Graphene
quantum
dots
(GQDs)
have
garnered
significant
attention
in
recent
years
due
to
their
unique
properties
and
promising
applications
various
fields
such
as
electronics,
optoelectronics,
bioimaging,
sensing.
The
synthesis
of
GQDs
is
a
critical
step
harnessing
potential,
numerous
methods
been
developed
produce
with
specific
properties.
This
review
provides
an
overview
the
different
techniques
employed
for
synthesizing
GQDs,
including
top-down
bottom-up
approaches.
Furthermore,
it
discusses
advantages,
limitations,
potential
each
method,
offering
insights
into
future
direction
GQD
research.
Energy & environment materials,
Journal Year:
2023,
Volume and Issue:
7(3)
Published: June 29, 2023
In
recent
years,
paper‐based
functional
materials
have
received
extensive
attention
in
the
field
of
energy
storage
due
to
their
advantages
rich
and
adjustable
porous
network
structure
good
flexibility.
As
an
important
device,
supercapacitors
application
prospects
many
fields
also
from
researchers
years.
At
present,
modified
regulated
by
different
means
such
as
structural
design
material
composition
enhance
electrochemical
capacity.
The
development
provides
direction
for
green
sustainable
energy.
Therefore,
it
is
great
significance
summarize
relevant
work
rapid
application.
this
review,
research
progress
based
on
cellulose
was
summarized
terms
various
cellulose‐based
composites,
preparation
skills,
performance.
Finally,
some
opinions
problems
future
trend
were
proposed.
It
hoped
that
review
can
provide
valuable
references
ideas
devices.
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(9), P. 2904 - 2911
Published: Feb. 22, 2024
Carbon
dots
(CDs)
are
promising
luminescent
emission
layer
materials
for
next
generation
electroluminescent
light
emitting
diodes
(EL-LEDs)
due
to
their
many
advantages,
such
as
environmental
friendliness,
low
cost,
and
high
stability.
However,
limited
by
the
spin-forbidden
properties
of
triplet
transition,
it
is
difficult
improve
external
quantum
efficiency
(EQE)
fluorescent
CDs-based
EL-LEDs.
Meanwhile,
traditional
thermally
activated
delayed
(TADF)
CDs
prepared
using
coating
strategies
utilize
in
EL-LEDs
nonconductivity
agent.
Herein,
we
successfully
developed
matrix-free
TADF
with
yellow
achieved
a
device
EQE
5.68%,
which
highest
value
reported
In
addition,
also
white
an
1.70%.
This
study
highlights
importance
interactions
between
precursors
modulating
electroluminescence
emitters
provides
effective
design
principle
CDs.
Accounts of Chemical Research,
Journal Year:
2024,
Volume and Issue:
57(19), P. 2928 - 2939
Published: Sept. 19, 2024
ConspectusCarbon
dots
(CDs),
as
a
novel
type
of
fluorescent
nanocarbon
material,
attract
widespread
attention
in
nanomedicine,
optoelectronic
devices,
and
energy
conversion/storage
due
to
their
excellent
optical
properties,
low
toxicity,
high
stability.
They
can
be
classified
graphene
quantum
dots,
carbon
carbonized
polymer
(CPDs).
Among
these,
CPDs
exhibit
tunable
structures
components
that
allow
fine-tuning
making
them
one
the
most
popular
types
CDs
recent
years.
However,
structural
complexity
stimulates
deep
exploration
relationship
between
unique
structure
luminescent
performance.
As
an
organic-inorganic
hybrid
system,
diversity
self-limited
state
cores
polymer-hybrid
shell
layers
makes
understanding
underlying
mechanisms
structure-property
relationships
very
challenging
task.
In
this
context,
elucidating
composition
factors
affect
properties
is
vital
if
enormous
potential
realized.
Achieving
controllable
with
predefined
via
adoption
specific
functionalization
strategies
prized
goal
current
researchers
field.In
Account,
we
describe
efforts
made
by
our
group
synthesis,
mechanism
analysis,
regulation,
functional
applications
CPDs,
particular
emphasis
on
design
core-shell
tailored
for
fields
optoelectronics
energy.
Specifically,
through
rational
selection
precursors,
optimization
reaction
conditions,
postmodification
have
demonstrated
it
possible
regulate
both
core
layers,
thereby
achieving
full-spectrum
emission,
yield,
persistent
luminescence,
thermally
activated
delayed
fluorescence,
laser
action
CPDs.
Furthermore,
established
structure-performance
proposed
universal
strategy
synergistic
interactions
carbon-based
surface
micronanostructures.
addition,
unveiled
luminescence
cross-linked
specifically
"cross-linking
synergistically
inducing
quantum-state
luminescence",
which
addresses
challenge
efficient
circularly
polarized
liquid
solid
phases
Subsequently,
strong
cross-linking,
dual-rigidity,
ordering
preparation
methods
were
introduced,
pioneering
emission
from
blue
near-infrared
wavelengths.
Additionally,
developed
new
"confined
composite
nanocrystals
CPDs",
leading
various
high-performance
hydrogen
evolution
catalysts
water
electrolysis.
The
not
only
possessed
but
also
enabled
efficiencies
field
conversion,
thus
maximizing
utilization
Finally,
discuss
important
trends
CPD
research
development.
Overall,
Account
summarizes
latest
advancements
years,
providing
case-studies
enable
structure-property-performance
regulation
guiding
future
expansion
application
Biosensors and Bioelectronics,
Journal Year:
2025,
Volume and Issue:
273, P. 117180 - 117180
Published: Jan. 25, 2025
Quantum
dots
(QDs)
are
the
smallest
nanomaterials
(2-10
nm),
with
unique
optical
and
electronic
properties.
Thanks
to
these
properties,
QDs
have
been
standing
during
last
years
as
signal
tags
for
different
applications,
including
bioimaging,
fluorescent
biosensors
electrochemical
assays.
In
this
review,
we
explore
current
state-of-the
art
on
nanomaterials,
differentiating
them
between
semiconductor
carbon-based
QDs.
Also,
review
focuses
their
advantages
transducers
in
biosensing
platforms.
Nano Letters,
Journal Year:
2023,
Volume and Issue:
23(18), P. 8794 - 8800
Published: July 24, 2023
Carbon
dots
(CDs)
are
promising
nanomaterials
for
next-generation
lighting
and
displays
due
to
their
tunable
bandgap,
high
photoluminescence
quantum
yield
(PLQY),
stability.
However,
the
exciton
utilization
efficiency
(EUE)
of
CD-based
films
can
only
reach
25%,
fundamentally
limiting
application
in
electroluminescent
light-emitting
diodes
(LEDs).
Improving
EUE
is
therefore
great
significance.
Herein,
we
developed
composite
containing
CDs
poly(9-vinylcarbazole)
(PVK).
The
were
then
used
construct
a
series
high-performance
LEDs
with
emission
colors
covering
blue
green
regions
as
concentration
increased,
delivering
maximum
external
current
2.62%
5.11
cd/A,
respectively.
Theoretical
calculations
experiments
established
that
excellent
performance
at
low
film
PLQY
was
hot
effect
CDs,
achieving
nearly
100%
EUE.
This
work
provides
new
design
strategies
toward
LEDs.
ACS Omega,
Journal Year:
2023,
Volume and Issue:
8(24), P. 21358 - 21376
Published: June 7, 2023
Graphene
quantum
dots
(GQDs)
are
carbon-based,
zero-dimensional
nanomaterials
and
unique
due
to
their
astonishing
optical,
electronic,
chemical,
biological
properties.
Chemical,
photochemical,
biochemical
properties
of
GQDs
intensely
being
explored
for
bioimaging,
biosensing,
drug
delivery.
The
synthesis
by
top-down
bottom-up
approaches,
chemical
functionalization,
bandgap
engineering,
biomedical
applications
reviewed
here.
Current
challenges
future
perspectives
also
presented.
