ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(34), P. 40975 - 40990
Published: Aug. 16, 2023
Conductive
hydrogels
have
attracted
tremendous
interest
in
the
construction
of
flexible
strain
sensors
and
triboelectric
nanogenerators
(TENGs)
owing
to
their
good
stretchability
adjustable
properties.
Nevertheless,
how
simultaneously
achieve
high
transparency,
self-healing,
adhesion,
antibacterial,
anti-freezing,
anti-drying,
biocompatibility
properties
through
a
simple
method
remains
challenge.
Herein,
transparent,
freezing-tolerant,
multifunctional
organohydrogel
(PAOAM-PDO)
as
electrode
for
TENGs
was
constructed
free
radical
polymerization
1,3-propanediol
(PDO)/water
binary
solvent
system,
which
oxide
sodium
alginate,
aminated
gelatin,
acrylic
acid,
AlCl3
were
used
raw
materials.
The
obtained
PAOAM-PDO
exhibited
transparency
(>90%),
adhesiveness,
antibacterial
property,
conductivity
(1.13
S/m),
long-term
environmental
stability.
introduction
PDO
endowed
with
freezing
resistance
low
point
-60
°C,
could
serve
protective
skin
barrier
prevent
frostbite
at
temperature.
be
assembled
monitor
heterogeneous
human
movements
sensitivity
(gauge
factor
7.05,
=
233%).
Meanwhile,
further
fabricated
TENG
"sandwich"
structure
single
mode.
Moreover,
resulting
achieved
electrical
outputs
hand
tapping
served
self-powered
device
light
light-emitting
diodes.
This
work
displays
feasible
strategy
build
environment-tolerant
organohydrogels,
possess
potential
applications
wearable
electronics
devices.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
35(14)
Published: Aug. 29, 2022
Abstract
Flexible
electronics
is
an
emerging
field
of
research
involving
multiple
disciplines,
which
include
but
not
limited
to
physics,
chemistry,
materials
science,
electronic
engineering,
and
biology.
However,
the
broad
applications
flexible
are
still
restricted
due
several
limitations,
including
high
Young's
modulus,
poor
biocompatibility,
responsiveness.
Innovative
aiming
for
overcoming
these
drawbacks
boost
its
practical
application
highly
desirable.
Hydrogel
a
class
3D
crosslinked
hydrated
polymer
networks,
exceptional
material
properties
render
it
as
promising
candidate
next
generation
electronics.
Here,
latest
methods
synthesizing
advanced
functional
hydrogels
state‐of‐art
hydrogel‐based
in
various
fields
reviewed.
More
importantly,
correlation
between
hydrogel
device
performance
discussed
here,
have
better
understanding
development
by
using
environmentally
responsive
hydrogels.
Last,
perspectives
on
current
challenges
future
directions
multifunctional
provided.
Small,
Journal Year:
2021,
Volume and Issue:
18(5)
Published: Oct. 17, 2021
Abstract
Conductive
hydrogels
can
be
prepared
by
incorporating
various
conductive
materials
into
polymeric
network
hydrogels.
In
recent
years,
have
been
developed
and
applied
in
the
field
of
strain
sensors
owing
to
their
unique
properties,
such
as
electrical
conductivity,
mechanical
self‐healing,
anti‐freezing
properties.
These
remarkable
properties
allow
hydrogel‐based
show
excellent
performance
for
identifying
external
stimuli
detecting
human
body
movement,
even
at
subzero
temperatures.
This
review
summarizes
application
fabrication
working
different
modes.
Finally,
a
brief
prospectus
development
future
is
provided.
Advanced Functional Materials,
Journal Year:
2021,
Volume and Issue:
31(24)
Published: April 8, 2021
Abstract
Conductive
hydrogels
(CHs)
have
been
highlighted
in
the
design
of
flexible
strain
sensors
and
stretchable
triboelectric
nanogenerators
(TENGs)
on
basis
their
excellent
physicochemical
properties
such
as
large
stretchability
high
conductivity.
Nevertheless,
incident
freezing
drying
behaviors
CHs
by
using
water
solvent
dispersion
medium
limit
application
scopes
significantly.
Herein,
an
environment
tolerant
ultrastretchable
organohydrogel
is
demonstrated
a
simple
solvent‐replacement
strategy,
which
partial
as‐synthesized
polyacrylamide/montmorillonite/carbon
nanotubes
hydrogel
replaced
with
glycerol,
leading
to
temperature
toleration
(−60
60
°C)
good
stability
(30
days
under
normal
environment)
without
sacrificing
The
exhibits
ultrawide
sensing
range
(0–4196%)
sensitivity
8.5,
enabling
effective
detection
discrimination
human
activities
that
are
gentle
or
drastic
various
conditions.
Furthermore,
assembled
single‐electrode
TENG,
displays
energy
harvesting
ability
even
500%
robustness
directly
power
wearable
electronics
harsh
cold
This
work
inspires
route
for
multifunctional
promises
practical
self‐powered
devices
extreme
environments.
Advanced Energy Materials,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Nov. 18, 2022
Abstract
The
advancement
of
the
Internet
Things/5G
infrastructure
requires
a
low‐cost
ubiquitous
sensory
network
to
realize
an
autonomous
system
for
information
collection
and
processing,
aiming
at
diversified
applications
ranging
from
healthcare,
smart
home,
industry
4.0
environmental
monitoring.
triboelectric
nanogenerator
(TENG)
is
considered
most
promising
technology
due
its
self‐powered,
cost‐effective,
highly
customizable
advantages.
Through
use
wearable
electronic
devices,
advanced
TENG
developed
as
core
enabling
self‐powered
sensors,
power
supplies,
data
communications
aforementioned
applications.
In
this
review,
advancements
TENG‐based
electronics
regarding
materials,
material/device
hybridization,
systems
integration,
convergence,
in
environment
monitoring,
transportation,
homes
toward
future
green
earth
are
reported.
Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
52(9), P. 2992 - 3034
Published: Jan. 1, 2023
The
flourishing
development
of
flexible
healthcare
sensing
systems
is
inseparable
from
the
fundamental
materials
with
application-oriented
mechanical
and
electrical
properties.
Thanks
to
continuous
inspiration
our
Mother
Nature,
hydrogels
originating
natural
biomass
are
attracting
growing
attention
for
their
structural
functional
designs
owing
unique
chemical,
physical
biological
These
highly
efficient
architectural
enable
them
be
most
promising
candidates
electronic
devices.
This
comprehensive
review
focuses
on
recent
advances
in
naturally
sourced
constructing
multi-functional
sensors
applications
thereof.
We
first
briefly
introduce
representative
polymers,
including
polysaccharides,
proteins,
polypeptides,
summarize
physicochemical
design
principles
fabrication
strategies
hydrogel
based
these
polymers
outlined
after
material
properties
required
presented.
then
highlight
various
techniques
devices,
illustrate
examples
wearable
or
implantable
bioelectronics
pressure,
strain,
temperature,
biomarker
field
systems.
Finally,
concluding
remarks
challenges
prospects
hydrogel-based
provided.
hope
that
this
will
provide
valuable
information
next-generation
build
a
bridge
between
as
matter
an
applied
target
accelerate
new
near
future.
Advanced Functional Materials,
Journal Year:
2021,
Volume and Issue:
32(1)
Published: Oct. 1, 2021
Abstract
Flexible
electronic
devices
(FEDs)
based
on
hydrogels
are
attracting
increasing
interest,
but
the
fabrication
of
for
FEDs
with
adhesiveness
and
high
robustness
in
harsh‐temperature
conditions
long‐term
use
remains
a
challenge.
Herein,
glutinous‐rice‐inspired
adhesive
organohydrogels
developed
by
introducing
amylopectin
into
copolymer
network
through
“one‐pot”
crosslinking
procedure
glycerol–water
mixed
solvent
containing
potassium
chloride
as
conductive
ingredient.
The
exhibit
excellent
transparency
(>90%),
conductivity,
stretchability,
tensile
strength,
adhesiveness,
anti‐freezing
property,
moisture
retention
ability.
wearable
strain
sensor
assembled
from
achieves
wide
working
range,
sensitivity
(gauge
factor:
8.82),
low
response
time,
reversibility,
properly
responds
long‐time
storage
(90
days).
is
further
integrated
Bluetooth
transmitter
receiver
fabricating
wireless
sensors.
Notably,
sandwich‐structured
capacitive
pressure
reliefs
electrodes
records
new
gauge
factor
9.43
kPa
−1
detection
limit,
outstanding
reversibility.
Furthermore,
detachable
durable
batteries
all‐in‐one
supercapacitors
also
fabricated
utilizing
electrolytes.
Overall,
this
work
offers
strategy
to
fabricate
robust
toward
sensing,
power
supply,
energy
storage.
