Advanced Optical Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 16, 2025
Abstract
DNA‐stabilized
silver
nanoclusters
(DNA‐Ag
N
)
are
atomically
precise
and
sequence‐tuned
nanomaterials
with
potential
applications
for
deep
tissue
biomedical
imaging.
Here,
a
dual‐emissive
DNA‐Ag
is
presented
fluorescence
in
the
first
near‐infrared
(NIR‐I)
spectral
window
microsecond‐lived
photoluminescence
second
(NIR‐II)
window.
High‐resolution
electrospray
ionization
mass
spectrometry
showed
that
emitter
has
molecular
formula
(DNA)
2
[Ag
17
]
11+
.
The
crystallization
of
was
unsuccessful,
which
prevented
use
X‐ray
diffraction
to
determine
its
structure.
However,
sequence
variations
templating
DNA
oligomer
provided
insights
into
nucleobases
critical
stabilizing
Ag
Moreover,
addition
an
adenosine
or
thymidine
at
5′‐end
strand
maintained
composition
photophysical
properties
,
suggesting
site
conjugation
biomolecules
enable
targeted
labeling
future
bioimaging
applications.
Nanoscale,
Journal Year:
2024,
Volume and Issue:
16(26), P. 12329 - 12344
Published: Jan. 1, 2024
Achieving
atomic
precision
in
nanostructured
materials
is
essential
for
comprehending
formation
mechanisms
and
elucidating
structure-property
relationships.
Within
the
realm
of
nanoscience
technology,
atomically
precise
ligand-protected
noble
metal
nanoclusters
(NCs)
have
emerged
as
a
rapidly
expanding
area
interest.
These
clusters
manifest
quantum
confinement-induced
optoelectronic,
photophysical,
chemical
properties,
along
with
remarkable
catalytic
capabilities.
Among
coinage
metals,
silver
distinguishes
itself
fabrication
stable
nanoclusters,
primarily
due
to
its
cost-effectiveness
compared
gold.
This
minireview
provides
an
overview
recent
advancements
since
2020
synthetic
methodologies
ligand
selections
toward
attaining
NCs
boasting
minimum
two
free
valence
electrons.
Additionally,
it
explores
strategies
fine-tuning
optical
properties.
The
discussion
extends
surface
reactivity,
how
exposure
ligands,
heat,
light
induces
transformations
size
structure.
Of
paramount
significance
are
applications
reactions
energy
conversion,
supplemented
by
in-depth
mechanistic
insights.
Furthermore,
review
delineates
challenges
outlines
future
directions
NC
field,
eye
design
new
functional
prospective
diverse
technologies,
including
optoelectronics,
fine
synthesis.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 30, 2024
Abstract
The
combination
of
atomically
precise
nanoclusters
(APNCs)
and
reticular
frameworks
is
promising
for
generating
component‐specific
nanocomposites
with
emergent
properties.
However,
traditional
liquid‐phase
synthesis
often
hampers
this
potential
by
damaging
APNCs
limiting
diversity.
Here,
mechanochemical
to
explore
the
encapsulation
diverse
oil‐
water‐soluble
within
various
employed,
establishing
a
database
21
unique
APNC−framework
combinations,
including
metal−organic
(MOFs),
covalent−organic
(COFs),
hydrogen−bonded
organic
(HOFs),
multivariate
MOFs.
These
framework
coatings
not
only
spatially
immobilize
but
also
secure
their
structures,
preventing
aggregation
degradation
while
enhancing
stability
activity.
Encapsulating
Au
25
in
HOFs
resulted
remarkable
315‐fold
increase
catalytic
activity
compared
homogeneous
catalyst,
highlighting
framework's
crucial
role
enhancement.
strategy
facilitates
tailored
support
screening,
catering
specific
needs,
shows
promise
developing
multifunctional
systems,
enzyme−APNC@frameworks
material
cascade
reactions.
Chemical Science,
Journal Year:
2023,
Volume and Issue:
14(41), P. 11340 - 11350
Published: Jan. 1, 2023
Ag
N
-DNAs
emitters
at
the
far
red/NIR
spectral
border
have
either
6
or
8
valence
electrons
and
least
three
distinct
ligand
compositions.
Stokes
shift
magnitude
CD
signatures
are
correlated
with
composition.
Advanced Optical Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 16, 2025
Abstract
DNA‐stabilized
silver
nanoclusters
(DNA‐Ag
N
)
are
atomically
precise
and
sequence‐tuned
nanomaterials
with
potential
applications
for
deep
tissue
biomedical
imaging.
Here,
a
dual‐emissive
DNA‐Ag
is
presented
fluorescence
in
the
first
near‐infrared
(NIR‐I)
spectral
window
microsecond‐lived
photoluminescence
second
(NIR‐II)
window.
High‐resolution
electrospray
ionization
mass
spectrometry
showed
that
emitter
has
molecular
formula
(DNA)
2
[Ag
17
]
11+
.
The
crystallization
of
was
unsuccessful,
which
prevented
use
X‐ray
diffraction
to
determine
its
structure.
However,
sequence
variations
templating
DNA
oligomer
provided
insights
into
nucleobases
critical
stabilizing
Ag
Moreover,
addition
an
adenosine
or
thymidine
at
5′‐end
strand
maintained
composition
photophysical
properties
,
suggesting
site
conjugation
biomolecules
enable
targeted
labeling
future
bioimaging
applications.
