Langmuir,
Journal Year:
2024,
Volume and Issue:
40(8), P. 4373 - 4381
Published: Feb. 15, 2024
In
this
work,
the
functionalized
covalent
organic
framework
(COF)
was
prepared
via
a
convenient
ball
milling
process.
The
aldehyde
group
terminated
COF-F
reacted
with
amino
thiadiazole
in
jar
under
mechanical
forces;
hence,
obtained
and
denoted
as
Thdz@COF-F.
as-prepared
Thdz@COF-F
serves
an
oil-based
lubricant
additive
exhibits
remarkable
tribological
properties,
which
can
reduce
average
friction
coefficient
of
base
oil
from
0.169
to
0.102
decrease
wear
volume
by
87.0%.
antifriction
antiwear
performances
are
mainly
due
repairing
effect
nanoparticles
protective
tribo-film
that
averts
direct
contact
pairs.
addition,
through
method,
triazole
thiazole
were
also
represented
good
lubrication
performance,
demonstrating
feasibility
mechanochemical
synthesis
method
for
COFs.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(14)
Published: Dec. 23, 2023
Abstract
The
first
synthesis
and
comprehensive
characterization
of
two
vinyl
tetrazine‐linked
covalent
organic
frameworks
(COF),
TA‐COF‐1
TA‐COF‐2,
are
reported.
These
materials
exhibit
high
crystallinity
specific
surface
areas
1323
1114
m
2
g
−1
.
COFs
demonstrate
favorable
band
positions
narrow
gaps
suitable
for
light‐driven
applications.
advantages
enable
TA‐COFs
to
act
as
reusable
metal‐free
photocatalysts
in
the
arylboronic
acids
oxidation
light‐induced
coupling
benzylamines.
In
addition,
these
show
acid
sensing
capabilities,
exhibiting
visible
reversible
color
changes
upon
exposure
HCl
solution,
vapor,
NH
3
vapor.
Further,
outperform
a
wide
range
previously
reported
COF
photocathodes.
tetrazine
linker
skeleton
represents
significant
advancement
field
synthesis,
enhancing
separation
efficiency
charge
carriers
during
photoreaction
contributing
their
photocathodic
properties.
can
also
degrade
5‐nitro‐1,2,4‐triazol‐3‐one
(NTO),
an
insensitive
explosive
present
industrial
wastewater,
20
min
sunlight‐driven
photocatalytic
process;
thus,
revealing
dual
functionality
protonated
both
photodegradation
Brønsted
catalysts.
This
pioneering
work
opens
new
avenues
harnessing
potential
COF‐based
materials,
facilitating
advances
catalysis,
sensing,
other
related
fields.
Small,
Journal Year:
2024,
Volume and Issue:
20(26)
Published: Jan. 28, 2024
Abstract
Synthesis
of
covalent
organic
framework
nanosheets
(CONs)
with
high
aspect
ratio
is
crucial
to
their
assembly
into
advanced
membranes.
Nonetheless,
the
π‐π
stacking
between
(COF)
layers
often
leads
thick
CONs.
Herein,
inspired
by
biomineralization
process,
a
series
CONs
>15
000
synthesized
multifunctional
polyelectrolytes
which
not
only
provide
nucleation
sites
for
pre‐assembly
COF
monomer,
but
also
suppress
interaction
anisotropic
growth
through
protonation.
The
membrane
assembled
from
exhibited
water
permeance
341
kg
m
−2
h
−1
and
salt
rejection
99.5%
in
desalination,
outperforming
ever‐reported
This
method
establishes
platform
synthesis
crystalline
nanosheets.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(13)
Published: Feb. 7, 2024
β-Keto-enamine-linked
2D
covalent
organic
frameworks
(COFs)
have
emerged
as
highly
robust
materials,
showing
significant
potential
for
practical
applications.
However,
the
exclusive
reliance
on
1,3,5-triformylphloroglucinol
(Tp
aldehyde)
in
design
of
such
COFs
often
results
production
non-porous
amorphous
polymers
when
combined
with
certain
amine
building
blocks.
Attempts
to
adjust
crystallinity
and
porosity
by
a
modulator
approach
are
inefficient
because
Tp
aldehyde
readily
forms
stable
β-keto-enamine-linked
monomers/oligomers
various
aromatic
amines
through
an
irreversible
keto-enol
tautomerization
process.
Our
research
employed
unique
protection-deprotection
strategy
enhance
squaramide-based
COFs.
Advanced
solid-state
NMR
studies,
including
1D
Langmuir,
Journal Year:
2024,
Volume and Issue:
40(8), P. 4373 - 4381
Published: Feb. 15, 2024
In
this
work,
the
functionalized
covalent
organic
framework
(COF)
was
prepared
via
a
convenient
ball
milling
process.
The
aldehyde
group
terminated
COF-F
reacted
with
amino
thiadiazole
in
jar
under
mechanical
forces;
hence,
obtained
and
denoted
as
Thdz@COF-F.
as-prepared
Thdz@COF-F
serves
an
oil-based
lubricant
additive
exhibits
remarkable
tribological
properties,
which
can
reduce
average
friction
coefficient
of
base
oil
from
0.169
to
0.102
decrease
wear
volume
by
87.0%.
antifriction
antiwear
performances
are
mainly
due
repairing
effect
nanoparticles
protective
tribo-film
that
averts
direct
contact
pairs.
addition,
through
method,
triazole
thiazole
were
also
represented
good
lubrication
performance,
demonstrating
feasibility
mechanochemical
synthesis
method
for
COFs.
