Angewandte Chemie,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 22, 2024
Abstract
Organic
circularly
polarized
luminescence
(CPL)
plays
crucial
roles
in
chemistry
and
biology
for
the
potential
chiral
recognition,
asymmetric
catalysis,
3D
displays,
biological
probes.
The
long‐lived
luminescence,
large
Stokes
shift,
unique
chiroptical
properties
make
organic
room‐temperature
phosphorescence
(CPP)
a
new
research
hotspot
recent
years.
Nevertheless,
achieving
high‐performance
CPP
is
still
challenging
due
to
sensitivity
complexity
of
integrating
triplet
excitons
polarization
within
materials.
This
review
summarizes
latest
advances
CPP,
ranging
from
design
strategies
photophysical
underlying
mechanisms
applications.
Specifically,
generating
are
systemically
categorized
discussed
according
interactions
between
units
chromophores.
applications
light‐emitting
diodes,
sensing,
afterglow
information
encryption
also
illustrated.
In
addition,
we
present
current
challenges
perspectives
on
developing
CPP.
We
expect
this
provide
some
instructive
principles
fabricate
materials,
offering
an
in‐depth
understanding
mechanism
paving
way
toward
diverse
practical
The Journal of Physical Chemistry Letters,
Год журнала:
2025,
Номер
unknown, С. 725 - 730
Опубликована: Янв. 12, 2025
Circularly
polarized
luminescence
(CPL)
materials
have
drawn
increasing
attention
for
their
potential
applications
in
optical
displays
and
chemo/biosensing.
Nevertheless,
the
construction
of
circularly
room-temperature
phosphorescence
(CPRTP)
is
still
a
significant
challenge.
In
this
work,
four
liquid
crystalline
polymer
network
films
with
RTP
properties
been
fabricated
via
photopolymerization
cholesteric
liquid-crystalline
mixtures
containing
different
amounts
commercially
available
dyes.
The
show
yellow-green
structural
color,
enhanced
RTP,
blue
CPL,
green
CPRTP
dissymmetry
factors
up
to
-0.90,
quantum
yields
14.8%,
emission
lifetimes
607
ms.
Furthermore,
prepared
film
pattern
presents
colors
reflective,
fluorescent,
phosphorescent
modes.
This
work
not
only
provides
deep
understanding
CPRTP,
but
also
facile
strategy
fabricate
patterns
decoration
anticounterfeiting
applications.
Abstract
Harnessing
nanoscale
molecular
structural
changes
to
achieve
precise
control
over
macroscopic
devices
represents
an
emerging
and
effective
strategy.
One
promising
approach
involves
the
introduction
of
light‐driven
chiral
dopants
into
liquid
crystals
(LCs),
enabling
fine‐tuned
modulation
helical
superstructures
in
cholesteric
(CLCs)
via
photoisomerization.
This
strategy
opens
up
exciting
possibilities
for
development
innovative
photo‐responsive
with
dynamic
functionalities.
review
focuses
on
most
common
used
LCs,
including
azobenzene,
diarylethene,
α
‐cyanostilbene
overcrowded
alkene.
The
chemical
design
principles
these
four
types
switches
are
highlighted,
along
their
abilities
induce
pitch
inversion
CLCs.
Finally,
applications
controlling
showcased,
particularly
display
technologies,
anti‐counterfeiting,
optical
3D
droplet
manipulation.
It
is
hoped
that
this
provides
valuable
insights
guidances
novel
advancement
soft
matter
material
applications.
ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
15(42), С. 49701 - 49711
Опубликована: Окт. 17, 2023
Room-temperature
phosphorescent
(RTP)
liquid
crystal
materials
have
garnered
considerable
attention
because
of
their
significant
applications
in
organic
light
emitting
diodes,
polarized
materials,
and
so
forth.
How
to
efficiently
synthesize
pure
RTP
crystals
regulate
performance
is
great
significance.
In
this
article,
we
propose
a
simple
feasible
method
manipulate
properties
through
copolymerization.
We
constructed
copolymers
by
copolymerizing
monomer
bearing
biphenyl
mesogen
with
dibenzofuran
chromophore.
All
the
synthesized
show
property
introduction
mesogen.
Meanwhile,
changing
composition
copolymers,
it
possible
performance,
including
luminescence
color
lifetime.
As
content
PMDFM0C
component
increases,
phosphorescence
lifetime
gradually
increases.
For
poly(MDFM0C(0.46)-co-MBi18C(0.54)),
can
reach
463.0
ms.
Moreover,
changes
copolymer
composition,
which
induce
variable
room-temperature
phosphorescence.
addition,
when
oriented,
films
emit
linearly
fluorescence
The
dichroic
ratio
polarization
values
oriented
poly(MDFM0C(0.46)-co-MBi18C(0.54))
film
are
3.33
0.50,
respectively.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 16, 2024
Abstract
Organic
circularly
polarized
luminescence
(CPL)
plays
crucial
roles
in
chemistry
and
biology
for
the
potential
chiral
recognition,
asymmetric
catalysis,
3D
displays,
biological
probes.
The
long‐lived
luminescence,
large
Stokes
shift,
unique
chiroptical
properties
make
organic
room‐temperature
phosphorescence
(CPP)
a
new
research
hotspot
recent
years.
Nevertheless,
achieving
high‐performance
CPP
is
still
challenging
due
to
sensitivity
complexity
of
integrating
triplet
excitons
polarization
within
materials.
This
review
summarizes
latest
advances
CPP,
ranging
from
design
strategies
photophysical
underlying
mechanisms
applications.
Specifically,
generating
are
systemically
categorized
discussed
according
interactions
between
units
chromophores.
applications
light‐emitting
diodes,
sensing,
afterglow
information
encryption
also
illustrated.
In
addition,
we
present
current
challenges
perspectives
on
developing
CPP.
We
expect
this
provide
some
instructive
principles
fabricate
materials,
offering
an
in‐depth
understanding
mechanism
paving
way
toward
diverse
practical
Liquid
crystals
(LCs)
have
garnered
significant
attention
for
their
unique
optical
and
electrical
properties,
making
them
promising
candidates
in
various
technological
applications
such
as
smart
displays,
sensors,
telecommunications,
biomedicals
or
wearable
electronics.
In
this
study,
we
explore
the
potential
of
several
highly
emissive
benzothioxanthene
imide
(BTI)
derivatives
LC
materials
with
a
focus
on
robustness
temperature-stable
emission
behavior.
By
tailoring
molecular
structure
BTIs,
accomplished
exceptional
properties
while
maintaining
inherent
advantages
LCs,
self-organizing
ability
responsive
nature.
We
describe
formation
enantiotropic
liquid
whose
mesomorphic
dependent
nature,
length,
position
side
chain.
Moreover,
investigated
thermal
stability
spectra
over
wide
range
temperature,
highlighting
use
demanding
conditions
where
precise
performances
are
critical.
Our
findings
underscore
importance
design
achieving
enhanced
temperature
stability,
opening
new
avenues
BTI
derivatives.
Journal of Molecular Liquids,
Год журнала:
2024,
Номер
409, С. 125424 - 125424
Опубликована: Июль 6, 2024
Liquid
crystals
(LCs)
have
garnered
significant
attention
for
their
unique
optical
and
electrical
properties,
making
them
promising
candidates
in
various
technological
applications
such
as
smart
displays,
sensors,
telecommunications,
biomedicals
or
wearable
electronics.
In
this
study,
we
explore
the
potential
of
several
highly
emissive
benzothioxanthene
imide
(BTI)
derivatives
LC
materials
with
a
focus
on
robustness
temperature-stable
emission
behavior.
By
tailoring
molecular
structure
BTIs,
accomplished
exceptional
properties
while
maintaining
inherent
advantages
LCs,
self-organizing
ability
responsive
nature.
We
describe
formation
enantiotropic
liquid
whose
mesomorphic
dependent
nature,
length,
position
side
chain.
Moreover,
investigated
thermal
stability
spectra
over
wide
range
temperature,
highlighting
use
demanding
conditions
where
precise
performances
are
critical.
Our
findings
underscore
importance
design
achieving
enhanced
temperature
stability,
opening
new
avenues
BTI
derivatives.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(40)
Опубликована: Июль 11, 2024
Abstract
Circularly
polarized
long
afterglow
(CPLA)
attracts
great
interests
in
multi‐disciplinary
fields
with
significant
potentials
optical
multiplexing
applications,
but
achieving
full‐color
and
white
CPLA
is
still
challenging.
The
present
contribution
reports
the
first
success
utilizing
circularly
phosphorescence
energy
transfer
(CPP‐ET)
combined
chirality‐selective
absorption
(CSA)
to
construct
materials.
Blue
luminescence
dissymmetry
factor
(
g
lum
)
of
3×10
−2
firstly
obtained
via
CSA
effect
chiral
helical
polyacetylene
blue
ultralong
inorganic
phosphor
BP.
Significantly,
films
are
prepared
by
simply
blending
different
fluorophores
into
blue‐CPLA
CPP‐ET.
Benefited
from
persistent
BP,
lifetimes
increase
nanoseconds
minutes,
emissions
lasting
for
more
than
20
min
realized
10
−3
.
Also
noticeably,
optoelectronic
devices,
multi‐dimension
information
encryption
logic
gate
developed
based
on
tunable
CPLA‐active
established
strategy
provides
a
universal
platform
future
development
materials
applications.
