Materials Research,
Год журнала:
2024,
Номер
27(suppl 1)
Опубликована: Янв. 1, 2024
The
use
of
fluorescent
nanomaterials
in
various
fields
study
has
become
increasingly
common.
In
this
work,
the
carbon
quantum
dots
as
a
corrosion
marker
steel
is
proposed.
To
produce
sensor,
based
on
ethylenediamine
and
citric
acid
were
used,
dissolved
polymeric
matrix.
dot
used
showed
yield
42.34%.
nanomodified
coatings
emitted
blue
light
under
ultraviolet
radiation
lamp.
However,
it
was
observed
that
there
loss
photoluminescence
coating
substrate
compared
to
substrate,
which
maintained
activity
after
natural
exposure.
Thus,
inferred
may
be
associated
with
process.
Advanced Materials,
Год журнала:
2024,
Номер
36(27)
Опубликована: Апрель 23, 2024
Abstract
The
development
of
single‐system
materials
that
exhibit
both
multicolor
room‐temperature
phosphorescence
(RTP)
and
thermally
activated
delayed
fluorescence
(TADF)
with
tunable
after
glow
colors
channels
is
challenging.
In
this
study,
four
metal‐free
carbon
dots
(CDs)
are
developed
through
structural
tailoring,
panchromatic
high‐brightness
RTP
achieved
via
strong
chemical
encapsulation
in
urea.
maximum
lifetime
quantum
yield
reaches
2141
ms
56.55%,
respectively.
Moreover,
CDs‐IV@urea,
prepared
coreshell
interaction
engineering,
exhibits
a
dual
afterglow
red
green
TADF.
degree
conjugation
functional
groups
precursors
affects
the
binding
interactions
nitrogen
cladding
on
CDs,
which
turn
stabilizes
triplet
energy
levels
gap
between
S
1
T
(Δ
E
ST
)
to
induce
RTP.
enhanced
wrapping
lowers
Δ
,
promoting
reverse
intersystem
crossing,
leads
This
fully
state,
thus
stabilizing
material
water,
even
extreme
environments
such
as
acids
oxidants.
These
tested
multicolor,
time,
temperature
multiencryption
well
vivo
bioimaging.
Hence,
these
have
promising
practical
applications
information
security
biomedical
diagnosis
treatment.
Advanced Materials,
Год журнала:
2024,
Номер
36(24)
Опубликована: Фев. 29, 2024
Abstract
The
development
of
bright
and
long‐lived
aqueous
room‐temperature
phosphorescent
(RTP)
materials
holds
paramount
importance
in
broadening
the
application
scope
RTP
material
system.
However,
conventional
usually
exhibit
low
efficiency
short
lifetime
solution.
Herein,
an
situ
host–guest
strategy
is
proposed
to
achieve
cyanuric
acid
(CA)‐derived
carbon
nitrogen
dots
(CNDs)
composite
(CNDs@CA)
that
demonstrates
a
significant
enhancement
both
quantum
yield
(QY)
mediated
by
water.
Detailed
investigations
reveal
robust
hydrogen
bonding
networks
between
CNDs@CA
water
effectively
stabilize
triplet
excitons
suppress
nonradiative
decays,
as
well
facilitate
efficient
energy
transfer
from
CA
CNDs,
thereby
prolonging
enhancing
RTP.
QY
can
be
increased
26.89%
(3.9‐fold
increase)
951.25
ms
(5.5‐fold
increase),
respectively,
with
incorporation
50
wt%
under
ambient
conditions.
Even
fully
environments
(with
up
400
added),
exhibits
persistent
water‐boosted
properties,
demonstrating
exceptional
stability.
property
solutions
presents
potential
for
high
signal‐to‐noise
ratio
afterglow
bioimaging
advanced
information
encryption.
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Abstract
Room
temperature
phosphorescence
(RTP)
materials
have
broad
applications
in
the
field
of
optical
devices
due
to
tunable
wavelengths
and
lifetimes.
However,
creating
efficient
RTP
that
possess
multiple
properties
remains
a
challenge.
Herein,
novel
approach
is
developed
situ
form
carbon
quantum
dots
(C‐dots)
embedded
boron
nitride
carbide
oxide
(B‐N‐C‐O)
matrices
by
introducing
nitrogen,
phosphorus,
dopants
into
C‐dots
(P/B/N
doped
C‐dots),
enabling
dual
emissions
time‐dependent
afterglow.
P/B/N
are
synthesized
vacuum‐assisted
gradient
heating
using
ethylenediamine,
phosphoric
acid,
boric
acid
as
precursors
with
yield
20
g
per
batch.
The
introduction
provided
triplet
states,
which
enable
and,
long
phosphorescent
lifetime
ranging
from
0.98
1.30
s.
formation
surrounding
enables
ultrahigh
up
50%,
surpassing
most
recently
reported
C‐dots.
To
demonstrate
potential
C‐dots,
they
used
anti‐counterfeiting
ink
dyes
for
security
codes
polyester
yarn,
showing
their
suitability
high‐level
applications.
This
work
provides
an
effective
route
large‐scale
synthesis
highly
preparation
high‐performance
devices.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(6), С. 6109 - 6119
Опубликована: Март 6, 2024
This
study
presents
an
innovative
approach
to
design
room
temperature
phosphorescent
(RTP)
carbon
dot
composites
with
ultralong
afterglow
lifetimes
in
both
solid
and
liquid
states.
The
proposed
composites,
namely,
L-NCDs-BA
(solid)
L-NCDs-SiO2
(liquid),
were
synthesized
through
a
straightforward
hydrothermal
method.
composite
achieved
lifetime
of
1.63
s,
while
the
demonstrated
notable
1.30
s.
These
values
surpass
most
reported
nonmetallic
RTP
materials
date.
Morphological
structural
analyses
confirmed
effective
encapsulation
within
boric
acid
matrix
silica
framework,
providing
protection
against
quenching
factors.
displayed
excitation-dependent
fluorescence
emission,
allowing
for
color-tunable
fluorescence.
Applications
information
encryption
biological
detection
explored,
showcasing
potential
anticounterfeiting
selective
sensing
L-NCDs
composites.
provides
comprehensive
exploration
structure,
photophysical
properties,
applications
ultralong-lived
offer
promising
avenues
advanced
optoelectronic
devices,
technologies,
systems.
