Authorea (Authorea),
Journal Year:
2023,
Volume and Issue:
unknown
Published: May 2, 2023
Fuel-driven
dissipative
self-assembly,
which
is
a
well-established
concept
in
recent
years,
refers
to
out-of-equilibrium
molecular
self-assembly
initiated
and
supported
by
the
addition
of
active
molecules
(chemical
fuel).
It
widely
exists
nature
since
many
tempo-rary,
micro-
or
nanostructures
living
bodies
are
generated
biomolecules.
Therefore,
study
on
provides
good
opportunity
have
an
insight
into
microscopic
mechanism
organisms.
In
meantime,
assembly
thought
be
potential
pathway
achieve
dynamic,
temporary
supramolecular
materials.
Recently,
number
materials
been
developed
with
aid
strategies
for
realizing
self-assembly.
Some
their
properties,
including
solubility,
stiffness,
turbidity,
color,
self-healing
ability,
change
upon
chemical
fuel
but
spontaneously
restore
consumption.
The
dynamic
these
brings
them
various
unprecedented
functions.
this
review,
principles
fabricating
fuel-driven
material
first
reviewed
subsequently,
examples
emphatically
summarized,
gels,
self-erased
inks,
nanoreactors,
materials,
nanochannels.
Finally,
challenges
developing
some
perspectives
function
application
such
kind
discussed.
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(9), P. 5553 - 5560
Published: Feb. 27, 2023
Carbodiimide-fueled
anhydride
bond
formation
has
been
used
to
enhance
the
mechanical
properties
of
permanently
crosslinked
polymer
networks,
giving
materials
that
exhibit
transitions
from
soft
gels
covalently
reinforced
gels,
eventually
returning
original
gels.
Temporary
changes
in
result
a
transient
network
crosslinks,
which
dissipate
by
hydrolysis.
Over
an
order
magnitude
increase
storage
modulus
is
possible
through
carbodiimide
fueling.
The
time-dependent
can
be
modulated
concentration
carbodiimide,
temperature,
and
primary
chain
architecture.
Because
remain
rheological
solids,
new
material
functions
such
as
temporally
controlled
adhesion
rewritable
spatial
patterns
have
realized.
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(18), P. 10435 - 10508
Published: Sept. 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.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(7), P. 9224 - 9230
Published: Feb. 9, 2024
Soft
robots
have
great
potential
applications
in
manufacturing,
disaster
rescue,
medical
treatment,
etc.
Artificial
muscle
is
one
of
the
most
important
components
a
soft
robot.
In
previous
years,
hydrogel
actuators
that
can
be
controllably
deformed
by
stimuli
external
signals
been
developed
as
good
candidates
for
muscle-like
materials.
this
article,
we
successfully
prepared
chemical
fuel-driven
self-resettable
bilayer
actuator
mimicking
natural
muscles
with
aid
new
negative
feedback
reaction
network.
The
temporarily
deform
upon
addition
H+
(chemical
fuel).
Subsequently,
accelerated
between
BrO3–
and
Fe(CN)64–,
which
consume
H+.
It
resulted
spontaneous
recovery
pH
well
shape
actuator.
Such
an
exhibits
similarity
actuation
mechanisms
automaticity
manipulation
compared
to
widely
reported
stimuli-responsive
actuators.
This
illustrates
promising
dynamic
material
functions
living
creatures.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(20)
Published: March 22, 2024
Abstract
Recent
work
has
demonstrated
that
temporary
crosslinks
in
polymer
networks
generated
by
chemical
“fuels”
afford
materials
with
large,
transient
changes
their
mechanical
properties.
This
can
be
accomplished
carboxylic‐acid‐functionalized
hydrogels
using
carbodiimides,
which
generate
anhydride
lifetimes
on
the
order
of
minutes
to
hours.
Here,
impact
network
architecture
properties
transiently
crosslinked
was
explored.
Single
(SNs)
were
compared
interpenetrated
(IPNs).
Notably,
semi‐IPN
precursors
give
IPNs
treatment
carbodiimide
much
higher
fracture
energies
(i.e.,
resistance
fracture)
and
superior
compressive
strain
other
architectures.
A
precursor
material
featuring
acrylic
acid
only
free
chains
yields,
carbodiimide,
an
IPN
a
energy
2400
J/m
2
,
fourfold
increase
analogous
yields
SN.
enables
formation
macroscopic
complex
cut
patterns,
even
at
high
strain,
underscoring
pivotal
role
performance.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(5), P. 3323 - 3330
Published: Jan. 26, 2024
In
living
organisms,
precise
control
over
the
spatial
and
temporal
distribution
of
molecules,
including
pheromones,
is
crucial.
This
level
equally
important
for
development
artificial
active
materials.
this
study,
we
successfully
controlled
small
molecules
in
system
at
nonequilibrium
states
by
actively
transporting
them,
even
against
apparent
concentration
gradient,
with
high
selectivity.
As
a
demonstration,
aqueous
solution
acid
orange
(AO7)
TMC
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(15), P. 19642 - 19650
Published: April 3, 2024
The
fabrication
of
a
soft
actuator
with
dampened
actuation
response
is
presented.
This
was
achieved
via
the
incorporation
into
an
actuating
hydrogel
urease-loaded
pH-responsive
bicontinuous
nanospheres
(BCNs),
whose
membrane
able
to
regulate
permeability
and
thus
conversion
fuel
urea
ammonia.
these
nanoreactors
enzymatically
induced
pH
change
translated
actuator.
In
hydrogels
composed
nonresponsive
layer,
transient
gradient
yielded
asymmetric
swelling
behavior,
which
bending
response.
profile
could
be
controlled
by
varying
external
concentrations.
Furthermore,
we
showed
that
spatial
organization
BCNs
within
had
great
influence
on
Embedding
active,
layer
resulted
in
reduced
due
local
substrate
comparison
embedding
them
passive
bilayer
hydrogel.
Finally,
were
induce
comprising
two
identical
active
layers
immobilization
one
specific
layer.
Upon
addition
urea,
generated,
caused
accelerated
BCN
device
before
attenuated
over
time.
