Applied Sciences,
Journal Year:
2022,
Volume and Issue:
12(21), P. 10708 - 10708
Published: Oct. 22, 2022
A
method
to
determine
the
power
of
a
continuous
wave
laser
from
photothermal
heating
poly(dimethyl
siloxane)
film
is
reported.
The
base
was
doped
with
oil
red
O
and
cured
on
surface
relief
grating.
grating
period
shown
increase
proportional
temperature
by
monitoring
decrease
in
diffraction
angle
probe
beam.
10s
illumination
(CW)
pump
beam
absorbed
increased
film’s
temperature,
which
resulted
local
strain
that
could
be
modeled
using
two-dimensional
heat
kernel.
amplitude
transient
response
found
linearly
correlated
power.
Macromolecular Rapid Communications,
Journal Year:
2021,
Volume and Issue:
43(5)
Published: Dec. 29, 2021
Abstract
Stimuli‐responsive
structurally
dynamic
polymers
are
capable
of
mimicking
the
biological
systems
to
adapt
themselves
surrounding
environmental
changes
and
subsequently
exhibiting
a
wide
range
responses
ranging
from
self‐healing
complex
shape‐morphing.
Dynamic
(SHPs),
shape‐memory
(SMPs),
liquid
crystal
elastomers
(LCEs),
which
three
representative
examples
stimuli‐responsive
polymers,
have
been
attracting
broad
growing
interest
in
recent
years
because
their
potential
applications
fields
electronic
skin,
sensors,
soft
robots,
artificial
muscles,
so
on.
Recent
advances
challenges
developments
toward
SHPs,
SMPs,
LCEs
reviewed,
focusing
on
chemistry
strategies
reaction
mechanisms
that
enhance
performances
materials
including
self‐healing,
reprocessing,
reprogramming.
The
different
chemistries
enhanced
functions
compared
discussed,
where
summary
tables
presented:
A
library
bonds
resulting
characteristics
materials.
Finally,
critical
outline
unresolved
issues
future
perspectives
emerging
is
provided.
Photoresponsive
polymers
have
gained
specific
attention
because
of
tuning
their
physicochemical
properties
upon
induction
a
certain
wavelength
light.
Generally,
such
polymeric
materials
are
prepared
by
incorporation
photosensitive
moieties
in
the
polymer
structure.
Photoresponsivity
smart
could
be
reversible,
irreversible,
and
dynamic
depending
on
nature
light-sensitive
group
incorporated
chain
These
photoresponsive
mainly
used
as
photoluminescent
polymers,
photochromic
photocleavable
photocross-linkable
photoadaptable
based
response
type
chemical
reaction
species.
This
chapter
provides
brief
conclusive
review
these
types
with
main
focus
different
characteristics,
which
chromism,
fluorescence
emission,
cleavage,
cross-linking,
also
exchange
reactions.
characteristics
responses
to
light
irradiation.
Finally,
critical
insights
this
field
its
future
advances
discussed.
Journal of Materials Chemistry C,
Journal Year:
2022,
Volume and Issue:
10(35), P. 12731 - 12740
Published: Jan. 1, 2022
Conjugated
polymers
(CPs)
with
remarkable
photothermal
effect
were
incorporated
into
liquid
crystal
elastomers
(LCEs)
to
develop
near-infrared
(NIR)
light-responsive
actuators
tunable
deformation
and
locomotion.
Macromolecules,
Journal Year:
2023,
Volume and Issue:
56(15), P. 5765 - 5773
Published: June 29, 2023
Liquid
crystal
elastomers
(LCEs)
are
excellent
polymer
materials
for
a
wide
range
of
applications,
including
soft
actuators
and
shape
memory
materials.
At
present,
some
dynamic
covalent
bonds
(DCBs)
have
been
introduced
into
LCEs
to
achieve
reprogrammability.
However,
the
contradiction
between
reprogrammability
stable
actuation
performance
is
still
challenge.
One
solutions
introduce
photoactivated
DCBs
thermotropic
maintain
their
thermal
adaptability.
Therefore,
it
meaningful
find
DCB
with
stability
mild
photoresponse
application
in
LCEs.
Herein,
we
adopt
chemistry
allyl
selenide,
which
not
only
achieves
separation
network
reconfiguration
conditions
(light)
from
LC
phase
transition
(heat)
but
also
multiple
under
visible
light
(405–450
nm).
This
stimulation
sustainable
exchange
capability
offers
great
possibilities
design
covalently
adaptable
European Journal of Organic Chemistry,
Journal Year:
2021,
Volume and Issue:
2021(30), P. 4350 - 4357
Published: July 16, 2021
Abstract
We
herein
report
an
unprecedented
xanthate‐based
protocol
for
the
preparation
of
aryl‐alkyl
thioethers.
Heating
xanthates
with
aryl
halides
and
namely
cesium
carbonate
in
methanol
provides
target
thioethers
generally
good
yields
within
short
reaction
times.
This
method
allows
one
to
avoid
contact
odorous
thiols
also
introduce
substituents
which
corresponding
are
virtually
unavailable
or
inconvenient
use.
Polymers,
Journal Year:
2022,
Volume and Issue:
14(15), P. 2997 - 2997
Published: July 24, 2022
This
work
presents
the
development
of
highly
efficient
photothermal
thin
films
(PTFs)
and
demonstration
their
application
on
miniaturized
polymer-based
soft
actuators.
The
proposed
PTF,
which
comprises
acrylic-based
black
paint
EGaIn
liquid
metal
(LM)
microdroplets,
serves
as
an
excellent
absorber
for
efficiently
converting
near-infrared
(NIR)
irradiation
into
heat
actuating
liquid-crystal
elastomer
(LCE)
introduction
LM
microdroplets
PTFs
effectively
increases
overall
thermal
efficiency
PTFs.
Miniaturized
crawlers
monolithically
integrated
with
NIR-driven
LCE
actuators
are
also
implemented
demonstrating
PTF.
crawler’s
locomotion,
is
inspired
by
rectilinear
movement
snakes,
generated
PTF
inducing
LC-to-isotropic
phase
transition
LCEs.
experimental
results
show
that
introducing
can
reduce
time
constants
70%.
Under
periodic
on/off
NIR
illumination
cycles,
locomotion
different
dimensions
demonstrated.
measurement
indicate
not
only
essential
enabling
actuation
but
quite
durable
repeated
operation.
