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
Journal of the American Chemical Society,
Journal Year:
2019,
Volume and Issue:
141(43), P. 17431 - 17440
Published: Oct. 13, 2019
Fabricating
ultrathin
two-dimensional
(2D)
covalent
organic
framework
(COF)
nanosheets
(NSs)
in
large
scale
and
high
yield
still
remains
a
great
challenge.
This
limits
the
exploration
of
unique
functionalities
wide
range
application
potentials
such
materials.
Herein,
we
develop
scalable
general
bottom-up
approach
to
facilely
synthesize
(<2.1
nm)
imine-based
2D
COF
NSs
(including
COF-366
NSs,
COF-367
COF-367-Co
TAPB-PDA
TAPB-BPDA
NSs)
(>100
mg)
(>55%),
via
an
imine-exchange
synthesis
strategy
through
adding
excess
amounts
2,4,6-trimethylbenzaldehyde
into
reaction
system
under
solvothermal
conditions.
Impressively,
visualization
periodic
pore
lattice
for
by
scanning
tunneling
microscope
(STM)
clearly
discloses
nature.
In
particular,
isolated
are
subject
heterogeneous
photocatalyst
CO2-to-CO
conversion,
showing
excellent
efficiency
with
CO
production
rate
as
10
162
μmol
g-1
h-1
selectivity
ca.
78%
aqueous
media
visible-light
irradiation,
far
superior
corresponding
bulk
materials
comparable
thus
reported
state-of-the-art
driven
heterocatalysts.
Angewandte Chemie International Edition,
Journal Year:
2019,
Volume and Issue:
59(13), P. 5050 - 5091
Published: May 30, 2019
Abstract
A
new
approach
has
been
developed
to
design
organic
polymers
using
topology
diagrams.
This
strategy
enables
covalent
integration
of
units
into
ordered
topologies
and
creates
a
polymer
form,
that
is,
frameworks.
is
breakthrough
in
chemistry
because
it
sets
molecular
platform
for
synthesizing
with
predesignable
primary
high‐order
structures,
which
central
aim
over
century
but
unattainable
traditional
principles.
field
its
own
features
are
distinct
from
conventional
polymers.
Review
summarizes
the
fundamentals
as
well
major
progress
by
focusing
on
used
including
principles,
synthetic
strategies,
control
methods.
We
scrutinize
built‐in
functions
specific
structures
revealing
various
interplays
mechanisms
involved
expression
function.
propose
fundamental
issues
be
addressed
future
directions
physics,
materials,
application
perspectives.
Chemical Society Reviews,
Journal Year:
2019,
Volume and Issue:
48(14), P. 3811 - 3841
Published: Jan. 1, 2019
Ultrathin
metal/covalent–organic
framework
(MOF/COF)
membranes
have
attracted
increasing
research
interest
and
been
considered
as
state-of-the-art
platforms
applied
in
various
environment-
energy-related
separation/transportation
processes.
Chemical Society Reviews,
Journal Year:
2021,
Volume and Issue:
50(4), P. 2540 - 2581
Published: Jan. 1, 2021
The
recent
progress
made
on
porphyrin-based
frameworks
and
their
applications
in
energy-related
conversion
technologies
(e.g.,
ORR,
OER
CO2RR)
storage
Zn–air
batteries).
