Biosensors,
Journal Year:
2022,
Volume and Issue:
12(11), P. 957 - 957
Published: Nov. 1, 2022
As
chiral
antennas,
plasmonic
nanoparticles
(NPs)
can
enhance
responses
of
materials
by
forming
hybrid
structures
and
improving
their
own
chirality
preference
as
well.
Chirality-dependent
properties
NPs
broaden
application
potentials
nanostructures
in
the
biomedical
field.
Herein,
we
review
wet-chemical
synthesis
self-assembly
fabrication
gold-NP-based
nanostructures.
Discrete
are
mainly
obtained
via
seed-mediated
growth
achiral
gold
under
guide
molecules
during
growth.
Irradiation
with
light
is
demonstrated
to
be
a
promising
method
for
control.
Chiral
assemblies
fabricated
bottom-up
assembly
using
linkers
or
guided
templates,
which
exhibit
large
chiroplasmonic
activities.
In
describing
recent
advances,
emphasis
placed
on
design
tuning
amplification
circular
dichroism
responses.
addition,
discusses
most
even
emerging
trends
fields
from
biosensing
imaging
disease
diagnosis
therapy.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(23)
Published: April 1, 2024
Abstract
Chiral
nanomaterials
with
unique
chiral
configurations
and
biocompatible
ligands
have
been
booming
over
the
past
decade
for
their
interesting
chiroptical
effect,
catalytical
activity,
related
bioapplications.
The
catalytic
activity
selectivity
of
emerged
as
important
topics,
that
can
be
potentially
controlled
optimized
by
rational
biochemical
design
nanomaterials.
In
this
review,
synthesis,
composition,
performances
different
biohybrid
are
discussed.
construction
multiscale
geometries
along
underlying
principles
enhancing
responses
highlighted.
Various
approaches
to
regulate
biocatalysis
also
summarized.
Furthermore,
attention
is
paid
specific
ligands,
materials
compositions,
structure
characteristics,
so
on
introducing
selective
activities
representative
nanomaterials,
emphasis
substrates
including
small
molecules,
biological
macromolecule,
in‐site
catalysis
in
living
systems.
Promising
progress
has
emphasized
featuring
structural
versatility
improved
gave
rise
unprecedented
chances
utilize
light
biocatalytic
applications.
summary,
challenges,
future
trends,
prospects
associated
comprehensively
proposed.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(47)
Published: Oct. 9, 2024
Abstract
The
controlled
growth
of
gold
nanostructures
with
complex
shapes
and
reduced
symmetry,
exemplified
by
chiral
nanorods
nanoparticles,
is
one
the
most
dynamic
fields
nanochemistry.
A
timely
summary
underlying
concepts,
including
mechanisms
redefined
chirality
measures,
would
further
promote
this
research
area.
In
perspective,
we
aim
to
establish
qualitative
connections
between
conditions,
specifically
for
seed‐mediated
synthesis
as
a
convenient
case
morphogenesis.
crystallographic
morphological
features
achiral
used
seeds,
experimental
conditions
during
growth,
symmetry
inducers,
can
all
be
exploited
obtain
intricate
shapes.
Chirality
characterization
(such
electron
tomography
techniques)
quantification
(including
measures)
emerge
critical
aspects
comprehensively
explore
understand
such
structures,
enabling
optimization
their
geometric
optical
features.
We
conclude
discussing
relevant
challenges
addressed
toward
better
plasmonic
nanostructures.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 9, 2025
Chiral
plasmonic
nanomaterials
with
fascinating
physical
and
chemical
properties
show
emerging
chirality-dependent
applications
in
photonics,
catalysis,
sensing.
The
capability
to
precisely
manipulate
the
chirality
a
broad
spectral
range
plays
crucial
role
enabling
of
chiral
diverse
complex
scenarios;
however,
it
remains
challenge
yet
be
addressed.
Here
we
demonstrate
strategy
significantly
enhance
tunability
circular
dichroism
(CD)
spectra
by
constructing
core-shell
hybrid
metal-semiconductor
structures
tailored
shells.
In
typical
case,
Au@Cu
Advanced Optical Materials,
Journal Year:
2023,
Volume and Issue:
11(18)
Published: April 23, 2023
Abstract
It
is
shown
that
the
chiral
ligand
glutathione
can
induce
active
surface
growth
in
deposition
of
Au
on
nanoplates,
forming
nano‐badges
with
complex
patterns.
The
special
feature
mode
materials
are
diverted
to
a
few
sites,
causing
deep
valleys
and
high
standing
walls.
circular
dichroism
signal
depends
tilting
degree
walls,
which
likely
arises
from
different
packing
ligands
two
pro‐chiral
slopes.
As
characteristic
sign
Active
Surface
Growth
mode,
low
seed
concentration
used
promote
rate
deposition,
expands
ridge–valley
competition
favoring
at
sites.
understanding
rational
control
ridges
will
advance
synthetic
for
nanostructures.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(51)
Published: Aug. 2, 2023
Metal
helicoid
nanoparticles
with
intrinsic
3D
chiral
structures
have
emerged
as
a
new
class
of
plasmonic
metamaterials
outstanding
chiroplasmonic
properties.
Despite
the
considerable
potential
metal
in
sensing,
their
sensing
capabilities
remain
elusive,
stressing
need
for
rational
chirality
engineering
nanoparticles.
In
this
report,
Au@Pd
engineered
properties
and
integrated
hydrogen
are
rationally
synthesized.
As
metamaterials,
exhibit
unprecedented
sensitivity
visible
range.
A
significant
circular
dichroism
red-shift
large
206.1
nm
can
be
achieved
when
they
exposed
to
hydrogen.
Such
high
outperforms
all
sensors
Besides
sensitivity,
platform
shows
good
linear
range
1.5-6.0%
concentration
higher
figure
merit,
excellent
selectivity,
reusability.
To
further
demonstrate
its
applicability,
is
utilized
investigate
absorption
desorption
kinetics
on
Pd.
This
study
heralds
paradigm
highlights
tremendous
utilizing
by
engineering.
Nano Letters,
Journal Year:
2023,
Volume and Issue:
23(17), P. 8233 - 8240
Published: Aug. 17, 2023
Surface
roughness
in
chiral
plasmonic
nanostructures
generates
asymmetrical
localized
electromagnetic
fields,
which
hold
great
promise
for
applications
recognition,
chiroptical
spectroscopic
sensing,
and
enantioselective
photocatalysis.
In
this
study,
we
develop
a
surface
topographical
engineering
approach
to
precisely
manipulate
the
structures
of
Au
nanocrystals.
Through
carefully
controlling
amounts
l-
or
d-cystine
(Cys)
seed
solution
growth
process,
successfully
synthesize
nanocrystals
with
highly
disordered,
ordered,
less
ordered
wrinkled
surfaces.
An
underlying
principle
governing
relationship
between
roughness,
orderliness,
response
is
also
proposed.
More
importantly,
wrinkles
on
surfaces
generate
electronic
fields
enhanced
intensity,
achieve
excellent
plasmon-enhanced
discrimination
ability
penicillamine
(Pen)
enantiomers.
This
work
offers
exciting
prospects
manipulating
designing
sensitive
sensors
hot
spots.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(18), P. 12010 - 12019
Published: April 26, 2024
Chirality
in
gold
nanostructures
offers
an
exciting
opportunity
to
tune
their
differential
optical
response
left-
and
right-handed
circularly
polarized
light,
as
well
interactions
with
biomolecules
living
matter.
However,
tuning
understanding
such
demands
quantification
of
the
structural
features
that
are
responsible
for
chiral
behavior.
Electron
tomography
(ET)
enables
characterization
at
single-particle
level
has
been
used
quantify
helicity
complex
nanorods.
technique
is
time-consuming
consequently
lacks
statistical
value.
To
address
this
issue,
we
introduce
herein
a
high-throughput
methodology
combines
images
acquired
by
secondary
electron-based
electron
beam-induced
current
(SEEBIC)
quantitative
image
analysis.
As
result,
geometric
chirality
hundreds
nanoparticles
can
be
quantified
less
than
1
h.
When
combining
drastic
gain
data
collection
efficiency
SEEBIC
limited
number
ET
sets,
better
how
structure
individual
translates
into
ensemble
chiroptical
reached.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Oct. 25, 2024
Helicoid
plasmonic
nanoparticles
with
intrinsic
chirality
are
an
emerging
class
of
artificial
chiral
materials
tailorable
properties.
The
ability
to
extend
their
chiroplasmonic
responses
the
near-infrared
(NIR)
range
is
critically
important
for
biomedical
and
nanophotonic
applications,
yet
rational
design
such
remains
challenging.
Herein,
a
strategy
employing
plasmon-dielectric
coupling
proposed
manipulate
chiroptical
into
NIR
region
high
optical
anisotropy.
Through
this
strategy,
helicoid
Au@Cu
