Circularly Polarized Organic Ultralong Room‐Temperature Phosphorescence: Generation, Enhancement, and Application
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 16, 2024
Abstract
Circularly
polarized
luminescent
(CPL)
materials
have
garnered
tremendous
attention
owing
to
their
expanded
optical
properties
beyond
emission
wavelength
and
intensity.
Among
these,
the
emerging
circularly
organic
ultralong
room‐temperature
phosphorescence
(CP‐OURTP)
materialsdemonstrating
elegant
distinct
features
are
of
significant
importance
for
extended
lifetime,
which
represent
a
novel
frontier
in
research
with
promising
scientific
technological
applications
across
diverse
fields.
This
review
systematically
outlines
traditional
strategies
achieve
CP‐OURTP
including
crystals,
copolymerization,
host–guest
doping,
combination
copolymerization
spinning
twisting
technology,
supramolecular
polymer
assembly.
Importantly,
recent
progress
chiral
soft
materials,
such
as
liquid
crystals
(LCs)
involving
lyotropic
LCs
(cellulose
nanocrystals,
CNCs)
thermotropic
(cholesteric
LC
elastomers),
is
showcased.
Finally,
practical
summarized,
concludes
perspectives
on
current
challenges
future
opportunities
materials.
aims
inspire
further
innovations
fabrication
advanced
enrich
applications.
Язык: Английский
Multi‐Stimuli‐Responsive Circularly Polarized Luminescence with Handedness Inversion and Near‐Infrared Phosphorescence in Chiral Metal‐Organic Framework Platform for White Light Emission and Information Encryption
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 17, 2025
Abstract
Preparing
multi‐color
and
multi‐stimuli‐responsive
circularly
polarized
luminescence
(CPL)
materials
understanding
the
evolution
of
chirality
through
visualized
mode
is
still
a
challenge.
Here,
an
encapsulation
engineering
approach
chiral
metal‐organic
frameworks
(MOFs)
proposed
to
confine
guest
emitters
realize
CPL.
Based
on
triplet‐triplet
energy
transfer
(TTET),
white
CPL
near‐infrared
room
temperature
phosphorescence
(NIR‐CPRTP)
can
be
obtained
by
introducing
pyrene
derivatives.
With
introduction
containing
vinylpyrene
group,
light‐
thermal‐responsive
with
signal
inversion
realized
reversible
[2+2]
cycloaddition
reaction
between
ligand
triggered
visible
light/ultraviolet
light
or
heating.
Furthermore,
excitation‐dependent
successfully
achieved
incorporation
excited
state
intramolecular
proton
(ESIPT)
molecules
into
nanopores.
Importantly,
magnification
greatly
enhanced
spatial
confinement,
accurate
host‐guest
single
crystal
structures
FLT@DCF‐12
FLT@LCF‐12
provide
understand
mechanism
transfer,
amplification
responsiveness.
White
LED
multiple
information
display
encryption
are
further
demonstrated.
This
breakthrough
provides
new
perspective
guest‐encapsulated
MOFs
contributes
construction
stimuli‐responsive
CPL‐active
materials.
Язык: Английский
Enhanced Photoactivated Circularly Polarized Afterglow with High Dissymmetry Factor and Tunable Emission
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 5, 2025
Abstract
Photoactivated
circularly
polarized
afterglow
(CPA)
exhibits
broad
application
prospects
in
various
optoelectronic
areas
due
to
its
multidimensional
emission
characteristics,
including
wavelengths,
lifetimes,
and
chirality.
Achieving
photoactivated
CPA
with
extremely
high
dissymmetry
factor
(
g
lum
)
values
is
highly
desired
but
considerably
challenging.
This
work
reports
a
bilayer
assembly
(R/S‐CLC‐TPB)
integrating
TPB@PMMA
thin
film
the
selective
reflection
of
cholesteric
liquid
crystals.
Initially,
R/S‐CLC‐TPB
no
emission,
while
following
1
min
UV
irradiation,
it
achieves
an
noticeable
long
lifetime
125
ms
value
up
1.6.
enhancement
can
be
attributed
oxygen
consumption
properties
under
subsequently
minimizing
loss
triplet
exciton.
Furthermore,
by
employing
triplet‐singlet
Förster
resonance
energy
transfer
(TS‐FRET)
strategy
from
organic
persistent
room‐temperature
phosphorescence
donor
fluorescent
dye
acceptor,
color
successfully
modulated
green
orange.
Ultimately,
these
materials
demonstrate
promising
capabilities
for
advanced
multi‐level
information
encryption
utilizing
their
tunable
color,
create
multiple
layers
that
selectively
accessed
decoded
based
on
photoactivation
chiroptical
properties.
Язык: Английский
Circularly Polarized Room-Temperature Phosphorescence from Marine Polysaccharide-Based Helical Assemblies
ACS Materials Letters,
Год журнала:
2025,
Номер
unknown, С. 1171 - 1178
Опубликована: Фев. 24, 2025
Язык: Английский
Improving Pure Organic Room‐Temperature Phosphorescence by Substituent Effect of Thianthrene
Chinese Journal of Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 17, 2025
Comprehensive
Summary
To
gain
insights
into
the
potential
of
thianthrene
(TA),
its
substituent
effects
were
systematically
studied
on
room‐temperature
phosphorescence
(RTP)
properties,
including
electron‐donating
and
electron‐withdrawing
substituents
at
1‐
2‐positions
TA,
respectively.
Both
theoretical
experimental
investigations
show
that
2‐position
greatly
enhance
RTP
performance
than
1‐position
substituents,
while
situation
is
exactly
opposite
for
substituents.
Compared
with
substitution,
induce
higher
radiation
rate
lower
non‐radiation
rate,
in
favor
enhancement
efficiency.
Furthermore,
introduction
phenylene
substitution
suppresses
non‐radiation,
resulting
simultaneously
improved
efficiency
elongated
lifetime.
Finally,
using
these
materials,
dynamically
reversible
operations
information
(write‐read‐erase)
are
realized,
as
well
encryption
time‐dependent
decryption
demonstration.
This
work
not
only
provides
a
better
understanding
structure–property
relationship
TA‐based
but
also
suggests
an
intramolecular
structural
modification
strategy
to
improve
pure
organic
materials.
Язык: Английский
Dual-Ring-Locking Strategy Enables Persistent Blue Room Temperature Phosphorescence in Benzo[b]phospholiums
Bo Yang,
Suqiong Yan,
Shirong Ban
и другие.
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 18, 2025
Commercial
phosphines
and
phosphoniums
were
commonly
reported
to
have
unstable
triplet
dissipation
because
of
the
flexible
C-P
pyramidal
geometry,
resulting
in
extremely
weak
or
no
phosphorescence.
To
boost
populations
stability
by
restricting
molecular
motion
rebuilding
electronic
structures,
we
that
dual-ring-locking
strategy
could
enable
elevated
intersystem
crossing
(ISC)
radiation
for
rigid
benzo[b]phospholium
configuration,
exhibiting
intense
persistent
room
temperature
phosphorescence
(RTP)
poly(vinyl
alcohol)
(PVA).
Among
them,
dual-ring-locked
[P1]+[Cl]-
showed
near-ultraviolet
fluorescence
maximized
at
400
nm
dichloromethane
blue
RTP
emission
453
(Φphos
≈
12.4%,
τphos
>
1200
ms)
PVA
matrix.
In
contrast,
[P2]+[Cl]-
possessed
a
single
ring-locked
nucleus
had
red-shifted
<
1.8%,
=
74.2
ms).
Time-dependent
density
functional
theory
(TD-DFT)
disclosed
improved
spin-flipping
benefited
from
integrated
π-π*/n-π*
transition,
rational
split
energy,
excited
states.
The
impressive
OU-RTP
duration
function
as
an
afterglow
pattern
optical
encryption
emitting
layer
light-emitting
diode
(LED)
applications.
Язык: Английский