Polymeric Cholesteric Superhelix Induced by Chiral Helical Polymer for Achieving Full‐Color Circularly Polarized Room‐Temperature Phosphorescence with Ultra‐High Dissymmetry Factor
Small,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 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.
Язык: Английский
A stereodynamic probe of Pt(II) molecular hinge for chiroptical sensing of cryptochiral compounds
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Фев. 25, 2025
Cryptochiral
compounds
are
indispensable
in
biology
systems
and
medical
applications,
yet
the
development
of
high-performance
detection
method
remains
challenging.
Here,
we
report
a
hinge-like
dinuclear
Pt(II)
complex
as
stereodynamic
probe
for
cryptochirality
sensing.
This
features
constrained,
closed
conformation
achieved
through
synergistic
intramolecular
π
−
stacking
metal-metal
interactions
between
cyclometalated
wings.
The
shows
robust
chiroptical
response
to
center-to-axial
chiral
induction
during
rapid
condensation
with
cryptochiral
that
adopts
more
energetically
favorable
conformation.
resulting
intense
Cotton
effects
at
long
wavelengths
enable
in-situ
circular
dichroism
analysis
determinate
absolute
configuration
enantiometric
composition
molecules.
Furthermore,
near-infrared
phosphorescence
characteristics
hinge
have
been
explored
develop
it
an
optical
sensor
accurate
quantification
With
its
dual
CD
capabilities,
this
great
potential
high-throughput
screening
analysis.
authors
complexes
probes
Язык: Английский
Nonaromatic Lysine Supramolecular Nanotube Assemblies with Excitation-Dependent Circularly Polarized Phosphorescence
ACS Materials Letters,
Год журнала:
2024,
Номер
6(8), С. 3487 - 3495
Опубликована: Июль 5, 2024
Nonaromatic
phosphorescence
has
burgeoned
into
a
new
frontier
of
luminescent
materials.
Herein,
nonaromatic
chiral
lysine
amphiphiles
with
long
alkyl
chains
connected
via
urea
or
amide
bonds
are
designed,
and
their
self-assembly
as
well
chiroptical
properties
investigated.
The
C18
derivative
bond
self-assembles
nanotube
shows
an
excitation-dependent
(ExD)
circularly
polarized
(CPP).
Under
varied
excitations,
the
CPP
can
be
tuned
from
violet
to
blue,
lifetime
up
32.0
ms,
quantum
yield
63.0%,
dissymmetry
factor
5.4
×
10–3.
In
comparison,
bonded
microfiber
showing
conventional
CPP.
It
is
suggested
that
multiple
noncovalent
clustering
amphiphilic
molecules
responsible
for
Moreover,
when
fluorescent
dyes
doped,
luminescence
longer
obtained.
work
demonstrates
self-assembled
gel
materials
show
ExD-CPP,
which
opens
scope
Язык: Английский
Generation, Inversion, and Amplification of Intrinsic Circularly Polarized Room Temperature Phosphorescence in Chiral Carbon Dots
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 20, 2024
Abstract
Chiral
carbon
dots
(C‐dots)
with
circularly
polarized
luminescence
emission
have
attracted
tremendous
attention,
but
achieving
room
temperature
phosphorescence
(CPRTP)
C‐dots
is
still
challenging.
The
present
contribution
reports
the
success
in
constructing
intrinsic
CPRTP
property
through
an
eco‐friendly
solvent‐free
pyrolysis
method
using
urea
and
(R/S)‐1,1′‐binaphthyl‐2,2′‐diamine
as
precursors.
obtained
exhibit
fluorescence
(CPF)
dual
dissymmetric
factors
of
10
−3
,
accompanied
by
long
lifetime
up
to
400
ms.
Detailed
experimental
characterizations
theoretical
calculations
show
that
presence
carbonyl
groups
nitrogen
atoms
well
charge
transfer
excitation
within
crucial
for
RTP
emission.
More
importantly,
upon
incorporation
achiral
helical
polyacetylene,
chirality
from
nanoscale
chains
effectively
occurs
during
film
formation
process,
resulting
amplified
chiroptical
performance.
Significantly,
based
on
synergistic
interaction
“circularly
excitation”
“re‐polarization”
mechanisms,
inversion
amplification
CPF/CPRTP
emissions
large
2.0
×
−2
/2.2
are
observed
C‐dots/polyacetylene
composite
films.
This
work
provides
a
platform
construction
novel
materials
significant
potentials.
Язык: Английский
Reversible Circularly Polarized Luminescence Inversion and Emission Color Switching in Photo-Modulated Supramolecular Polymer for Multi-Modal Information Encryption
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 28, 2024
Constructing
circularly
polarized
luminescence
(CPL)
materials
that
exhibit
dynamic
handedness
inversion
and
emissive
color
modulation
for
multimodal
information
encryption
presents
both
a
significant
challenge
compelling
opportunity.
Here,
we
have
developed
pyridinethiazole
acrylonitrile-cholesterol
derivative
(Z-PTC)
exhibits
wavelength-dependent
photoisomerization
photocyclization,
enabling
in
supramolecular
assemblies
with
decent
CPL
activity.
Coordination
Ag
Язык: Английский
Interplay of Circularly Polarized Light with Molecular and Structural Chirality: Chiral Lanthanide Complexes and Cellulose Nanocrystals
Advanced Optical Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 17, 2024
Abstract
The
interaction
of
circularly
polarized
(CP)
light
with
chiral
matter
at
different
scales
opens
several
possibilities
manipulation
in
photonic
and
electronic
devices.
Here
it
is
shown
that
a
multilayer
architecture,
possible
to
take
advantage
the
polarization‐selective
reflection
nematic
arrangement
cellulose
nanocrystals
strong
intrinsic
CP
luminescence
(CPL)
various
bands
Eu
complexes.
In
this
way,
both
CPL
total
emission
complex
are
modified
depending
on
enantiomer
applied
detection
geometry.
This
concept
may
apply
for
polarization
control
devices
optical
cavities.
Язык: Английский
Energy Transfer for Constructing Circularly Polarized Luminescence Materials: Recent Progress and Future Prospects
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 14, 2024
Abstract
Circularly
polarized
luminescence
(CPL)
materials
hold
significant
promise
in
multidisciplinary
fields
such
as
circularly
organic
light‐emitting
diodes,
biological
probes,
data
storage,
and
information
encryption.
However,
these
cutting‐edge
applications
also
put
forward
higher
requirements
for
the
design
of
CPL
materials,
requiring
large
dissymmetry
factor
high
emission
quality.
For
this
purpose,
diverse
approaches
have
been
explored
to
generate
enhance
emission.
Among
them,
energy
transfer
(ET)
strategy
stands
out
it
can
be
readily
implemented
a
wide
range
materials.
The
present
work
overviews
latest
advances
generating
modulating
CPL,
involving
small
molecules,
polymers,
metal
complexes,
liquid
crystals,
well
new‐emerging
chiral
luminescent
It
is
anticipated
that
review
article
will
garner
increased
attention
toward
systems
facilitate
advancement
Язык: Английский