Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
35(3)
Published: Sept. 20, 2024
Abstract
Chiral
metallacages,
with
their
precisely
distributed
luminescent
and
chiral
units
inherent
adaptive
chirality,
represent
an
ideal
framework
for
developing
circularly
polarized
luminescence
(CPL)‐active
materials.
Despite
potential,
enhancing
the
dissymmetry
factor
(
g
lum
)
of
metallacage‐based
materials
remains
a
significant
challenge.
In
this
study,
useful
approach
is
proposed
by
co‐assembling
donor
metallacage
Δ
4
/
Λ
‐Zn
A
achiral
acceptor
Nile
red
(NiR),
achieving
efficient
energy
chirality
transfer
resulting
in
enhanced
CPL
these
co‐assemblies.
More
importantly,
microfluidic
laminar
flow
utilized,
known
providing
stable
driving
forces
confined
spaces,
to
achieve
marked
improvement
values
co‐assemblies
within
polymethyl
methacrylate
(PMMA)
films.
Computational
fluid
dynamics
(CFD)
simulations
small‐angle
X‐ray
scattering
(SAXS)
experiments
confirm
that
films
containing
/NiR,
prepared
via
chips,
display
well‐defined
distributions
metallacages
NiR
due
controllable
assembly
process
facilitated
flow.
This
work
pioneers
new
methodology
significantly
enhance
materials,
opening
avenues
field
photonics.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 7, 2024
Abstract
Multimodal
upconversion
and
downshifting
circularly
polarized
luminescent
materials
hold
significant
potential
for
optical
anticounterfeiting
applications
due
to
their
exceptional
chiroptical
properties.
However,
constructing
these
within
a
single
emitter
remains
challenging.
In
this
study,
conceptual
model
of
multimodal
upconversion/downshifting
luminescence
(CPL)
is
realized
nanoparticle.
A
new
type
nanoparticles
with
multilayer
core–shell
architecture
fabricated,
capable
delivering
luminescence,
when
excited
by
980
nm
laser.
Utilizing
co‐assembly
strategy,
CPL
emission,
covering
broad
emission
range
from
ultraviolet
(UV)
the
second
near‐infrared
(NIR‐II)
region,
can
be
at
supramolecular
level.
These
properties
closely
follow
chirality
host
matrix
are
strongly
dependent
on
distribution
mode
films.
The
behavior
enabled
cutting‐edge
encryption
including
information
encryption.
This
work
introduces
novel
approach
designing
opens
avenues
development
functional
materials.
Chemistry - A European Journal,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
Circularly
polarized
luminescence
(CPL)
has
attracted
tremendous
attention
because
of
its
significant
application
prospect
across
multiple
fields
three-dimensional
display,
data
storage,
and
information
encryption.
Chirality
are
two
necessary
prerequisites
for
the
generation
CPL.
However,
controlling
these
factors
simultaneously
in
a
rational
manner
remains
challenge.
Herein,
we
highlight
recent
advances
on
regulation
CPL
through
new
concept,
named
matching
rules,
mainly
including
fluorescence-selective
absorption,
circularly
fluorescence
energy
transfer,
chiral
communication
between
excited
state
ground
state.
An
important
commonality
among
strategies
is
that
they
need
good
overlap
corresponding
spectra
luminescent
part
(fluorescence,
phosphorescence,
or
CPL)
(organic,
inorganic,
organic-inorganic
hybrid
materials),
which
can
be
contactless
separate.
Different
from
most
previous
studies,
no
covalent
noncovalent
interactions
parts
required,
makes
them
more
facile
convenient.
Finally,
summarize
main
advantages
current
challenges.
We
expect
this
concept
to
offer
insightful
novel
understanding
inspiration
regulation.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
Abstract
Circularly
polarized
light
(CPL)
is
inherently
chiral
and
regarded
as
one
possible
source
for
the
origin
of
homochirality.
Coincidentally,
metal
nanoparticles
have
great
prospects
in
asymmetric
photochemical
reactions
since
they
can
enhance
light‐matter
interactions.
Nonetheless,
little
known
about
how
spin
angular
momentum
competes
with
electromagnetic
field
vicinity
a
nanoparticle
during
induction
amplification
process.
Here,
an
photo‐polymerization
system
presented
where
bias
be
selectively
regulated
by
combination
fields
CPL
Ag
nanoparticles,
either
constructively
or
destructively.
Synergistic
effect
observed
when
handedness
both
are
matched,
while
opposite‐handed
overrule
polymer
helicity
chain
propagation
process
near‐field
weak.
There
bifurcation
point
orthogonal
control
process,
favoring
programmable
chiroptical
micropatterns
multi‐channel
independent
information
encoding.
This
work
not
only
highlights
opportunities
regulating
photopolymerization
but
also
highly
valuable
fundamental
understanding
symmetry
breaking
reactions.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
35(3)
Published: Sept. 20, 2024
Abstract
Chiral
metallacages,
with
their
precisely
distributed
luminescent
and
chiral
units
inherent
adaptive
chirality,
represent
an
ideal
framework
for
developing
circularly
polarized
luminescence
(CPL)‐active
materials.
Despite
potential,
enhancing
the
dissymmetry
factor
(
g
lum
)
of
metallacage‐based
materials
remains
a
significant
challenge.
In
this
study,
useful
approach
is
proposed
by
co‐assembling
donor
metallacage
Δ
4
/
Λ
‐Zn
A
achiral
acceptor
Nile
red
(NiR),
achieving
efficient
energy
chirality
transfer
resulting
in
enhanced
CPL
these
co‐assemblies.
More
importantly,
microfluidic
laminar
flow
utilized,
known
providing
stable
driving
forces
confined
spaces,
to
achieve
marked
improvement
values
co‐assemblies
within
polymethyl
methacrylate
(PMMA)
films.
Computational
fluid
dynamics
(CFD)
simulations
small‐angle
X‐ray
scattering
(SAXS)
experiments
confirm
that
films
containing
/NiR,
prepared
via
chips,
display
well‐defined
distributions
metallacages
NiR
due
controllable
assembly
process
facilitated
flow.
This
work
pioneers
new
methodology
significantly
enhance
materials,
opening
avenues
field
photonics.
