Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Май 24, 2024
Abstract
Ideal
hydrogel
fibers
with
high
toughness
and
environmental
tolerance
are
indispensable
for
their
long-term
application
in
flexible
electronics
as
actuating
sensing
elements.
However,
current
exhibit
poor
mechanical
properties
instability
due
to
intrinsically
weak
molecular
(chain)
interactions.
Inspired
by
the
multilevel
adjustment
of
spider
silk
network
structure
ions,
bionic
elaborated
ionic
crosslinking
crystalline
domains
constructed.
Bionic
show
a
162.25
±
21.99
megajoules
per
cubic
meter,
comparable
that
silks.
The
demonstrated
structural
engineering
strategy
can
be
generalized
other
polymers
inorganic
salts
fabricating
broadly
tunable
properties.
In
addition,
introduction
salt/glycerol/water
ternary
solvent
during
constructing
structures
endows
anti-freezing,
water
retention,
self-regeneration
This
work
provides
ideas
fabricate
stability
electronics.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(32)
Опубликована: Апрель 22, 2024
Abstract
High
mechanical
strength,
excellent
toughness,
low
hysteresis,
and
robust
resilience
are
of
great
importance
for
stretchable
conductive
hydrogels
(CHs)
to
heighten
their
reliabilities
self‐powered
sensing
applications.
However,
it
still
remains
challenging
simultaneously
obtain
the
mutually
exclusive
performances.
Herein,
an
intrinsically
adhesive
hydrogel
is
fabricated
by
one‐step
radical
polymerization
acrylamide
(AAm),
three
hydroxy
groups
together
clustered‐N‐[tris(hydroxymethyl)methyl]acrylamide
(THMA),
cationic
1‐Butyl‐3‐Vinylimidazolium
Bromide
(ILs)
dissolved
in
core‐shell
structurally
dispersed
PEDOT:PSS
(PP)
solution.
Owing
abundant
clustered
hydrogen
bonds,
electrostatic
interactions
between
PILs
chains
anionic
PSS
shells,
polymer
chain
entanglements,
CHs
feature
superior
properties
with
a
high
tensile
strength
(0.25
MPa),
fracture
strain
(1015%),
toughness
(1.22
MJ
m
‐3
),
energy
36.5
kJ
‐2
extremely
hysteresis
(5%),
display
fatigue
resistance.
As
result,
indicate
gauge
factor
up
10.46,
broad
range
(1‐900%)
pressure
(0.05‐100
kPa),
fast
responsive
rate,
thus
qualifying
monitoring
reliably
accurately
large
tiny
human
movements
daily
life.
Moreover,
hydrogel‐assembled
triboelectric
nanogenerators
(TENGs)
exhibit
stable
electrical
output
performances,
which
greatly
promising
flexible
wearable
electronics.
ACS Nano,
Год журнала:
2024,
Номер
18(29), С. 18980 - 18991
Опубликована: Июль 8, 2024
Eutectogels
have
garnered
considerable
attention
for
the
development
of
wearable
devices,
owing
to
their
inherent
mechanical
elasticity,
ionic
conductivity,
affordability,
and
environmental
compatibility.
However,
low
conductivity
existing
eutectogels
has
impeded
progression
in
electronic
applications.
Here,
we
report
a
zwitterionic
eutectogel
with
an
impressive
up
15.7
mS
cm–1.
The
incorporation
groups
into
creates
ample
mobile
charges
by
dissociating
cation
anion
solvents,
thereby
yielding
exceptional
conductivity.
Moreover,
abundant
electrostatic
hydrogen
bonding
interactions
within
endow
it
prominent
self-healing
adhesive
properties.
By
integrating
roughly
patterned
polydimethylsiloxane
film,
successfully
constructed
triboelectric
nanogenerator
(TENG)
maximum
output
power
density
112
mW
m–2.
This
TENG
is
capable
generating
stable
electrical
signals
even
extreme
temperature
conditions
ranging
from
−80
100
°C
effectively
powering
devices.
Furthermore,
assembled
displays
high
sensitivity
as
self-powered
sensor,
enabling
real-time
precise
monitoring
derived
human
motions.
study
establishes
promising
approach
sustainable
multifunctional
flexible
electronics
that
are
resilient
environments.
