Chemical Engineering Journal,
Journal Year:
2023,
Volume and Issue:
479, P. 147680 - 147680
Published: Dec. 3, 2023
Solar
evaporation
provides
an
effective
solution
to
solve
the
scarcity
of
freshwater
resources.
Biomass-based
solar
evaporators
have
attracted
significant
interest,
because
their
environmental
safety.
However,
due
high
latent
heat
for
water,
most
biomass-based
exhibit
low
water
vapor
generation
rates.
In
this
work,
we
developed
a
wood-based
evaporator
(CDs-Wood)
by
just
one
step
in-situ
synthesis
carbon
dots
(CDs)
using
lignin
in
wood
as
source,
and
CDs-Wood
has
significantly
decreased
from
2257.5
J
g1
1003.8
g1,
which
resulted
rate
2.86
kg
m2
h1.
exhibits
extensive
optical
absorption
capacity
(95.3
%),
steam
conversion
efficiency
(80
adaptability
low-temperature
conditions,
excellent
salt
resistance.
This
work
efficient
potentially
scalable
designing
all-biomass-based
evaporators.
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.
Small,
Journal Year:
2022,
Volume and Issue:
19(31)
Published: Nov. 27, 2022
Multicolored
phosphorescent
materials
based
on
carbon
dots
(CDs)
constructed
using
the
same
or
similar
precursors
with
long
lifetimes
are
conducive
to
their
wide
range
of
practical
applications
due
developed
compatibility.
Herein,
a
universal
method
is
prepare
long-lived
multicolored
CD-based
composites
for
which
heavy-metal
doping
not
required.
The
CDs
encapsulated
in
silica
via
silane
hydrolysis,
forms
many
covalent
SiOC
and
SiC
bonds;
hence,
vibrations
rotations
luminescent
centers
CD
surfaces
hindered.
transformation
more
rigid
moiety
occurs
during
high-temperature
calcination.
Furthermore,
calcination,
collapses,
resulting
tightly
CDs.
synergistic
effect
these
two
calcination
phenomena
produces
blue,
green,
yellow,
red
phosphorescence,
at
wavelengths
spanning
465
680
nm
up
2.11
s.
Taking
advantage
superior
phosphorescence
performances,
successfully
applied
3D
multichannel
information
storage
encryption.
Chemical Science,
Journal Year:
2023,
Volume and Issue:
14(14), P. 3705 - 3729
Published: Jan. 1, 2023
Carbon
dot-based
room
temperature
phosphorescence
materials
are
reported,
mainly
focusing
on
the
outstanding
contributions
over
years,
emission,
lifetime,
preparation
and
application.
Small,
Journal Year:
2023,
Volume and Issue:
19(31)
Published: Jan. 6, 2023
Abstract
As
a
type
of
room
temperature
phosphorescence
(RTP)
material,
carbon
dots
(CDs)
always
show
short
lifetime
and
low
efficiency.
To
counter
these
disadvantages,
several
strategies,
such
as
embedding
in
rigid
matrix,
introducing
heteroatom,
crosslink‐enhanced
emission,
etc.,
are
well
developed.
Consequently,
lots
CDs‐based
RTP
materials
obtained.
Doping
CDs
into
various
matrix
is
the
dominant
method
for
preparation
long‐lived
so
far.
The
desired
CDs@matrix
composites
display
outstanding
performances.
Meanwhile,
matrix‐free
carbonized
polymer
dots‐based
also
widely
Amounts
possessing
ultra‐long
lived,
multiple
colored,
dynamic
emission
successfully
Herein,
recent
progress
achieved
corresponding
efficient
strategies
mechanisms
summarized
reviewed
detail.
Due
to
possess
excellent
chemical
stability,
photostability
biological
toxicity,
they
exhibit
great
application
potential
fields
anti‐counterfeiting,
data
encryption,
monitoring.
introduced
this
review.
promising
functional
development
long
wavelength
emitting
with
still
challengeable,
especially
red
near‐infrared
materials.
Small,
Journal Year:
2023,
Volume and Issue:
19(31)
Published: Feb. 21, 2023
Abstract
Carbon
dots
(CDs)
have
gradually
become
a
new
generation
of
nano‐luminescent
materials,
which
received
extensive
attention
due
to
excellent
optical
properties,
wide
source
raw
low
toxicity,
and
good
biocompatibility.
In
recent
years,
there
are
many
reports
on
the
luminescent
phenomenon
CDs,
great
progress
has
been
achieved.
However,there
rarely
systematic
summaries
CDs
with
persistent
luminescence.
Here,
summary
including
luminous
mechanism,
synthetic
strategies,
property
regulation,
potential
applications,
is
given.
First,
brief
introduction
given
development
materials.
Then,
mechanism
afterglow
from
room
temperature
phosphorescence
(RTP),
delayed
fluorescence
(DF),
long
luminescence
(LPL)
discussed.
Next,
constructed
methods
materials
summarized
two
aspects,
matrix‐free
self‐protected
matrix‐protected
CDs.
Moreover,
regulation
properties
color,
lifetime,
efficiency
presented.
Afterwards,
applications
such
as
anti‐counterfeiting,
information
encryption,
sensing,
bio‐imaging,
multicolor
display,
LED
devices,
etc.,
reviewed.
Finally,
an
outlook
proposed.
Small Structures,
Journal Year:
2023,
Volume and Issue:
4(5)
Published: Feb. 2, 2023
As
emerging
carbon‐based
nanomaterials,
carbon
dots
(CDs)
are
widely
studied
with
regard
to
their
luminescent
properties.
CDs
obtained
by
the
bottom‐up
method
exhibit
polymeric
characteristics
after
crosslinking,
polymerization,
and
incomplete
carbonization
processes,
herein
referred
as
carbonized
polymer
(CPDs).
In
recent
years,
large
progress
has
been
achieved
on
room‐temperature
phosphorescence
(RTP)
properties
of
CPDs.
The
developments
synthesis
strategies
for
RTP
CPD
materials
reviewed.
However,
less
attention
devoted
influence
structures
materials.
Polymer
a
common
feature
extensive
key
factors
facilitating
Herein,
effects
emission
self‐protective
matrix‐assisted
discussed.
It
is
considered
that
can
effectively
immobilize
subluminophores
protect
triplet
excited
states
facilitate
crosslink‐enhanced
(CEE)
effect
proposed
further
explain
materials,
which
provide
an
effective
strategy
Benefiting
from
CEE
effect,
efficient
be
applications
then
briefly
summarized.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(23)
Published: April 6, 2023
The
emergence
of
time-dependent
phosphorescence
color
(TDPC)
materials
has
taken
information
encryption
to
high-security
levels.
However,
due
the
only
path
exciton
transfer,
it
is
almost
impossible
obtain
TDPC
for
chromophores
with
a
single
emission
center.
Theoretically,
in
inorganic-organic
composites,
transfer
organic
depends
on
inorganic
structure.
Here,
we
assign
two
structural
effects
NaCl
by
metal
(Mg2+
or
Ca2+
Ba2+
)
doping,
which
triggers
performance
carbon
dots
(CDs)
resulting
material
used
multi-level
dynamic
3D
coding
achieve
encryption.
confinement
activates
green
CDs;
while
defect
tunneling-related
yellow
phosphorescence.
Such
simply
doped
matrices
can
be
synthesized
using
periodic
table
cations,
endowing
tremendous
control
over
properties.
This
demonstration
extends
design
view
luminescent
materials.
