Chemistry of Materials,
Journal Year:
2019,
Volume and Issue:
31(23), P. 9887 - 9894
Published: Nov. 15, 2019
Compared
to
fluorescence
imaging
with
short-lived
emissive
probes,
the
use
of
phosphorescent
probes
conveys
advantage
long
signal
persistance
in
time
and
this
permits
one
discriminate
against
interference
from
autofluorescence.
However,
realization
room
temperature
phosphorescence
(RTP)
that
feature
ultralong
emission
lifetimes
aqueous
solution
is
still
a
challenge.
Here,
we
present
rational
strategy
for
realizing
RTP
air-saturated
media
carbon
dot-based
silica
composites
(CDs@SiO2)
which
as
1.64
s.
The
excellent
properties,
their
small
size,
water
solubility
make
CDs@SiO2
promising
material
biological
application.
We
demonstrate
efficient
reporters
both
plant
tissue
animal
cells
where
strong
autofluorescence
poses
severe
challenge
conventional,
short-lifetime
probes.
Journal of Materials Chemistry B,
Journal Year:
2021,
Volume and Issue:
9(33), P. 6553 - 6575
Published: Jan. 1, 2021
Latest
progress
of
CDs
is
systematically
summarized
from
four
aspects:
preparation
methods,
modification
optical
properties,
and
applications
in
biomedical
fields.
Furthermore,
we
also
state
briefly
the
existing
problems
future
development
directions
CDs.
Advanced Functional Materials,
Journal Year:
2019,
Volume and Issue:
29(46)
Published: Sept. 6, 2019
Abstract
Current
fluorescence‐based
anti‐counterfeiting
strategies
primarily
encode
information
onto
single
2D
planes
and
underutilize
the
possibility
of
encrypting
data
inside
3D
structures
to
achieve
multistage
security.
Herein,
a
fluorescent‐hydrogel‐based
platform
is
demonstrated,
which
extends
encryption
capability
from
complex
hydrogel
origami
geometries.
The
materials
are
based
on
perylene‐tetracarboxylic‐acid‐functionalized
gelatin/poly(vinyl
alcohol)
hydrogels,
simultaneously
show
Fe
3+
‐responsive
fluorescence
quenching,
borax‐triggered
shape
memory,
self‐healing
properties.
By
employing
an
technique,
various
geometries
facilely
fabricated.
On
basis
these
results,
in
printed
by
using
as
ink
safely
protected
structures.
In
this
way,
encrypted
cannot
be
read
until
after
specially
predesigned
procedures
(both
recovery
UV
light
illumination
actions),
indicating
higher‐level
security
than
traditional
counterparts.
This
facile
general
strategy
opens
up
utilizing
fluorescent
for
protection.
Small,
Journal Year:
2019,
Volume and Issue:
15(44)
Published: Sept. 13, 2019
Abstract
Monitoring
of
wound
pH
is
critical
for
interpreting
status,
because
early
identification
infection
or
nonhealing
wounds
conducive
to
administion
therapies
at
the
right
time.
Here,
novel
orange‐emissive
carbon
quantum
dots
(O‐CDs)
are
synthesized
via
microwave‐assisted
heating
1,2,4‐triaminobenzene
and
urea
aqueous
solution.
The
as‐prepared
O‐CDs
exhibit
distinctive
colorimetric
response
changing,
also
display
pH‐sensitive
fluorescence.
Benefiting
from
over
a
wound‐relevant
range
(5–9),
medical
cotton
cloth
selected
immobilize
through
hydrogen
bond
interactions,
resultant
O‐CDs‐coated
with
emission
560
nm
shows
high
variation
in
5–9
both
fluorescence
visible
changes.
Moreover,
sensitivity
capable
establishing
an
analytical
mode
determining
value.
Further,
O‐CDs‐based
indicator
possesses
not
only
superior
biocompatibility
drug
compatibility
but
excellent
resistance
leachability
reversibility.
Importantly,
usage
detect
free
interference
blood
contamination
long‐term
storage,
thus
providing
valuable
strategy
monitoring
visual
quantitative
determination.
ACS Nano,
Journal Year:
2020,
Volume and Issue:
14(9), P. 11130 - 11139
Published: Aug. 19, 2020
Circular
polarized
luminescence
(CPL)
is
essential
to
chiral
sciences
and
photonic
technologies,
but
the
achievement
of
circular
room-temperature
phosphorescence
(CPRTP)
remains
a
great
challenge
due
instability
triplet
state
excitons.
Herein,
we
found
that
dual
CPL
CPRTP
were
demonstrated
by
hybrid
films
designed
coassembly
cellulose
nanocrystals
(CNCs),
poly(vinyl
alcohol)
(PVA),
carbon
dots
(CDs).
Tunable
band
gaps
achieved
regulating
ratio
CNC/PVA
in
films,
leading
tunable
with
invertible
handedness,
wavelengths,
considerable
dissymmetric
factors
(glum)
up
−0.27.
In
particularly,
excitons
produced
CDs
stable
crystal
environment,
resulting
right-handed
long
lifetimes
103
ms
large
RTP
(gRTP)
−0.47.
Moreover,
patterned
multiple
features
mold
technique.
Chemistry of Materials,
Journal Year:
2019,
Volume and Issue:
31(23), P. 9887 - 9894
Published: Nov. 15, 2019
Compared
to
fluorescence
imaging
with
short-lived
emissive
probes,
the
use
of
phosphorescent
probes
conveys
advantage
long
signal
persistance
in
time
and
this
permits
one
discriminate
against
interference
from
autofluorescence.
However,
realization
room
temperature
phosphorescence
(RTP)
that
feature
ultralong
emission
lifetimes
aqueous
solution
is
still
a
challenge.
Here,
we
present
rational
strategy
for
realizing
RTP
air-saturated
media
carbon
dot-based
silica
composites
(CDs@SiO2)
which
as
1.64
s.
The
excellent
properties,
their
small
size,
water
solubility
make
CDs@SiO2
promising
material
biological
application.
We
demonstrate
efficient
reporters
both
plant
tissue
animal
cells
where
strong
autofluorescence
poses
severe
challenge
conventional,
short-lifetime
probes.
