Chemical Science,
Год журнала:
2024,
Номер
15(6), С. 1924 - 1937
Опубликована: Янв. 1, 2024
Porous
organic
frameworks
(POFs)
are
novel
porous
materials
that
have
attracted
much
attention
due
to
their
extraordinary
properties,
such
as
high
specific
surface
area,
tunable
pore
size,
stability
and
ease
of
functionalisation.
However,
conventional
synthesised
POFs
mostly
large-sized
particles
or
insoluble
powders,
which
difficult
recycle
low
mass
transfer
efficiencies,
limiting
the
development
cutting-edge
applications.
Therefore,
processing
POF
into
membrane
structures
is
great
significance.
In
recent
years,
interface
engineering
strategies
proved
be
efficient
methods
for
formation
membranes.
this
perspective,
advances
in
use
interfaces
prepare
membranes
reviewed.
The
challenges
strategy
potential
applications
formed
discussed.
Abstract
Membrane‐based
carbon
dioxide
(CO
2
)
capture
and
separation
technologies
have
aroused
great
interest
in
industry
academia
due
to
their
potential
combat
current
global
warming,
reduce
energy
consumption
chemical
of
raw
materials,
achieve
neutrality.
The
emerging
covalent
organic
frameworks
(COFs)
composed
linkers
via
reversible
bonds
are
a
class
porous
crystalline
polymers
with
regular
extended
structures.
inherent
structure
customizable
give
COFs
high
permanent
porosity,
short
transport
channel,
tunable
functionality,
excellent
stability,
thereby
enabling
them
rising‐star
alternatives
for
developing
advanced
CO
membranes.
Therefore,
the
promising
research
areas
ranging
from
development
COF
membranes
applications
emerged.
Herein,
this
review
first
introduces
main
advantages
as
state‐of‐the‐art
separation,
including
pore
size,
modifiable
surfaces
property,
adjustable
surface
charge,
stability.
Then,
preparation
approaches
COF‐based
systematically
summarized,
situ
growth,
layer‐by‐layer
stacking,
blending,
interface
engineering.
Subsequently,
key
advances
separating
various
mixed
gases,
such
/CH
4
,
/H
/N
/He,
comprehensively
discussed.
Finally,
issues
further
expectations
field
proposed.
Chemistry of Materials,
Год журнала:
2023,
Номер
35(20), С. 8353 - 8370
Опубликована: Окт. 12, 2023
Covalent
organic
frameworks
(COFs)
make
up
an
emerging
class
of
crystalline
porous
materials
mainly
composed
light
elements
in
the
form
dynamic
covalent
bonds.
Owing
to
their
two-
or
three-dimensional
network
structures
and
ideal
properties,
including
low
density,
large
specific
surface
area,
high
chemical
stability,
good
biocompatibility,
COFs
have
shown
a
wide
range
applications
optoelectronic
devices,
energy
conversion
storage,
adsorption
separation,
sensing,
catalysis,
biomedicine.
This
review
provides
overview
recent
advances
functional
COF-based
nanoplatforms
for
biological
diagnosis
treatment,
such
as
enzyme
protein
drug
delivery,
photodynamic/photothermal
therapy,
synergistic
treatment.
Challenges
future
directions
developing
biomedicine
related
are
also
discussed.
We
envisage
that
this
will
inspire
scientists,
chemists,
biologists,
clinical
doctors
working
fields
work
closely
move
field
toward
trials
human
healthcare.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(18)
Опубликована: Дек. 24, 2023
Abstract
Crystalline
porous
organic
polymers
(CPPs)
or
covalent
frameworks
(COFs),
are
composed
by
light
elements
linked
bonds.
Despite
the
remarkable
progress
attained,
there
still
bottlenecks
limiting
further
development,
some
of
them
related
to
presence
defects
during
their
synthesis
as
well
in‐depth
understanding
structure
active
centers
and/or
details
reaction
mechanism.
Indeed,
very
often
proposed
structures
far
from
reality
because
and
disorders
have
not
been
considered.
The
present
review
provides
an
illustrative
overview
“defects
disorder
in
COFs”.
These
include
those
only
generated
manipulation
COFs,
but
also
lack
crystallinity,
stacking
network
vacancies.
starts
giving
general
remarks
on
COFs
synthetic
methods,
followed
different
methods
play
manage
defects,
how
minimize
take
advantage
gain
new
properties
applications.
Selected
characterization
techniques
quantify
defective
sites
presented.
Finally,
challenges
future
opportunities
field
summarized
last
section.
Materials Chemistry Frontiers,
Год журнала:
2023,
Номер
7(8), С. 1463 - 1481
Опубликована: Янв. 1, 2023
The
unique
electron-deficient
viologen-based
compounds
are
the
terminally
substituted
4,4′-bipyridine
with
excellent
photoelectric
response
features
to
be
applied
in
preparation
of
stimuli-responsive
materials.
ACS Materials Letters,
Год журнала:
2023,
Номер
5(11), С. 2877 - 2886
Опубликована: Сен. 27, 2023
Covalent
organic
frameworks
(COFs)
have
been
remarkably
evolved
within
the
field
of
photocatalysis
owing
to
their
customizability
and
targeted
functionalization.
However,
exciton
effect
arising
from
Coulomb
interaction
among
electrons–holes
cannot
be
disregarded.
Exploring
new
approaches
regulate
dissociation
on
COFs
facilitate
is
significant.
Within
this
work,
localized
defects
were
fabricated
skeleton
by
one-step
synthesis
method
introducing
monoaldehyde
electron
donors
(pyrene,
ferrocene,
triphenylamine).
The
formation
D–A
configuration
can
directionally
change
local
electronic
structure
charge
distribution
induce
enhanced
dipole
polarization,
thus,
promoting
enhancing
photocatalytic
activity.
Among
them,
pyrene
donor-constructed
defective
COF
exhibited
a
7.8-fold
increase
in
aqueous-phase
oxygen-containing
photopolymerization
rate
relative
pristine
COF,
with
conversion
80%
30
min.
Chemical Science,
Год журнала:
2023,
Номер
14(6), С. 1543 - 1550
Опубликована: Янв. 1, 2023
Irreversible
locking
of
imine
linkages
into
stable
represents
a
promising
strategy
to
improve
the
robustness
and
functionality
covalent
organic
frameworks
(COFs).
We
report,
for
first
time,
multi-component
one-pot
reaction
(OPR)
annulation
construct
highly
nonsubstituted
quinoline-bridged
COFs
(NQ-COFs),
that
equilibrium
regulation
reversible/irreversible
cascade
reactions
by
addition
MgSO4
desiccant
is
crucial
achieve
high
conversion
efficiency
crystallinity.
The
higher
long-range
order
surface
area
NQ-COFs
synthesized
this
OPR
than
those
reported
two-step
post-synthetic
modification
(PSM)
facilitate
charge
carrier
transfer
photogeneration
ability
superoxide
radicals
(O2˙-),
which
makes
these
more
efficient
photocatalysts
O2˙-
mediated
synthesis
2-benzimidazole
derivatives.
general
applicability
synthetic
demonstrated
fabricating
12
other
crystalline
with
diversity
topologies
functional
groups.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(22)
Опубликована: Янв. 9, 2024
Abstract
Covalent
organic
frameworks
(COFs)
have
garnered
significant
attention
for
nearly
two
decades
due
to
their
exceptional
structural
designs,
tunable
properties,
and
wide‐ranging
applications.
Recently,
a
novel
subclass
of
COFs
known
as
partially
condensed,
sub‐stoichiometric
(ss‐COFs)
has
emerged.
This
presents
promising
new
avenue
constructing
distinct
COF
structures
in
contrast
fully
stoichiometric
(fc‐COFs).
ss‐COFs
are
deliberately
designed
with
periodic
unreacted
functional
groups,
thereby
giving
rise
intriguing
electronic,
optical,
catalytic
properties.
The
deviation
from
conventional
approach
opens
up
prospects
tailor
material
properties
unexplored
Here,
this
review
focuses
on
the
latest
advancements
breakthroughs
ss‐COFs,
including
topological
design,
structure
characterization,
synthetic
method,
practical
From
basic
designing
principles
cutting‐edge
it
will
be
explored
how
paving
way
research
pushing
boundaries
toward
scientific
technological
possibilities.
