Advanced Optical Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 13, 2024
Abstract
Chiral
plasmonic
nanoantennas
exhibit
unique
chiroptical
properties
in
both
the
near‐field
and
far‐field,
offering
exciting
opportunities
for
applications
sensing,
circularly
polarized
luminescence,
quantum
communication.
Recent
advances
chiral
plasmonics
have
facilitated
creation
of
nanoparticles
with
intrinsic
chirality
at
single‐particle
level.
However,
far‐field
directionality
these
is
not
well
understood.
In
this
work,
A
numerical
study
conducted
on
a
single
nanoantenna
that
undergoes
size‐preserving
compression,
transitioning
from
straight
nanorod
to
left‐
or
right‐handed
helices
varying
pitches.
These
nanostructures
showcase
distinct
mode‐dependent
properties,
encompassing
positive
negative
dissymmetry
factors,
3D
power
radiation
patterns,
angular
distribution
circular
polarization,
under
plane‐wave
point‐source
excitations.
The
findings
provide
new
insights
into
angle‐resolved
spectroscopies
intrinsically
controlling
light
emission
nanophotonics.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(15), С. 10640 - 10654
Опубликована: Апрель 3, 2024
Foreign
ions
as
additives
are
of
great
significance
for
realizing
excellent
control
over
the
morphology
noble
metal
nanostructures
in
state-of-the-art
seed-mediated
growth
method;
however,
they
remain
largely
unexplored
chiral
synthesis.
Here,
we
report
on
a
Cu2+-dominated
strategy
that
can
direct
concave
Au
nanoparticles
with
C3-dominant
centers.
The
introduction
trace
amounts
Cu2+
process
is
found
to
dominate
chirality
transfer
from
molecules
nanoparticles,
leading
formation
VC
geometry.
Both
experimental
and
theoretical
results
further
demonstrate
correlation
between
nanoparticle
structure
optical
nanoparticle.
ion
by
selectively
activating
deposition
atoms
along
[110]
[111]
directions,
facilitating
VC.
We
be
employed
generate
variety
enriched
geometric
desired
chiroptical
properties.
Concave
also
exhibit
appealing
catalytic
activity
selectivity
toward
electrocatalytic
oxidation
enantiomers
comparison
helicoidal
nanoparticles.
ability
tune
controlled
manner
simply
manipulating
opens
up
promising
creating
nanomaterials
increasing
architectural
diversity
chirality-dependent
applications.
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Фев. 15, 2025
Abstract
Organic
light-emitting
diodes
(OLEDs)
supporting
the
direct
emission
of
circularly
polarized
(CP)
light
are
essential
for
numerous
technologies.
The
realization
CP-OLEDs
with
large
dissymmetry
(
g
EL
)
factors
and
high
external
quantum
efficiencies
(EQEs)
has
been
accepted
as
a
considerable
challenge.
Here
we
demonstrate
efficient
based
on
assembly
chiral
plasmonic
nanoparticles
(NPs)
supramolecular
aggregates.
NPs
serve
scaffold
optical
nanoantenna
to
modulate
absorption
chromophores.
We
employ
different
construct
various
dominated
by
excitons
or
plasmons.
CP-OLED
showing
EQE
2.5%
factor
0.31
is
achieved,
result
multiscale
chirality
transfer,
enhancement,
suppression
overshoot
effect.
proposed
schemes
compatible
current
manufacturing
technology
OLEDs.
This
work
demonstrates
that
can
be
promising
candidates
in
photoelectric
devices.
Journal of Materials Chemistry C,
Год журнала:
2024,
Номер
12(25), С. 9139 - 9145
Опубликована: Янв. 1, 2024
The
advanced
synthetic
methodologies
for
discrete
chiral
Au
nanorods
promote
understanding
the
effect
of
structure
parameters,
intrinsic
chirality
and
extrinsic
on
plasmonic
couplings.
Abstract
Integrating
the
plasmonic
chirality
with
excellent
catalytic
activities
in
hybrid
nanostructures
provides
a
promising
strategy
to
realize
chiral
nanocatalysis
toward
many
chemical
reactions.
However,
controllable
synthesis
of
catalytically
active
nanoparticles
tailored
geometries
and
compositions
remains
significant
challenge.
Here
it
is
demonstrated
that
Au–Pd
alloy
nanorods
tunable
optical
surfaces
can
be
achieved
by
seed‐mediated
coreduction
growth
method.
Through
manipulating
inducers,
Au
selectively
transform
into
two
different
intrinsically
distinct
geometric
chirality.
By
further
adjusting
several
key
synthetic
parameters,
chirality,
composition,
geometry
are
fine‐tailored.
More
importantly,
exhibit
appealing
as
well
polarization‐dependent
plasmon‐enhanced
nanozyme
activity,
which
has
great
potential
for
plasmon‐induced
photochemistry.
Nano Letters,
Год журнала:
2024,
Номер
24(37), С. 11706 - 11713
Опубликована: Сен. 4, 2024
Bichiral
plasmonic
nanoparticles
exhibited
intriguing
geometry-dependent
circular
dichroism
(CD)
reversal;
however,
the
crucial
factor
that
dominates
CD
is
still
unclear.
Combined
with
spectroscopy
and
theoretical
multipole
analysis,
we
demonstrate
originates
from
excitation
of
electric
quadrupolar
plasmons.
Moreover,
a
comparative
study
two
distinct
modes
reveals
correlation
between
sign
local
geometric
handedness
at
hotspots,
thereby
establishing
structure-property
relationship
in
bichiral
nanoparticles.
The
reverse
attributed
to
opposite
directions
wavelength
shift
plasmon
upon
changing
particle
geometry.
By
finely
tuning
size
nanoparticles,
can
further
reveal
dependence
on
Our
work
sheds
light
physical
origin
provides
important
guidelines
for
design
chiral
toward
chirality-dependent
applications.
Laser & Photonics Review,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 4, 2025
Abstract
The
Plasmon‐exciton
strong
coupling
systems
have
attracted
growing
interests
due
to
their
powerful
ability
in
manipulating
the
atomic
energy
levels,
generating
coherent
quantum
eigenstates,
and
offering
promising
applications
communications,
catalysis
beyond.
Chirality
divides
plasmon
into
two
intriguing
states
that
enable
lots
of
new
physical
effects
applications.
However,
between
chiral
excitons
remains
largely
unexplored.
This
study
demonstrates
room‐temperature
from
one
plasmon‐exciton
system
composed
J‐aggregates
nominally‐achiral
gold
nanocubes
(AuNCs).
Through
establishing
single‐particle
polarization
scattering
measurement
system,
this
work
observes
distinct
Rabi
splitting
anti‐crossing
behavior
both
g‐factor
spectra,
which
are
verified
by
numerical
simulations
with
half‐hollow
Gaussian
beam
excitations.
in‐depth
multi‐dipole
theory
analysis
further
reveals
im‐perfect
geometry
AuNCs
induces
crossed
in‐plane
dipoles
superposition
results
chiroptical
effect,
while
strong‐coupling
changes
dipole
strength
phase,
leads
a
Rabi‐like
spectra.
Furthermore,
develops
quasi‐static
multipole
better
understand
plexcitonic
behavior.
These
findings
provide
deeper
insights
optical
chirality,
will
advance
development
next‐generation
devices.
Nano Letters,
Год журнала:
2024,
Номер
24(24), С. 7443 - 7450
Опубликована: Июнь 5, 2024
Light–matter
strong
coupling
(LMSC)
is
an
intriguing
state
in
which
light
and
matter
are
hybridized
inside
a
cavity.
It
increasingly
recognized
as
excellent
way
to
control
material
properties
without
any
chemical
modification.
Here,
we
show
that
the
LMSC
powerful
for
manipulating
chiral
nonlinear
optical
(NLO)
effects
through
investigation
of
second
harmonic
generation
(SHG)
circular
dichroism.
At
upper
polariton
band
LMSC,
addition
enhancement
SHG
by
more
than
1
order
magnitude,
responsivity
handedness
circularly
polarized
was
largely
modified,
where
sign
inversion
increase
dissymmetry
factor
were
achieved.
Quarter
waveplate
rotation
analysis
revealed
clearly
influenced
coefficients
associated
with
chirality
NLO
process
also
contributed
magnetic
dipole
interactions.
This
study
demonstrated
serves
great
platform
controlling
magneto-optics.
