ACS Omega,
Journal Year:
2024,
Volume and Issue:
9(42), P. 42814 - 42821
Published: Oct. 10, 2024
Soft
electro-ionic
actuators
have
received
extensive
research
and
attention
due
to
their
advantages
such
as
low
voltage
response
adjustable
deformation.
However,
they
not
been
able
enter
the
actual
industry
application
like
traditional
rigid
actuators;
one
of
reasons
may
be
that
kinematic
properties
less
studied.
The
actuator
based
on
Ti3C2Tx
MXene-CNT/PPy
electrode
prepared
in
this
paper
shows
good
bending
displacement
(18.8
mm)
strain
(0.63%)
under
4
V
voltage.
In
article,
overlapping
nature
exponential
function
relationship
end-point
trajectories
are
preliminarily
discussed,
morphology
change
cubic
polynomial
body
considered.
Moreover,
application,
a
novel
proof-of-concept
model
smart
wearable
finger
straps
is
proposed.
This
study
unique
attempt
hoped
provide
new
perspective
field
soft
actuators.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(32)
Published: June 4, 2024
Abstract
Developing
high‐performance
polarization‐sensitive
ultraviolet
photodetectors
is
crucial
for
their
application
in
military
remote
sensing,
detection,
bio‐inspired
navigation,
and
machine
vision.
However,
the
significant
absorption
visible
light
range
severely
limits
of
photodetectors,
such
as
high‐quality
anti‐interference
imaging.
Here,
based
on
a
wide‐bandgap
organic
semiconductor
single
crystal
(trans‐1,2‐bis(5‐phenyldithieno[2,3‐b:3′,2′‐d]thiophen‐2‐yl)ethene,
BPTTE),
solar‐blind
with
dichroic
ratio
close
to
4.26
are
demonstrated.
The
strong
anisotropy
2D
grown
BPTTE
crystals
molecular
vibration
optical
characterized
by
various
techniques.
Under
voltage
modulation,
stable
efficient
detection
polarized
demonstrated,
attributed
intrinsic
transition
dipole
moment
bc
plane,
rather
than
other
factors.
Finally,
high‐contrast
polarimetric
imaging
successfully
demonstrated
highlighting
potential
semiconductors
photodetectors.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 16, 2024
Abstract
Organic
fluorophores
with
tunable
π‐conjugated
paths
have
attracted
considerable
attention
owing
to
their
diverse
properties
and
promising
applications.
Herein,
we
present
a
tailored
butterfly‐like
molecule,
2,2’‐(2,5‐bis
(2,2‐diphenylvinyl)‐1,4‐phenylene)dinaphthalene
(BDVPN),
which
exhibits
photophysical
features
in
its
two
polymorphs.
The
BP
phase
crystal,
“aligned
wings”
conformation,
possesses
emissive
characteristics
that
are
nearly
identical
those
dilute
solutions.
In
contrast,
the
BN
adopts
an
“orthogonal
unusual
hypsochromic‐shifted
emission
compared
solution
counterparts.
This
intriguing
originates
from
reduction
effective
conjugated
length
of
molecular
skeleton.
Notably,
crystals
also
exhibit
exceptional
optical
performance,
featuring
high‐efficiency
(76.6
%),
low‐loss
waveguides
(0.571
dB
mm
−1
),
deep‐blue
amplified
spontaneous
(ASE)
narrow
full
width
at
half
maximum
(FWHM:
6.4
nm),
unique
200
nm
bathochromic
shift
piezochromic
luminescence.
Abstract
The
utilization
of
organic
crystals
in
visible
light
communication
(VLC)
technologies
necessitates
affordable
light‐emitting
diodes
(LEDs)
as
sources
to
run
photonic
devices.
A
sustainable
strategy
is
demonstrated
utilizing
a
commercial
ultravoilet
(UV)
LED
source
power
flexible
crystal
waveguides
(
Z
)‐3‐(3′,5′‐bis(trifluoromethyl)‐[1,1′‐biphenyl]‐4‐yl)‐2‐(4‐methoxyphenyl)
acrylonitrile
(CF
3
OMe),
9,10‐bis(phenylethynyl)anthracene
(BPEA),
and
2,2′‐((1
E
,1′
)‐hydrazine‐1,2‐diylidenebis(methaneylylidene))diphenol
(SAA),
transducing
their
respective
blue,
orange,
yellow
fluorescence
signals.
focused
LED's
capability
includes
i)
exciting
extremely
bent
waveguides,
ii)
evanescently
SAA
waveguide
via
energy
transfer
from
CF
OMe
waveguide,
iii)
selectively
splitting
various
signals
using
2
×
hybrid
directional
coupler
based
on
SAA‐BPEA
crystals.
These
demonstrations
underscore
the
practicality
proposed
technique
for
applications
systems
related
VLC.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 19, 2024
Abstract
Molecular
crystals
carry
a
great
potential
as
new
soft
smart
materials,
with
plethora
of
recent
examples
overcoming
the
major
obstacle
mechanical
flexibility,
and
this
research
direction
holds
enormous
to
revolutionize
optics,
electronics,
medicine,
space
exploration.
However,
shaping
organic
into
desired
shapes
sizes
remains
practical
challenge
due
lack
control
over
crystallization
process,
difficulties
in
post‐processing
without
introduction
defects
that
are
usually
imparted
by
their
nature.
Here
we
present
an
innovative
approach
employs
photochemical
processing
for
precise
nondestructive
cutting
molecular
crystal.
Our
proposed
method
uses
light
post‐process
size
shape,
similar
using
cut
other
materials.
This
reaction
induces
strain,
ensuring
sharp
cleavage
need
melting
or
processes.
We
further
demonstrate
producing
arbitrary
size,
which
can
be
used
controllable
optical
waveguides.
Among
applications,
prepare
dynamic
crystals,
particularly
those
aspect
ratios
crucial
deformation,
such
flexible
robotics,
sensing.
Molecular
crystals
that
respond
to
multiple
stimuli
are
gaining
significant
attention
for
their
potential
in
smart
materials
like
actuators
and
sensors.
However,
imparting
stimuli-responsive
properties
a
single
crystal
remains
major
challenge.
Herein,
we
report
two
cyanostilbene
derivative-based
1
2,
with
various
responses
such
as
mechanical
stress,
light,
acid
vapors,
etc.
Both
2
demonstrated
flexibility
reversible
acidochromism.
Additionally,
also
exhibited
light-induced
photobending,
which
is
ascribed
Z
E
photoisomerization.
Detailed
structure–property
correlation
was
established
unravel
distinct
responses.
The
development
of
these
multitasking
may
find
applications
actuators,
anticounterfeiting
materials,
more.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 20, 2024
Abstract
Flexible
organic
crystalline
optical
waveguides,
which
deliver
input
or
self‐emit
light
through
various
dynamic
crystals,
have
attracted
increasing
attention
in
the
past
decade.
However,
modulation
of
waveguide
output
relies
on
chemical
design
and
substituent
modification,
being
time‐consuming
laborious.
Here
we
report
an
elastic
crystal
that
displays
long‐distance
transduction
up
to
2.0
cm
ultra‐wide
waveguides
between
red
(645
nm)
near
infrared
(731
both
pristine
elastically
bent
states
based
a
pre‐designed
self‐absorption
effect.
The
flexible
can
be
precisely
reversibly
reconfigured
by
controlling
irradiation
point.
In
addition,
deep‐red
amplified
spontaneous
emission
(ASE)
is
able
transduce
5.0
mm
with
ultra‐low
loss
coefficient
0.093
dB/mm
has
been
attained.
To
best
our
knowledge,
this
first
ASE
waveguides.
present
study
not
only
provides
simple
yet
effective
strategy
remarkably
modulate
but
also
demonstrates
superiority
lasing
over
normal
as
communication
elements.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 16, 2024
Abstract
Organic
fluorophores
with
tunable
π‐conjugated
paths
have
attracted
considerable
attention
owing
to
their
diverse
properties
and
promising
applications.
Herein,
we
present
a
tailored
butterfly‐like
molecule,
2,2’‐(2,5‐bis
(2,2‐diphenylvinyl)‐1,4‐phenylene)dinaphthalene
(BDVPN),
which
exhibits
photophysical
features
in
its
two
polymorphs.
The
BP
phase
crystal,
“aligned
wings”
conformation,
possesses
emissive
characteristics
that
are
nearly
identical
those
dilute
solutions.
In
contrast,
the
BN
adopts
an
“orthogonal
unusual
hypsochromic‐shifted
emission
compared
solution
counterparts.
This
intriguing
originates
from
reduction
effective
conjugated
length
of
molecular
skeleton.
Notably,
crystals
also
exhibit
exceptional
optical
performance,
featuring
high‐efficiency
(76.6
%),
low‐loss
waveguides
(0.571
dB
mm
−1
),
deep‐blue
amplified
spontaneous
(ASE)
narrow
full
width
at
half
maximum
(FWHM:
6.4
nm),
unique
200
nm
bathochromic
shift
piezochromic
luminescence.
