Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 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
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(14)
Published: Feb. 4, 2024
Abstract
Polyethylene
glycol
chains
in
two
terminals
of
the
naphthalene
functional
group
are
threaded
into
α‐cyclodextrin
cavities
to
form
pseudopolyrotaxane
(NPR),
which
not
only
effectively
induces
phosphorescence
by
cyclodextrin
macrocycle
confinement,
but
also
provides
interfacial
hydrogen
bonding
assembly
function
between
polyhydroxy
groups
and
waterborne
polyurethane
(WPU)
construct
elastomers.
The
introduction
NPR
endows
elastomer
with
enhanced
mechanical
properties
excellent
room
temperature
phosphorescent
(RTP)
emission
(phosphorescence
remains
water,
acid,
alkali,
organic
solvents,
even
at
160
°C
high
temperatures).
Especially,
reversible
mechanically
responsive
behavior
intensity
increased
three
times
under
200%
strain)
can
be
observed
stretch
recover
process,
owing
strain‐induced
microstructural
changes
further
inhibiting
non‐radiative
transition
vibration
NPR.
Therefore,
changing
supramolecular
elastomers
through
stretching
a
new
approach
for
luminescent
materials.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 17, 2024
Abstract
Circularly
polarized
room‐temperature
phosphorescence
(CPRTP)
simultaneously
featuring
multiple
colors
and
extremely
high
dissymmetry
factor
(
g
lum
)
is
crucial
for
increasing
the
complexity
of
optical
characteristics
advancing
further
development,
but
such
a
type
CPRTP
still
unprecedented.
The
present
work
develops
an
effective
universal
strategy
to
achieve
full‐color
with
ultra‐high
factors
in
polymeric
cholesteric
superhelix
network,
which
constructed
by
liquid
crystal
polymer
chiral
helical
(CHP).
Taking
advantage
twisting
power
CHP,
resulting
network
exhibits
remarkable
activity.
Significantly,
adopting
simple
double‐layered
architectures
consisting
film
phosphorescent
films,
blue‐,
green‐,
yellow‐,
red‐CPRTP
emissions
are
successfully
obtained,
maximum
|
values
up
1.43,
1.39,
1.09
0.84,
respectively.
Further,
multilevel
information
encryption
application
demonstrated
based
on
multidimensional
architectures.
This
study
offers
new
insights
into
fabricating
considerable
performance
advanced
photonic
applications.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 11, 2024
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
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 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.
Advanced Optical Materials,
Journal Year:
2023,
Volume and Issue:
12(9)
Published: Nov. 16, 2023
Circularly
polarized
luminescent
(CPL)
materials
have
significant
promising
applications
in
organic
light-emitting
diodes,
asymmetric
synthesis,
and
other
fields.
However,
due
to
the
instability
of
triplet-state
excitons,
how
achieve
an
effective
combination
CPL
with
room-temperature
phosphorescence
(RTP)
remains
a
formidable
challenge.
Here,
simple
feasible
method
for
constructing
polymer-based
CPRTP
is
proposed
by
preparing
chiral
phosphorescent
liquid
crystals
through
copolymerization.
A
series
RTP
crystal
copolymers
are
successfully
synthesized
copolymerizing
monomer
bearing
cholesterol
mesogen
dibenzofuran
chromophore.
Due
introduction
mesogen,
can
form
smectic
C-phase
crystals.
Utilizing
their
selective
reflection
characteristic,
efficient
achieved,
glum
value
up
−1.6
×
10−2.
In
addition,
both
components
exhibit
properties
show
differences
color
lifetime.
By
changing
composition
copolymers,
regulation
achieved.
As
result,
multicolor-tunable
time-dependent
prepared.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(6), P. 6681 - 6690
Published: March 5, 2024
Long-lived
thermally
activated
delayed
fluorescence
(TADF)
emission
has
gained
extensive
attention
due
to
its
potential
application
in
information
encryption,
illumination,
and
bioimaging.
However,
developing
visible
light-excited
TADF
materials
is
still
a
significant
challenge.
Herein,
light
triggered
was
achieved
by
embedding
chlorine
doped
carbon
dots
(Cl-CDs)
into
g-C3N4
nanosheet
matrix
through
simple
microwave
treatment.
The
strong
electron-withdrawing
effect
of
the
dropping
redshifts
excitation
wavelength,
covalent
bonds
between
Cl-CDs
significantly
stabilize
triplet
state.
Green
with
peak
at
520
nm
could
be
obtained
Cl-CD
composite
when
excited
UV
light,
afterglow
signal
can
observed
naked
eye
for
up
5
s
after
mobile
phone
flashlight
irradiation.
also
exhibited
temperature-responsive
color
stability
under
Consequently,
successfully
employed
concepts
encryption
single-component
time
delay
WLED
development.
This
research
provides
strategies
that
may
motivate
applied
advanced
illumination
areas.
Crystal Growth & Design,
Journal Year:
2024,
Volume and Issue:
24(11), P. 4819 - 4824
Published: May 24, 2024
Achieving
circularly
polarized
luminescence
(CPL)
with
room-temperature
phosphorescence
(RTP)
is
a
significant
but
challenging
issue.
Here,
simple
method
for
preparing
phosphorescent
(CPP)
materials
adopted
through
the
chiral
coordination
assembly.
One
enantiomeric
pair
of
polymers
(DCF-13
and
LCF-13)
synthesized
by
introducing
linker.
DCF-13
LCF-13
RTP
lifetimes
132.45
137.36
ms
can
emit
CPP
glum
values
−5.0
×
10–3
+5.0
at
450
nm.
This
work
provides
perspective
constructing
materials.
Advanced Optical Materials,
Journal Year:
2023,
Volume and Issue:
12(13)
Published: Dec. 3, 2023
Abstract
The
development
of
organic
circularly
polarized
room
temperature
phosphorescence
(CP‐RTP)
materials
with
tunable
emission
colors
has
important
value
in
the
field
optoelectronic
applications
but
remains
a
challenging
issue.
Herein,
CP‐RTP
doped
system
green,
yellow,
and
red
afterglow
is
constructed
by
introducing
chiral
groups
into
three
phosphors
naphthalene,
phenanthrene,
pyrene
as
guests
respectively,
using
polyvinyl
pyrrolidone
(PVP)
host.
quantum
yield
7.3%–13.6%,
lifetime
341
ms–1017
ms,
asymmetry
factor
0.001–0.0021.
Further
doping
simultaneously
PVP
resulted
four‐component
materials.
Benefiting
from
different
excitation
wavelengths
guests,
when
wavelength
changes
300
to
365
nm,
green
yellow
finally
red.
Moreover,
due
lifetimes
can
turn
change
after
at
demonstrating
time‐dependence
property.
This
strategy
provides
an
effective
platform
for
constructing
multicolor
