Advanced Materials,
Год журнала:
2024,
Номер
36(28)
Опубликована: Апрель 23, 2024
Abstract
Myocardial
infarction
(MI)
causes
cell
death,
disrupts
electrical
activity,
triggers
arrhythmia,
and
results
in
heart
failure,
whereby
50–60%
of
MI‐associated
deaths
manifest
as
sudden
cardiac
(SCD).
The
most
effective
therapy
for
SCD
prevention
is
implantable
cardioverter
defibrillators
(ICDs).
However,
ICDs
contribute
to
adverse
remodeling
disease
progression
do
not
prevent
arrhythmia.
This
work
develops
an
injectable
collagen‐PEDOT:PSS
(poly(3,4‐ethylenedioxythiophene)
polystyrene
sulfonate)
hydrogel
that
protects
infarcted
hearts
against
ventricular
tachycardia
(VT)
can
be
combined
with
human
induced
pluripotent
stem
(hiPSC)‐cardiomyocytes
promote
partial
remuscularization.
PEDOT:PSS
improves
collagen
gel
formation,
micromorphology,
conductivity.
hiPSC‐cardiomyocytes
hydrogels
exhibit
near‐adult
sarcomeric
length,
improved
contractility,
enhanced
calcium
handling,
conduction
velocity.
RNA‐sequencing
data
indicate
maturation
cell‐matrix
interactions.
Injecting
mouse
decreases
VT
the
levels
healthy
hearts.
Collectively,
offer
a
versatile
platform
treating
injuries.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Апрель 23, 2024
Supercapacitors
offer
notable
properties
as
energy
storage
devices,
providing
high
power
density
and
fast
charging
discharging
while
maintaining
a
long
cycling
lifetime.
Although
poly(3,4-ethylenedioxythiophene)
doped
with
poly(4-styrenesulfonate)
(PEDOT/PSS)
has
become
gold
standard
among
organic
electronics
materials,
researchers
are
still
investigating
ways
to
further
improve
its
capacitive
characteristics.
In
this
work,
we
introduced
Nafion
an
alternative
polymeric
counterion
PSS
form
highly
PEDOT/Nafion;
advantageous
supercapacitive
were
improved
by
treatment
either
dimethyl
sulfoxide
or
ethylene
glycol.
Accordingly,
electrochemical
characterization
of
PEDOT/Nafion
films
revealed
their
areal
capacitance
(22
mF
cm–2
at
10
mV/s)
low
charge
transfer
resistance
(∼380
Ω),
together
excellent
volumetric
(74
F
cm–3),
Coulombic
efficiency
(99%),
23.1
±
1.5
mWh
cm–3
0.5
W
cm–3,
resulting
from
more
effective
ion
diffusion
inside
the
conductive
film,
confirmed
results
spectroscopic
studies.
A
proof-of-concept
symmetric
supercapacitor
based
on
was
characterized
specific
approximately
15.7
g–1
impressive
long-term
stability
(Coulombic
∼99%
∼98.7%
after
1000
charging/discharging
cycles),
overperforming
device
PEDOT/PSS.
Flexible
electronic
devices
in
biomedicine,
environmental
monitoring,
and
brain-like
computing
have
garnered
significant
attention.
Among
these,
organic
electrochemical
transistors
(OECTs)
been
spotlighted
flexible
sensors
neuromorphic
circuits
for
their
low
power
consumption,
high
signal
amplification,
excellent
biocompatibility,
chemical
stability,
stretchability,
flexibility.
However,
OECTs
will
also
face
some
challenges
on
the
way
to
commercialized
applications,
including
need
improved
long-term
enhanced
performance
of
N-type
materials,
integration
with
existing
technologies,
cost-effective
manufacturing
processes.
This
review
presents
device
physics
detail,
evaluation
various
properties
introduction
different
configurations
aforementioned
OECTs.
Subsequently,
components
this
roles
are
explained
depth,
main
ways
design
fabricate
summarized.
Following
this,
we
summarize
analyze
principles
applications
electrophysiological
sensing,
biosensing,
sensor
arrays.
In
addition,
concepts
OECT-based
digital
presented.
Finally,
paper
summarizes
opportunities
electronics.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 16, 2025
Abstract
The
unique
structure
of
carbon
nanotubes
(CNTs)
endows
them
with
exceptional
electrical
and
mechanical
properties,
along
a
high
surface
area,
making
highly
beneficial
for
use
as
flexible,
high‐performing
thermoelectric
materials.
As
result,
the
application
CNTs
in
field
has
become
increasingly
widespread.
Considering
rapid
advancements
this
field,
review
offers
timely
overview
most
recent
progress
on
CNT‐based
materials
devices
over
past
five
years.
This
begins
by
introducing
fundamental
concepts
mechanisms
Then
new
strategies
are
explored
to
enhance
their
performance,
focusing
doping
composites,
while
emphasizing
importance
CNT
stability
key
research
area.
Additionally,
latest
design
expanded
scenarios
flexible
wearable
CNTs‐based
summarized.
Finally,
current
challenges
addressed
future
directions
development
discussed.
Hydrogels
with
a
combination
of
mechanical
flexibility
and
good
electrical
conductivity
hold
significant
potential
for
various
applications.
Nonetheless,
it
is
inevitable
that
water-based
conductive
hydrogels
lose
their
elasticity
at
extremely
low
temperatures,
severely
limiting
utilization
in
ultralow
temperature
environments,
such
as
those
Arctic/Antarctic
exploration.
In
this
study,
we
developed
hydrogel
based
on
double
network
cross-linking
strategy
incorporated
silk
fibroin
(SF)
poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)
(PEDOT:PSS)
within
lithium
bromide
(LiBr)
solution,
which
shows
exceptional
antifreezing
(-108
°C
freezing
point)
excellent
(16.33
S
m-1).
The
obtained
SF/PEDOT:PSS/LiBr
(SPL)
stable
reliable
response
to
wide
range
deformations
(compression:
0.5-60%;
tensile:
1.0-100%),
short
response/recovery
time
approximately
70
ms.
More
importantly,
the
displays
well-maintained
conductivity,
robust
properties,
dependable
sensing
capabilities,
even
under
temperatures
-80
°C.
For
proof
concept,
demonstrated
applications
SPL
detecting
body
movements,
monitoring
climate
conditions,
ensuring
information
security
environments.
results
indicate
promising
candidate
fabricating
flexible
sensors,
particularly
well-suited
use
challenging
scenarios.
