Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(22)
Published: April 2, 2024
Abstract
The
ion
extraction
and
electro/photo
catalysis
are
promising
methods
to
address
environmental
energy
issues.
Covalent
organic
frameworks
(COFs)
a
class
of
template
construct
absorbents
catalysts
because
their
stable
frameworks,
high
surface
areas,
controllable
pore
environments,
well‐defined
catalytic
sites.
Among
them,
ionic
COFs
as
unique
crystalline
porous
materials,
with
charges
in
the
or
along
walls,
have
shown
different
properties
resulting
performance
these
applications
those
from
charge‐neutral
COFs.
In
this
review,
current
research
progress
based
on
for
conversion,
including
cationic/anionic
materials
is
reviewed
terms
synthesis
strategy,
modification
methods,
mechanisms
adsorption
catalysis,
well
applications.
Finally,
we
demonstrated
challenges
future
development
design
strategies
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(5), P. 3248 - 3254
Published: Jan. 31, 2023
Benefiting
from
their
unique
structural
merits,
three-dimensional
(3D)
large-pore
COF
materials
demonstrate
high
surface
areas
and
interconnected
large
channels,
which
makes
these
promising
in
practical
applications.
Unfortunately,
functionalization
strategies
application
research
are
still
absent
structures.
To
this
end,
a
series
of
functional
3D
stp-topologized
COFs
designed
based
on
porphyrin
or
metalloporphyrin
moieties,
named
JUC-640-M
(M
=
Co,
Ni,
H).
Interestingly,
JUC-640-H
exhibits
record-breaking
low
crystal
density
(0.106
cm3
g-1)
among
all
crystalline
materials,
along
with
the
largest
pore
size
(4.6
nm)
COFs,
area
(2204
m2
g-1),
abundant
exposed
moieties
(0.845
mmol
g-1).
Inspired
by
characteristics
photoelectrical
performance,
JUC-640-Co
is
utilized
for
photoreduction
CO2
to
CO
demonstrates
production
rate
(15.1
g-1
h-1),
selectivity
(94.4%),
stability.
It
should
be
noted
that
has
exceeded
those
reported
COF-based
materials.
This
work
not
only
produces
novel
channels
but
also
provides
new
guidance
applications
COFs.
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(3), P. 1475 - 1496
Published: Jan. 16, 2023
Multicomponent
reactions
(MCRs)
combine
at
least
three
reactants
to
afford
the
desired
product
in
a
highly
atom-economic
way
and
are
therefore
viewed
as
efficient
one-pot
combinatorial
synthesis
tools
allowing
one
significantly
boost
molecular
complexity
diversity.
Nowadays,
MCRs
no
longer
confined
organic
have
found
applications
materials
chemistry.
In
particular,
can
be
used
prepare
covalent
frameworks
(COFs),
which
crystalline
porous
assembled
from
monomers
exhibit
broad
range
of
properties
applications.
This
synthetic
approach
retains
advantages
small-molecule
MCRs,
not
only
strengthening
skeletal
robustness
COFs,
but
also
providing
additional
driving
forces
for
their
crystallization,
has
been
series
robust
COFs
with
diverse
The
present
perspective
article
provides
general
background
discusses
types
employed
COF
date,
addresses
related
critical
challenges
future
perspectives
inspire
MCR-based
design
new
promote
further
progress
this
emerging
field.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(31)
Published: May 31, 2023
Covalent
organic
frameworks
(COFs),
possessing
pre-designable
structures
and
tailorable
functionalities,
are
promising
candidates
for
photocatalysis.
Nevertheless,
the
most
studied
imine-linked
COFs
(Im-COFs)
usually
suffer
from
unsatisfactory
stability
photocatalytic
performance.
To
meet
this
challenge,
a
series
of
highly
stable
enaminone-linked
(En-COFs)
have
been
synthesized
afford
much
improved
visible-light-driven
hydrogen
production
activities,
ranging
44
to
1078
times
that
isoreticular
Im-COFs,
with
only
difference
being
linkages
(enaminone
vs.
imine)
in
their
structures.
The
enhanced
light-harvesting
ability,
facilitated
exciton
dissociation
chemical
account
superior
activity.
Furthermore,
quinoline-linked
(Qu-COFs)
further
obtained
via
post-modification
Im-COFs.
Compared
activities
Qu-COFs
significantly
after
modification,
but
still
below
those
corresponding
En-COFs
(3-107
times).
facile
synthesis,
excellent
activity,
high
demonstrate
platform
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(32), P. 18148 - 18159
Published: Aug. 2, 2023
Efficient
transfer
of
charge
carriers
through
a
fast
transport
pathway
is
crucial
to
excellent
photocatalytic
reduction
performance
in
solar-driven
CO2
reduction,
but
it
still
challenging
effectively
modulate
the
electronic
between
photoactive
motifs
by
feasible
chemical
means.
In
this
work,
we
propose
thermally
induced
strategy
precisely
electron
formed
porphyrin
metal–organic
framework
using
thorium
ion
with
large
ionic
radius
and
high
coordination
number
as
coordination-labile
metal
node.
As
result,
stacking
pattern
molecules
before
after
crystal
transformations
has
changed
dramatically,
which
leads
significant
differences
separation
efficiency
photogenerated
MOFs.
The
rate
CO
IHEP-22(Co)
reaches
350.9
μmol·h–1·g–1,
3.60
times
that
IHEP-21(Co)
1.46
IHEP-23(Co).
Photoelectrochemical
characterizations
theoretical
calculations
suggest
channels
inhibit
recombination
carriers,
resulting
for
reduction.
interaction
mechanism
was
clarified
in-situ
paramagnetic
resonance,
diffuse
reflectance
infrared
Fourier
transform
spectroscopy,
extended
X-ray
absorption
fine
structure
calculations.
These
results
provide
new
method
regulate
efficient
migration
photocatalysts
will
be
helpful
guide
design
synthesis
superior
production
solar
fuels.
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.
Chemical Reviews,
Journal Year:
2023,
Volume and Issue:
123(23), P. 13489 - 13692
Published: Nov. 14, 2023
As
a
key
structural
parameter,
phase
depicts
the
arrangement
of
atoms
in
materials.
Normally,
nanomaterial
exists
its
thermodynamically
stable
crystal
phase.
With
development
nanotechnology,
nanomaterials
with
unconventional
phases,
which
rarely
exist
their
bulk
counterparts,
or
amorphous
have
been
prepared
using
carefully
controlled
reaction
conditions.
Together
these
methods
are
beginning
to
enable
engineering
(PEN),
i.e.,
synthesis
phases
and
transformation
between
different
obtain
desired
properties
functions.
This
Review
summarizes
research
progress
field
PEN.
First,
we
present
representative
strategies
for
direct
modulation
diverse
kinds
nanomaterials.
We
cover
ranging
from
metal
nanostructures
such
as
Au,
Ag,
Cu,
Pd,
Ru,
alloys;
oxides,
borides,
carbides;
transition
dichalcogenides
(TMDs)
2D
layered
review
growth
wet-chemical
reduction
seed-mediated
epitaxial
chemical
vapor
deposition
(CVD),
high
pressure
transformation,
electron
ion-beam
irradiation.
After
that,
summarize
significant
influence
on
various
unconventional-phase
also
discuss
potential
applications
developed
areas
including
catalysis,
electrochemical
energy
storage
(batteries
supercapacitors),
solar
cells,
optoelectronics,
sensing.
Finally,
existing
challenges
future
directions
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
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(16)
Published: Jan. 6, 2023
Macrocycles
with
well-defined
cavities
and
the
ability
to
undergo
supramolecular
interactions
are
classical
materials
that
have
played
an
essential
role
in
science.
However,
one
of
most
substantial
barriers
limiting
utilization
macrocycles
is
their
aggregation,
which
blocks
active
regions.
Among
many
attempted
strategies
prevent
such
installing
into
covalent
organic
frameworks
(COFs),
porous
stable
reticular
networks,
has
emerged
as
ideal
solution.
The
resulting
macrocycle-based
COFs
(M-COFs)
preserve
macrocycles'
unique
activities,
enabling
applications
various
fields
single-atom
catalysis,
adsorption/separation,
optoelectronics,
phototherapy,
structural
design
forming
single-layered
or
mechanically
interlocked
COFs.
properties
unmatchable
by
any
combination
other
substrates,
opening
a
new
chapter
advanced
materials.
This
review
focuses
on
latest
progress
concepts,
synthesis,
properties,
M-COFs,
presents
in-depth
outlook
challenges
opportunities
this
emerging
field.
