ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(50), P. 58955 - 58966
Published: Dec. 5, 2023
There
is
still
significant
room
for
improvement
when
combining
structural
color
with
fluorescence
patterns
in
dual
anti-counterfeiting
and
dynamic
labels.
In
this
study,
we
achieved
breakthroughs
under
conditions
by
using
the
properties
of
hydrogen-bonded
cholesteric
liquid
crystal
(HBCLC)
them
dye
spiropyran
(SP)
to
create
patterns.
The
label
can
only
display
storage
information
after
meeting
humidity
ultraviolet
light
(UV)
has
functions
encryption
repeated
reading.
We
adjusted
center
reflection
band
HBCLC
film
transition
from
red
infrared
40–90%
relative
(RH)
used
it
as
a
background
draw
SP.
Since
these
dyes
switch
between
merocyanine
(MC)
(red)
SP
(colorless)
UV
visible
conditions,
combined
HBCLC,
orthogonal
was
achieved.
Additionally,
adsorption
SP,
films
same
range
increased
around
160
nm
260
nm,
greatly
improving
sensitivity
changes.
Furthermore,
emit
fluorescence,
demonstrating
polymorphic
feature,
which
complexity
pattern
significance
storage.
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.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(46)
Published: Oct. 4, 2023
Smart
fluorescent
materials
that
can
respond
to
environmental
stimuli
are
of
great
importance
in
the
fields
information
encryption
and
anti-counterfeiting.
However,
traditional
usually
face
problems
such
as
lack
tunable
fluorescence
insufficient
surface-adaptive
adhesion,
hindering
their
practical
applications.
Herein,
inspired
by
glowing
sucker
octopus,
we
present
a
novel
strategy
fabricate
reversible
eutectogel
with
high
transparency,
adhesive
self-healing
performance
for
conformal
Using
anthracene
luminescent
unit,
exhibits
photoswitchable
therefore
be
reversibly
written/erased
patterns
non-contact
stimulation.
Additionally,
different
from
mechanically
irreversible
adhesion
via
glue,
adhere
various
irregular
substrates
over
wide
temperature
range
(-20
65
°C)
conformally
deform
more
than
1000
times
without
peeling
off.
Furthermore,
exploiting
transparency
good
stretchability
eutectogel,
dual
achieved
under
UV
stretching
conditions
further
improve
security
level.
This
study
should
provide
promising
future
development
advanced
intelligent
anti-counterfeiting
materials.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(48)
Published: Oct. 11, 2023
Abstract
Information
security
has
gained
increasing
attention
in
the
past
decade,
leading
to
development
of
advanced
materials
for
anti‐counterfeiting,
encryption
and
instantaneous
information
display.
However,
it
remains
challenging
achieve
high
with
simple
procedures
low‐energy
stimuli.
Herein,
a
series
strain/temperature‐responsive
liquid
crystal
elastomers
(LCEs)
are
developed
dual‐modal,
multi‐level
real‐time,
rewritable
transient
The
as‐prepared
polydomain
LCEs
can
change
from
an
opaque
state
transparent
under
strain
or
temperature
stimuli,
transition
strains
temperatures
highly
dependent
on
concentration
long‐chain
flexible
spacers.
encrypted
by
different
LCE
inks
be
decrypted
specific
temperatures,
protection
security.
Furthermore,
combination
phase
photothermal
effect
multi‐walled
carbon
nanotubes
(MWCNTs),
we
achieved
repeatable
display
using
near‐infrared
(NIR)
light
as
pen
writing.
This
study
provides
new
insight
into
versatility
broad
applications.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(28)
Published: May 14, 2024
Abstract
Constructing
an
anti‐counterfeiting
material
with
non‐interference
dual
optical
modes
is
effective
way
to
improve
information
security.
However,
it
remains
challenging
achieve
multistage
secure
encryption
due
the
limited
stimulus
responsiveness
and
color
tunability
of
current
dual‐mode
materials.
Herein,
a
hydrogel
both
independently
tunable
structural
fluorescent
colors
toward
encryption,
reported.
In
this
system,
rigid
lamellar
structure
poly(dodecylglyceryl
itaconate)
(pDGI)
formed
by
shear
flow‐induced
self‐assembly
provides
restricted
domains
wherein
monomers
undergo
polymerization
form
network,
producing
color.
The
introduction
monomer
6‐acrylamidopicolinate
(6APA)
as
complexation
site
possibility
formation.
hydrogel's
angle‐dependent
can
be
controlled
adjusting
crosslinking
density
water
content.
Additionally,
fluorescence
modulated
ratio
lanthanide
ions.
Information
displayed
separately
in
different
channels
synergistically
overlayed
read
ultimate
message.
Thus,
system
based
on
devised
through
programed
decryption
process.
This
strategy
holds
tremendous
potential
platform
for
encrypting
safeguarding
valuable
authentic
field
anti‐counterfeiting.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(25)
Published: Feb. 14, 2024
Abstract
Microfluidic
chips
play
crucial
roles
while
lack
satisfactory
controllability
and
comprehensive
functionality.
Inspired
by
biological
systems,
this
study
proposes
a
method
utilizing
rolling
microneedles
(RMNs)
to
generate
muti‐structured
templates,
realizing
photonic
crystal
membrane
(PC)
based
meta
microfluidic
microneedle
chip
(MMM)
for
efficient
wound
management.
This
approach
offers
advantages
in
terms
of
speed
cost‐effectiveness,
achieving
dual‐sided
permeation
patterned
design
directly
RMNs
at
desired
locations,
serving
as
both
template
tools
fabrication.
The
integration
with
PC
results
the
3D
multilayer
channels,
effectively
addressing
issues
related
spontaneous
fluid
flow.
As
reaches
membrane,
it
generates
distinctive
structural
colors
exhibits
fluorescence
enhancement,
enabling
monitoring
inflammatory
factors
mouse
wounds
facilitating
In
summary,
preparation
involving
paves
way
control
chips.
bioinspired
patch
holds
significant
potential
not
only
management
but
also
areas
such
clinical
drug
delivery
point‐of‐care
testing
(POCT).
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Feb. 29, 2024
Abstract
Structurally
colored
composite
films,
composed
of
orderly
arranged
colloids
in
polymeric
matrix,
are
emerging
flexible
optical
materials,
but
their
production
is
bottlenecked
by
time-consuming
procedures
and
limited
material
choices.
Here,
we
present
a
mild
approach
to
producing
large-scale
structurally
films
shearing
supramolecular
composites
polymers
with
interactions.
Leveraging
dynamic
connection
dissociation
interactions,
force
stretches
the
polymer
chains
drags
migrate
directionally
within
matrix
reduced
viscous
resistance.
We
show
that
meter-scale
iridescence
color
can
be
produced
several
minutes
at
room
temperature.
Significantly,
tunability
diversity
interactions
allow
this
extendable
various
commonly-used
polymers.
This
study
overcomes
traditional
limitations
manufacturing
method
opens
an
avenue
for
mildly
ordered
commonly-available
materials
via
strategies.
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: April 17, 2024
Abstract
Stimuli‐responsive
structural‐color
materials
have
received
widespread
attention
in
information
encryption
due
to
the
significant
color
changes
under
different
stimuli.
However,
trade‐off
between
capacity
of
input,
security
level,
cost,
and
large‐area
manufacturing
greatly
limits
application
structural
colors
encryption.
Herein,
dynamic
high‐capacity
high‐resolution
are
achieved
by
implementing
printed
total
internal
reflection
(TIR)
computer‐aided
image
recognition.
The
TIR
microstructures
prepared
with
relative
humidity
(RH)
responsive
polymer,
which
form
a
heterogeneous
wettability
system,
can
exhibit
vibrant
variation
humidity.
As
implemented
RH
is
changed,
will
expand
or
shrink
precisely,
enabling
full‐color
modulation
across
visible
light
range.
With
change,
each
pixel
be
specifically
encoded,
allowing
for
this
encrypt
within
same
pattern
at
RHs.
Furthermore,
This
study
precisely
integrates
tremendous
pixels
easily
prepare
various
encrypted
patterns,
guarantee
input
low‐cost
way.
Moreover,
through
computer
programming
algorithm
reading,
patterns
decoded
decrypted
real‐time,
thus
offering
great
potential
further
encryption,
anti‐counterfeiting,
multiplexing
encoding,
data
storage.
