ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
17(1), С. 2339 - 2348
Опубликована: Дек. 26, 2024
Advanced
elastomers
with
outstanding
strength,
toughness,
and
reusability
hold
significant
potential
for
diverse
applications.
Using
photochemistry
mechanochemistry
to
develop
such
materials
has
become
a
very
effective
strategy.
Here,
we
report
that
photoreversible
coumarin-based
mechanophores
can
make
force-/light-triggered
cycloreversion
are
chemically
incorporated
into
polyurethane
simultaneously
enhance
their
strength
toughness.
Coumarin
dimer
mechanophore
cross-linkers
formed
in
the
elastomer
after
exposure
365
nm
irradiation,
leading
networks
dramatically
enhanced
mechanical
properties.
The
tensile
of
HNA-PU2000
coumarin
could
increase
from
13.9
26.9
MPa,
elongation
at
break
726
1053%,
toughness
25.6
119.7
MJ·m–3,
contrast
its
counterpart
without
mechanophores.
Additionally,
exhibits
decent
reusable
capability
via
under
stress
or
254
irradiation.
This
mechano-/photochemical
strategy
improve
provides
facile
approach
development
high-performance
materials.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Physical
understanding
and
determination
of
different
analytes
without
the
need
for
advanced
additional
equipment
are
highly
important,
which
can
be
achieved
by
using
stimuli-induced
chromic
materials.
chemical
incorporation
responsive
chromophores
into
polymers
results
in
fabrication
polymers.
Chromic
electrospun
nanofibers
prepared
electrospinning
technique,
their
stimuli-responsivity
is
improved
due
to
high
surface-to-volume
ratio.
This
Perspective
focuses
on
recent
studies
developments
nanofibers.
Within
this
Perspective,
these
divided
classes
photochromic,
thermochromic,
electrochromic,
mechanochromic,
halochromic,
solvatochromic,
hydrochromic,
ionochromic
according
stimuli
they
respond.
In
addition,
preparation
methods,
compounds,
conditions,
response
mechanisms,
applications
will
discussed.
The
main
such
food
packaging
sensors,
health
monitoring
anticounterfeiting
materials,
ink-free
rewritable
media,
smart
clothing.
Several
new
strategies
also
proposed
future
studies.
multiresponsive
that
combine
properties
a
single
system
multifunctional
merge
stimuli-responsive
with
other
functionalities
considered
future.
aims
assist
researchers
scientists
development
applications,
including
multimode
sensors
packaging,
shape
memory-assisted
dual-mode
encryption
important
data.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(12), С. 14695 - 14706
Опубликована: Июнь 18, 2024
Dual
temperature-
and
photoresponsive
polymer
nanoparticles
with
sensitivity
toward
temperature
variation
through
fluorescence
resonance
energy
transfer
(FRET)-assisted
white
light
emission
(WLE)
were
synthesized
using
distillation–precipitation
polymerization.
A
chemosensor
of
temperature,
light-emitting
anticounterfeiting
inks,
different
products
for
security
encryption
confidential
documents
prepared
on
the
basis
FRET
mechanism
due
to
an
efficient
spectral
overlap
between
coumarin
donor
absorption
rhodamine
B
(RhB)
acceptor.
At
150
μL
RhB
doping,
a
strong
WLE
was
observed
as
consequence
two
complementary
colors.
Upon
increasing
in
range
25–85
°C,
distance
affected
squeezing
thermoresponsive
moieties
response
heating;
thus,
turned
off.
These
stimulus-responsive
fluorescent
finally
used
sensors
applications
by
incorporating
on/off
based
preparation
paper,
silk,
ink
incorporation
species
into
paper
pulp,
impregnation
silk
colloidal
nanoparticles,
adding
poly(ethylene
glycol)
glycerol
colloids,
respectively.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 16, 2025
Encapsulated
phase
change
materials
have
gained
significant
interest
in
thermal
energy
storage
recent
years.
Herein,
novel
thermochromic
and
fluorescent
nanoencapsulated
were
developed
by
coencapsulation
of
crystal
violet
lactone,
bisphenol
A,
cetyl
alcohol
or
1-dodecanol,
hexadecane
into
poly(methyl
methacrylate)
(PMMA)
shell
cross-linked
a
coumarin
cross-linker
through
miniemulsion
polymerization.
Different
ternary
mixture
to
PMMA
ratios
selected
elucidate
their
effect
on
the
final
properties
dual
nanocapsules.
Encapsulation
core
structure
investigated
Fourier-transform
infrared
spectroscopy
proton
nuclear
magnetic
resonance
spectroscopy.
The
nanometric
size,
core–shell
morphology,
relatively
uniform
particle
size
distribution
nanocapsules
confirmed
field-emission
scanning
electron
microscopy,
transmission
dynamic
light
scattering.
Ultraviolet–visible
diffuse
reflectance
fatigue
resistance
over
10
cooling–heating
cycles,
fluorescence
illustrated
Thermal
encapsulation
efficiencies
measured
using
differential
calorimetry.
stability
prepared
was
thermogravimetric
analysis.
sample
with
3:1
ratio
encapsulated
containing
1-dodecanol
as
an
optimal
for
different
applications
due
its
high
color
rate
−16
26
°C.
optimized
used
anticounterfeiting
inks
security
documents
packaging
distinguish
between
original
products
counterfeit
counterparts.
In
addition,
they
prepare
thermal-energy-regulating
windows
coatings
buildings.
can
be
temperature
regulation
buildings
embellish
interior
spaces
architectural
design.
also
wearable
devices
that
adjust
ambient
around
body
absorbing,
storing,
releasing
amount
latent
heat
during
process.
