ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(16), P. 19473 - 19480
Published: Aug. 14, 2024
Two
supramolecular
ionic
nanomaterials
(SINs)
were
successfully
prepared
by
multidentate
imidazolium
organic
salts
and
acid
via
self-assembly
(ISA),
which
is
formed
tetraphenylethylene
(TPE)-based
(TPE-COS
TPE-C16OS)
4,4′,4″,4‴-(ethene-1,1,2,2-tetrayl)tetrabenzenesulfonic
(TPE-SO3H)
in
MeOH.
These
SINs
exhibited
high
thermal
stability
are
insoluble
solvents.
Furthermore,
as
fluorescence
sensors,
they
showed
sensitivity
selectivity
the
detection
of
nitroaromatic
explosives,
especially
for
trinitrophenol
(TNP);
linear
range
SIN-1
SIN-2
was
0.4–128
μM
1–128
μM;
their
λex
set
340
350
nm;
λem
489
458
related
limit
0.87
0.42
μM,
respectively.
The
quenching
mechanism
TNP
synergistic
effect
energy
transfer,
inner
filter,
photoelectron
transfer.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(22), P. 8552 - 8561
Published: May 20, 2024
Polyimides
show
excellent
thermal
stability
and
mechanical
properties,
but
the
high
glass
transition
temperature
(Tg)
renders
difficulty
to
their
processing.
To
solve
such
a
problem,
herein,
series
of
novel
poly(imide-urea)s
(PIUs)
were
synthesized
from
CO2-based
polyureas
(PUas)
with
3,3′,4,4′-biphenyltetracarboxylic
dianhydride
(s-BPDA)
4,4′-diaminodiphenyl
ether
(ODA)
in
absence
isocyanate.
The
PIUs
adjustable
properties
variable
solubility
obtained
by
altering
molar
ratio
molecular
weight
PUas.
Incorporating
PUas
at
5%
could
significantly
lower
Tg
nearly
70
°C
compared
polyimide
(based
on
s-BPDA
ODA),
leading
large
improvement
processing
performance
simultaneously
preserving
polyimide,
where
tensile
strength
reached
146
MPa,
Young's
modulus
was
3.0
GPa
10%
loss
remained
411
°C.
ACS Macro Letters,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1515 - 1520
Published: Oct. 25, 2024
Aramid
fiber
reinforced
composites
(AFRCs)
have
received
increasing
attention
because
of
their
excellent
comprehensive
performance
including
high
mechanical
strength,
modulus,
and
light
weight.
However,
full
recycling
AFs
from
ARCFs
is
difficult
to
achieve.
Herein,
fully
recyclable
are
fabricated
using
reversible
cross-linked
polyurea
plastics
(PUHA)
as
the
matrix.
PUHA
by
cross-linking
linear
hemiaminal
groups.
By
changing
main
chain
structures,
two
types
prepared
with
performance,
which
comparable
that
traditional
engineering
plastics.
can
be
reprocessed
at
least
five
times
without
losing
original
properties
dynamic
exchangeability
Meanwhile,
rapidly
depolymerized
into
under
acidic
conditions.
When
used
a
matrix
fabricate
AFRCs,
AFRCs
exhibit
strength.
Moreover,
due
simple
chemical
ability
plastics,
decomposed
intact
purity.
This
work
presents
use
in
fabrication
provides
future
direction
developing
high-performance
fiber-reinforced
composites.
Industrial & Engineering Chemistry Research,
Journal Year:
2024,
Volume and Issue:
63(32), P. 14190 - 14198
Published: Aug. 2, 2024
The
design
of
supramolecular
phase
change
materials
(SPCMs)
with
both
high
latent
heat
and
recyclability
remains
challenging
via
multivalent
interactions
such
as
hydrogen
bonds.
Herein,
the
SPCMs
are
developed
by
integrating
linear
polyethylene
glycol
(PEG)
functional
components
into
physically
cross-linking
networks
formed
between
polymers
polyurethane,
enabling
a
combination
143.1
J/g
solvent-assisted
recyclability.
presented
tunable
(87.3–143.1
J/g)
temperature
(36.4–59.8
°C)
molecular
weight
content
free
PEGs.
had
much
smaller
spherulite
size
than
PEG
counterparts
due
to
effect
polymer
on
crystallization
behaviors
PEGs
in
SPCMs.
network
endowed
good
thermal
reliability,
stability,
nonleakage
properties.
Significantly,
recycle
were
enabled
completely
dissolving
SPCM
solvent
then
removing
solvent.
nicely
realizes
recycling,
which
will
extend
application
range
materials.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(16), P. 19473 - 19480
Published: Aug. 14, 2024
Two
supramolecular
ionic
nanomaterials
(SINs)
were
successfully
prepared
by
multidentate
imidazolium
organic
salts
and
acid
via
self-assembly
(ISA),
which
is
formed
tetraphenylethylene
(TPE)-based
(TPE-COS
TPE-C16OS)
4,4′,4″,4‴-(ethene-1,1,2,2-tetrayl)tetrabenzenesulfonic
(TPE-SO3H)
in
MeOH.
These
SINs
exhibited
high
thermal
stability
are
insoluble
solvents.
Furthermore,
as
fluorescence
sensors,
they
showed
sensitivity
selectivity
the
detection
of
nitroaromatic
explosives,
especially
for
trinitrophenol
(TNP);
linear
range
SIN-1
SIN-2
was
0.4–128
μM
1–128
μM;
their
λex
set
340
350
nm;
λem
489
458
related
limit
0.87
0.42
μM,
respectively.
The
quenching
mechanism
TNP
synergistic
effect
energy
transfer,
inner
filter,
photoelectron
transfer.
