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.
In
modern
computing,
the
Von
Neumann
architecture
faces
challenges
such
as
memory
bottleneck,
hindering
efficient
processing
of
large
datasets
and
concurrent
programs.
Neuromorphic
inspired
by
brain's
architecture,
emerges
a
promising
alternative,
offering
unparalleled
computational
power
while
consuming
less
energy.
Artificial
synaptic
devices
play
crucial
role
in
this
paradigm
shift.
Various
material
systems,
from
organic
to
inorganic,
have
been
explored
for
neuromorphic
devices,
with
materials
attracting
attention
their
excellent
photoelectric
properties,
diverse
choices,
versatile
preparation
methods.
Organic
semiconductors,
particular,
offer
advantages
over
transition-metal
dichalcogenides,
including
ease
flexibility,
making
them
suitable
large-area
films.
This
review
focuses
on
emerging
artificial
based
discussing
different
branches
within
semiconductor
system,
various
fabrication
methods,
device
structure
designs,
applications
synapse.
Critical
considerations
achieving
truly
human-like
dynamic
perception
systems
semiconductors
are
also
outlined,
reflecting
ongoing
evolution
computing.
Small Methods,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 10, 2025
Abstract
Two‐dimensional
covalent
organic
frameworks
(2D
COFs)
are
crystalline
porous
materials
with
predesignable
topologies,
periodic
structures,
and
tunable
functionalities
constructed
from
molecular
building
blocks
through
bonds.
Their
modular
design
allows
for
the
integration
of
various
functionalities,
making
2D
COFs
highly
suitable
optoelectronic
applications.
COF
films
have
emerged
to
integrate
into
devices,
avoiding
low
dispersibility
poor
processability
powder
materials.
Interfacial
polymerization
is
a
blooming
method
fabricate
at
liquid‐solid,
liquid‐liquid,
water‐air,
solid‐gas
interfaces.
Obtaining
high‐quality
key
exploring
their
performance
in
electronics.
This
review
first
discussed
synthetic
strategies
constructing
oriented
by
interfacial
polymerization,
including
general
nucleation‐growth
process,
field‐induced
assembly
nucleation‐growth,
other
methods.
The
applications
electronic
devices
reviewed,
photodetectors,
transistors,
electrochromic
resistive
memory,
neuromorphic
devices.
Finally,
challenges
perspectives
synthesizing
outlined.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 5, 2025
Abstract
2D
covalent
organic
frameworks
(2D‐COFs)
have
the
potential
to
be
employed
as
photoelectric
active
layers
due
high
crystallinity,
structural
tunability,
and
their
graphene‐like
layered
features.
However,
photosensors
based
on
2D‐COFs
with
near‐infrared
(NIR)
visual
adaptation
flexibility
remain
challenges
in
this
field.
In
study,
a
donor–acceptor
2D‐COF
film
is
synthesized
via
liquid‐liquid
interfacial
polymerization
reaction,
exhibiting
broad‐spectrum
light
absorption
properties
even
spanning
NIR.
Moreover,
as‐prepared
bionic
devices
demonstrate
photonic
adaptive
behavior
excellent
intensity
voltage
dependences,
which
can
successfully
applied
wireless
optical
communications.
This
TpDPP‐Py
(TpDPP:
5,5′‐(2,5‐bis(2‐ethylhexyl)‐3,6‐dioxo‐2,3,5,6‐tetrahydropyrrolo
[3,4‐c]pyrrole‐1,4‐diyl)bis(thiophene‐2‐carbaldehyde),
Py:
1,3,6,8‐tetrakis(4‐aminophenyl)pyrene)
COF
will
largely
promote
development
of
NIR
neuromorphic
optoelectronics,
thus
expanding
applications
sustainable
portable
flexible
film.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(13), P. 3168 - 3168
Published: July 3, 2024
Nanoscale
science
is
becoming
increasingly
important
and
prominent,
further
development
will
necessitate
integration
with
other
material
chemistries.
In
words,
it
involves
the
construction
of
a
methodology
to
build
up
materials
based
on
nanoscale
knowledge.
This
also
beginning
concept
post-nanotechnology.
role
belongs
nanoarchitectonics,
which
has
been
rapidly
developing
in
recent
years.
However,
scope
application
nanoarchitectonics
wide,
somewhat
difficult
compile
everything.
Therefore,
this
review
article
introduce
concepts
liquid
interface,
are
keywords
for
organization
functional
systems
biological
systems.
The
target
interfaces
liquid-liquid
liquid-solid
so
on.
Recent
examples
summarized
under
categories
molecular
assembly,
metal-organic
framework
covalent
organic
framework,
living
cell.
addition,
latest
research
interfacial
semiconductor
film
discussed.
final
conclusive
section
summarizes
these
features
discusses
necessary
components
nanoarchitectonics.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 23, 2024
Abstract
Metal‐organic
frameworks
(MOFs)
hold
significant
promise
in
the
realm
of
gas
sensing.
However,
current
understanding
their
sensing
mechanisms
remains
limited.
Furthermore,
large‐scale
fabrication
MOFs
is
hampered
by
inadequate
mechanical
properties.
These
two
challenges
contribute
to
sluggish
development
MOF‐based
gas‐sensing
materials.
In
this
review,
selection
metal
ions
and
organic
ligands
for
designing
first
presented,
deepening
interactions
between
different
ions/organic
target
gases.
Subsequently,
typical
interfacial
synthesis
strategies
(gas‐solid,
gas‐liquid,
solid‐liquid
interfaces)
are
provided,
highlighting
potential
constructing
MOF
membranes
on
superhydrophobic
and/or
superhydrophilic
substrates.
Then,
a
multi‐scale
structure
design
proposed,
including
multi‐dimensional
membrane
heterogeneous
design,
improve
performance
through
enhanced
mass
transfer
specific
sieving.
This
strategy
anticipated
augment
task‐specific
capabilities
materials
complex
environments.
Finally,
several
key
future
research
directions
outlined
with
aim
not
only
further
investigate
underlying
principles
but
also
achieve
efficient
detection
gases
amidst
interfering
elevated
moisture
levels.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Dec. 2, 2024
Synthesizing
high-crystalline
covalent
organic
framework
films
is
highly
desired
to
advance
their
applications
in
two-dimensional
optoelectronics,
but
it
remains
a
great
challenge.
Here,
we
report
diffusion-limited
synthesis
strategy
for
wafer-scale
uniform
films,
which
pre-deposited
4,4′,4″,4‴-(1,3,6,8-Tetrakis(4-aminophenyl)
pyrene
encapsulated
on
substrate
surface
with
layer
of
prepolymer.
The
polymer
not
only
prevents
the
dissolution
precursor,
limits
reaction
terephthalaldehyde
dissolved
solution,
thereby
regulating
polymerization
process.
size
depends
growth
substrates,
and
4-inch
have
been
synthesized
silicon
chips.
Their
structure,
thickness,
patterning
crystallization
degree
can
be
controlled
by
adjusting
building
blocks
chemistries,
molybdenum
disulfide
used
as
substrates
construct
vertical
heterostructure.
measurements
reveal
that
using
photosensitive
layer,
heterojunction
displays
enhanced
photoelectric
performance,
simulate
adaptative
function
visual
system.
preparation
high
quality
crystalline
(COF)
without
contamination
controllable
thickness
desirable
optoelectronic
applications.
authors
COF
patterning,
based
adjustment
precursor
block
films.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(36), P. 48438 - 48447
Published: Aug. 7, 2024
Utilizing
softly
confined
self-assembly
at
the
water
surface
represents
a
promising
approach
for
fabrication
of
two-dimensional
molecular
monolayers
(2D
MMs),
which
have
predominantly
been
concentrated
on
amphiphilic
organic
compounds
before.
Herein,
we
introduce
straightforward
method
termed
"water
surface-assisted
deposition
(WSAMD)"
to
organize
nonamphiphilic
molecules
into
dense
with
high
reproducibility.
To
underscore
versatility
and
merit
this
methodology
in
field
supramolecular
electronics,
successfully
fabricated
range
defect-free,
uniform
semiconducting
polymer
monolayers,
featuring
thickness
reflective
architectures.
The
charge
carrier
mobility
could
reach
0.05
cm
Journal of Polymer Science,
Journal Year:
2024,
Volume and Issue:
62(19), P. 4527 - 4537
Published: July 17, 2024
Abstract
In
this
work,
two
novel
pyrimidine‐cored
covalent
organic
frameworks
TpTap‐COF
and
TpTan‐COF
were
synthesized
for
the
first
time
used
adsorption
of
heavy
metal
ions
in
aqueous
solution.
Both
COFs
are
nanofiber
clusters
with
preferable
crystallinity
thermal
stability.
The
impact
parameters
such
as
pH
value,
shaking
time,
initial
concentration,
temperature
studied
by
batch
experiments
multi‐metal
system.
six
onto
follows
pseudo‐second‐order
kinetic
model
Freundlich
isotherm
model,
which
is
a
chemical
process
that
occurs
on
non‐uniform
surfaces.
rate
determined
both
film
diffusion
intraparticle
diffusion.
Further
research
copper
indicates
formation
complexes
between
O#N#N/O#O
chelating
sites
COF
skeleton
Cu
through
sharing
lone
pair
electrons.
