ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(11), P. 13736 - 13744
Published: May 31, 2024
Although
carbon
dots
(CDs)
have
been
widely
investigated
as
the
fluorescence
material,
research
on
room
temperature
phosphorescence
(RTP)
CDs
is
still
limited.
In
this
work,
diethylenetriaminepentaacetic
acid
(DTPA)
was
employed
raw
material
to
synthesize
quantum
(denoted
CQDs-1)
by
a
hydrothermal
method.
The
resulting
CQDs-1
inherited
C═O
groups
and
N
atoms
from
DTPA,
which
promoted
formation
of
triplet
excitons
under
light
excitation.
On
basis,
were
dispersed
in
poly(vinyl
alcohol)
(PVA)
matrix
prepare
CQDs-1-PVA
composites
that
exhibited
an
optimal
emission
peak
at
∼466
nm
emitted
visible
afterglow
lasting
for
8
s.
Moreover,
tartaric
(TA)
combined
with
DTPA
CQDs-2,
induced
π–π
conjugated
areas
CQDs.
As
result,
wavelength
slightly
red-shifted,
duration
time
CQDs-2-PVA
composite
increased
9
Due
ultralong-lifetime
RTP
properties
CQDs-based
composites,
their
applications
fields
information
encryption
anticounterfeiting
also
investigated.
Overall,
our
work
offered
convenient
avenue
synthesis
high-quality
Materials Horizons,
Journal Year:
2023,
Volume and Issue:
11(1), P. 113 - 133
Published: Oct. 5, 2023
This
is
a
comprehensive
and
systematic
review
focusing
on
CDs@IMs
from
multiple
perspectives
of
construction,
performance,
mechanism,
multifunctional
applications.
Small Methods,
Journal Year:
2023,
Volume and Issue:
8(1)
Published: Oct. 27, 2023
Abstract
Carbon
dots
(CDs),
as
emerging
long
afterglow
luminescent
material,
have
attracted
the
attention
of
researchers
and
become
one
hot
topics
in
materials.
In
recent
years,
obtained
a
series
CDs‐based
materials
with
different
properties
utilizing
matrix‐assisted
self‐protective
methods.
To
meet
diverse
application
needs,
development
multicolor
is
focus
challenge
this
field.
Most
previously
reported
generally
emit
blue
or
green
afterglow.
Recently,
some
systems
been
discovered,
emission
range
can
extend
from
ultraviolet
to
near‐infrared.
However,
there
lack
systematic
in‐depth
analysis
regarding
preparation
strategy
luminescence
mechanism
Based
on
this,
review
summarizes
strategies
raw
reaction
parameters.
Then,
mechanisms
are
analyzed
seven
factors,
including
carbonization
degree,
surface
state,
aggregation
temperature
dependence,
excitation
multi‐emission
center,
energy
transfer.
Moreover,
applications
introduced.
Finally,
problems
challenges
field
discussed,
future
directions
analyzed.
Materials Chemistry Frontiers,
Journal Year:
2023,
Volume and Issue:
8(4), P. 930 - 955
Published: Dec. 7, 2023
This
review
mainly
summarizes
the
research
advances
in
synthetic
strategies,
optical
properties,
and
biomedical
applications
of
red-emissive
carbon
dots
recent
years.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(11), P. 13736 - 13744
Published: May 31, 2024
Although
carbon
dots
(CDs)
have
been
widely
investigated
as
the
fluorescence
material,
research
on
room
temperature
phosphorescence
(RTP)
CDs
is
still
limited.
In
this
work,
diethylenetriaminepentaacetic
acid
(DTPA)
was
employed
raw
material
to
synthesize
quantum
(denoted
CQDs-1)
by
a
hydrothermal
method.
The
resulting
CQDs-1
inherited
C═O
groups
and
N
atoms
from
DTPA,
which
promoted
formation
of
triplet
excitons
under
light
excitation.
On
basis,
were
dispersed
in
poly(vinyl
alcohol)
(PVA)
matrix
prepare
CQDs-1-PVA
composites
that
exhibited
an
optimal
emission
peak
at
∼466
nm
emitted
visible
afterglow
lasting
for
8
s.
Moreover,
tartaric
(TA)
combined
with
DTPA
CQDs-2,
induced
π–π
conjugated
areas
CQDs.
As
result,
wavelength
slightly
red-shifted,
duration
time
CQDs-2-PVA
composite
increased
9
Due
ultralong-lifetime
RTP
properties
CQDs-based
composites,
their
applications
fields
information
encryption
anticounterfeiting
also
investigated.
Overall,
our
work
offered
convenient
avenue
synthesis
high-quality
