Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
53(2), P. 606 - 623
Published: Dec. 15, 2023
This
review
highlights
the
recent
advances
and
discusses
challenges
perspectives
of
stimulus-responsive
polymer
(SRP)-based
information-storage
materials,
which
exhibit
multi-mode
or
multi-level
anti-counterfeiting
performance.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(2), P. 2740 - 2750
Published: Jan. 6, 2024
Fluorescent
photonic
crystals
(FPCs)
are
ideal
candidates
for
regulating
dyes'
fluorescence
through
their
unique
band
gaps
(PBGs).
However,
challenges,
including
the
lack
of
dynamic
regulation
fluorescence,
dye
release
in
solvents,
and
instability,
dramatically
limit
practical
applications.
Here,
we
report
mechanochromic
solvomechanochromic
rhodamine
B
(RhB)-based
FPCs
with
photoluminescence
(PL)
by
stretching
swelling,
brilliant
fluorescent
structural
colors,
no
RhB
solvents.
The
force/solvent-responsive
nonclose-packing
structures
were
fabricated
(1)
preparing
RhB-silica
particles
combining
click
chemistry
cohydrolysis
processes
(2)
self-assembling
these
poly(ethylene
glycol)
phenyl
ether
acrylate
followed
a
photopolymerization.
Maximal
PL
inhibition
(37%,
strain
6.8%)
enhancement
(150%,
swelling
time
8
min)
gained
when
PBGs
blue
edges
precisely
adjusted
to
peak
position,
respectively.
Compared
stretching,
is
more
efficient
swelling.
These
characteristics
benefit
from
rational
design
combination
compositions,
chemical
bonds,
nonclosely
packed
micro/nanostructures,
solvents
Moreover,
have
been
used
encrypt
patterns,
which
display
background/strain/angle/UV-dependent
color
contrasts,
showing
potential
applications
multilevel
anticounterfeiting,
optical
devices,
wireless
sensors,
etc.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 15, 2024
Abstract
Fabricating
photonic
crystals
(PCs)
with
dynamic
multi‐stimuli‐responsive
structural
colors,
recordable
and
self‐healable
properties
is
significant
for
their
emerging
applications,
yet
remains
a
big
challenge.
Here,
an
all‐in‐one
multifunctional
PC
(MFPC)
film
outstanding
mechanochromic,
thermochromic,
solvatochromic,
color/shape‐recordable,
self‐healable,
adhesive
functions
designed
prepared
by
simply
non‐close‐assembling
silica
particles
into
the
unique
2‐[[(Butylamino)carbonyl]oxy]ethyl
acrylate
(BCOEA)
followed
photopolymerization.
The
success
mainly
due
to
rational
combination
of
non‐close‐packing
structures
BCOEA's
characteristics,
including
its
urethane
groups
numerous
sacrificial
hydrogen
bonds,
temperature‐dependent
refractive
index,
swellable
deformable
polymer
network,
as
well
low
glass‐transition
temperature.
MFPC's
hue
color
saturation
can
be
reversibly
dynamically
modulated
strain/pressure/solvents
temperature,
respectively,
thereby
realizing
visually
spectrally
sensing
these
stimuli.
More
interestingly,
color‐responsiveness
combined
other
endows
MFPCs
fascinating
multilayer
optical
filters,
inkless
printing,
reconfigurable
multicolor
patterns,
stretching‐based
anti‐counterfeiting,
etc.
This
work
offers
new
perspective
designing
next‐generation
smart
materials
will
facilitate
all‐round
applications.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: June 18, 2024
Abstract
Stretching
elastic
materials
containing
nanoparticle
lattices
is
common
in
research
and
industrial
settings,
yet
our
knowledge
of
the
deformation
process
remains
limited.
Understanding
how
such
reconfigure
critically
important,
as
changes
microstructure
lead
to
significant
alterations
their
performance.
This
understanding
has
been
extremely
difficult
achieve
due
a
lack
fundamental
rules
governing
rearrangements.
Our
study
elucidates
physical
processes
underlying
mechanisms
three-dimensional
lattice
transformations
polymeric
photonic
crystal
from
0%
over
200%
strain
during
uniaxial
stretching.
Corroborated
by
comprehensive
experimental
characterizations,
we
present
analytical
models
that
precisely
predict
both
structures
macroscale
deformations
throughout
stretching
process.
These
reveal
matrix
polymer
jointly
determine
resultant
structures,
which
breaks
original
structural
symmetry
profoundly
dispersion
bandgaps.
induces
shifting
main
pseudogap
structure
out
1st
Brillouin
zone
merging
different
points.
Evolutions
multiple
bandgaps
potential
optical
singularities
with
strain.
work
sets
new
benchmark
for
reconfiguration
soft
material
may
lay
groundwork
stretchable
topological
crystals.
Advanced Photonics Research,
Journal Year:
2024,
Volume and Issue:
5(8)
Published: Feb. 13, 2024
Printable
colloidal
photonic
crystals
(CPCs)
with
unique
bandgaps
and
elaborate
shapes
have
attracted
significant
interest
due
to
their
characteristics,
such
as
simplicity
of
fabrication,
adjustable
structural
colors,
photobleaching
resistance,
stimulus‐responsiveness.
In
this
review,
strategies
for
printing
CPC
patterns,
including
direct
use
CPCs
inks,
region‐selective
modification
on
responsive
(solvent,
force,
temperature)
papers,
combined
lithography,
are
first
summarized.
Second,
based
the
advantages
technology,
applications
in
color
displays,
coatings,
sensors,
anticounterfeiting
labels,
information
storage,
discussed
detail.
Finally,
current
challenges
outlook
regarding
technology
proposed.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(12), P. 15308 - 15321
Published: March 13, 2024
Colloidal
photonic
composites
(CPCs)
are
unique
optical
materials
that
combine
flexible
and
responsive
polymers
with
colloidal
crystals,
they
have
promising
applications
in
colorful
displays,
anticounterfeiting,
visual
sensors.
However,
conventional
self-assembly
strategies
for
constructing
CPCs
via
solvent
evaporation
faced
limitations
due
to
the
meticulous
regulation
required
during
process
typically
long
preparation
durations.
Here,
we
present
an
external
force
method
achieve
a
long-range
ordered
arrangement
by
hot-pressing
poly(2-[[(butylamino)carbonyl]oxy]ethyl
acrylate
(PBCOE))
brush-grafted
silica
particles
(SiO2-g-PBCOE).
We
show
conditions
(i.e.,
temperature
pressure)
volume
fraction
(φsilica)
of
SiO2-g-PBCOE
play
crucial
roles
determining
their
ordering
properties.
By
optimization
up
100
°C
pressure
5
MPa,
φsilica
20.3%
can
be
achieved.
For
effect
structural
features,
our
findings
reveal
featuring
higher
more
prone
obtain
compared
lower
under
at
relatively
low
(50
MPa),
which
is
mainly
attributed
chain
entanglement
hydrogen
bonding
interactions
induced
grafted
longer
polymer
brushes,
leading
additional
energy
inputs
weakening
ordering.
Significantly,
critical
(φc)
discerned,
strongly
influencing
properties
hot-pressed
films.
Specifically,
film
29.3%
displays
enhanced
characterized
intensified
reflection
peaks,
narrowed
full
width
half-maximum
(FWHM),
brilliant
colors.
Notably,
this
work,
mechanism
hot-pressing-driven
core–shell
particle
key
factors
affecting
particles,
i.e.,
hydrogen-bonding
interactions,
role
obtaining
controllable
structures.
Moreover,
angle-dependent
color
observed
content
attributes
highly
arrangement,
while
films
exhibit
mechanochromic
interactions.
This
work
provides
valuable
insights
into
rapid
construction
establishes
solid
foundation
force-assisted
particles.
