Science Advances,
Journal Year:
2021,
Volume and Issue:
7(13)
Published: March 24, 2021
The
weak
interlamellar
interaction
of
covalent
organic
framework
(COF)
nanocrystals
inhibit
the
construction
highly
efficient
ion/molecular
sieving
membranes
owing
to
inferior
contaminant
selectivity
induced
by
defects
in
stacked
COF
and
stability
issues.
Here,
a
facile
situ
molecularly
soldered
strategy
was
developed
fabricate
defect-free
ultrathin
with
precise
abilities
using
typical
chemical
environment
for
condensation
polymerization
dopamine
self-polymerization.
experimental
data
density
functional
theory
simulations
proved
that
reactive
oxygen
species
generated
during
catalyze
nucleophilic
reactions
COF,
thus
facilitating
counter-diffusion
growth
thin
layers.
Notably,
can
eliminate
soldering
crystals,
fortifying
mechanical
properties
membranes.
exhibited
ultrafast
precision
molecular
separation
ion
removal
both
aqueous
solvents,
which
surpasses
state-of-the-art
Chemical Reviews,
Journal Year:
2020,
Volume and Issue:
120(16), P. 8814 - 8933
Published: Jan. 22, 2020
Covalent
organic
frameworks
(COFs)
are
a
class
of
crystalline
porous
polymers
with
permanent
porosity
and
highly
ordered
structures.
Unlike
other
polymers,
significant
feature
COFs
is
that
they
structurally
predesignable,
synthetically
controllable,
functionally
manageable.
In
principle,
the
topological
design
diagram
offers
geometric
guidance
for
structural
tiling
extended
polygons,
polycondensation
reactions
provide
synthetic
ways
to
construct
predesigned
primary
high-order
Progress
over
past
decade
in
chemistry
these
two
aspects
undoubtedly
established
base
COF
field.
By
virtue
availability
units
diversity
topologies
linkages,
have
emerged
as
new
field
materials
offer
powerful
molecular
platform
complex
tailor-made
functional
development.
Here
we
target
comprehensive
review
field,
historic
overview
survey
advances
topology
reactions,
illustrate
features
diversities,
scrutinize
development
potential
various
functions
through
elucidating
structure–function
correlations
based
on
interactions
photons,
electrons,
holes,
spins,
ions,
molecules,
discuss
key
fundamental
challenging
issues
need
be
addressed,
predict
future
directions
from
chemistry,
physics,
perspectives.
Chemical Society Reviews,
Journal Year:
2019,
Volume and Issue:
48(10), P. 2665 - 2681
Published: Jan. 1, 2019
Covalent
organic
frameworks
(COFs),
which
are
constructed
from
linkers,
a
new
class
of
crystalline
porous
materials
comprising
periodically
extended
and
covalently
bound
network
structures.
The
intrinsic
structures
the
tailorable
linkers
endow
COFs
with
low
density,
large
surface
area,
tunable
pore
size
structure,
facilely-tailored
functionality,
attracting
increasing
interests
in
different
fields
including
membrane
separations.
Exciting
research
activities
ranging
fabrication
strategies
to
separation
applications
COF-based
membranes
have
appeared.
This
review
analyzes
synthesis
diverse
continuous/discontinuous
COF
membranes,
such
as
mixed
matrix
(MMMs),
thin
film
nanocomposite
(TFN)
free-standing
films.
Special
attention
was
given
size,
stability,
hydrophilicity/hydrophobicity
charge
view
determining
proper
for
fabrication,
along
approaches
fabricate
blending,
situ
growth,
layer-by-layer
stacking
interfacial
polymerization
(IP).
Moreover,
gas
separation,
water
treatment
(deaslination
dye
removal),
solvent
nanofiltration
(OSN),
pervaporation
fuel
cell
disscussed.
Finally,
we
illustrate
advantages
disadvantages
through
comparison
MOF-based
remaining
challenges
future
opportunities
this
field.
Chemical Society Reviews,
Journal Year:
2020,
Volume and Issue:
49(12), P. 4135 - 4165
Published: Jan. 1, 2020
In
the
light
of
increasing
energy
demand
and
environmental
pollution,
it
is
urgently
required
to
find
a
clean
renewable
source.
these
years,
photocatalysis
that
uses
solar
for
either
fuel
production,
such
as
hydrogen
evolution
hydrocarbon
or
pollutant
degradation,
has
shown
great
potential
achieve
this
goal.
Among
various
photocatalysts,
covalent
organic
frameworks
(COFs)
are
very
attractive
due
their
excellent
structural
regularity,
robust
framework,
inherent
porosity
good
activity.
Thus,
many
studies
have
been
carried
out
investigate
photocatalytic
performance
COFs
COF-based
photocatalysts.
critical
review,
recent
progress
advances
COF
photocatalysts
thoroughly
presented.
Furthermore,
diverse
linkers
between
building
blocks
boron-containing
connections
nitrogen-containing
summarised
compared.
The
morphologies
several
commonly
used
strategies
pertaining
activity
also
discussed.
Following
this,
applications
detailed
including
evolution,
CO2
conversion
degradation
contaminants.
Finally,
summary
perspective
on
opportunities
challenges
future
development
given.
Chemical Society Reviews,
Journal Year:
2020,
Volume and Issue:
49(11), P. 3565 - 3604
Published: Jan. 1, 2020
The
current
advances,
structure-property
relationship
and
future
perspectives
in
covalent
organic
frameworks
(COFs)
their
nanosheets
for
electrochemical
energy
storage
(EES)
conversion
(EEC)
are
summarized.
Chemical Society Reviews,
Journal Year:
2021,
Volume and Issue:
50(12), P. 6871 - 6913
Published: Jan. 1, 2021
This
review
article
summarizes
the
design
principles
and
strategies
for
synthesis
of
functional
COFs,
with
a
special
focus
on
their
potential
electrochemical
applications.
