Abstract
Photoreversible
color
switching
systems
(PCSSs)
exhibiting
multi‐color
responses
to
visible
light
are
favored
for
sustainable
societal
development
over
those
relying
on
ultraviolet
due
safer
operation
and
better
penetration
depth.
Here,
a
PCSS
capable
of
responsive
based
highly
photoreductive
rutile‐phase
Sn‐doped
TiO
2−x
nanoparticles
is
reported.
The
Sn‐doping
significantly
red‐shifts
the
absorption
band
region,
improving
charge
separation
transfer
efficiencies
introducing
Ti
3+
species
oxygen
vacancies
as
internal
sacrificial
electron
donors
scavenging
photogenerated
holes.
resulting
feature
exceptional
photoreduction
ability
activity,
thereby
enabling
photoreversible
various
redox
dyes
operational
under
illumination.
Furthermore,
can
be
achieved
via
overlay
effect
by
combining
different
in
one
system,
opening
door
many
advanced
applications,
demonstrated
their
successful
uses
developing
visible‐light‐driven
rewritable
light‐printing
visual
information
displays.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(22)
Опубликована: Фев. 8, 2024
Abstract
Despite
the
remarkable
progress
in
development
of
sweat
sensors,
self‐powered
sweat‐responsive
sensing
displays
that
detect
electric
signals
with
simultaneous
and
direct
visualization
is
rarely
demonstrated.
Here,
a
structural
color
(SC)
display
enabled
by
ionomer‐doped
block
copolymer
(BCP)
photonic
crystals
(PCs)
presented.
The
BCP
PC
developed
employing
cross‐linking
single‐mobile
ionomer
(SMI)
mobile
anions
anchored
to
immobile
polycations
1‐D
PC.
hydrophobic
SMI‐doped
mechanically
robust
as
well
water
temperature‐resistive,
exhibiting
concentration‐dependent
full
visible
SCs.
Moreover,
periodically
confined
harvest
triboelectric
energy,
giving
rise
high‐power
density
≈0.774
Mw
cm
−2
.
Cation‐sensitive
SC
variation
observed
PC,
allowing
containing
various
cations.
A
skin‐patchable
demonstrated
which
kirigami‐patterned
incorporated
can
withstand
up
50%
strain
during
exercise.
Sweat
from
exercise
visualized
via
measured
using
both
ionic
resistance
changes
signals.
In
addition,
integration
membrane
into
enables
quantification
sweat.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 23, 2024
Ionogels
are
promising
for
soft
iontronics,
with
their
network
structure
playing
a
pivotal
role
in
determining
performance
and
potential
applications.
However,
simultaneously
achieving
mechanical
toughness,
low
hysteresis,
self-healing,
fluorescence
using
existing
structures
is
challenging.
Drawing
inspiration
from
jellyfish,
we
propose
novel
hierarchical
crosslinking
design
situ
formation
of
hyperbranched
cluster
aggregates
(HCA)
to
fabricate
polyurea
ionogels
overcome
these
challenges.
Leveraging
the
disparate
reactivity
isocyanate
groups,
induce
HCA
through
competing
reactions,
enhancing
toughness
imparting
clustering-triggered
emission
ionogel.
This
synergy
between
supramolecular
interactions
plasticizing
effect
ionic
liquid
leads
reduced
hysteresis
Furthermore,
incorporation
NCO-terminated
prepolymer
dynamic
oxime-urethane
bonds
(NPU)
enables
self-healing
enhances
stretchability.
Our
investigations
highlight
significant
influence
on
ionogel
performance,
showcasing
robustness
including
high
strength
(3.5
MPa),
exceptional
(5.5
MJ
m
ACS Applied Polymer Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 15, 2025
Most
of
the
current
studies
on
preparation
stimulus-responsive
smart
hydrogel
textiles
are
conducted
at
fabric
level,
ignoring
direct
modulation
structure
and
properties
by
yarns.
Compared
with
smart-responsive
fabrics,
yarns
can
not
only
be
used
individually
but
also
woven
into
complex
structures
brilliant
patterns.
However,
constructing
PCs
to
prepare
a
rough
surface,
hair,
large
surface
undulations
remains
major
challenge.
In
this
study,
that
had
no
color
in
dry
state
could
quickly
show
bright
eye-catching
structural
colors
after
coming
contact
water
were
prepared.
Results
demonstrated
prepared
P(NIPA-co-St)
microspheres
exhibited
good
sphericity
monodispersibility.
The
glass-transition
temperature
increased
6.77
°C
compared
pure
PNIPA
microspheres.
Photonic
crystal
(PCH)
vibrant
structured
was
easily
assembled
when
concentration
about
8.5
wt
%
self-assembly
25
°C.
fast
response
time
excellent
rubbing
fastness,
washing
reusability.
blended
ordinary
produce
warning
textiles.
immediately
display
rainy
or
foggy
weather
without
affecting
original
pattern
climate.
This
research
provides
ideas
for
realizing
made
from
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(18), С. 10808 - 10818
Опубликована: Янв. 1, 2024
This
work
presents
a
multifunctional
MXene-composited
organohydrogel
with
high
tensile
strength,
excellent
environmental
stability,
recyclability
and
outstanding
UV-shielding
ability
for
flexible
wearable
sensors.
Nano Letters,
Год журнала:
2024,
Номер
24(26), С. 8198 - 8207
Опубликована: Июнь 21, 2024
Responsive
luminescent
materials
that
reversibly
react
to
external
stimuli
have
emerged
as
prospective
platforms
for
information
encryption
applications.
Despite
brilliant
achievements,
the
existing
fluorescent
usually
low
density
and
experience
inevitable
loss
when
subjected
mechanical
damage.
Here,
inspired
by
hierarchical
nanostructure
of
proteins
in
jellyfish,
we
propose
a
self-healable,
photoresponsive
elastomer
based
on
dynamic
interface-anchored
borate
nanoassemblies
smart
dual-model
encryption.
The
rigid
cyclodextrin
molecule
restricts
movement
guest
molecules,
enabling
long
room-temperature
phosphorescence
(0.37
s)
excitation
wavelength-responsive
fluorescence.
building
reversible
interfacial
bonding
between
polymer
matrix
together
with
their
nanoconfinement
effect
endows
nanocomposites
excellent
performances
(tensile
strength
15.8
MPa)
superior
functional
recovery
capacities
after
Such
supramolecular
interfaces
enable
simultaneous
material
functionalization
self-healing,
paving
way
development
advanced
materials.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(12), С. 15096 - 15106
Опубликована: Март 13, 2024
With
the
progress
of
forgery
and
decryption,
traditional
encryption
technology
is
apparent
not
enough,
which
strongly
requires
development
advanced
multidimensional
strategies
technologies.
Photo-stimuli
responsive
fluorescent
materials
are
promising
as
candidate
for
information
encryption.
Here,
we
have
reported
new
photo-stimuli
by
encapsulating
photochromic
molecules
spiropyrans
(SPs)
into
naphthalimide-functionalized
silica
aerogels.
By
introducing
different
modification
groups
(dimethylamino)
1,8-naphthalimide,
obtained
two
kinds
aerogels
that
emit
blue
green
colors.
The
aerogels/dye
composite
exhibits
a
(dimethylamino-modified
aerogel
showing
green)
emission
from
naphthalimide
at
450
nm
(520
nm)
red
around
650
SP.
Under
exposure
to
ultraviolet
light,
SP
gradually
transformed
merocyanine
(MC)
form,
strong
absorption
band
appeared
near
540
nm.
At
time,
fluorescence
resonance
energy-transfer
(FRET)
process
occurred
between
MC
isomer.
As
irradiation
time
extended,
color
changes
continuously
(green)
through
FRET
process.
Using
dependence
fluorescence,
dynamic
patterns
multiple
codes
were
successfully
developed
based
on
these
functionalized
This
work
has
provided
important
guidance
designing
materials.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(21)
Опубликована: Март 28, 2024
Abstract
Stress
response,
an
intricate
and
autonomously
coordinated
reaction
in
living
organisms,
holds
a
reversible,
multi‐path,
multi‐state
nature.
However,
existing
stimuli‐responsive
materials
often
exhibit
single‐step
monotonous
reactions
due
to
the
limited
integration
of
structural
components.
Inspired
by
cooperative
interplay
extensor
flexor
cells
within
Mimosa's
pulvini,
we
present
hydrogel
with
differentiated
hydrogen‐bonding
(H‐bonding)
networks
designed
enable
biological
stress
response.
Weak
H‐bonding
domains
resemble
cells,
confined
hydrophobic
network
stabilized
strong
clusters
(acting
like
cells).
Under
external
force,
are
disrupted,
facilitating
water
diffusion
from
bottom
layer
enabling
transient
expansion
pressure
gradient
along
thickness
direction.
Subsequently,
diffuses
upward,
gradually
equalizing
pressure,
while
weak
undergo
elastic
deformation.
Consequently,
undergoes
sequence
reversible
pluralistic
motion
responses,
similar
touch‐triggered
Intriguingly,
it
exhibits
stress‐dependent
color
shifts
under
polarized
light,
highlighting
its
potential
for
applications
time‐sensitive
“double‐lock”
information
encryption
systems.
This
work
achieves
response
inspired
natural
tissues
using
simple
hydrogel,
paving
way
substantial
advancements
development
intelligent
soft
robots.
