Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 30, 2024
Abstract
Hydrophobic
conductive
gels
have
attracted
much
attention
in
underwater
sensing
as
the
soft
robots
and
wearable
sensors.
Among
various
methods
for
preparing
gels,
UV‐initiated
polymerization
shows
advantages
of
rapid
curing
significant
energy
savings.
However,
traditional
commonly
used
photoinitiators
often
migrate
or
diffuse
within
especially
with
prolonged
use
underwater,
posing
potential
environmental
health
risks.
Herein,
a
novel
lignin‐based
macromolecular
photoinitiator
(L‐BF)
is
first
designed
by
incorporating
benzoylformate
into
lignin
backbone,
demonstrating
excellent
UV
absorption,
high
radical
initiation
efficiency,
hydrophobicity.
Subsequently,
hydrophobic
eutectogels
(HEG)
are
prepared
via
using
L‐BF
photoinitiator.
The
HEG
mechanical
properties
(toughness
5.67
MJ
m
−
3
strain
941%)
scarcely
migration
underwater.
Moreover,
network
endowed
hydrophobicity
(water
contact
angle
exceeds
110°;
swelling
ratio
<5.8%),
superior
adhesion
(255
kPa),
even
maintained
performance
(gauge
factor
4.69),
long‐term
reproducibility
(20
000
cycles)
air
Validation
confirms
an
effective
sensor
posture
monitoring
communication,
advancing
low‐migration
marine
exploration.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: March 8, 2024
The
development
of
advanced
materials
capable
autonomous
self-healing
and
mechanical
stimulus
sensing
in
aquatic
environments
holds
great
promise
for
applications
underwater
soft
electronics,
robotics,
water-resistant
human-machine
interfaces.
However,
achieving
superior
properties
effective
simultaneously
an
environment
is
rarely
feasible.
Here,
we
present
ultrafast
molecularly
engineered
piezo-ionic
elastomer
inspired
by
the
cephalopod's
suckers,
which
possess
mechanosensitive
ion
channels.
Through
strategic
engineering
hydrophobic
C-F
groups,
hydrolytic
boronate
ester
bonds,
ions,
material
achieves
outstanding
efficiencies,
with
speeds
94.5%
(9.1
µm/min)
air
89.6%
(13.3
underwater,
coupled
remarkable
pressure
sensitivity
(18.1
kPa
Macromolecular Rapid Communications,
Journal Year:
2024,
Volume and Issue:
45(21)
Published: July 15, 2024
Abstract
Over
the
past
two
decades,
deep
eutectic
solvents
(DESs)
have
captured
significant
attention
as
an
emergent
class
of
that
unique
properties
and
applications
in
differing
fields
chemistry.
One
area
where
DES
systems
find
utility
is
design
polymeric
gels,
often
referred
to
“eutectogels,”
which
can
be
prepared
either
using
a
replace
traditional
solvent,
or
monomers
form
part
themselves.
Due
extensive
network
intramolecular
interactions
(e.g.,
hydrogen
bonding)
ionic
species
exist
systems,
eutectogels
possess
appealing
material
properties—high
adhesive
strength,
tuneable
viscosity,
rapid
polymerization
kinetics,
good
conductivity,
well
high
strength
flexibility.
In
addition,
non‐covalent
crosslinking
approaches
are
possible
due
inherent
these
materials.
This
review
considers
several
key
eutectogels,
including
organic
electronics,
wearable
sensor
technologies,
3D
printing
resins,
adhesives,
range
various
biomedical
applications.
The
design,
synthesis,
discussed,
addition
advantages
this
synthetic
approach
comparison
gel
design.
Perspectives
on
future
directions
field
also
highlighted.
ACS Materials Letters,
Journal Year:
2023,
Volume and Issue:
5(12), P. 3340 - 3346
Published: Nov. 15, 2023
Underwater
recording
remains
a
critical
challenge
in
bioelectronics
because
traditional
flexible
electrodes
can
not
fulfill
essential
requirements
such
as
stability
and
steady
conductivity
aquatic
environments.
Herein,
we
show
the
use
of
elastic
gels
made
hydrophobic
natural
eutectic
solvents
water-resistant
electrodes.
These
eutectogels
are
designed
with
tailorable
mechanical
properties
via
one-step
photopolymerization
acrylic
monomers
different
mixtures
composed
fatty
acids
menthol.
The
low
viscosity
eutectics
turns
formulations
into
suitable
inks
for
3D
printing,
allowing
fast
manufacturing
complex
objects.
Furthermore,
nature
building
blocks
endows
excellent
water
uptake.
obtained
eutectogel
record
real-time
electromyography
(EMG)
signals
interference
air
underwater.
ACS Applied Polymer Materials,
Journal Year:
2024,
Volume and Issue:
6(7), P. 3966 - 3974
Published: April 1, 2024
The
development
of
soft
eutectogels
that
are
highly
transparent,
stretchable,
self-healing,
self-adhesive,
recyclable,
and
can
be
used
for
underwater
sensing
applications
is
desirable.
Here,
with
multiple
functionalities
prepared
by
the
one-step
copolymerization
rigid
polymerizable
ionic
liquids
acrylate
monomers
in
a
hydrophobic
deep
eutectic
solvent
consisting
thymol/coumarin.
Poly(ionic
liquids)/polyacrylates
to
construct
tough
backbone
eutectogel
networks,
whereas
components
introduced
into
polymer
matrix
impart
dynamic
cross-linking
properties.
Overall,
network
has
excellent
hydrophobicity
intermolecular
interactions,
resulting
water
resistance,
mechanical
strength,
self-adhesion
behavior
even
aqueous
environments.
as
an
sensor
good
capability
detect
strain,
touch,
changes
surrounding
environment.
Moreover,
dynamically
cross-linked
easily
recycled
through
solvent.
methodology
proposed
this
study
holds
promise
future
fields
sensors,
wet
adhesives,
flexible
electronics.
