Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 22, 2024
Abstract
Covalent
organic
framework
(COF)
membranes
feature
with
well‐developed
1D
in‐plane
pores
and
parallelly
arranged
2D
interlayer
gallery,
presenting
promising
platform
for
precise
separations.
However,
it
remains
a
formidable
challenge
to
construct
regulate
membrane
channels
at
angstrom
scale.
Herein,
pH‐sensitive
dopamine
is
taken
advantage
elaborately
engineer
the
spatial
size
of
1D/2D
in
COF
separations
alkali
metal
ions.
Acid
treatment
allows
monomolecular
segment
membrane,
achieving
ultramicroporous
regulation
from
1.25
nm
0.71
nm,
which
enables
high
selectivity
18.7
K
+
/Li
separation.
Molecular
dynamics
simulations
reveal
higher
dehydration
degree,
weaker
channel‐cation
interaction
faster
diffusion
coefficient
than
Li
.
For
alkaline
treatment,
self‐polymerizes
form
nanoparticles
between
layers,
enlarges
0.33
0.45
enabling
high‐permeance
ion/molecule
The
water
permeance
increases
86.7%
404
L
m
−2
h
−1
bar
,
without
sacrifice
sieving
ability.
Both
cation
separation
performances
outperform
current
state‐of‐the‐art
membranes.
This
dopamine‐mediated
channel
engineering
strategy
may
provide
new
insights
design
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 31, 2025
Abstract
The
advancement
of
nanofluidic
membranes
is
critical
for
mimicking
bioelectrogenic
ion‐channel
mechanisms
and
boosting
output
power
density,
essential
sustainable
energy
applications.
conversion
efficiency
these
devices
significantly
relies
on
the
ion
conductivity
permselectivity
membranes.
Membranes
with
aligned
one‐dimentional
(1D)
pores,
high
pore
organized
dangling
ionic
groups
are
theorized
to
offer
superior
permeability
selectivity,
yet
configurations
remain
underexplored.
Herein,
successful
fabrication
oriented
covalent
organic
framework
(COF)
presented.
These
exhibit
precisely
cationic
anionic
sites
within
their
channels,
achieved
through
post‐synthetic
modification
using
click
chemistry,
which
shows
conductivity.
When
incorporated
into
full‐cell
thermo‐osmotic
generators,
deliver
an
impressive
density
195
W
m
−2
under
a
50‐fold
salinity
gradient
(NaCl:
0.01
‖
0.5
)
along
35
K
temperature
differential.
This
substantially
increases
2.41
times
471
−2
when
enhanced
tenfold,
surpassing
performance
existing
similar
conditions
thus
offering
promising
avenue
enhancing
in
resource
utilization.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 14, 2025
Abstract
Lithium‐ion
batteries
(LIBs),
known
for
their
high
energy
density
and
long
cycle
life,
have
become
indispensable
in
everyday
applications.
Unfortunately,
the
increasing
demand
LIBs
raises
concerns
about
sustainability
of
lithium
resources.
Non‐lithium
metal‐ion
therefore
garnered
significant
attention
due
to
abundant
resources
potential
cost
advantages.
Yet,
widespread
adoption
is
hindered
by
limited
availability
high‐performance
cathode
materials.
Organic
electrode
materials
(OEMs)
emerged
as
promising
candidates,
owing
structural
diversity
tunability,
allowing
them
accommodate
large
cations.
Despite
potential,
most
OEMs
suffer
from
unsatisfactory
cyclability,
poor
rate
performance,
low
density.
This
review
summarizes
recent
advancements
improving
electrochemical
performance
OEMs,
focusing
on
molecular
engineering
approaches
mitigate
dissolution,
enhance
conductivity
The
charge
storage
mechanism
current
challenges
associated
with
are
first
discussed.
Various
strategies
designed
address
these
then
explored,
including
linkage
improve
stability
electronic
Finally,
insights
provided
future
development
next‐generation
battery
technologies
beyond
LIBs.
Accounts of Chemical Research,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 11, 2025
ConspectusMass
transport
is
fundamental
to
biological
systems
and
industrial
processes,
governing
chemical
reactions,
substance
exchange,
energy
conversion
across
various
material
scales.
In
systems,
ion
transport,
such
as
proton
migration
through
voltage-gated
channels,
regulates
cellular
potential,
signaling,
metabolic
balance.
transporting
molecules
solid,
liquid,
or
gas
phases
dictates
reactant
contact
diffusion
rates,
directly
impacting
reaction
efficiency
conversion.
Optimizing
these
processes
necessitates
the
design
of
efficient
interfaces
channels
enhance
mass
transport.Crystalline
porous
materials,
particularly
covalent
organic
frameworks
(COFs),
offer
an
excellent
platform
for
investigating
optimizing
transport.
With
ordered,
pre-engineered
nano-
subnanometer
pores,
COFs
enable
confined
garnered
significant
attention
conversion,
catalysis,
drug
delivery,
adsorption,
separation
applications.
Deeper
investigations
into
mechanism
in
at
molecular
level
are
crucial
advancing
materials
science,
chemistry,
engineering.Our
group
focuses
on
explore
multisubstance
cooperative
mechanisms
structure-activity
relationships
ions,
water,
gases.
We
have
expanded
linker
chemistry
by
developing
irreversible
α-aminoketone-linked
introducing
Suzuki
coupling
COF
preparation.
proposed
strategies
side-chain-induced
dipole-facilitated
stacking
prenucleation
slow
growth
achieve
record
large
pore
sizes
highly
oriented
nanochannels.
implemented
exfoliation
interwoven
strategy
accelerate
complex
interfaces,
refined
permeability
sieve-based
membranes
precise
size
engineering,
elucidated
effects
hydrophobicity/hydrophilicity
water
phase
transition
diffusion.
Building
insights,
we
designed
novel
open
framework
ionomers
tailor
microenvironment
electrocatalytic
uncovered
multiple
mechanisms.
The
synergistically
enhanced
three-phase
effectively
modulates
electrochemical
CO2
reduction
pathway
significantly
boosts
power
density
proton-exchange
membrane
fuel
cells
(PEMFCs).In
this
Account,
summarize
recent
advances
COF-based
emphasizing
nanochannel
construction
strategies,
including
linkage,
size,
orientation,
function
gradient
modulations.
discuss
functional
COFs,
correlations
between
structure
properties,
their
applications
separation,
storage,
catalysis.
Finally,
outline
current
challenges
future
opportunities
synthetic
mechanisms,
By
understanding
phenomena
from
microscopic
particles
macroscopic
scales,
Account
aims
provide
aligning
with
offering
insights
catalytic
performance.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 20, 2024
The
assessment
of
the
photoconductivity
Donor-Acceptor
(D-A)
ordered
bulk
heterojunctions
is
gaining
attention
for
development
innovative
organic
semiconductors
in
optoelectronics.
Here,
synthesis
pyrene-based
(D)
Covalent
Organic
Frameworks,
achieve
through
a
multivariate
reaction
involving
two
distinct
acceptors
reported
(A).
products
are
characterized
using
powder
x-ray
diffraction,
N
ACS Applied Energy Materials,
Journal Year:
2024,
Volume and Issue:
8(1), P. 569 - 580
Published: Dec. 18, 2024
Solid-state
batteries
utilizing
sodium
or
potassium
ions
(Na-
K-ion)
have
emerged
as
promising
alternatives
to
costly
lithium-ion
(Li-ion)
batteries,
offering
a
safer,
more
cost-effective,
and
sustainable
solution
for
energy
storage.
Nonetheless,
the
practical
application
of
these
is
hindered
by
significant
challenge:
low
ionic
conductivity
most
SEs
designed
Na-
K-ion.
Addressing
this
challenge,
researchers
turned
covalent
organic
frameworks
(COFs),
category
porous
polymers
characterized
their
highly
ordered
network
structures.
These
structures
can
lower
barrier
ion
migration,
thereby
rapid
pathways
ions,
making
COFs
candidates
conductors.
Sulfonated
cyanurate-linked
specifically
conduction
(named
i-COF-1
(Na)
(K)),
were
synthesized
through
straightforward,
one-step
process
using
affordable
starting
materials.
Remarkably,
demonstrate
high
at
room
temperature─1.62
×
10–4
S
cm–1
1.15
(K)─without
need
additional
salt
solvent.
This
enhanced
performance,
including
activation
energies
0.221
eV
0.273
(K),
attributed
strategic
incorporation
sulfonate
groups
directional
channels
within
COF
structure.
The
Na+
K+
conductivities,
cost,
intrinsic
framework
stability
provide
SE
candidate
exploration
next
generation
non-Lithium-ion
secondary
batteries.
