Angewandte Chemie International Edition,
Journal Year:
2018,
Volume and Issue:
58(5), P. 1376 - 1381
Published: Dec. 6, 2018
Synthesis
of
free-standing
two-dimensional
(2D)
conjugated
covalent
organic
framework
(COF)
films
linked
by
C-C
bonds
is
highly
desirable.
Now
a
very
simple
and
mild
strategy
has
been
developed
to
synthesize
them
Suzuki
polymerization
on
water-toluene
interface
in
refrigerator.
The
versatility
this
was
confirmed
the
successful
synthesis
two
different
2D-COF
films:
porous
graphene
porphyrin-contained
2D-COF.
Both
have
large
lateral
size
their
crystalline
domains
were
visualized
high
resolution
TEM.
Based
wide
compatibility
reaction,
our
breakthrough
work
opened
door
for
various
2D
COF
films.
For
application
studies,
exhibits
good
carrier
mobility,
which
much
higher
than
-C=N-
catalytic
activity
hydrogen
evolution
comparable
with
nitrogen-
or
phosphorus-doped
graphene.
Journal of the American Chemical Society,
Journal Year:
2018,
Volume and Issue:
140(13), P. 4623 - 4631
Published: March 27, 2018
The
structural
uniqueness
of
covalent
organic
frameworks
(COFs)
has
brought
these
new
materials
great
potential
for
advanced
applications.
One
the
key
aspects
yet
to
be
developed
is
how
improve
robustness
covalently
linked
reticular
frameworks.
In
order
make
best
use
π-conjugated
structures,
we
develop
herein
a
"killing
two
birds
with
one
stone"
strategy
and
construct
series
ultrastable
benzoxazole-based
COFs
(denoted
as
LZU-190,
LZU-191,
LZU-192)
metal-free
photocatalysts.
Benefiting
from
formation
benzoxazole
rings
through
reversible/irreversible
cascade
reactions,
synthesized
exhibit
permanent
stability
in
presence
strong
acid
(9
M
HCl),
base
NaOH),
sunlight.
Meanwhile,
reticulation
moiety
into
COF
decreases
optical
band
gap
therefore
increases
capability
visible-light
absorption.
As
result,
excellent
photoactivity
unprecedented
recyclability
LZU-190
(for
at
least
20
catalytic
runs,
each
product
yield
99%)
have
been
illustrated
visible-light-driven
oxidative
hydroxylation
arylboronic
acids
phenols.
This
contribution
represents
first
report
on
photocatalytic
application
which
not
only
sheds
light
exploration
robust
organophotocatalysts
small
molecules
extended
but
also
offers
in-depth
understanding
structure-activity
relationship
toward
practical
applications
materials.
Angewandte Chemie International Edition,
Journal Year:
2018,
Volume and Issue:
57(37), P. 12106 - 12110
Published: July 19, 2018
Crystalline
and
porous
covalent
organic
frameworks
(COFs)
metal-organic
(MOFs)
materials
have
attracted
enormous
attention
in
the
field
of
photocatalytic
H2
evolution
due
to
their
long-range
order
structures,
large
surface
areas,
outstanding
visible
light
absorbance,
tunable
band
gaps.
In
this
work,
we
successfully
integrated
two-dimensional
(2D)
COF
with
stable
MOF.
By
covalently
anchoring
NH2
-UiO-66
onto
TpPa-1-COF,
a
new
type
MOF/COF
hybrid
high
area,
framework,
crystallinity
was
synthesized.
The
resulting
hierarchical
show
efficient
under
irradiation.
Especially,
-UiO-66/TpPa-1-COF
(4:6)
exhibits
maximum
rate
23.41
mmol
g-1
h-1
(with
TOF
402.36
),
which
is
approximately
20
times
higher
than
that
parent
TpPa-1-COF
best
performance
photocatalyst
for
among
various
MOF-
COF-based
photocatalysts.
Angewandte Chemie International Edition,
Journal Year:
2019,
Volume and Issue:
58(19), P. 6430 - 6434
Published: March 19, 2019
The
construction
of
stable
covalent
organic
frameworks
(COFs)
for
various
applications
is
highly
desirable.
Herein,
we
report
the
synthesis
a
novel
two-dimensional
(2D)
porphyrin-based
sp2
carbon-conjugated
COF
(Por-sp2
c-COF),
which
adopts
an
eclipsed
AA
stacking
structure
with
Brunauer-Emmett-Teller
surface
area
689
m2
g-1
.
Owing
to
C=C
linkages,
Por-sp2
c-COF
shows
high
chemical
stability
under
conditions,
even
harsh
conditions
such
as
9
m
HCl
and
NaOH
solutions.
Interestingly,
can
be
used
metal-free
heterogeneous
photocatalyst
visible-light-induced
aerobic
oxidation
amines
imines.
More
importantly,
in
comparison
imine-linked
Por-COF,
inherent
equips
it
several
advantages
photocatalyst,
including
reusability
photocatalytic
performance.
This
clearly
demonstrates
that
carbon-linked
2D
COFs
provide
interesting
platform
photocatalysis.
Advanced Science,
Journal Year:
2018,
Volume and Issue:
6(2)
Published: Nov. 12, 2018
Abstract
Covalent
organic
frameworks
(COFs)
are
an
emerging
class
of
functional
nanostructures
with
intriguing
properties,
due
to
their
unprecedented
combination
high
crystallinity,
tunable
pore
size,
large
surface
area,
and
unique
molecular
architecture.
The
range
properties
characterized
in
COFs
has
rapidly
expanded
include
those
interest
for
numerous
applications
ranging
from
energy
environment.
Here,
a
background
overview
is
provided,
consisting
brief
introduction
porous
materials
the
design
feature
COFs.
Then,
recent
advancements
as
designer
platform
plethora
emphasized
together
discussions
about
strategies
principles
involved.
Finally,
challenges
remaining
this
type
material
real
outlined.
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.
Advanced Materials,
Journal Year:
2018,
Volume and Issue:
31(4)
Published: Oct. 22, 2018
Exploring
advanced
porous
materials
is
of
critical
importance
in
the
development
science
and
technology.
Porous
polymers,
being
famous
for
their
all-organic
components,
tailored
pore
structures,
adjustable
chemical
have
attracted
an
increasing
level
research
interest
a
large
number
applications,
including
gas
adsorption/storage,
separation,
catalysis,
environmental
remediation,
energy,
optoelectronics,
health.
Recent
years
witnessed
tremendous
breakthroughs
these
fields
thanks
to
unique
structures
versatile
skeletons
polymers.
Here,
recent
milestones
diverse
applications
polymers
are
presented,
with
emphasis
on
structural
requirements
or
parameters
that
dominate
properties
functionalities.
The
Review
covers
following
applications:
i)
adsorption,
ii)
water
treatment,
iii)
iv)
heterogeneous
v)
electrochemical
energy
storage,
vi)
precursors
carbons,
vii)
other
(e.g.,
intelligent
temperature
control
textiles,
sensing,
proton
conduction,
biomedicine,
actuators).
key
each
application
discussed
in-depth
understanding
structure-property
relationships
provided.
Finally,
perspective
future
directions
challenges
this
field
presented
further
studies.
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.
Materials Horizons,
Journal Year:
2019,
Volume and Issue:
7(2), P. 411 - 454
Published: Sept. 16, 2019
The
review
focuses
on
recent
developments
in
the
synthetic
methodologies
of
COFs
and
their
applications
field
organocatalysis,
electrocatalysis
photocatalysis.
Future
scope
are
also
described.
