ACS Materials Letters,
Journal Year:
2024,
Volume and Issue:
7(1), P. 172 - 180
Published: Dec. 9, 2024
Proton
transport
via
a
dynamic
chemistry
method
is
an
essential
pathway
in
both
biology
and
chemistry.
In
chemical
catalysis,
proton-shuttling
catalysts
were
developed
by
mimicking
the
proton-transport
processes
biological
systems.
However,
YH
(Y
=
O,
N,
S,
etc.)
units
are
typically
for
enabling
proton
these
catalysts.
Herein,
we
present
novel
strategy
constructing
situ
reversible
covalent
organic
framework
catalysts,
avoiding
need
Y–H
functional
groups.
Specifically,
demonstrate
that
2D
bis(imino)pyridine
Cu-bipy-COF
material
could
transform
to
water
catalyst
using
interconversion
between
imine
hemiamine.
This
effectively
catalyze
hydration
of
benzonitrile
neat
without
use
toxic
solvent.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 2, 2025
Furthering
the
field
of
synthetic
organic
chemistry
from
discrete
molecules
regime
to
extended
structure
regime,
covalent
frameworks
(COFs)
represent
a
new
genre
crystalline
porous
materials
featuring
designability
with
molecular-level
precision,
well-defined
porosity,
and
exceptional
stability
imparted
by
robust
linkages
reticulating
molecules.
The
topology
COFs
is
principal
feature
that
regulates
their
functionality
usability
for
emerging
technologies.
Profound
comprehension
network
topologies
maneuvering
them
toward
targeted
applications
are
crucial
advancing
realm
COF
research
developing
novel
functional
exciting
breakthroughs.
In
this
Perspective,
we
discuss
recent
pursuits
contributing
discovery
highly
connected
nets
having
topologies,
assess
key
challenges
achieving
such
offer
insights
into
current
scenario
future
directions.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 12, 2025
To
surmount
the
shortcomings
of
powder-based
catalysts
and
small
electrode
sizes,
development
meter-scale
integrated
materials
is
essential
for
practical
electrocatalytic
applications,
which
requires
fine
control
over
effective
surface
grafting
catalytic
active
sites
on
large-size
electrodes
as
well
addressing
challenge
balancing
cost-effective
large-scale
manufacturing
with
highly
stable
operation.
Herein,
we
report
a
low-cost,
facile,
scalable
method
directly
constructing
single-molecule-integrated
using
commercially
available,
flexible,
size-tailored
conductive
carbon
textiles
(e.g.,
graphite
felt)
well-defined
planar
conjugated
molecules
metallophthalocyanines)
via
heterostacking
steered
cross-scale
heterointerfacial
assembly.
This
universal
unlocks
limitations
traditional
approaches
that
involve
integrating
catalysts,
particles,
binders
Nafion),
supported
paper)
through
multiple
processing
steps
typically
result
in
centimeter-level
electrodes.
Meaningfully,
our
enables
precise
size,
composition,
microenvironment,
structure
to
match
various
environments.
As
proof
concept,
an
thiophene-gilded
cobalt
phthalocyanine
demonstrates
outstanding
activity
stability
CO2
electroconversion
alkaline,
neutral,
acidic
media
under
industrially
relevant
current
densities,
even
flowing
paired-electrolysis
system.
study
provides
comprehensive
scientific
data
engineering
guidance
systematic
design
scalable,
binder-free
electrodes,
thereby
promising
drive
sustainable
energy-efficient
electrolysis
industrial
scene.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(47), P. 32161 - 32205
Published: Nov. 18, 2024
Covalent
organic
frameworks
(COFs)
are
created
by
the
condensation
of
molecular
building
blocks
and
nodes
to
form
two-dimensional
(2D)
or
three-dimensional
(3D)
crystalline
frameworks.
The
diversity
with
different
properties
functionalities
large
number
possible
framework
topologies
open
a
vast
space
well-defined
porous
architectures.
Besides
more
classical
applications
materials
such
as
absorption,
separation,
catalytic
conversions,
interest
in
optoelectronic
COFs
has
recently
increased
considerably.
electronic
both
their
linkage
chemistry
can
be
controlled
tune
photon
absorption
emission,
create
excitons
charge
carriers,
use
these
carriers
photocatalysis,
luminescence,
chemical
sensing,
photovoltaics.
In
this
Perspective,
we
will
discuss
relationship
between
structural
features
properties,
starting
connectivity,
layer
stacking
2D
COFs,
control
over
defects
morphology
including
thin
film
synthesis,
exploring
theoretical
modeling
structural,
electronic,
dynamic
discussing
recent
intriguing
focus
on
photocatalysis
photoelectrochemistry.
We
conclude
some
remarks
about
present
challenges
future
prospects
powerful
architectural
paradigm.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 8, 2025
The
diversity
of
covalent
organic
frameworks
(COFs)
is
continuously
expanding,
providing
various
materials
with
tailor-made
structures
and
properties.
However,
the
development
crystalline
three-dimensional
(3D)
COFs
new
topologies
an
essential
but
arduous
challenge.
In
this
study,
we
first
developed
one
kind
3D
lil
topological
structure,
which
were
assembled
by
D4h-
C2h-symmetric
building
blocks.
determined
in
a
space
group
Imma,
each
D4h-symmetric
unit
connected
four
units,
forming
noninterpenetrated
network.
densely
packed
copper
phthalocyanine
stable
polyimide
linkage
render
these
as
polymeric
material
high
dielectric
constant
low
loss
at
frequencies
(>1
kHz).
Significantly,
was
63,
constitutes
record
value
among
phthalocyanine-based
polymers.
Therefore,
study
not
only
provides
important
guidance
for
design
lil-net
also
supplies
promising
application
high-energy-density
pulsed
capacitors.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(47), P. 32640 - 32650
Published: Nov. 15, 2024
Covalent
organic
frameworks
(COFs)
can
be
developed
for
molecular
confinement
and
separation.
However,
their
proximate
π
stacks
limit
the
interlayer
distance
to
only
3-6
Å,
which
is
too
small
guests
enter.
As
a
result,
COFs
block
access
ChemistrySelect,
Journal Year:
2025,
Volume and Issue:
10(14)
Published: April 1, 2025
Abstract
Covalent
organic
frameworks
(COFs)
as
a
new
type
of
crystalline
porous
material
with
tunable
structures
are
widely
used
in
the
field
photocatalytic
hydrogen
evolution
(PHE)
due
to
their
large
specific
surface
area
and
abundant
active
sites.
However,
electron‐hole
recombination
during
reaction
process
hinders
progress
reaction.
Donor–acceptor
(D–A)
COFs
can
effectively
promote
charge
carrier
transport
enhance
light
harvesting
capability
by
introducing
D
units
A
into
framework.
The
D–A
have
unique
advantages
PHE.
This
concept
review
concentrates
on
recent
developments
for
PHE
necessary
modules
constructing
COFs.
Moreover,
it
summarizes
challenges
faced
development
directions
future.
