Polymers,
Год журнала:
2024,
Номер
16(23), С. 3339 - 3339
Опубликована: Ноя. 28, 2024
Block
copolymers
(BCPs)
have
attracted
considerable
attention
due
to
their
ability
form
a
variety
of
complex
assemblies
with
diverse
morphologies
and
functions
in
solution.
By
incorporating
liquid
crystalline
(LC)
moieties,
the
LC
side
chains
significantly
affect
sizes
BCP
assemblies.
In
this
study,
we
synthesized
copolymer
an
block
containing
triphenylene
(HAT)
discotic
mesogen
short
methylene
chains.
enhancing
π–π
interaction
between
mesogens,
doping
orderedness
was
enhanced
able
dictate
self-assembly
behaviors
Additionally,
lengths
resultant
fibrillar
micelles
were
easily
tuned
by
adjusting
dopant
content.
More
interestingly,
two
growth
modes,
nucleation
coupling,
observed
during
formation
fibrils.
Consequently,
long-term
aging
sufficient
concentration,
large
portion
these
fibrils
underwent
end-to-end
coupling
long
fibrils,
allowing
organogel
via
inter-fibrillar
entanglement.
New Journal of Chemistry,
Год журнала:
2020,
Номер
44(26), С. 10902 - 10910
Опубликована: Янв. 1, 2020
The
fully
light-driven
LCE/SWCNT
composite
films
with
exchangeable
covalent
crosslinks
possess
reconfigurability
and
recyclability,
enabling
shrinking,
bending
curling
motions.
Polymer Chemistry,
Год журнала:
2022,
Номер
13(26), С. 3915 - 3929
Опубликована: Янв. 1, 2022
Herein,
the
microscopic
ordered
aggregation
morphologies
of
SCLCP
films
are
investigated,
and
molecular
structures
with
regular
arrangement
can
increase
heat
transfer
via
suppressing
scattering
phonons,
thus
greatly
improving
λ
SCLCPs.
New Journal of Chemistry,
Год журнала:
2019,
Номер
43(40), С. 15968 - 15978
Опубликована: Янв. 1, 2019
Synthesis
and
characterisation
of
two
new
azo-based
polysiloxane
liquid
crystalline
elastomers
containing
non-mesogenic
monomers
different
cross-linkers
are
described.
Applied Sciences,
Год журнала:
2021,
Номер
11(11), С. 5037 - 5037
Опубликована: Май 29, 2021
Chiral-nematic
liquid
crystal
(N*
LC)
elastomers
exhibit
mechano-optical
responsive
behavior.
However,
practical
sensor
applications
have
been
limited
by
the
intrinsic
sensitivity
of
N*
LC
to
environmental
conditions,
such
as
temperature.
Although
densely
cross-linked
network
polymers
high
thermal
stability,
they
are
not
proper
for
mechanical
due
glass
transition
temperatures
and
low
flexibility.
To
overcome
these
issues,
we
focused
on
enhancing
stability
introducing
noncovalent
cross-linking
sites
via
intermolecular
interactions
between
molecules
bonded
polymer
network.
with
a
cyanobiphenyl
derivative
side-chain
mesogen
exhibited
behavior,
hypsochromic
shift
reflection
peak
wavelength
under
an
applied
tensile
strain
quick
shape
color
recovery
owing
elasticity.
Notably,
showed
resistance
harsh
environments,
including
various
solvents.
Interactions,
π–π
stacking
dipole–dipole
interactions,
units
can
act
weak
cross-links,
thus
improving
phase
without
affecting
response.
Thus,
great
potential
realization
sensors.
Macromolecular Chemistry and Physics,
Год журнала:
2021,
Номер
222(20)
Опубликована: Авг. 13, 2021
Abstract
Liquid
crystalline
(LC)
polymers
find
still
a
lot
of
interest,
whereby
the
focus
is—at
present—on
LC‐elastomers
with
different
phases
and
their
application
for
mechanical
actuation.
While
LC‐phases
in
LC‐polymers
can—generally—be
well
described
analogy
to
low
molar
mass
counterparts,
some
special
properties
became
evident
systems
smectic
phases.
They
are
related
modulation
nanophase
segregation
within
layers
include
often
formation
sublayers
consisting
poorly
compatible
parts
polymer
like
bulky
(=non
mesogenic)
units,
ionic
groups,
or
miscible
main
chain
(e.g.,
polysiloxanes).
Such
behavior
can
be
found
semiflexible
LC‐main
LC‐side
polymers.
Here
authors
i)
describe
which
such
modification
structure
is
observed,
ii)
discuss
origin
deviation,
iii)
possible
design
functional
materials.
The
substructures
allow,
example,
mixing
other
polymers,
have
good
affinity
second
sublayer.
It
also
allows
it
separate,
extent,
network
from
packing
mesogens
LC‐polysiloxanes.
Molecules,
Год журнала:
2021,
Номер
26(20), С. 6193 - 6193
Опубликована: Окт. 14, 2021
Chiral
nematic
(N*)
liquid
crystal
elastomers
(LCEs)
are
suitable
for
fabricating
stimuli-responsive
materials.
As
crosslinkers
considerably
affect
the
N*LCE
network,
we
investigated
effects
of
crosslinking
units
on
physical
properties
N*LCEs.
The
N*LCEs
were
synthesized
with
different
types
crosslinkers,
and
relationship
between
N*LC
polymeric
system
unit
was
investigated.
emit
color
by
selective
reflection,
in
which
changes
response
to
mechanical
deformation.
LC-type
crosslinker
decreases
helical
twisting
power
increasing
total
molar
ratio
mesogenic
compound.
exhibits
mechano-responsive
coupling
orientation
polymer
where
exhibit
degrees
pitch
variation
depending
crosslinker.
Moreover,
increases
Young's
modulus
N*LCEs,
long
methylene
chains
increase
breaking
strain.
An
analysis
experimental
results
verified
effect
providing
a
design
rationale
materials
mechano-optical
sensor
applications.
Liquid Crystals,
Год журнала:
2018,
Номер
45(12), С. 1783 - 1794
Опубликована: Июнь 20, 2018
A
series
of
siloxane-based
chiral
smectic
liquid
crystalline
elastomers
(ChSLCEs)
formed
by
a
dimer-type
monomer
(M1),
(M2)
and
cross-linker
(CL)
were
reported.
M1
M2
both
new
crystals
with
dimer
structures,
their
chemical
structures
purities
characterised
Fourier
transform
infrared
spectra
1H
NMR.
The
thermal
stability
mesomorphism
monomers,
ChSLCEs
examined
different
analytical
techniques.
results
showed
monomers
exhibited
excellent
properties.
combination
phases
from
the
two
side
chains
endowed
obtained
good
effect
dosages
cross-linkers
on
mesomorphic
properties
was
also
examined.
temperature
ranges
mesophase-isotropic
narrowed
increasing
addition
according
to
differential
scanning
calorimetry.
All
gravity
analysis
results.
effective
cross-link
densities
calculated
swelling
experiments
give
fact
that
molecular
weights
between
cross-linking
points
decrease
increase
cross-linkers.
Novel
achiral
(M2),
an
crosslinking
agent
have
been
synthesized
form
chain
LCE1-LCE7
graft
copolymerization
poly(methylhydrogeno)siloxane
backbone
International Journal of Molecular Sciences,
Год журнала:
2021,
Номер
22(21), С. 11980 - 11980
Опубликована: Ноя. 5, 2021
Flexible
construction
of
permanently
stored
supramolecular
chirality
with
stimulus-responsiveness
remains
a
big
challenge.
Herein,
we
describe
an
efficient
method
to
realize
the
transfer
and
storage
in
intrinsically
achiral
films
side-chain
polymeric
liquid
crystal
system
by
combining
chiral
doping
cross-linking
strategy.
Even
helical
structure
was
destroyed
UV
light
irradiation,
memorized
information
covalent
network
enabled
complete
self-recovery
original
superstructure.
These
results
allowed
building
novel
chiroptical
switch
without
any
additional
source
multiple
types
polymers,
which
may
be
one
competitive
candidates
for
use
stimulus-responsive
chiro-optical
devices.
