Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(25)
Published: Feb. 6, 2024
Abstract
Afterglow
materials
have
attracted
much
attention
owing
to
their
long
luminescence
lifetimes,
large
Stokes
shifts,
and
emission
without
real‐time
excitation.
Compared
with
traditional
organic
afterglow
materials,
carbon
dots
(CDs),
as
a
new
material,
superior
properties
such
easy
preparation,
low
toxicity,
cost.
The
color
of
CDs
can
be
regulated
by
external
factors
excitation
wavelength,
temperature,
time,
which
is
highly
significant
for
expanding
the
diversified
applications
make
them
available
biotechnology
information
applications.
This
review
summarizes
research
progress
multicolor
in
recent
years,
including
regulation
strategies,
preparation
methods,
First,
are
classified
into
three
strategies:
room
temperature
phosphorescence
(RTP),
thermally
activated
delayed
fluorescence
converted
RTP,
based
on
Förster
resonance
energy
transfer,
strategies
regulating
analyzed.
Second,
methods
achieving
summarized
both
matrix‐free
matrix‐confined
aspects.
Then,
anticounterfeiting
encryption,
sensing
bioimaging
introduced
detail.
Finally,
future
challenges
opportunities
prospected
provide
ideas
controlled
design
wide
application.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(16)
Published: March 12, 2021
Abstract
The
development
of
phosphorescent
materials
with
time‐dependent
phosphorescence
colors
(TDPCs)
is
considerable
interest
for
application
in
advanced
dynamic
information
encryption.
In
this
study,
TDPC
realized
carbon
dots
(CDs)
synthesized
by
the
one‐pot
hydrothermal
treatment
levofloxacin.
CD
ink
printed
on
paper
(CD@paper)
exhibits
a
change
color
from
orange
to
green,
1
s
after
irradiation
395
nm
light.
However,
when
irradiated
wavelengths
shorter
or
longer
than
nm,
CD@paper
only
green
red
phosphorescence,
respectively.
and
originates
low‐energy
surface
oxide
triplet
state
high‐energy
N‐related
state,
When
suitable
light
energy
(around
wavelength),
two
centers
can
be
simultaneously
activated,
emitting
different
decay
rates.
merge
into
an
initially,
exhibiting
phenomenon.
Based
unusual
properties
CDs,
kind
multilevel,
colored
3D
code
designed
Small Science,
Journal Year:
2022,
Volume and Issue:
2(6)
Published: May 8, 2022
Carbon
dots
(CDs),
comprising
crystalline
graphitized
carbon
cores
and
polymer
surface
groups,
are
currently
attracting
a
lot
of
interest
in
biological
fields
owing
to
their
fluorescent
properties,
high
photostability,
biocompatibility
low
toxicity.
In
addition,
the
easy
preparation
functionalization
CDs
stimulate
development
CDs‐based
composite
materials
with
specific
functions.
Presently,
applications
growing
at
remarkable
speed,
justifying
need
for
up‐to‐date
review
articles
that
capture
recent
progress
this
blossoming
field.
review,
breakthroughs
synthesis,
modification,
optical
toxicology
biocatalytic
platforms
described.
Further,
research
related
bioimaging,
biosensing,
drug
delivery,
antibacterial,
anticancer
(photothermal
therapy,
photodynamic
therapy
synergistic
therapy)
antiviral
therapies
involving
discussed
detail.
Finally,
perspective
on
prospects
challenges
biomedicine
biotechnology
is
provided.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Sept. 30, 2022
Theranostic
sonosensitizers
with
combined
sonodynamic
and
near
infrared
(NIR)
imaging
modes
are
required
for
guided
therapy
(SDT).
It
is
challenging,
however,
to
realize
a
single
material
that
simultaneously
endowed
both
NIR
emitting
activities.
Herein,
we
report
the
design
of
class
NIR-emitting
from
phosphorescent
carbon
dot
(CD)
narrow
bandgap
(1.62
eV)
long-lived
excited
triplet
states
(11.4
μs),
two
which
can
enhance
SDT
as
thermodynamically
dynamically
favorable
factors
under
low-intensity
ultrasound
irradiation,
respectively.
The
NIR-phosphorescent
CDs
identified
bipolar
quantum
dots
containing
p-
n-type
surface
functionalization
regions
drive
spatial
separation
e--h+
pairs
fast
transfer
reaction
sites.
Importantly,
cancer-specific
targeting
high-level
intratumor
enrichment
theranostic
achieved
by
cancer
cell
membrane
encapsulation
precision
complete
eradication
solid
tumors
injection
irradiation.
These
results
will
open
up
promising
approach
engineer
materials
tumor
therapy.
Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
52(22), P. 8005 - 8058
Published: Jan. 1, 2023
Afterglow
materials
have
attracted
widespread
attention
owing
to
their
distinctive
and
long-lived
optical
emission
properties
which
create
exciting
opportunities
in
various
fields.
ACS Nano,
Journal Year:
2021,
Volume and Issue:
15(10), P. 16242 - 16254
Published: Oct. 8, 2021
Water-soluble
red
afterglow
imaging
agents
based
on
ecofriendly
nanomaterials
have
potential
application
in
time-gated
bioimaging
due
to
their
larger
penetration
depth
and
nondurable
excitation.
Herein,
consisted
of
Rhodamine
B
(RhB)
carbon
nanodots
(CNDs)
been
designed
demonstrated.
In
these
agents,
CNDs
act
as
energy
donors,
RhB
acts
an
acceptor.
Both
them
are
confined
into
a
hydrophilic
silica
shell
form
CNDs-RhB@silica
nanocomposite.
The
phosphorescence
emission
spectrum
the
absorption
match
well,
efficient
transfer
from
via
Förster
resonant
process
can
be
achieved,
with
efficiency
reach
99.2%.
Thus,
as-prepared
nanocomposite
emit
aqueous
solution,
extend
first
near-infrared
window
(NIR-I).
luminescence
lifetime
quantum
yield
(QY)
0.91
s
3.56%,
respectively,
which
best
results
region.
Time-gated
vivo
has
demonstrated
by
using
agents.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
35(6)
Published: Nov. 22, 2022
Highly
efficient
emission
has
been
a
long-lasting
pursuit
for
carbon
dots
(CDs)
owing
to
their
enormous
potential
in
optoelectronic
applications.
Nevertheless,
room-temperature
phosphorescence
(RTP)
performance
still
largely
lags
behind
outstanding
fluorescence
emission,
especially
the
blue
spectral
region.
Herein,
high-efficiency
RTP
CDs
have
designed
and
constructed
via
simple
molecular
engineering
strategy,
enabling
with
an
unprecedented
quantum
efficiency
of
50.17%
long
lifetime
2.03
s.
This
treating
route
facilitates
formation
high-density
(n,
π*)
configurations
CD
π-π
conjugate
system
through
introduction
abundant
functional
groups,
which
can
evoke
strong
spin-orbit
coupling
further
promote
intersystem
crossing
from
singlet
triplet
excited
states
radiative
recombination
ground
state.
With
phosphorescent
as
donors,
green,
red,
white
afterglow
composites
are
successfully
fabricated
effective
Förster
resonance
energy
transfer.
Importantly,
color
temperature
be
widely
facilely
tuned
cool
pure
warm
white.
Moreover,
advanced
information
encryption,
light
illumination,
afterglow/dynamic
visual
display
demonstrated
when
using
these
multicolor-emitting
CD-based
systems.
Angewandte Chemie International Edition,
Journal Year:
2021,
Volume and Issue:
60(41), P. 22253 - 22259
Published: Aug. 14, 2021
Abstract
Room‐temperature
afterglow
(RTA)
materials
with
long
lifetime
have
shown
tremendous
application
prospects
in
many
fields.
However,
there
is
no
general
design
strategy
to
construct
near‐infrared
(NIR)‐excited
multicolor
RTA
materials.
Herein,
we
report
a
universal
approach
based
on
the
efficient
radiative
energy
transfer
that
supports
reabsorption
from
upconversion
(UMs)
carbon
dots‐based
(CDAMs).
Thus,
emission
(blue,
cyan,
green,
and
orange)
of
various
CDAMs
can
be
activated
by
UMs
under
NIR
continuous‐wave
laser
excitation.
The
ensured
persistent
up
7
s,
6
5
0.5
s
naked
eyes,
respectively.
Given
unusual
properties,
demonstrated
preliminary
applications
fingerprint
recognition
information
security.
This
work
provides
new
avenue
for
activation
NIR‐excited
will
greatly
expand
