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.
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(14), P. 8141 - 8149
Published: March 29, 2023
Lithium-sulfur
batteries
(LSBs)
have
been
considered
as
a
promising
candidate
for
next-generation
energy
storage
devices,
which
however
still
suffer
from
the
shuttle
effect
of
intermediate
lithium
polysulfides
(LiPSs).
Covalent-organic
frameworks
(COFs)
exhibited
great
potential
sulfur
hosts
LSBs
to
solve
such
problem.
Herein,
pentiptycene-based
D2h
symmetrical
octatopic
polyaldehyde,
6,13-dimethoxy-2,3,9,10,18,19,24,25-octa(4'-formylphenyl)pentiptycene
(DMOPTP),
was
prepared
and
utilized
building
block
toward
preparing
COFs.
Condensation
DMOPTP
with
4-connected
tetrakis(4-aminophenyl)methane
affords
an
expanded
[8
+
4]
connected
network
3D-flu-COF,
flu
topology.
The
non-interpenetrated
nature
topology
endows
3D-flu-COF
high
Brunauer-Emmett-Teller
surface
area
2860
m2
g-1,
large
octahedral
cavities,
cross-linked
tunnels
in
framework,
enabling
loading
capacity
(∼70
wt
%),
strong
LiPS
adsorption
capability,
facile
ion
diffusion.
Remarkably,
when
used
host
LSBs,
delivers
1249
mA
h
g-1
at
0.2
C
(1.0
=
1675
g-1),
outstanding
rate
capability
(764
5.0
C),
excellent
stability,
representing
one
best
results
among
thus
far
reported
COF-based
materials
being
competitive
state-of-the-art
inorganic
materials.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(40)
Published: June 26, 2023
Artificial
photosynthetic
diluted
CO2
reduction
directly
driven
by
natural
sunlight
is
a
challenging,
but
promising
way
to
realize
carbon-resources
recycling
utilization.
Herein,
three-in-one
photocatalytic
system
of
enrichment,
and
H2
O
oxidation
sites
designed
for
reduction.
A
Zn-Salen-based
covalent
organic
framework
(Zn-S-COF)
with
reductive
synthesized;
then,
ionic
liquids
(ILs)
are
loaded
into
the
pores.
As
result,
[Emim]BF4
@Zn-S-COF
shows
visible-light-driven
-to-CO
conversion
rate
105.88
µmol
g-1
h-1
under
(15%)
atmosphere,
even
superior
than
most
photocatalysts
in
high
concentrations
.
Moreover,
also
reaches
126.51
5
h.
Further
experiments
theoretical
calculations
reveal
that
triazine
ring
Zn-S-COF
promotes
activity
sites,
ILs
provide
an
enriched
realizing
efficient
Materials Chemistry Frontiers,
Journal Year:
2023,
Volume and Issue:
7(16), P. 3298 - 3331
Published: Jan. 1, 2023
This
review
provides
an
overview
of
the
recent
advances
in
heterogeneous
catalysis
using
COFs,
primarily
from
2020
to
2023,
covering
fundamentals,
advantages,
current
challenges,
and
future
perspectives.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(31)
Published: June 7, 2023
In
this
work,
we
innovatively
assembled
two
types
of
traditional
photosensitizers,
that
is
pyridine
ruthenium/ferrum
(Ru(bpy)32+
/Fe(bpy)32+
)
and
porphyrin/metalloporphyrin
complex
(2HPor/ZnPor)
by
covalent
linkage
to
get
a
series
dual
photosensitizer-based
three-dimensional
metal-covalent
organic
frameworks
(3D
MCOFs),
which
behaved
strong
visible
light-absorbing
ability,
efficient
electron
transfer
suitable
band
gap
for
highly
photocatalytic
hydrogen
(H2
evolution.
Rubpy-ZnPor
COF
achieved
the
highest
H2
yield
(30
338
μmol
g-1
h-1
with
apparent
quantum
efficiency
(AQE)
9.68
%@420
nm,
showed
one
best
performances
among
all
reported
based
photocatalysts.
Furthermore,
in
situ
produced
was
successfully
tandem
used
alkyne
hydrogenation
≈99.9
%
conversion
efficiency.
Theoretical
calculations
reveal
both
photosensitizer
units
MCOFs
can
be
photoexcited
thus
contribute
optimal
activity.
This
work
develops
general
strategy
shows
great
potential
using
multiple
photosensitive
materials
field
photocatalysis.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 10, 2024
Abstract
Covalent
organic
frameworks
(COFs)
attract
significant
attention
due
to
their
ordered,
crystalline,
porous,
metal‐free,
and
predictable
structures.
These
unique
characteristics
offer
great
opportunities
for
the
diffusion
transmission
of
photogenerated
charges
during
photocatalysis.
Currently,
a
considerable
number
COFs
are
used
as
metal‐free
semiconductor
photocatalysts.
This
review
aims
understand
relationships
between
structure
photocatalysis
performance
provides
in‐depth
insight
into
synthetic
strategy
improve
performance.
Subsequently,
focuses
on
structural
motif
in
sustainable
photocatalytic
hydrogen
evolution,
carbon
dioxide
reduction,
peroxide
generation,
compound
transformations.
Last,
conjunction
with
progress
achieved
challenges
yet
be
overcome,
candid
discussion
is
undertaken
regarding
field
COF
photocatalysis,
accompanied
by
presentation
potential
research
avenues
future
directions.
seeks
provide
readers
comprehensive
understanding
pivotal
role
robust
guidance
innovative
utilization
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Sept. 22, 2023
3D
ionic
covalent
organic
framework
(COF)
membranes,
which
are
envisioned
to
be
able
break
the
trade-off
between
ion
conductivity
and
selectivity,
waiting
for
exploitation.
Herein,
we
report
fabrication
of
a
sulfonic
acid-functionalized
COF
membrane
(3D
SCOF)
efficient
selective
transport,
using
dual
acid-mediated
interfacial
polymerization
strategy.
The
SCOF
membranes
possess
highly
interconnected
transport
channels,
ultramicroporous
pore
sizes
(0.97
nm),
abundant
sulfonate
groups
(with
high
exchange
capacity
4.1
mmol
g-1),
leading
proton
843
mS
cm-1
at
90
°C.
When
utilized
in
osmotic
energy
conversion,
power
density
21.2
W
m-2,
remarkable
selectivity
0.976
thus
an
exceptional
conversion
efficiency
45.3%
simultaneously
achieved.
This
work
provides
alternative
approach
promotes
applications
COFs
separation.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(11)
Published: Nov. 27, 2023
Abstract
Covalent
organic
frameworks
(COFs)
are
crystalline
porous
polymers
that
can
be
precisely
integrated
by
building
blocks
to
achieve
pre‐designed
composition,
components,
and
functions,
making
them
a
powerful
platform
for
the
development
of
molecular
devices
in
field
electrocatalysis.
The
precise
control
channel/dopant
positions
highly
ordered
network
structures
COFs
provide
an
ideal
material
system
applications
advanced
In
this
paper,
topological
structure
design
synthesis
methods
reviewed
detail,
their
principles
deeply
analyzed.
addition,
derivatives
electrocatalysis
systematically
summarized
optimization
strategies
proposed.
Finally,
application
prospects
challenges
may
encountered
future
prospected,
providing
helpful
guidance
research.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: May 19, 2023
Three-dimensional
(3D)
covalent
organic
frameworks
(COFs)
possess
higher
surface
areas,
more
abundant
pore
channels,
and
lower
density
compared
to
their
two-dimensional
counterparts
which
makes
the
development
of
3D
COFs
interesting
from
a
fundamental
practical
point
view.
However,
construction
highly
crystalline
COF
remains
challenging.
At
same
time,
choice
topologies
in
is
limited
by
crystallization
problem,
lack
availability
suitable
building
blocks
with
appropriate
reactivity
symmetries,
difficulties
structure
determination.
Herein,
we
report
two
pto
mhq-z
designed
rationally
selecting
rectangular-planar
trigonal-planar
conformational
strains.
The
show
large
size
46
Å
an
extremely
low
calculated
density.
net
topology
solely
constructed
totally
face-enclosed
polyhedra
displaying
precise
uniform
micropore
1.0
nm.
high
CO2
adsorption
capacity
at
room
temperature
can
potentially
serve
as
promising
carbon
capture
adsorbents.
This
work
expands
accessible
topologies,
enriching
structural
versatility
COFs.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(1)
Published: Oct. 2, 2023
Covalent
organic
frameworks
(COFs)
have
shown
great
advantages
as
photocatalysts
for
hydrogen
evolution.
However,
the
effect
of
linkage
geometry
and
type
on
extent
π-electron
conjugation
in
plane
framework
photocatalytic
properties
COFs
remains
a
significant
challenge.
Herein,
two
Kagome
(kgm)
topologic
oligo(phenylenevinylene)-based
are
designed
synthesized
boosting
evolution
via
"two
one"
strategy.
Under
visible
light
irradiation,
COF-954
with
5
wt%
Pt
cocatalyst
exhibits
high
rate
(HER)
137.23
mmol
g
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(28), P. 15473 - 15481
Published: July 8, 2023
Three-dimensional
covalent
organic
frameworks
(3D
COFs),
with
interconnected
pores
and
exposed
functional
groups,
provide
new
opportunities
for
the
design
of
advanced
materials
through
postsynthetic
modification.
Herein,
we
demonstrate
successful
annulation
3D
COFs
to
construct
efficient
CO2
reduction
photocatalysts.
Two
COFs,
NJU-318
NJU-319Fe,
were
initially
constructed
by
connecting
hexaphenyl-triphenylene
units
pyrene-
or
Fe-porphyrin-based
linkers.
Subsequently,
moieties
within
postsynthetically
transformed
into
π-conjugated
hexabenzo-trinaphthylene
(pNJU-318
pNJU-319Fe)
enhance
visible
light
absorption
photoreduction
activity.
The
optimized
photocatalyst,
pNJU-319Fe,
shows
a
CO
yield
688
μmol
g-1,
representing
2.5-fold
increase
compared
that
unmodified
NJU-319Fe.
Notably,
direct
synthesis
hexabenzo-trinaphthylene-based
COF
catalysts
was
unsuccessful
due
low
solubility
conjugated
This
study
not
only
provides
an
effective
method
photocatalysts
but
also
highlights
unlimited
tunability
structural