Chemistry - An Asian Journal,
Journal Year:
2023,
Volume and Issue:
18(21)
Published: Sept. 22, 2023
The
mechanofluorochromic
(MFC)
characteristics
of
anthracene-based
acceptor-donor-acceptor
(A-D-A)
fluorescent
molecules
are
explored
through
a
comprehensive
investigation
their
photophysical
behaviors.
Six
9,10-diheteroarylanthracene
derivatives
with
varying
acceptor
groups
(pyridin-4-yl,
pyridin-3-yl,
pyridin-2-yl,
pyrimidin-5-yl,
pyrazinyl
and
quinoxalinyl)
synthesized
systematically
characterized.
properties
in
both
solution
solid-state
examined,
revealing
subtle
yet
significant
influences
the
spatial
arrangement
number
nitrogen
atoms
within
group
on
fluorescence
emission.
Single-crystal
structures
these
compounds
provide
insights
into
steric
configurations
intermolecular
packing
modes,
offering
valuable
fundamental
mechanisms
that
underlie
observed
MFC
properties.
This
study
illuminates
intricate
interplay
between
refined
molecular
structure,
thus
presenting
promising
avenues
for
design
advancement
novel
materials.
Aggregate,
Journal Year:
2023,
Volume and Issue:
5(2)
Published: Nov. 1, 2023
Abstract
The
development
of
high‐performance
organic
blue
light‐emitting
emitters
is
in
urgent
to
act
as
an
excitation
source
contribute
the
white
light
generation.
On
other
hand,
investigation
on
optical
waveguides
have
been
received
increasing
attentions
because
they
can
manipulate
propagation
accurately
microscale
boost
optoelectronic
and
energy
conversion
applications.
In
this
work,
we
facilely
prepared
a
deep‐blue
aggregation‐induced
emission
(AIE)
dye,
namely
TPP‐4OMe,
which
shows
high
luminescent
efficiency,
narrow
band
good
stability
aggregate
state.
TPP‐4OMe
be
fabricated
AIE
microfibers
readily
with
definite
morphology
composition.
Based
microfibers,
active
waveguide
transmit
signals
achieved
very
low
loss
coefficient
(
α
)
6.7
×
10
−3
dB
μm
−1
.
Meanwhile,
full‐visible
broadband
low‐loss
passive
well
performed
these
has
never
observed
pure
crystals.
More
interestingly,
excellent
properties
enable
them
wave‐guiding
source,
resulting
distinct
emission.
present
work
not
only
provides
materials
but
also
bridges
realize
efficient
accelerate
practical
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(14), P. 10167 - 10176
Published: March 27, 2024
The
π-bond
enrichment
frameworks
not
only
serve
as
a
crucial
building
block
in
organic
synthesis
but
also
assume
pivotal
role
the
fields
of
materials
science,
biomedicine,
photochemistry,
and
other
related
disciplines
owing
to
their
distinctive
structural
characteristics.
incorporation
various
substituents
into
C═C
double
bonds
tetrasubstituted
alkenes
is
currently
highly
significant
research
area.
However,
with
diverse
on
poses
challenge
achieving
stereoselectivity.
Here,
we
reported
an
efficient
convergent
route
Cu-catalyzed
borylalkynylation
both
symmetrical
unsymmetrical
1,3-diynes,
B2pin2,
acetylene
bromide
construction
boronated
phenyldiethynylethylene
(BPDEE)
derivatives
excellent
chemo-,
stereo-,
regioselectivities.
BPDEE
could
transform
novel
π-conjugated
gem-diphenyldiethynylethylene
(DPDEE),
vinylphenyldiethynylethylene
(VPDEE),
phenyltriethynylethylene
(PTEE)
by
stepwise
process,
which
provides
flexible
platform
for
complex
that
were
difficult
synthesize
previous
methods.
initial
optical
characterization
revealed
synthesized
molecules
exhibited
aggregation-induced
emission
(AIE)
properties,
further
establishes
groundwork
future
applications
enriches
advances
field
functional
research.
Chemistry - A European Journal,
Journal Year:
2023,
Volume and Issue:
29(62)
Published: Aug. 16, 2023
Abstract
Inkless
and
erasable
printing
(IEP)
based
on
chromic
materials
holds
great
promise
to
alleviate
environmental
sustainable
problems.
Metal–organic
polymers
(MOPs)
are
bright
platforms
for
constructing
IEP
materials.
However,
it
is
still
challenging
design
target
MOPs
with
excellent
specific
functions
rationally
due
the
intricate
component‐structure‐property
relationships.
Herein,
an
effective
strategy
was
proposed
rational
IEP‐MOP
The
stimuli‐responsive
viologen
moiety
introduced
into
construction
of
give
potential
behaviors
two
different
coordination
models
(i.
e.
bilateral
model,
M
1
;
unilateral
coordinated
2
)
same
ligand
were
designed.
Aided
by
theoretical
calculations,
model
recommended
secondarily
as
a
more
suitable
system
Along
this
line,
representative
viologen‐Zn
II
synthesized
successfully.
Experiments
exhibit
that
does
have
quicker
stimuli
response,
stronger
color
contrast
longer
radical
lifetime
compared
.
Significantly,
obtained
1‐IEP
media
brightly
inherits
characteristics
flexibility
paper
at
time,
which
achieves
most
daily
requirements,
well
enough
resolution
durability
be
used
in
identification
smart
device.
ACS Applied Optical Materials,
Journal Year:
2024,
Volume and Issue:
2(6), P. 1025 - 1045
Published: June 3, 2024
Mechanoscientific
research
fields
encompassing
chemistry,
physics,
and
biology
have
advanced
significantly
over
the
last
two
decades.
Notably,
study
of
photon-emitting
phenomena
in
molecular
solids
responsive
to
mechanical
stimulation
is
known
as
mechanoresponsive
luminescence
(MRL)
mechanoluminescence
(ML).
These
exhibit
significant
potential
for
applications
such
sensor
technology
anti-counterfeiting
measures.
The
versatility
observed
designs,
enabling
control
thresholds
wavelengths,
coupled
with
diverse
mechanisms
inducing
deformation,
heat,
light,
sound,
broadens
domain
mechanically
sensitive
materials.
However,
understanding
nanomechanical
aspects
about
these
remains
elusive.
A
comprehensive
examination
interplay
among
structures,
deformation
characteristics,
responses
essential
further
exploration.
Such
insights
are
crucial
addressing
intrinsic
limitation
"one-time
use"
associated
deformation-induced
properties,
necessitating
a
focus
on
solid-state
healing
processes
well.
Recent
investigations
into
inorganic-based
ML
systems
applied
free-standing
light
sources
metamaterial
design
foreshadow
future
trajectory
molecular-based
systems.
advancements
aim
facilitate
secondary
use
generated
photons
efficient
capture/transfer
cues,
enhancing
optical
output.
Molecular
stands
poised
make
substantial
contributions
ongoing
rapid
progress
mechanoscience
due
an
expanding
synthetic
repertoire,
heightened
biocompatibility,
precise
"structural
control"
at
macroscopic
scales.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(24), P. 16540 - 16548
Published: June 11, 2024
Emission
from
crystalline
organic
solids
is
often
quenched
by
nonemissive
energy-transfer
deexcitation
processes.
While
dispersion
of
fluorophores
in
polymers
or
other
hosts
has
been
used
to
enhance
the
emission
intensity,
this
strategy
results
randomization
guest
orientation
and
optical
losses
at
grain
boundaries.
Here,
we
report
doping
inherently
single
crystals
anilinium
bromide
with
three
fluorescent
molecules.
The
process
equips
crystal
characteristics
that
tune
blue
deep
orange.
intensity
can
be
reversibly
modulated
ferroelastic
twinning,
which
causes
material
function
as
a
multiemissive
force
sensor.
This
approach
opens
up
new
pathways
manipulation
emissive
properties
may
have
substantial
implications
for
optoelectronic
devices
sensors.
Applied Physics Letters,
Journal Year:
2024,
Volume and Issue:
124(10)
Published: March 4, 2024
In
the
past
two
decades,
advancement
of
aggregation-induced
emission
(AIE)
has
greatly
advanced
our
understanding
organic
luminescence
and
facilitated
application
luminescent
materials.
AIE
luminogens
(AIEgens)
emit
weakly
in
solutions
but
strongly
aggregated
states.
This
significant
difference
between
states
AIEgens
shown
that
there
is
much
to
explore
mesoscopic
world
(the
intermediary
phase).
Accordingly,
research
paradigm
aggregate
science
proposed.
The
path
new
materials
relies
not
only
on
molecule
syntheses
also
control
molecular
aggregation,
which
bridges
gap
solids.
this
Perspective,
we
outline
three
general
strategies
for
managing
aggregation
stimulate
ideas
provide
guidance
controllable
aggregation.
