Dalton Transactions,
Journal Year:
2024,
Volume and Issue:
53(21), P. 8905 - 8909
Published: Jan. 1, 2024
A
new
crystal
compound,
([CdCl
2
(1-methyl-2-pyridone)]
n
),
shows
exceptional
flexibility
and
optical
properties
due
to
its
chiral
structure,
making
it
a
promising
material
for
combining
mechanical
features.
Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
52(9), P. 3098 - 3169
Published: Jan. 1, 2023
Molecular
crystals
have
shown
remarkable
adaptability
in
response
to
a
range
of
external
stimuli.
Here,
we
survey
this
emerging
field
and
provide
critical
overview
the
experimental,
computational
instrumental
tools
being
used
design
apply
such
materials.
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(8), P. 3687 - 3713
Published: Jan. 1, 2024
The
cornerstones
of
the
advancement
flexible
optoelectronics
are
design,
preparation,
and
utilization
novel
materials
with
favorable
mechanical
advanced
optoelectronic
properties.
Molecular
crystalline
have
emerged
as
a
class
underexplored
yet
promising
due
to
reduced
grain
boundaries
defects
anticipated
provide
enhanced
photoelectric
characteristics.
An
inherent
drawback
that
has
precluded
wider
implementation
molecular
crystals
thus
far,
however,
been
their
brittleness,
which
renders
them
incapable
ensuring
compliance
required
for
even
simple
elastic
or
plastic
deformation
device.
It
is
perplexing
despite
plethora
reports
in
meantime
become
available
underpinning
flexibility
crystals,
"discovery"
elastically
plastically
deformable
remains
limited
cases
serendipitous
laborious
trial-and-error
approaches,
situation
calls
systematic
thorough
assessment
these
properties
correlation
structure.
This
review
provides
comprehensive
concise
overview
current
understanding
origins
crystal
flexibility,
working
mechanisms
deformations
such
bending
behaviors,
insights
into
examples
specifically
concerning
photoelectronic
changes
occur
deformed
crystals.
We
hope
this
summary
will
reference
future
experimental
computational
efforts
aimed
towards
improving
behavior
properties,
ultimately
intending
advance
technology.
JACS Au,
Journal Year:
2024,
Volume and Issue:
4(2), P. 279 - 300
Published: Jan. 16, 2024
Flexible
crystals
have
gained
significant
attention
owing
to
their
remarkable
pliability,
plasticity,
and
adaptability,
making
them
highly
popular
in
various
research
application
fields.
The
main
challenges
developing
flexible
lie
the
rational
design,
preparation,
performance
optimization
of
such
crystals.
Therefore,
a
comprehensive
understanding
fundamental
origins
crystal
flexibility
is
crucial
for
establishing
evaluation
criteria
design
principles.
This
Perspective
offers
retrospective
analysis
development
over
past
two
decades.
It
summarizes
elastic
standards
possible
plastic
bending
mechanisms
tailored
diverse
analyzes
assessment
theoretical
basis
applicability.
Meanwhile,
compatibility
between
elasticity
plasticity
has
been
discussed,
unveiling
immense
prospects
elastic/plastic
applications
biomedicine,
electronic
devices,
optics.
Furthermore,
this
presents
state-of-the-art
experimental
avenues
methods
investigating
molecular
interactions
crystals,
which
vital
future
exploration
flexibility.
Aggregate,
Journal Year:
2024,
Volume and Issue:
5(3)
Published: Jan. 23, 2024
Abstract
The
emergence
of
flexible
organic
crystals
changed
the
perception
molecular
that
were
regarded
as
brittle
entities
over
a
long
period
time,
and
sparked
great
interest
in
exploring
mechanically
compliant
crystalline
materials
toward
next‐generation
smart
during
past
decade.
Schiff
base
compounds
are
considered
to
be
one
most
promising
candidates
for
owing
their
easy
synthesis,
high
yield,
stimuli
responsiveness
good
mechanical
properties.
This
paper
gives
an
overview
recent
development
(including
elastic
crystals,
plastic
integrating
elasticity
plasticity)
from
serendipitous
discovery
design
strategies
versatile
applications
such
responses,
optical
waveguides,
optoelectronic
devices,
biomimetic
soft
robots,
photonic
integrated
circuits.
Notably,
atomic
force
microscopy‐micromanipulation
technique
has
been
utilized
bring
multifunctional
macroscopic
level
microscopic
world.
Since
understanding
flexibility
at
through
crystal
engineering
can
assist
us
trace
down
structural
origin
properties,
we
focus
on
packing
structures
various
driven
by
non‐covalent
intermolecular
interactions
close
correlation
with
behaviors.
We
hope
information
given
here
will
help
novel
combined
other
unique
promote
further
research
into
area
applications.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Sept. 8, 2022
Operation
of
temperature
sensors
over
extended
ranges,
and
particularly
in
extreme
conditions,
poses
challenges
with
both
the
mechanical
integrity
sensing
material
operational
range
sensor.
With
an
emissive
bendable
organic
crystalline
material,
here
we
propose
that
crystals
can
be
used
as
mechanically
robust
compliant
fluorescence-based
thermal
wide
coverage
complete
retention
elasticity.
The
exemplary
described
remains
elastically
shows
highly
linear
correlation
emission
wavelength
intensity
between
77
K
to
277
K,
while
it
also
transduces
its
own
fluorescence
active
waveguiding
mode.
This
universal
new
approach
expands
materials
available
for
optical
a
vast
number
class
engineering
opens
opportunities
design
lightweight,
operate
under
conditions
such
are
ones
will
encountered
future
space
exploration
missions.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Dec. 22, 2022
Hybrid
materials
capitalize
on
the
properties
of
individual
to
attain
a
specific
combination
performance
assets
that
is
not
available
with
components
alone.
We
describe
straightforward
approach
preparation
sandwich-type
hybrid
dynamic
combine
metals
as
electrically
conductive
and
polymers
bending,
momentum-inducing
flexible
organic
crystals
mechanically
compliant
optically
transducive
medium.
The
resulting
are
both
electricity
light,
while
they
also
respond
changes
in
temperature
by
deformation.
Depending
metal,
their
conductivity
ranges
from
7.9
21.0
S
µm‒1.
elements
rapidly
curling
or
uncurling
about
0.2
s,
which
one
typical
case
corresponds
exceedingly
fast
deformation
recovery
rates
2187.5°
s‒1
1458.3°
s‒1,
respectively.
In
cyclic
operation
mode,
decreases
less
than
1%
after
10,000
thermal
cycles.
mechanothermal
robustness
dual
functionality
favors
these
candidates
for
variety
applications
organic-based
optics
electronics,
expands
prospects
application
beyond
natural
limits
performance.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(17)
Published: Feb. 10, 2023
Visible
light
guiding
optical
fibers
with
underwater
operational
capability
are
highly
desired
for
subaquatic
communication
and
sensing
technologies.
Herein,
we
present
mechanically
flexible,
blue-violet
fluorescent
(4,4'-bis(2,6-di(1H-pyrazol-1-yl)pyridin-4-yl)biphenyl)
(BPP)
crystal
waveguides
high-aspect
ratio.
These
milli-meter-long
BPP
crystals
guide
actively
passively
in
ambient
conditions
demonstrating
their
amphibian-like
character.
Due
to
the
crystal's
high
flexibility,
fiber's
output
direction
submerged
states
can
be
altered
high-precision
lighting
applications.
The
development
of
such
multi-environment-compatible
flexible
organic
acting
as
materials
possess
enormous
potential
short-range
photonic
Aggregate,
Journal Year:
2023,
Volume and Issue:
4(6)
Published: June 23, 2023
Abstract
Flexible
molecular
crystal
waveguides
based
on
elastic
crystals
(EMCs)
are
essential
in
flexible
and
compact
optical
materials.
An
increased
loss
coefficient
α
due
to
self‐absorption
is
often
a
problem
(OWGs)
of
fluorescent
chemical
materials
waveguiding
photons
active
mode.
Herein,
the
development
anthracene‐based
mixed
(EMMCs)
reported
for
Förster
Resonance
Energy
Transfer
(FRET)‐assisted
OWG.
To
yield
FRET
system
crystals,
1%–5%
acceptor
doping
9,10‐dibromoanthracene
1
was
successful
by
selecting
same
regioisomer
having
electron‐withdrawing
group,
9,10‐diformylanthracene
2
,
as
dopant.
In
addition
conversion
system,
there
difference
modulus
hardness
EMC
C1
EMMC
C2@1
.
However,
behaviour
also
shown
few
percent
acceptor.
The
value
this
EMMC,
composed
including
1%
(0.0077
dB/μm),
much
lower
than
that
(0.1258
dB/μm)
because
reducing
system.
efficient
OWG
successfully
developed
an
appropriate
molecule
its
low
rate
construction.
This
method
practical
approach
various
functional
systems.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(28)
Published: April 25, 2024
The
dense
and
ordered
molecular
arrangements
endow
dynamic
crystals
with
fast
response,
rapid
energy
conversion,
low
dissipation,
strong
coupling
between
heat/light
mechanical
energy.
Most
of
the
known
can
only
respond
to
a
single
stimulus,
materials
that
multiple
stimuli
are
rare.
Here,
we
report
an
organic
crystalline
material
be
bent
plastically
is
also
thermosalient,
as
its
move
when
they
undergo
reversible
phase
transition.
transmit
light
regardless
their
shape
or
phase.
combination
transduction
thermomechanical
deformation
provides
opportunity
switch
waveguiding
capability
in
narrow
temperature
range,
which
holds
tremendous
potential
for
applications
heat-averse
electronic
components,
such
central
processing
units.
Unlike
existing
electronics,
here
completely
therefore
much
lighter,
potentially
reducing
overall
weight
circuits.