Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
62(3)
Published: Nov. 15, 2022
Enabling
dynamically
tunable
emissive
systems
offers
opportunities
for
constructing
smart
materials.
Clusteroluminescence,
as
unconventional
luminescence,
has
attracted
increasing
attention
in
both
fundamental
and
applied
sciences.
Herein,
we
report
a
supramolecular
poly(disulfides)
network
with
clusteroluminescence.
The
reticular
H-bonds
synergize
the
rigidity
mobility
of
dynamic
networks,
endow
resulting
materials
mechanical
adaptivity
robustness,
simultaneously
enabling
efficient
clusteroluminescence
phosphorescence
at
77
K.
Orthogonally
luminescence
are
achieved
two
manners,
i.e.,
slow
backbone
disulfide
exchange
fast
side-chain
metal
coordination.
Further
exploration
reprocessability
chemical
closed-loop
recycling
intrinsic
networks
sustainable
is
feasible.
We
foresee
that
synergistic
strategy
chemistry
novel
pathway
potential
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(12)
Published: Jan. 11, 2023
Conventional
hydrogels
usually
suffer
from
the
inherent
conflict
between
stiffness
and
toughness,
severely
hampering
their
applications
as
load-bearing
materials.
Herein,
an
adaptable
crystal-domain
cross-linking
design
is
reported
to
overcome
this
trade-off
for
by
taking
full
advantage
of
both
deformation-resisting
energy-dissipating
capacities
points.
Through
solvent
exchange
homogenize
polymer
network,
followed
salting
out
foster
crystallization,
a
class
sal-exogels
with
high
number
densities
uniform
crystalline
domains
embedded
in
homogeneous
networks
constructed.
During
deformation,
those
adaptive
initially
survive
arrest
while
later
gradually
disentangle
efficiently
dissipate
energy,
crucial
realization
desirable
compatibility
toughness.
The
resultant
sal-exogel
achieves
coordinatively
enhanced
(52.3
±
2.7
MPa)
toughness
(120.7
11.7
kJ
m-2
),
reconciling
challenging
them.
This
finding
provides
practical
universal
route
stiff
tough
has
profound
impact
on
many
requiring
such
combined
mechanical
properties.
Energy & Environmental Science,
Journal Year:
2023,
Volume and Issue:
16(3), P. 1291 - 1311
Published: Jan. 1, 2023
An
all-round
supramolecular
zwitterionic
hydrogel
electrolyte
with
the
advantages
of
in
situ
repair,
H
2
O-poor
interface,
and
boosting
desolvation
hydrated
Zn
2+
is
proposed
to
enable
fabrication
environment-adaptive
dendrite-free
zinc
ion
capacitors.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(34)
Published: June 27, 2022
Processing
tough
hydrogels
into
sophisticated
architectures
is
crucial
for
their
applications
as
structural
elements.
However,
Digital
Light
(DLP)
printing
of
challenging
because
the
low-speed
gelation
and
toughening
process.
Described
here
a
simple
yet
versatile
system
suitable
DLP
to
form
hydrogel
architectures.
The
aqueous
precursor
consists
commercial
photoinitiator,
acrylic
acid,
zirconium
ion
(Zr4+
),
readily
forming
metallo-supramolecular
under
digital
light
in
situ
formation
carboxyl-Zr4+
coordination
complexes.
high-stiffness
antiswelling
properties
as-printed
gel
enable
high-efficiency
high-fidelity
constructs.
Furthermore,
swelling-induced
morphing
also
achieved
by
encoding
structure
gradients
during
with
grayscale
light.
Mechanical
printed
are
further
improved
after
incubation
water
due
variation
local
pH
rearrangement
complex.
swelling-enhanced
stiffness
affords
shape
fixation
ability
manual
deformations,
thereby
provides
an
additional
avenue
more
complex
configurations.
These
used
devise
impact-absorption
element
or
high-sensitivity
pressure
sensor
proof-of-concept
examples.
This
work
should
merit
engineering
other
gels
extend
scope
diverse
fields.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(21)
Published: Feb. 23, 2023
Most
hydrogels
become
frozen
at
subzero
temperatures,
leading
to
degraded
properties
and
limited
applications.
Cryoprotectants
are
massively
employed
improve
anti-freezing
property
of
hydrogels;
however,
there
accompanied
disadvantages,
such
as
varied
networks,
reduced
mechanical
properties,
the
risk
cryoprotectant
leakage
in
aqueous
conditions.
Reported
here
is
glassy
hydrogel
having
intrinsic
capacity
excellent
optical
ultra-low
temperatures.
Supramolecular
poly(acrylamide-co-methacrylic
acid)
with
moderate
water
content
(≈50
wt.%)
dense
hydrogen-bond
associations
a
state
room
temperature.
Since
hydrogen
bonds
strengthened
temperature
decreases,
this
gel
becomes
stronger
stiffer,
yet
still
ductile,
Young's
modulus
900
MPa,
tensile
strength
30
breaking
strain
35%
-45
°C.
This
retains
high
transparency
even
liquid
nitrogen.
It
also
exhibits
unique
phosphorescence
due
presence
carbonyl
clusters,
which
further
enhanced
Further
investigations
elucidate
that
related
fact
most
molecules
tightly
bound
confined
matrix
non-freezable.
correlation,
validated
several
systems,
provides
roadmap
develop
for
widespread
applications
extreme
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(19)
Published: March 9, 2022
Herein,
the
supramolecular
plastic-like
hydrogel
(SPH)
is
introduced
as
a
platform
to
fabricate
sustainable
plastics
with
ultrahigh
stiffness
and
strength
well
water-assisted
arbitrarily
shapeable
capability.
The
transparent
are
constructed
from
SPHs
of
cellulose
ether/polycarboxylic
acid
complexes
demonstrate
mechanical
robustness
Young's
modulus
up
3.4
GPa
tensile
124.0
MPa,
superior
or
comparable
most
common
plastics.
Meanwhile,
shape
can
be
reversibly
engineered
by
air
drying
diverse
2D/3D
shapes
structures,
which
generated
conveniently
via
origami,
kirigami,
embossing,
etc.,
in
virtue
plastic
deformation
memory
effect
SPHs.
On
basis
multi-dimensional
infrared-spectral
analysis,
it
revealed
that
dense
acid-acid
acid-ether
hydrogen
(H)-bonding
network
responsible
for
while
evolution
water-polymer
H-bonds
into
polymer-polymer
during
contributes
fixing.
This
work
provides
novel
method
manufacturing
simultaneous
strong
performance
convenient
processibility
hydrogels
behavior.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(38)
Published: June 28, 2022
Supramolecular
polymers
(SPs)
have
attracted
broad
interest
because
of
their
intriguing
features
and
functions.
Host-guest
interactions
often
impart
tunable
physicochemical
properties,
reversible
hierarchical
organization,
stimuli-responsiveness
to
SPs
for
diverse
biomedical
applications.
Characterized
by
strong
but
dynamic
with
guest
molecules,
cucurbit[n]uril
(CB[n])
has
shown
great
potential
as
an
important
building
block
various
functional
In
this
Minireview,
we
summarize
the
most
recent
examples
regarding
design,
fabrication,
applications
CB[n]-based
supramolecular
(CSPs),
which
are
categorized
noncovalent
covalent
CSPs
according
between
CB[n]
polymer
backbones.
The
design
principles
unique
advantages
applications,
well
developmental
trends
future
perspectives
cross-disciplinary
area
also
discussed.
InfoMat,
Journal Year:
2023,
Volume and Issue:
5(5)
Published: March 23, 2023
Abstract
Intelligent
perception
means
that
with
the
assistance
of
artificial
intelligence
(AI)‐motivated
brain,
flexible
sensors
achieve
ability
memory,
learning,
judgment,
and
reasoning
about
external
information
like
human
brain.
Due
to
superiority
machine
learning
(ML)
algorithms
in
data
processing
intelligent
recognition,
systems
possess
match
or
even
surpass
systems.
However,
built‐in
these
need
work
on
dynamic
irregular
surfaces,
inevitably
affecting
precision
fidelity
acquired
data.
In
recent
years,
strategy
introducing
developed
functional
materials
innovative
structures
into
has
made
some
progress
toward
above
challenges,
blessing
ML
algorithms,
accurate
various
scenarios
have
been
achieved.
Here,
most
representative
for
constructing
are
comprehensively
reviewed,
research
based
is
further
summarized,
intersection
two
expected
unlock
new
opportunities
next‐stage
AI
development.
image
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(29)
Published: May 20, 2023
Supramolecular
interactions
facilitate
the
development
of
tough
multifunctional
thermoplastic
elastomers.
However,
fundamental
principles
that
govern
supramolecular
toughening
are
barely
understood,
and
rational
design
to
achieve
desired
high
toughness
remains
daunting.
Herein,
we
report
a
simple
robust
method
for
elastomers
by
rationally
tailoring
hard-soft
phase
separation
structures
containing
rigid
flexible
segments.
The
introduced
functional
segments
with
distinct
structural
rigidities
provide
mismatched
efficiently
tune
energy
dissipation
bear
an
external
load.
optimal
elastomer
aromatic
amide
acylsemicarbazide
moieties
demonstrates
record
(1.2
GJ
m-3
),
extraordinary
crack
tolerance
(fracture
282.5
kJ
m-2
ultrahigh
true
stress
at
break
(2.3
GPa),
good
elasticity,
healing
ability,
recyclability,
impact
resistance.
mechanism
is
validated
testing
various
elastomers,
confirming
potential
designing
developing
super-tough
materials
promising
applications
in
aerospace
electronics.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(39)
Published: Aug. 4, 2022
Chemical
recycling
of
synthetic
polymers
offers
a
solution
for
developing
sustainable
plastics
and
materials.
Here
we
show
that
two
types
dynamic
covalent
chemistry
can
be
orthogonalized
in
solvent-free
polymer
network
thus
enable
chemically
recyclable
crosslinked
material.
Using
simple
acylhydrazine-based
1,2-dithiolane
as
the
starting
material,
disulfide-mediated
reversible
polymerization
acylhydrazone-based
crosslinking
combined
one-pot
reaction,
resulting
mechanically
robust,
tough,
processable
The
bonds
both
backbones
crosslinkers
endow
with
depolymerization
capability
under
mild
conditions
and,
importantly,
virgin-quality
monomers
recovered
separated.
This
proof-of-concept
study
opportunities
to
design
materials
based
on
toolbox.
