
intermediate
between
solid
and
liquid.
materials
exhibit
both
orientational
order
fluidity.
While
liquid
crystals
have
long
been
highly
recognized
in
the
display
industry,
recent
decades,
provide
new
opportunities
into
cross-field
material
science
biomedicine
due
to
their
biocompatibility,
multifunctionality,
responsiveness.
In
this
review,
latest
achievements
applied
biomedical
fields
are
summarized.
The
start
made
by
introducing
basic
concepts
crystals,
then
shifting
components
as
well
functional
derived
therefrom.
After
that,
ongoing
foreseeable
applications
field
with
emphasis
put
on
several
cutting-edge
aspects,
including
drug
delivery,
bioimaging,
tissue
engineering,
implantable
devices,
biosensing,
wearable
devices
discussed.
It
hoped
that
review
will
stimulate
ingenious
ideas
for
future
generation
crystal-based
development,
artificial
implants,
disease
diagnosis,
health
status
monitoring,
beyond.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 8, 2024
Abstract
Energy‐efficient
building
materials
are
eye‐catching
for
reducing
indoor
energy
consumption
via
eliminating
electromagnetic
interference
and
pollution,
controlling
the
thermal
transfer,
promoting
sunlight
harvesting
providing
a
comfortable
living
environment.
To
realize
broadband
microwave
shielding,
elaborate
control
of
microstructures
has
showed
great
potential
research
direction.
By
composition
regulation
structure
design
with
various
dimension,
synergistic
effects
including
conductive
networks,
interfacial
polarization,
magnetic
coupling,
dipole
dielectric‐magnetic
synergy,
can
significantly
improve
(EM)
shielding
capacity.
Thermal
management
conversion,
storage,
radiation,
conduction
enormous
in
enhancing
sustainability
efficiency
future
buildings.
Smart
windows
able
to
switch
optical
transmittance
colors,
which
is
contributed
saving
energy.
Herein,
this
review,
recent
progress
management,
smart
window
field
energy‐efficient
buildings
summarized,
from
aspects
materials,
mechanisms,
scenarios.
Further,
main
bottlenecks
problems
discussed,
opportunities
further
highlighted.
Light Science & Applications,
Год журнала:
2023,
Номер
12(1)
Опубликована: Янв. 3, 2023
Abstract
With
the
development
of
optical
technologies,
transparent
materials
that
provide
protection
from
light
have
received
considerable
attention
scholars.
As
important
channels
for
external
light,
windows
play
a
vital
role
in
regulation
buildings,
vehicles,
and
aircrafts.
There
is
need
with
switchable
properties
to
prevent
or
attenuate
damage
interference
human
eye
light-sensitive
instruments
by
inappropriate
radiation.
In
this
context,
liquid
crystals
(LCs),
owing
their
rich
responsiveness
unique
properties,
been
considered
among
best
candidates
advanced
materials.
review,
we
an
overview
advances
research
on
LC-based
methods
against
light.
First,
introduce
characteristics
different
sources
requirements.
Second,
several
classes
modulation
principles
based
crystal
demonstrate
feasibility
using
them
protection.
addition,
discuss
current
strategies
applications.
Finally,
problems
shortcomings
strategies.
We
propose
suggestions
field
