Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(20)
Published: March 21, 2024
Abstract
Memristors
are
essential
components
of
neuromorphic
systems
that
mimic
the
synaptic
plasticity
observed
in
biological
neurons.
In
this
study,
a
novel
approach
employing
one‐dimensional
covalent
organic
framework
(1D
COF)
films
was
explored
to
enhance
performance
memristors.
The
unique
structural
and
electronic
properties
two
1D
COF
(COF‐4,4′‐methylenedianiline
(MDA)
COF‐4,4′‐oxydianiline
(ODA))
offer
advantages
for
multilevel
resistive
switching,
which
is
key
feature
computing
applications.
By
further
introducing
TiO
2
layer
on
COF‐ODA
film,
built‐in
electric
field
between
COF‐TiO
interfaces
could
be
generated,
demonstrating
feasibility
utilizing
COFs
as
platform
constructing
memristors
with
tunable
states.
nanochannels
these
structures
contributed
efficient
modulation
electrical
conductance,
enabling
precise
control
over
weights
circuits.
This
study
also
investigated
potential
COF‐based
achieve
energy‐efficient
high‐density
memory
devices.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(46)
Published: Aug. 6, 2024
Abstract
Organic
memristors
based
on
covalent
organic
frameworks
(COFs)
exhibit
significant
potential
for
future
neuromorphic
computing
applications.
The
preparation
of
high‐quality
COF
nanosheets
through
appropriate
structural
design
and
building
block
selection
is
critical
the
enhancement
memristor
performance.
In
this
study,
a
novel
room‐temperature
single‐phase
method
was
used
to
synthesize
Ta−Cu
3
COF,
which
contains
two
redox‐active
units:
trinuclear
copper
triphenylamine.
resultant
were
dispersed
acid‐assisted
exfoliation
subsequently
spin‐coated
fabricate
film
an
indium
tin
oxide
(ITO)
substrate.
synergistic
effect
dual
centers
in
film,
combined
with
its
distinct
crystallinity,
significantly
reduces
redox
energy
barrier,
enabling
efficient
modulation
128
non‐volatile
conductive
states
Al/Ta−Cu
COF/ITO
memristor.
Utilizing
convolutional
neural
network
(CNN)
these
conductance
states,
image
recognition
ten
representative
campus
landmarks
successfully
executed,
achieving
high
accuracy
95.13
%
after
25
training
epochs.
Compared
devices
binary
exhibits
45.56
improvement
enhances
efficiency
computing.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(37), P. 49594 - 49601
Published: Sept. 4, 2024
Covalent
organic
framework
(COF)
film
with
electrofluorochromic
(EFC)
and
electrochromic
(EC)
properties
has
been
synthesized
by
using
triphenylamine-based
monomers.
The
exhibited
a
high
maximum
fluorescence
contrast
of
151
when
subjected
to
drive
voltage
0.75
V
vs
the
Ag/AgCl
electrode,
causing
be
quenched,
which
resulted
in
EFC
process's
"fluorescence
off"
state.
switching
times
for
on
off
states
were
0.51
7.79
s,
respectively.
Over
same
range,
COF
also
displayed
EC
properties,
achieving
50.23%
coloration
efficiency
297.4
cm
Chemistry - An Asian Journal,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 10, 2024
Abstract
Nanoscale
framework
materials
have
attracted
extensive
attention
due
to
their
diverse
morphology
and
good
properties,
synthesis
methods
of
different
size
structures
been
reported.
Therefore,
the
relationship
between
sizes
performance
has
become
a
research
hotspot.
This
paper
reviews
controllable
strategies
nano‐metal‐organic
frameworks
(nano‐MOFs)
nano‐covalent‐organic
(nano‐COFs).
Firstly,
synthetic
evolution
nano‐frame
is
summarized.
Due
special
surface
area,
regular
pores
adjustable
structural
functions,
much
attention.
Then
preparation
nanostructures
with
dimensions
are
introduced.
These
provide
basis
for
design
novel
energy
storage
catalytic
materials.
In
addition,
latest
advances
in
field
catalysis
reviewed,
emphasis
on
application
nano‐MOFs/COFs
zinc‐,
lithium‐,
sodium‐based
batteries,
as
well
supercapacitors.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(20)
Published: March 21, 2024
Abstract
Memristors
are
essential
components
of
neuromorphic
systems
that
mimic
the
synaptic
plasticity
observed
in
biological
neurons.
In
this
study,
a
novel
approach
employing
one‐dimensional
covalent
organic
framework
(1D
COF)
films
was
explored
to
enhance
performance
memristors.
The
unique
structural
and
electronic
properties
two
1D
COF
(COF‐4,4′‐methylenedianiline
(MDA)
COF‐4,4′‐oxydianiline
(ODA))
offer
advantages
for
multilevel
resistive
switching,
which
is
key
feature
computing
applications.
By
further
introducing
TiO
2
layer
on
COF‐ODA
film,
built‐in
electric
field
between
COF‐TiO
interfaces
could
be
generated,
demonstrating
feasibility
utilizing
COFs
as
platform
constructing
memristors
with
tunable
states.
nanochannels
these
structures
contributed
efficient
modulation
electrical
conductance,
enabling
precise
control
over
weights
circuits.
This
study
also
investigated
potential
COF‐based
achieve
energy‐efficient
high‐density
memory
devices.
