ACS Sustainable Chemistry & Engineering,
Год журнала:
2021,
Номер
9(12), С. 4477 - 4486
Опубликована: Март 18, 2021
Compared
to
ultraviolet
light,
visible
light
as
an
excitation
source
has
lower
phototoxicity
and
deeper
penetrability.
This
is
of
importance
explore
the
application
long
afterglow
materials
with
wavelength.
In
this
work,
multicolor
excited
by
were
prepared
embedding
carbon
dots
(CDs)
in
boron
oxide
(B2O3)
formation
carbon–boron
bonds,
glassy
state
B2O3
during
heating
process
protected
triplet
excitons
from
being
quenched,
thereby
promoting
emission
afterglow.
addition,
some
CDs/B2O3
composites
show
dual-mode
thermally
activated
delayed
fluorescence
(TADF)
room-temperature
phosphorescence
(RTP)
at
same
time.
These
as-designed
exhibit
a
lifetime
445.9
ms,
high
quantum
efficiency
17.61%,
stability.
Meanwhile,
can
be
observed
room
temperature
naked
eye
lasts
for
several
seconds
when
just
switched
off.
as-obtained
visible-light-excited
have
shown
potential
reversible
ratiometric
sensing,
latent
fingerprint
identification,
information
anticounterfeiting,
encryption.
Materials,
Год журнала:
2021,
Номер
14(20), С. 5978 - 5978
Опубликована: Окт. 11, 2021
Carbon
nanomaterials
(CNMs)
have
received
tremendous
interest
in
the
area
of
nanotechnology
due
to
their
unique
properties
and
flexible
dimensional
structure.
CNMs
excellent
electrical,
thermal,
optical
that
make
them
promising
materials
for
drug
delivery,
bioimaging,
biosensing,
tissue
engineering
applications.
Currently,
there
are
many
types
CNMs,
such
as
quantum
dots,
nanotubes,
nanosheets,
nanoribbons;
others
development
promise
exciting
applications
future.
The
surface
functionalization
modifies
chemical
physical
properties,
which
enhances
loading/release
capacity,
ability
target
delivery
specific
sites,
dispersibility
suitability
biological
systems.
Thus,
been
effectively
used
different
biomedical
This
review
explores
physical,
chemical,
allow
improve
on
state
art
currently
discussion
also
embraces
emerging
including
targeted
medical
implants,
engineering,
wound
healing,
vaccination,
photodynamic
therapy.
The Journal of Physical Chemistry Letters,
Год журнала:
2020,
Номер
11(4), С. 1357 - 1363
Опубликована: Фев. 4, 2020
Large
doses
of
anticancer
drugs
entering
cancer
cell
nuclei
are
found
to
be
effective
at
killing
cells
and
increasing
chemotherapeutic
effectiveness.
Here
we
report
red-emissive
carbon
quantum
dots,
which
can
enter
into
the
not
only
but
also
stem
cells.
After
doxorubicin
was
loaded
concentration
30
μg/mL
on
surfaces
average
viability
HeLa
decreased
21%,
while
it
50%
for
free
doxorubicin.
The
doxorubicin-loaded
dots
exhibited
a
good
therapeutic
effect
by
eliminating
This
work
provides
potential
strategy
developing
quantum-dot-based
drug
carriers
eradication
cancers.
Advanced Functional Materials,
Год журнала:
2021,
Номер
31(26)
Опубликована: Апрель 21, 2021
Abstract
Photothermal
agents
with
absorption
in
the
second
near‐infrared
(NIR‐II)
biowindow
have
attracted
increasing
attention
for
photothermal
therapy
(PTT)
on
account
of
their
deeper
tissue
penetration
capacity.
However,
most
current
NIR‐II
exhibit
low
conversion
efficiency
(PCE)
and
long‐term
biotoxicity.
To
overcome
these
shortcomings,
herein,
nickel
nitrogen
co‐doped
carbon
dots
(Ni‐CDs,
≈4.6
nm)
are
prepared
via
a
facile
one‐pot
hydrothermal
approach
imaging‐guided
PTT
window.
The
Ni‐CDs
significant
region
distinguished
PCE
as
high
76.1%
(1064
excellent
photostability
biocompatibility.
Furthermore,
can
be
employed
photothermal,
photoacoustic,
magnetic
resonance
imaging
contrast
because
outstanding
effect
instinctive
paramagnetic
feature.
demonstrate
efficacy
tumor
upon
1064
nm
irradiation
power
density
(0.5
W
cm
−2
).
eliminated
from
body
renal
filtration
pathway,
thereby
minimizing
Therefore,
this
work
provides
simple
feasible
to
develop
remarkable
region,
presenting
good
biosafety
multimodal
tumor.
Carbon
dots
(CDs)
represent
a
recently
emerged
class
of
luminescent
materials
with
great
potential
for
biomedical
theranostics,
and
there
are
lot
efforts
to
shift
their
absorption
emission
toward
deep-red
(DR)
near-infrared
(NIR)
region
falling
in
the
biological
transparency
window.
This
review
offers
comprehensive
insights
into
synthesis
strategies
aimed
achieve
this
goal,
current
approaches
modulating
optical
properties
CDs
over
DR
NIR
region.
The
underlying
mechanisms
absorption,
photoluminescence,
chemiluminescence,
as
well
related
photophysical
processes
photothermal
conversion
formation
reactive
oxygen
species
considered.
already
available
applications
CDs,
such
photoacoustic
imaging
therapy,
photodynamic
use
bioimaging
agents
drug
carriers
then
shortly
summarized.
ACS Applied Materials & Interfaces,
Год журнала:
2022,
Номер
14(22), С. 24993 - 25024
Опубликована: Май 23, 2022
There
has
been
a
direct
correlation
between
the
rate
of
industrial
development
and
spread
pollution
on
Earth,
particularly
in
last
century.
The
organic
inorganic
pollutants
generated
from
activities
have
created
serious
risks
to
human
life
environment.
concept
sustainability
emerged
tackle
environmental
issues
developing
chemical-based
industries.
However,
continued
be
discharged
water
resources,
finding
appropriate
techniques
for
removal
remedy
wastewater
is
high
demand.
Chromium
one
high-risk
heavy
metals
wastewaters
that
should
removed
via
physical
adsorption
and/or
transformed
into
less
hazardous
chemicals.
Photocatalysis
as
sustainable
process
received
considerable
attention
it
utilizes
sunlight
irradiation
Cr(VI)
cost-effective
process.
Numerous
photocatalytic
systems
developed
up
now,
but
metal–organic
frameworks
(MOFs)
gained
growing
because
their
unique
versatilities
facile
structural
modulations.
A
variety
MOF-based
photocatalysts
widely
employed
photoreduction
Cr(VI).
Here,
we
review
recent
progress
design
MOF
summarize
performance
reactions.
International Journal of Molecular Sciences,
Год журнала:
2022,
Номер
23(3), С. 1456 - 1456
Опубликована: Янв. 27, 2022
In
this
study,
top-down
syntheses
of
carbon
dots
(CDs)
from
four
different
precursors,
namely,
nano
powders,
graphite,
graphene,
and
nanotubes,
were
carried
out.
Systematic
study
demonstrated
that
the
optical
properties
surface
functionalities
CDs
quite
similar
mainly
influenced
by
synthesis
method,
while
sizes,
morphologies,
chemical
compositions,
core
structures
heavily
precursors.
On
basis
these
studies,
formation
processes
structural
models
proposed.
The
cell
cytotoxicity
photothermal
conversion
efficiency
also
carefully
evaluated,
demonstrating
their
potential
applications
in
therapy.
