Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(19)
Опубликована: Март 7, 2023
Recently,
abundant
active
materials
are
developed
to
achieve
the
wearable
detection
of
human
body
humidity.
However,
limited
response
signal
and
sensitivity
restrict
further
application
due
their
moderate
affinity
water.
Herein,
we
propose
a
flexible
COF-5
film
synthesized
by
brief
vapor-assisted
method
at
room
temperature.
Intermediates
calculated
DFT
simulation
investigate
interaction
between
The
adsorption
desorption
water
molecule
result
in
reversible
deformation
COF
layers
while
creating
new
conductive
path
π-π
stacking.
as-prepared
films
applied
humidity
sensors,
exhibiting
resistance
change
4
orders
magnitude
with
remarkable
linear
relation
log
function
relative
(RH)
11
%-98
%
RH
range.
Applications
including
respiratory
monitoring
non-contact
switch
tested,
providing
promising
prospect
for
Chemical Society Reviews,
Год журнала:
2022,
Номер
51(15), С. 6307 - 6416
Опубликована: Янв. 1, 2022
This
review
highlights
the
recent
advances
of
metalated
covalent
organic
frameworks,
including
synthetic
strategies
and
applications,
discusses
current
challenges
future
directions.
Nature Communications,
Год журнала:
2023,
Номер
14(1)
Опубликована: Фев. 28, 2023
Abstract
Cobalt
coordinated
covalent
organic
frameworks
have
attracted
increasing
interest
in
the
field
of
CO
2
photoreduction
to
CO,
owing
their
high
electron
affinity
and
predesigned
structures.
However,
achieving
conversion
efficiency
is
challenging
since
most
Co
related
coordination
environments
facilitate
fast
recombination
photogenerated
electron-hole
pairs.
Here,
we
design
two
kinds
Co-COF
catalysts
with
oxygen
atoms
find
that
after
tuning
environment,
reported
framework
catalyst
Co-O
4
sites
exhibits
a
production
rate
18000
µmol
g
−1
h
selectivity
as
95.7%
under
visible
light
irradiation.
From
in/ex-situ
spectral
characterizations
theoretical
calculations,
it
revealed
significantly
carrier
migration
matrixes
inhibit
pairs
photocatalytic
process.
This
work
opens
way
for
high-performance
photoreduction.
Chemical Society Reviews,
Год журнала:
2023,
Номер
52(19), С. 6715 - 6753
Опубликована: Янв. 1, 2023
This
review
not
only
highlights
the
progress
of
emission
and
electronic
behaviour
new
pyrene-based
luminescence
molecules
in
aggregated
state,
but
also
provides
a
perspective
for
understanding
mechanism
optoelectronic
properties
pyrenes.
Journal of the American Chemical Society,
Год журнала:
2022,
Номер
144(13), С. 5728 - 5733
Опубликована: Март 23, 2022
The
connectivity
of
building
units
for
3D
covalent
organic
frameworks
(COFs)
has
long
been
primarily
4
and
6,
which
have
severely
curtailed
the
structural
diversity
COFs.
Here
we
demonstrate
successful
design
synthesis
a
porphyrin
based,
8-connected
block
with
cubic
configuration,
could
be
further
reticulated
into
an
unprecedented
interpenetrated
pcb
topology
by
imine
condensation
linear
amine
monomers.
This
study
presents
first
case
high-connectivity
bearing
nodes,
thus
greatly
enriching
topological
possibilities
Journal of the American Chemical Society,
Год журнала:
2022,
Номер
144(51), С. 23534 - 23542
Опубликована: Дек. 13, 2022
Polyimide
covalent
organic
framework
(PI-COF)
materials
that
can
realize
intrinsic
redox
reactions
by
changing
the
charge
state
of
their
electroactive
sites
are
considered
as
emerging
electrode
for
rechargeable
devices.
However,
highly
crystalline
PI-COFs
with
hierarchical
porosity
less
reported
due
to
rapid
reaction
between
monomers
and
poor
reversibility
polyimidization
reaction.
Here,
we
developed
a
water-assistant
synthetic
strategy
adjust
rate
polyimidization,
PI-COF
(COFTPDA-PMDA)
kgm
topology
consisting
dual
active
centers
N,N,N′,N′-tetrakis(4-aminophenyl)-1,4-benzenediamine
(TPDA)
pyromellitic
dianhydride
(PMDA)
ligands
was
successfully
synthesized
high
crystallinity
porosity.
The
COFTPDA-PMDA
possesses
micro-/mesoporous
channels
largest
surface
area
(2669
m2/g)
in
PI-COFs,
which
promote
Li+
ions
bulky
bis(trifluoromethanesulfonyl)imide
(TFSI–)
electrolyte
sufficiently
interact
on
COF
skeleton
increase
specific
capacity
cathode
materials.
As
material
lithium-ion
batteries,
COFTPDA-PMDA@50%CNT
integrated
center
carbon
nanotubes
via
π–π
interactions
gave
initial
233
mAh/g
(0.5
A/g)
maintains
at
80
even
current
density
5.0
A/g
after
1800
cycles.
Environment International,
Год журнала:
2023,
Номер
175, С. 107928 - 107928
Опубликована: Апрель 11, 2023
Pharmaceutical
residues
are
the
undecomposed
remains
from
drugs
used
in
medical
and
food
industries.
Due
to
their
potential
adverse
effects
on
human
health
natural
ecosystems,
they
of
increasing
worldwide
concern.
The
acute
detection
pharmaceutical
can
give
a
rapid
examination
quantity
then
prevent
them
further
contamination.
Herein,
this
study
summarizes
discusses
most
recent
porous
covalent-organic
frameworks
(COFs)
metal–organic
(MOFs)
for
electrochemical
various
residues.
review
first
introduces
brief
overview
drug
toxicity
its
living
organisms.
Subsequently,
different
materials
techniques
discussed
with
materials'
properties
applications.
Then
development
COFs
MOFs
has
been
addressed
structural
sensing
Further,
stability,
reusability,
sustainability
MOFs/COFs
reviewed
discussed.
Besides,
MOFs'
limits,
linear
ranges,
role
functionalities,
immobilized
nanoparticles
analyzed
Lastly,
summarized
[email
protected]
composite
as
sensors,
fabrication
strategies
enhance
potential,
current
challenges
area.
Abstract
Covalent
organic
frameworks
(COFs)
with
high
specific
surface
area,
tailored
structure,
easy
functionalization,
and
excellent
chemical
stability
have
been
extensively
exploited
as
fantastic
materials
in
various
fields.
However,
most
cases,
COFs
prepared
powder
form
suffer
from
the
disadvantages
of
tedious
operation,
strong
tendency
to
agglomerate,
poor
recyclability,
greatly
limiting
their
practical
application
environmental
remediation.
To
tackle
these
issues,
fabrication
magnetic
(MCOFs)
has
attracted
tremendous
attention.
In
this
review,
several
reliable
strategies
for
MCOFs
are
summarized.
addition,
recent
outstanding
adsorbents
removal
contaminants
including
toxic
metal
ions,
dyes,
pharmaceuticals
personal
care
products,
other
pollutants
is
discussed.
Moreover,
in‐depth
discussions
regarding
structural
parameters
affecting
potential
highlighted
detail.
Finally,
current
challenges
future
prospects
field
provided
expectation
boost
application.
