Journal of Optical Technology,
Journal Year:
2024,
Volume and Issue:
91(6), P. 362 - 362
Published: June 1, 2024
Subject
of
study
.
This
is
focused
on
luminescent
carbon
dots
derived
from
o-phenylenediamine
and
gadolinium
chloride
or
nitrate
hexahydrate.
Aim
study.
The
aims
to
fabricate
long-wavelength
photoluminescent
gadolinium-doped
that
could
function
as
contrast
agents
for
magnetic
resonance
imaging.
Additionally,
the
investigates
impact
precursor
type
used
chemical
composition
optical
transitions
resulting
nanoparticles.
Method.
Carbon
were
synthesized
using
a
one-step
solvothermal
method,
their
properties
analyzed
spectroscopy
methods.
Magnetic
imaging
was
conducted
clinical
scanner
with
field
strength
1.5
T.
Main
results.
In
this
study,
two
types
hexahydrate
method.
Metal
doping,
at
concentration
sufficient
further
investigations,
achieved
only
when
used.
presence
during
synthesis
leads
formation
centers
within
emission
600–720
nm
photoluminescence
quantum
yield
6.3%.
contrast,
increases
nitrogen
content
o-phenylenediamine-based
while
inhibiting
metal
doping.
band
an
maximum
550
7.4%
originates
derivatives
formed
such
dots.
results
also
show
alter
relaxation
times
scanning,
calculated
relaxivity
(
r
1
2
)
values
are
6.4
38.6L⋅mmol
−1
⋅s
,
respectively.
Thus,
positive
scanning.
Practical
significance.
promising
nanoprobes
luminescence
With
these
nanoparticles
can
be
Consequently,
based
utilized
dual-mode
bioimaging.
Materials,
Journal Year:
2024,
Volume and Issue:
17(2), P. 449 - 449
Published: Jan. 17, 2024
In
this
study,
we
introduce
novel
microporous
poly(D,L-lactide)
acid–carbon
nanodot
(PLA-CD)
nanocomposite
scaffolds
tailored
for
potential
applications
in
image-guided
bone
regeneration.
Our
primary
objective
was
to
investigate
concentration-dependent
structural
variations
and
their
relevance
cell
growth,
crucial
aspects
The
methods
employed
included
comprehensive
characterization
techniques
such
as
DSC/TGA,
FTIR,
rheological,
degradation
assessments,
providing
insights
into
the
scaffolds’
thermoplastic
behavior,
microstructure,
stability
over
time.
Notably,
PLA-CD
exhibited
distinct
self-fluorescence,
which
persisted
after
21
days
of
incubation,
allowing
detailed
visualization
various
multicolor
modalities.
Biocompatibility
assessments
were
conducted
by
analyzing
human
adipose-derived
stem
(hADSC)
growth
on
scaffolds,
with
results
substantiated
through
viability
morphological
analyses.
hADSCs
reached
a
125%
penetrated
throughout
scaffold
incubation.
These
findings
underscore
regeneration
fluorescence
imaging.
multifunctional
nature
nanocomposite,
integrating
diagnostic
capabilities
tunable
properties,
positions
it
promising
candidate
advancing
tissue
engineering.
study
not
only
highlights
key
investigation
but
also
underscores
specific
application
regeneration,
foundation
further
research
optimization
critical
biomedical
field.
Chemistry - An Asian Journal,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 5, 2024
Abstract
Carbon
dots
(CDs)
are
carbon‐based
nanomaterials
that
have
garnered
immense
attention
owing
to
their
exceptional
photophysical
and
optoelectronic
properties.
They
been
employed
extensively
for
biomedical
imaging
phototherapy
due
superb
water
dispersibility,
low
toxicity,
outstanding
biocompatibility,
tissue
permeability.
This
review
summarizes
the
structural
classification
of
CDs,
CDs
according
precursor
sources,
luminescence
mechanism
CDs.
The
modification
in
via
various
doping
routes
is
comprehensively
reviewed,
effect
such
alterations
on
properties,
as
absorbance,
photoluminescence
(PL),
reactive
oxygen
species
generation
ability,
also
highlighted.
strives
summarize
role
cellular
fluorescence
lifetime
metabolism.
Subsequently,
recent
advancements
future
potential
nanotheranostic
agents
discussed.
Herein,
we
discussed
photothermal,
photodynamic,
synergistic
therapy
anticancer,
antiviral,
antibacterial
applications.
overall
summary
highlights
prospects
CD‐based
research
bioimaging
biomedicine.
Journal of Optical Technology,
Journal Year:
2024,
Volume and Issue:
91(6), P. 362 - 362
Published: June 1, 2024
Subject
of
study
.
This
is
focused
on
luminescent
carbon
dots
derived
from
o-phenylenediamine
and
gadolinium
chloride
or
nitrate
hexahydrate.
Aim
study.
The
aims
to
fabricate
long-wavelength
photoluminescent
gadolinium-doped
that
could
function
as
contrast
agents
for
magnetic
resonance
imaging.
Additionally,
the
investigates
impact
precursor
type
used
chemical
composition
optical
transitions
resulting
nanoparticles.
Method.
Carbon
were
synthesized
using
a
one-step
solvothermal
method,
their
properties
analyzed
spectroscopy
methods.
Magnetic
imaging
was
conducted
clinical
scanner
with
field
strength
1.5
T.
Main
results.
In
this
study,
two
types
hexahydrate
method.
Metal
doping,
at
concentration
sufficient
further
investigations,
achieved
only
when
used.
presence
during
synthesis
leads
formation
centers
within
emission
600–720
nm
photoluminescence
quantum
yield
6.3%.
contrast,
increases
nitrogen
content
o-phenylenediamine-based
while
inhibiting
metal
doping.
band
an
maximum
550
7.4%
originates
derivatives
formed
such
dots.
results
also
show
alter
relaxation
times
scanning,
calculated
relaxivity
(
r
1
2
)
values
are
6.4
38.6L⋅mmol
−1
⋅s
,
respectively.
Thus,
positive
scanning.
Practical
significance.
promising
nanoprobes
luminescence
With
these
nanoparticles
can
be
Consequently,
based
utilized
dual-mode
bioimaging.
