Supramolecular Organic Nanofiller: A New Reinforcement Strategy for Dynamic Covalent Polymer Networks Toward Upcycling of Carbon Fiber Composites
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 22, 2025
Abstract
Dynamic
covalent
polymer
networks
(DCPN)
provide
an
important
solution
to
the
challenging
recyclability
of
thermoset
elastomers.
However,
dynamic
bonds
exhibit
relatively
weak
bond
energies,
considerably
decreasing
mechanical
properties
DCPN.
Herein,
a
novel
reinforcement
strategy
for
DCPN
involving
in
situ
formation
supramolecular
organic
nanofillers
through
asynchronous
polymerization
is
proposed.
Owing
difference
reactivity
isocyanate
groups
and
gradual
deblocking
aldimine,
cross‐linking
hexamethylene
diisocyanate
isocyanate‐terminated
prepolymer
containing
oxime–urethane
with
deblocked
tris(2‐aminoethyl)amine
facilitates
transition
from
molecular
interpenetration
chains
into
immiscible
polymerization.
This
results
thermodynamic
incompatibility
between
hyperbranched
clusters
long
chains,
inducing
spontaneous
nanofillers.
Compared
traditional
strategies,
improve
Furthermore,
interactions
enable
network
excellent
recyclability.
The
unique
prepared
allow
their
combination
carbon
fibers
(CF)
form
CF
composites
outstanding
personal‐protection
applications,
achieving
composite
upcycling.
study
offers
on
upcycling
high‐performance
composites.
Язык: Английский
Rational Designed Polymeric Rigid Cages for Trapping Bulky Vegetable Oils toward Versatile Bio‐Based Adhesives
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 18, 2024
Abstract
Polymer
gels
stand
out
as
emerging
and
promising
materials
in
adhesives.
However,
flexible
network
network–solvent
mismatch
affect
their
strengths
stabilities.
Regulating
the
architectures
of
polymer
via
molecular
design
is
a
strategy
to
overcome
these
drawbacks.
Herein,
novel
polymeric
rigid
cage
(PRC)
structure
proposed
for
capturing
bulky
vegetable
oils
mechanically
interlocking
supramolecular
interactions
or
steric
hindrance
effect
fabricate
universal
gels‐based
By
rationally
designing
refining
architectures,
prepared
by
4,4′‐diphenylmethane
diisocyanate
(MDI)
N
,
″,
″‐tetra(2‐hydroxypropyl)
ethylenediamine
(EDTP)
possesses
optimal
encapsulation
epoxidized
linseed
oil
(ELO).
The
resulting
RCE‐50
gel
exhibited
robust
mechanical
properties
(≈65
MPa)
excellent
stability
(high
temperatures,
high
pressures,
solvents
immersion).
Owing
strength
polyurethane
network,
adhesion
high‐density
amino
ester
groups,
well
hydrophobic
toughening
effects
ELO,
can
be
used
versatile
adhesive
with
under
different
conditions.
This
study
proposes
new
approach
innovating
gels,
provides
idea
porous
materials,
offers
fresh
insights
developing
bio‐based
Язык: Английский
Bioelectronics with Topological Crosslinked Networks for Tactile Perception
Advanced Physics Research,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 4, 2025
Abstract
Bioelectronics,
which
integrate
biological
systems
with
electronic
components,
have
attracted
significant
attention
in
developing
biomimetic
materials
and
advanced
hardware
architectures
to
enable
novel
information‐processing
systems,
sensors,
actuators.
However,
the
rigidity
of
conjugated
molecular
lack
reconfigurability
static
crosslinked
structures
pose
challenges
for
flexible
sensing
applications.
Topological
networks
(TCNs)
featuring
dynamic
interactions
offer
enhanced
flexibility
environmentally
induced
reconfigurability,
decoupling
competition
between
performances.
Here,
recent
advances
are
summarized
assembly
methods
bioelectronics
different
TCNs
elaborate
ion/electron‐transport
mechanisms
from
perspective
interactions.
Decoupling
effects
can
be
achieved
by
comparing
distinct
their
respective
properties,
an
outlook
is
provided
on
a
new
range
neuromorphic
biocompatibility,
self‐healing,
self‐powered,
multimodal‐sensing
capabilities.
The
development
TCN‐based
significantly
impact
fields
artificial
perception
devices,
networks,
systems.
Язык: Английский
Synergistic Photoluminescence Enhancement in Nonaromatic Amino Acids and Sugars via Glycosylation
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 9, 2025
Abstract
Nonaromatic
amino
acids
with
intrinsic
photoluminescence
(PL)
have
drawn
growing
attention
due
to
their
crucial
role
in
the
luminescence
of
natural
proteins.
However,
weak
significantly
constrains
study
specific
photophysical
processes,
emission
mechanism
biomolecules,
and
applications.
Here,
a
serendipitous
finding
synergistic
PL
enhancement
by
coupling
nonaromatic
sugars
via
glycosidic
bonds
is
reported.
For
example,
crystals
glucose,
L‐serine,
alongside
corresponding
disaccharide
dipeptide
are
weakly
emissive,
while
glycosylation
drastically
boosts
quantum
yields
L‐serine
from
0.3%
as
high
9.2%,
accompanied
emergence
pronounced
persistent
room
temperature
phosphorescence
(p‐RTP).
This
arises
ingenious
integration
electron‐rich
oxygen
clusters
present
sugar
charge
separation
characteristics
acids.
Furthermore,
ultrafast
femtosecond
nanosecond
transient
absorption
spectroscopy
theoretical
calculations
further
reveal
importance
hybridization
locally
excited
transfer
states
for
p‐RTP
features.
These
results
not
only
provide
universal
strategy
constructing
efficient
nonconventional
luminophores
but
also
shed
new
light
on
underlying
biological
autofluorescence.
Язык: Английский
Thermoplastic and Reprocessable Polyureas Synthesized from CO2-Based Oligourea
ACS Applied Polymer Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 24, 2025
Язык: Английский
An Ultra‐Thin Stretchable Electrode Based on High‐Resilient Polyurethane Crosslinked with La3+‐Complexes
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 2, 2025
Stretchable
electronic
skins
with
multifunctional
sensing
capabilities
are
of
great
importance
in
smart
healthcare,
wearable
display
electronics,
intelligent
robots,
and
human-machine
interfaces.
Thermoplastic
elastomers
play
a
pivotal
role
as
soft
substrate
the
field
stretchable
electronics.
However,
dynamic
interactions
common
thermoplastic
often
result
high
hysteresis
fatigue
damage,
limiting
their
performance
durability.
In
this
study,
highly
resilient
fatigue-resistant
elastomer
is
developed
by
employing
La3+-complexes
crosslinkers.
The
woven
structure
formed
between
prepolymer
ligands
lanthanum
(III)
metal
ions
establishes
stable
coordination
introduces
additional
entanglements
around
Furthermore,
self-assembles
into
hierarchical
nanoarchitectures,
which
serve
physical
crosslinks,
significantly
enhancing
mechanical
strength.
As
result,
new
exhibit
exceptional
strength
(Young's
modulus
≈3.47
MPa;
maximum
stress
≈16.52
MPa),
resilience
(residual
strain
during
cyclic
stretching
at
100%
≈8%),
resistance
(strength
retention
rate
≈90%
after
2000
cycles
stretching),
thermomechanical
properties
(creep
≈14.43%
residual
≈0.22%
80
°C
0.1
MPa).
Leveraging
high-performance
polyurethane
elastomer,
ultra-thin
flexible
electrodes
fabricated,
can
achieve
long-term
monitoring
physiological
signals
human
body.
Язык: Английский
Jellyfish-Inspired Ultrastretchable, Adhesive, Self-Healing, and Photoswitchable Fluorescent Ionic Skin Enabled by a Supramolecular Zwitterionic Network
Nano Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 16, 2025
Ionic
hydrogels
suit
ionic
skins,
but
advanced
are
challenging.
Inspired
by
jellyfish,
we
developed
an
hydrogel
with
ultrastretchability,
conductivity,
adhesion,
self-healing,
and
photoswitchable
fluorescence
via
a
supramolecular
zwitterionic
network.
This
consists
of
silk
fibroin,
betaine
analogue,
biomineral
calcium
salts,
spiropyran
in
dynamically
cross-linked
macromolecular
Calcium
ions
facilitate
electrical
signal
transmission
interactions,
while
enables
color
fluorescence.
Density
functional
theory
Fourier
transform
infrared
analysis
reveal
abundant
hydrogen
bonding,
associations,
van
der
Waals
forces,
contributing
to
stretchability,
making
them
ideal
for
epidermal
electrodes.
The
also
shows
potential
optical
printing
anti-counterfeiting
applications
due
spiropyran's
reversible
photochromic
photoluminescent
behaviors.
Moreover,
jellyfish-like
robot
capable
electric-driven
movement
is
created
using
these
features.
study
enhances
understanding
dynamic
noncovalent
interactions
networks,
enriching
design
principles
advancing
intelligent
skins.
Язык: Английский
Longevous ionogels with high strength, conductivity, adhesion and thermoplasticity
Chemical Engineering Journal,
Год журнала:
2024,
Номер
497, С. 155047 - 155047
Опубликована: Авг. 23, 2024
Язык: Английский
The Evolution of Underwater Microelectronic Encapsulation: An Universal Marine Wearable Hydrogel
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 27, 2024
Abstract
Long‐term
access
to
undersea
information
is
of
critical
importance
for
sensing.
However,
the
paramount
challenge
in
marine
wearable
technology
lies
achieving
durable
and
stable
adhesion,
coupled
with
biocompatibility,
devices
submerged
saline
conditions
ocean.
Here,
a
self‐healing,
seawater‐resistant
hydrogel
reported
that
exhibits
robust
adhesion
diverse
biotic
abiotic
surfaces.
Remarkably,
presented
augmented
octopus
sucker‐inspired
microstructures,
feature
markedly
improves
its
capability
organism
underwater.
The
mechanical
properties
water,
over
20‐fold
elongation
fully
swollen
state,
healing
efficiency
exceeding
90%
after
30
min.
applied
toward
several
representative
scenes.
Specifically,
hydrogels
equipped
flexible
pressure
sensors
are
reliably
affixed
fish
turtles
sensing
hydraulic
more
than
20
days,
while
featuring
compact
camera
mounted
on
corals
crabs
constant
monitoring
surroundings.
Furthermore,
molded
into
mesh
structure
integrating
multiple
sensors,
functioning
as
multi‐node
platforms.
underwater
hydrogel,
broad
applicability,
introduces
an
approach
real‐time
non‐invasive
life
internet
construction.
Язык: Английский