Construction of Metal‐Covalent Organic Frameworks with Trinuclear Copper Cluster for Efficient Triboelectric Nanogenerators
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 22, 2025
Abstract
Metal‐cluster‐based
covalent
organic
frameworks
(MCOFs),
obtained
through
connections
between
metal
clusters
and
molecules,
have
shown
considerable
promise
in
many
applications.
However,
MCOFs
rarely
been
employed
as
triboelectric
materials
nanogenerators
(TENGs),
their
corresponding
effect
on
the
output
has
not
systematically
elucidated.
Here,
for
first
time,
a
set
of
(Cu
3
‐S‐MCOF,
Cu
‐M‐MCOF,
‐L‐MCOF)
having
similar
skeletons
but
different
pore
spaces
(2.1,
3.4,
4.2
nm)
are
synthesized
using
copper‐cyclic
trinuclear
units.
All
utilized
fillers
methyl
cellulose
(MC)
matrix
to
prepare
series
films
layers
TENGs.
Kelvin
probe
force
microscopy
(KPFM)
showed
that
surface
charge
density
fabricated
can
be
precisely
altered
based
MCOFs.
The
mixing
ratio
MC
is
optimized
boost
outputs
A
very
high
current
voltage
up
54.8
µA
532.9
V,
respectively,
at
5
Hz
from
TENG
with
10wt%Cu
‐M‐MCOF@MC,
which
further
sensor
monitor
human
motions.
This
study
provides
new
insights
into
investigation
MCOF
tunable
functionality
achieve
high‐performance
devices.
Язык: Английский
Solid‐State Photoluminescent Imine‐Linked Two‐Dimensional Covalent Organic Frameworks
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 1, 2025
Abstract
The
development
of
efficient
solid‐state
luminescent
covalent
organic
frameworks
(COFs)
is
crucial
for
advancing
applications
in
sensing,
imaging,
and
optoelectronics.
However,
achieving
high
photoluminescent
quantum
yields
(PLQY)
imine‐linked
COFs
remains
challenging
due
to
the
presence
complex
nonradiative
quenching
pathways.
Here,
design
synthesis
a
novel
series
2D
(2D
COFs)
are
reported
through
condensation
rigid
building
blocks.
These
display
crystallinity
porosity,
with
remarkable
PLQY
up
39%
solid
state.
efficiency
attributed
donor–acceptor–donor
structure
within
aldehyde
moieties,
which
facilitates
selective
charge
transfer
excitation
between
donor
moiety,
triphenylamine,
acceptor
benzothiadiazole,
bypassing
imine
bonds,
suppressing
pathways
associated
bond
rotation
excited
states.
Furthermore,
obtained
COF
shows
potential
bioimaging
applications.
Язык: Английский