Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 14, 2025
Producing
thermoplastic
room
temperature
phosphorescent
(RTP)
materials
with
closed-loop
recyclability
from
natural
sources
is
an
attractive
approach
but
hard
to
achieve.
Here,
the
study
develops
such
RTP
materials,
Poly(TA)/Cell,
by
thermally
polymerizing
thioctic
acid
in
presence
of
cellulose.
Specifically,
polymerized
poly(TA)
forms
strong
hydrogen
bonding
interactions
CNF,
promoting
formation
molecular
clusters
between
oxygen-containing
units.
The
as-formed
generate
humidity-
and
excitation-sensitive
green
emission.
Red
afterglow
emission
also
obtained
integrating
Poly(TA)/Cell
together
Rhodamine
B
(RhB)
via
energy
transfer
process.
Attributed
properties,
as-obtained
can
be
molded
into
flexible
shapes
uncompromised
performance.
Moreover,
owing
alkali-cleavable
properties
disulfide
bond
cellulose
successfully
recycled
a
yield
92.3%
81.5%,
respectively.
As
demonstrator
for
potential
utility,
used
fabricate
information
encryption.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 26, 2024
Abstract
Compared
to
conventional
gels,
eutectogels
encompassing
deep
eutectic
solvents
(DESs)
circumvent
the
shortboards
including
poor
temperature
resistance,
high
cost,
and
undesired
toxicity.
However,
existing
suffer
weak
intra‐
interchain
interactions,
which
culminates
in
vanishing
autofluorescence,
mechanic
feeble
adhesion.
Although
myriad
strategies
have
been
proposed
boost
polymer/polymer
interactions
within
processes
are
time‐consuming,
not
suitable
for
mass
production
or
emergent
deployment.
Herein,
deal
with
it,
a
facile
solvation
chemistry
is
leveraged
build
dynamic
rigid
network
via
incorporating
active
polymer
backbones
DESs.
Within
these
eutectogels,
DESs
play
magnet‐like
role,
physically
cluster
chains
together
multiple
noncovalent
forces,
thus
intensifying
DESs/polymer
interactions.
This
bestows
rare
autofluorescence
unprecedentedly
strength,
toughness,
adhesion
among
reported
analogues,
even
harsh
conditions.
Moreover,
mechanism
of
fully
scrutinized
first
time.
It
believed
that
this
strategy
can
be
easily
expanded
orchestrations
other
soft
materials.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 3, 2024
Abstract
Organogel
materials
are
vital
for
impact
or
shock
resistance
because
of
their
highly
tailored
dynamic
properties.
However,
concurrently
achieving
excellent
anti‐impact
and
damping
performances,
high
stability,
self‐healing
properties
is
challenging.
Herein,
a
novel
intelligent
protective
organogel
(IPO)
comprising
boronic
ester
containing
poly(urethane–urea)
as
the
network
skeleton
with
matching
mesh
size
synthesized,
precisely
entraps
hyperbranched
fluid
used
bulky
solvent
via
steric
hindrance.
The
IPO
exhibits
ability,
responsiveness
(a
1950‐fold
increase
in
flow
stress
under
various
speeds),
energy
dissipation
(the
loss
factor
>0.8
from
10
−4
to
4
Hz).
maintains
its
mechanical
during
hot
pressing
hydrolysis,
exhibiting
stability.
Furthermore,
omnibearing
protection.
When
coating,
dissipates
force
by
87%
89%
control
upon
passive
active
impact,
respectively.
pad,
it
attenuates
91%
amplitude
high‐frequency
vibrations.
This
study
offers
perspective
on
synthesis
sterically
hindered
provides
valuable
insights
into
development
next‐generation
that
exhibit
vibration
resistance.
Abstract
Cellulose,
the
most
abundant
natural
polymer,
is
characterized
by
its
unique
molecular
architecture,
which
enables
strategic
engineering
into
functional
gel
materials
such
as
ionogels
and
hydrogels.
Despite
significant
advancements
in
cellulose
technology,
especially
area
of
ionogels,
challenges
remain
fully
exploring
their
properties
broadening
applications.
This
review
examines
development
evolution
gels,
focusing
on
new
directions
molecular‐scale
design
for
these
materials.
Strategies
to
enhance
mechanical
performance,
ionic
conductivity,
self‐healing
gels
are
systematically
outlined,
emphasizing
regulation
assembly,
creation
dynamic
bonds,
switchable
supramolecular
networks.
Furthermore,
emerging
applications
electronic
skins,
flexible
electronics,
smart
devices,
biomedical
science
discussed.
Performance
targets
trends
identified,
highlighting
potential
role
artificial
intelligence
predicting
accelerating
process.
work
proposes
feasible
scalable
strategies
aimed
at
improving
gels.
Self-healing
hydrogels
can
autonomously
repair
damage,
enhancing
their
performance
stability
and
broadening
applications
as
soft
devices.
Although
the
incorporation
of
dynamic
interactions
enhances
self-healing
capabilities,
it
simultaneously
weakens
hydrogels’
strength.
External
stimuli
such
heating,
while
accelerating
healing
process,
may
also
lead
to
dehydration.
Developing
a
stable
strategy
that
combines
rapid
high
mechanical
strength
is
challenging.
Here,
we
introduce
“salt-welding”
for
high-strength
with
room
temperature
self-healing.
This
achieved
through
borate
ester
bonds
in
salt-responsive
poly(methacrylamide)
hydrogel.
The
process
involves
“salt-fusion”
convert
fractures
into
viscous
liquid
swift
healing,
followed
by
“salt-concretion”
toughen
achieve
posthealing
23
megapascals
95
minutes
at
temperature,
near
100%
efficiency.
Leveraging
tunable
rate,
hydrogel
be
tailored
reparable
wear-resistant
material
damping
device.
Advanced Materials,
Год журнала:
2024,
Номер
36(48)
Опубликована: Окт. 14, 2024
Developing
gel
materials
with
tunable
frictional
properties
is
crucial
for
applications
in
soft
robotics,
anti-fouling,
and
joint
protection.
However,
achieving
reversible
switching
between
extreme
sticky
slippery
states
remains
a
formidable
challenge
due
to
the
opposing
requirements
energy
dissipation
on
surfaces.
Herein,
self-adaptive
bicontinuous
fluorogel
introduced
that
decouples
lubrication
adhesion
at
varying
temperatures.
The
phase-separated
comprises
fluorinated
lubricating
phase
stiff
yet
thermal-responsive
load-bearing
phase.
At
ambient
temperature,
exhibits
highly
surface
owing
low-energy-dissipating
layer,
demonstrating
an
ultralow
friction
coefficient
of
0.004.
Upon
heating,
transitions
into
dissipating
state
via
hydrogen
bond
dissociation,
concurrently
releasing
adhesive
dangling
chains
make
strength
≈362
kPa.
This
approach
provides
promising
foundation
creating
advanced
adaptive
on-demand
self-adhesive
self-lubricating
capabilities.
Advanced Materials,
Год журнала:
2024,
Номер
36(47)
Опубликована: Окт. 6, 2024
Abstract
Smart
textiles
with
a
high
level
of
personal
protection,
health
monitoring,
physical
comfort,
and
wearing
durability
are
highly
demanded
in
clothing
for
harsh
application
scenarios,
such
as
modern
sportswear.
However,
seamlessly
integrating
smart
system
has
been
long‐sought
but
challenging
goal.
Herein,
based
on
coaxial
electrospinning
techniques,
non‐woven
textile
(Smart‐NT)
integrated
impact
resistance
is
developed,
multisensory
functions,
radiative
cooling
effects.
This
Smart‐NT
comprised
core‐shell
nanofibers
an
ionic
conductive
polymer
sheath
impact‐stiffening
core.
The
soft
textile,
thickness
only
800
µm,
can
attenuate
over
60%
force,
sense
pressure
stimulus
sensitivity
up
to
201.5
kPa
−1
,
achieve
temperature
sensing
resolution
0.1
°C,
reduce
skin
by
≈17
°C
under
solar
intensity
1
kW
m
−2
.
In
addition,
the
stretchable
durable
robust,
retaining
its
multifunction
features
10
000
bending
multiple
washing
cycles.
Finally,
scenarios
demonstrated
real‐time
body
comfort
sportswear
outdoor
sports.
strategy
opens
new
avenue
seamless
integration
systems.
Macromolecular Rapid Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 15, 2025
Recent
advancements
in
inverse
vulcanization
have
led
to
the
development
of
sulfur-rich
polymers
with
diverse
applications.
However,
progress
is
constrained
by
harsh
high-temperature
reaction
conditions,
limited
applicability,
and
generation
hazardous
H2S
gas.
This
study
presents
an
induced
IV
method
utilizing
selenium
octanoic
acid,
yielding
sulfur-selenium
rich
full
atom
economy,
even
at
a
low-temperatures
100-120
°C.
The
resultant
exhibit
exceptional
optical
properties:
1)
A
high
refractive
index,
reaching
1.89
when
total
content
65%;
2)
Excellent
UV
shielding
capabilities,
blocking
ultraviolet
rays
while
permitting
95.1-98.6%
transmission
visible
light;
3)
Notable
transparency,
polymer
films
0.94
mm
thickness
exhibiting
good
transparency
under
natural
light.
materials
also
demonstrate
environmental
stability
prolonged
exposure
hot
or
cold
conditions.
Additionally,
display
adhesive
strength
as
evidenced
two
adhered
glass
slides
material
lifting
weights
up
20
kg
without
any
displacement
their
glued
area.
These
properties
provide
new
avenue
for
be
implemented
high-precision
instruments
unique
characteristics.
National Science Review,
Год журнала:
2025,
Номер
12(4)
Опубликована: Фев. 27, 2025
ABSTRACT
Thermal-stiffening
hydrogels
exhibit
a
dramatic
soft-to-stiff
transition
upon
heating,
making
them
ideal
candidates
for
temperature-triggered
self-protection
and
shape
memory
applications.
However,
their
practical
use
is
still
hampered
by
slow
recovery
process
(generally
>30
min)
during
cooling,
attributed
to
sluggish
mass
diffusion
delayed
phase
dissolution.
Herein,
we
present
high-entropy
separation
design
significantly
accelerate
the
dynamics
of
these
materials.
We
demonstrate
this
concept
using
thermal-stiffening
poly(calcium
acrylate)-based
copolymer
hydrogel
incorporating
hydrophilic
units.
Mechanistically,
units
disrupt
dense
packing
clusters,
creating
topological
structure
with
low
energy
barrier
rapid
diffusion.
This
approach
retains
impressive
response
760-fold
increase
in
storage
modulus,
while
dramatically
reducing
characteristic
time
merely
28
s.
anticipate
strategy
be
broadly
applicable
designing
modulus-adaptive
materials
fast
switching
dynamics.
