This
work
addresses
a
study
of
PEG-derived
hydrogels
based
on
β-aminoacrylate
cross-links
and
obtained
by
amino-yne
click
chemistry,
using
β-aminoacrylate-based
model
molecule
as
reference.
The
pH-triggered
cleavage
the
bonds
was
monitored
confirming
not
only
release
conjugated
amine
but
also
formation
mixture
chemical
species
that
depends
acidity
medium.
Moreover,
overall
hydrogel
degradation
rates
were
able
to
be
adjusted
modifying
pH,
temperature,
polymer
concentration,
or
selected
linker
PEG
chains.
In
particular,
labile
nature
bond
confirmed
even
under
physiological
conditions
(pH
7.4,
37
°C),
leading
long-term
material
degradation.
recovery
after
demonstrated
at
both
acidic
mimicking
results
acquired
through
studies.
Advanced Materials,
Год журнала:
2024,
Номер
36(25)
Опубликована: Март 12, 2024
Abstract
The
interactive
flexible
device,
which
monitors
the
human
motion
in
optical
and
electrical
synergistic
modes,
has
attracted
growing
attention
recently.
incorporation
of
information
attribute
within
signal
is
deemed
advantageous
for
improving
efficiency.
Therefore,
development
wearable
information‐electronic
strain
sensors
holds
substantial
promise,
but
integrating
synergizing
various
functions
realizing
strain‐mediated
transformation
keep
challenging.
Herein,
an
amylopectin
(AP)
modified
nanoclay/polyacrylamide‐based
nanocomposite
(NC)
hydrogel
aggregation‐induced‐emission‐active
ink
are
fabricated.
Through
fluorescence‐transfer
printing
onto
film
different
strains
with
nested
multiple
symbolic
information,
a
fluorescent
sensor
developed.
In
sensor,
nanoclay
plays
“one‐stone‐three‐birds”
role,
contributing
to
“lightening”
fluorescence
(≈80
times
emission
intensity
enhancement),
ionic
conductivity,
excellent
stretchability
(>1000%).
high
biocompatibility,
resilience
(elastic
recovery
ratio:
97.8%),
sensitivity
(gauge
factor
(GF):
10.9).
Additionally,
AP
endows
skin
adhesiveness.
can
achieve
monitoring
joint
movements
while
displaying
transformation.
This
research
poses
efficient
strategy
develop
multifunctional
materials
provides
general
platform
achieving
next‐generation
devices
prospective
applications
devices,
human‐machine
interfaces,
artificial
intelligence.
Chemical Reviews,
Год журнала:
2024,
Номер
124(18), С. 10435 - 10508
Опубликована: Сен. 16, 2024
The
mechanical
properties
of
polymer
gels
devote
to
emerging
devices
and
machines
in
fields
such
as
biomedical
engineering,
flexible
bioelectronics,
biomimetic
actuators,
energy
harvesters.
Coupling
network
architectures
interactions
has
been
explored
regulate
supportive
characteristics
gels;
however,
systematic
reviews
correlating
mechanics
interaction
forces
at
the
molecular
structural
levels
remain
absent
field.
This
review
highlights
engineering
gel
a
comprehensive
mechanistic
understanding
regulation.
Molecular
alters
architecture
manipulates
functional
groups/moieties
level,
introducing
various
permanent
or
reversible
dynamic
bonds
dissipative
energy.
usually
uses
monomers,
cross-linkers,
chains,
other
additives.
Structural
utilizes
casting
methods,
solvent
phase
regulation,
mechanochemistry,
macromolecule
chemical
reactions,
biomanufacturing
technology
construct
tailor
topological
structures,
heterogeneous
modulus
compositions.
We
envision
that
perfect
combination
may
provide
fresh
view
extend
exciting
new
perspectives
this
burgeoning
also
summarizes
recent
representative
applications
with
excellent
properties.
Conclusions
are
provided
from
five
aspects
concise
summary,
mechanism,
biofabrication
upgraded
applications,
synergistic
methodology.
Macromolecules,
Год журнала:
2024,
Номер
57(8), С. 3824 - 3830
Опубликована: Апрель 10, 2024
Due
to
the
combination
of
flexibility
and
mobility,
polycatenanes
have
potential
in
constructing
various
functional
materials.
To
date,
most
previous
works
reported
poly[2]catenanes
with
a
degree
polymerization
(DP)
around
20.
However,
it
remains
significant
challenge
synthesize
higher
DP
value.
Hydroxyl–yne
click
polymerization,
bearing
merits
obtaining
polymers
high
values,
short
reaction
time,
mild
condition,
is
promising
be
employed
preparing
values.
Herein,
strategy
using
hydroxyl–yne
chemistry
fabricate
was
proposed.
With
two
hydroxyl
groups
on
both
rings,
[2]catenane
monomer
M1
prepared.
Meanwhile,
hexaethylene
glycol
alkyne
functionalized
as
M2.
bicyclo[2.2.2]-1,4-diazaoctane
(DABCO)
catalyzing,
M2
reacted
via
at
room
temperature.
The
resultant
poly[2]catenane
reached
up
36.
In
addition,
tetraphenylethylene
(TPE)
modified
propiolic
acid
obtain
M3.
Then,
poly([2]catenane-alt-TPE)
aggregation-induced
emission
(AIE)
properties
obtained
between
M3
well.
Gels,
Год журнала:
2024,
Номер
10(11), С. 751 - 751
Опубликована: Ноя. 19, 2024
The
well-known
"click
chemistry"
reaction
copper(I)-catalyzed
azide-alkyne
1,3-dipolar
cycloaddition
(CuAAC)
was
used
to
transform
under
very
mild
conditions
hyaluronan-based
graft
copolymers
Nano Trends,
Год журнала:
2024,
Номер
7, С. 100050 - 100050
Опубликована: Сен. 1, 2024
Although
the
flourishing
of
Internet
Things
and
artificial
intelligence
has
accelerated
development
wearable
smart
bioelectronics,
heavy
reliance
on
external
power
remains
a
problem
that
needs
to
be
solved.
Thermoelectric
materials
have
emerged
as
promising
solution,
efficiently
converting
body
heat
into
electrical
energy
provide
stable
unrestricted
supply
for
wearables.
Moreover,
in
field
thermoelectric
biosensing,
where
flexibility
is
highly
demanded,
hydrogels
with
excellent
conductivity,
biocompatibility
through
structural
compositional
optimization
become
ideal
constructing
biosensors
meet
diverse
application
bioelectronics.
This
article
systematically
reviews
latest
research
progress
gels
self-powered
including
principles
operation,
well
preparation,
design,
hydrogels.
The
current
state
gel-based
applications
fields
temperature
sensing,
strain
temperature-strain
synergistic
respiratory
monitoring,
sweat
analysis
are
displayed
article.
Finally,
paper
summarizes
challenges
prospects
encouraging
rapid
realization
