Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 14, 2025
Abstract
The
development
of
advanced
composite
membranes
for
pervaporation
(PV)
via
interfacial
polymerization
(IP)
has
attracted
increasing
interest
various
chemical
separations.
These
achieve
precise
separation
the
construction
a
cross‐linked
membrane
structure,
thereby
surpassing
challenging
trade‐off
between
permeation
flux
and
factor.
This
review
provides
comprehensive
IPs
in
solvent
dehydration,
biofuel
recovery,
desalination
PV
technology.
fundamentals
process
are
introduced,
including
essential
performance
parameters
transport
mechanisms.
A
analysis
optimization
is
subsequently
performed
on
basis
structure.
Attention
given
to
preparation
selective
layers
interlayers,
along
with
potential
strategies,
encompassing
monomer
modification,
integration
nanomaterials,
emerging
interlayer
materials,
goal
determining
proper
conditions
maintaining
optimal
permeability
selectivity.
Further
discussion
focuses
IP
such
as
employing
metal–organic
frameworks,
covalent
organic
porous
cages
building
blocks.
Moreover,
evaluates
across
diverse
applications,
organic–organic
separation,
desalination.
also
highlights
unresolved
scientific
technical
challenges,
aiming
inspire
advancements
next‐generation
membranes.
Journal of the American Chemical Society,
Год журнала:
2023,
Номер
145(4), С. 2544 - 2552
Опубликована: Янв. 20, 2023
Fashioning
microporous
covalent
organic
frameworks
(COFs)
into
single
crystals
with
ordered
macropores
allows
for
an
effective
reduction
of
the
mass
transfer
resistance
and
maximum
preservation
their
intrinsic
properties
but
remains
unexplored.
Here,
we
report
first
synthesis
three-dimensional
(3D)
macroporous
imine-linked
3D
COFs
(COF-300
COF-303)
via
a
template-assisted
modulated
strategy.
In
this
strategy,
crystallized
within
sacrificial
colloidal
crystal
template,
assembled
from
monodisperse
polystyrene
microspheres,
underwent
aniline-modulated
amorphous-to-crystalline
transformation
to
form
large
interconnected
macropores.
The
effects
introduced
structure
on
sorption
performances
COF-300
were
further
probed
by
iodine.
Our
results
indicate
that
iodine
adsorption
occurred
in
micropores
not
Accordingly,
capacity
COF
was
governed
micropore
accessibility.
relatively
long
diffusion
path
non-macroporous
resulted
limited
accessibility
(48.4%)
thus
low
(1.48
g·g-1).
introduction
can
greatly
shorten
render
all
fully
accessible
(3.15
g·g-1)
coincides
well
theoretical
one.
Nature Communications,
Год журнала:
2023,
Номер
14(1)
Опубликована: Сен. 4, 2023
Adsorbents
widely
utilized
for
environmental
remediation,
water
purification,
and
gas
storage
have
been
usually
reported
to
be
either
porous
or
crystalline
materials.
In
this
contribution,
we
report
the
synthesis
of
two
covalent
organic
superphane
cages,
that
are
as
nonporous
amorphous
superadsorbents
aqueous
iodine
adsorption
with
record-breaking
capability
selectivity.
static
system,
cages
exhibit
uptake
capacity
up
8.41
g
g-1
in
I2
solution
9.01
I3-
(KI/I2)
solution,
respectively,
even
presence
a
large
excess
competing
anions.
dynamic
flow-through
experiment,
can
reach
3.59
5.79
g-1,
respectively.
Moreover,
these
able
remove
trace
media
from
ppm
level
(5.0
ppm)
down
ppb
concentration
(as
low
11
ppb).
Based
on
binding-induced
mechanism,
such
molecular
materials
prove
superior
all
existing
adsorbents.
This
study
open
new
avenue
development
state-of-the-art
practical
uses
conceptionally
(NAS).
Journal of the American Chemical Society,
Год журнала:
2023,
Номер
145(28), С. 15465 - 15472
Опубликована: Июль 7, 2023
Developing
diverse
synthetic
routes
to
prepare
various
crystalline
covalent
organic
frameworks
(COFs)
and
enrich
the
family
of
COFs
is
very
important
highly
desirable.
In
this
research,
we
demonstrate
that
Kröhnke
oxidation
(originally
developed
carbonyl
compounds)
can
be
employed
as
an
efficient
method
construct
two
nitrone-linked
(CityU-1
CityU-2)
through
ingenious
design
polynitroso-containing
precursors
well
exquisite
control
polymerization
conditions.
The
formation
structure
nitrone-based
linkage
units
have
been
confirmed
a
mode
reaction.
as-obtained
characterized
by
Fourier
transform
infrared
X-ray
photoelectron
spectroscopy,
powder
diffraction
patterns,
scanning
electron
microscopy.
Notably,
CityU-1
exhibits
BET
specific
surface
area
497.9
m2g-1
with
I2
capture
capacity
3.0
g
g-1
at
75
°C.
Our
research
would
provide
more
chances
for
applications.
ACS Applied Nano Materials,
Год журнала:
2023,
Номер
6(2), С. 1295 - 1302
Опубликована: Янв. 11, 2023
With
the
rapid
development
of
nuclear
industry,
effective
treatment
radioactive
iodine
has
currently
become
an
urgent
but
challenging
task.
Herein,
two
covalent
organic
frameworks
(COFs),
TFBT-1
and
TFBT-2,
were
successfully
synthesized
for
adsorption.
Structure
analysis
revealed
that
they
are
both
nanoporous
materials
with
one-dimensional
channels
derived
from
packing
related
two-dimensional
frameworks.
Iodine
adsorption
experiments
demonstrated
COF
exhibit
performance
adsorption,
a
maximum
amount
upto
3.15
g
g–1
2.60
TFBT-2.
The
results
experimental
analyses
Fourier-transform
infrared
spectroscopy,
X-ray
photoelectron
Raman
spectroscopy
clearly
their
high
is
attributed
to
strong
interactions
between
adsorbed
uniformly
located
abundant
nitrogen
sites
in
pores
materials,
which
pre-introduced
acylamides
situ-generated
Schiff
base
imine
groups.
present
work
by
introducing
nitrogen-rich
into
adsorbents
can
be
achieved.
In
order
to
overcome
the
limitations
of
supramolecular
organic
cages
for
their
incomplete
accessibility
active
sites
in
solid
state
and
uneasy
recyclability
liquid
solution,
herein
a
nitrogen-rich
cage
is
rationally
linked
into
framework
systems
four
isoreticular
covalent
frameworks
(COFs),
that
is,
Cage-TFB-COF,
Cage-NTBA-COF,
Cage-TFPB-COF,
Cage-TFPT-COF,
are
successfully
synthesized.
Structure
determination
reveals
they
all
high-quality
crystalline
materials
derived
from
eclipsed
packing
related
two-dimensional
frameworks.
Since
usually
have
high
affinity
toward
iodine
species,
adsorption
investigations
carried
out
results
show
them
display
an
enhancement
capacities.
Especially,
Cage-NTBA-COF
exhibits
capacity
304
wt%,
14-fold
higher
than
sample
packed
itself.
The
strong
interactions
between
adsorbed
species
revealed
by
spectral
analyses.
This
work
demonstrates
that,
utilizing
reticular
chemistry
strategy
extend
close-packed
porous
solids,
inherent
properties
can
be
greatly
exploited
targeted
applications.
Chemical Reviews,
Год журнала:
2024,
Номер
124(12), С. 7829 - 7906
Опубликована: Июнь 3, 2024
Covalent
network
polymers,
as
materials
composed
of
atoms
interconnected
by
covalent
bonds
in
a
continuous
network,
are
known
for
their
thermal
and
chemical
stability.
Over
the
past
two
decades,
these
have
undergone
significant
transformations,
gaining
properties
such
malleability,
environmental
responsiveness,
recyclability,
crystallinity,
customizable
porosity,
enabled
development
integration
dynamic
chemistry
(DCvC).
In
this
review,
we
explore
innovative
realm
polymers
focusing
on
recent
advances
achieved
through
application
DCvC.
We
start
examining
history
fundamental
principles
DCvC,
detailing
its
inception
core
concepts
noting
key
role
reversible
bond
formation.
Then
reprocessability
DCvC
is
thoroughly
discussed,
starting
from
milestones
that
marked
evolution
progressing
to
current
trends
applications.
The
influence
crystallinity
then
reviewed,
covering
diversity,
synthesis
techniques,
functionalities.
concluding
section,
address
challenges
faced
field
speculates
potential
future
directions.
ACS Materials Letters,
Год журнала:
2023,
Номер
5(6), С. 1546 - 1555
Опубликована: Апрель 24, 2023
By
linking
a
nitrogen-rich
organic
cage
with
linear
connectors,
three
cage-based
isoreticular
covalent
frameworks,
i.e.,
Cage-IRCOF-1,
Cage-IRCOF-2,
Cage-IRCOF-3,
were
successfully
designed
and
synthesized
by
Schiff-base
polycondensation
reactions.
The
structure
determination
simulations
from
powder
X-ray
diffraction
measurements
indicated
that
these
COFs
have
high
crystallinity
derived
the
packing
of
covalently
linked
two-dimensional
layer
frameworks.
As
porous
materials,
iodine
capture
studies
carried
out,
proving
they
displayed
obvious
enhancements
in
uptake
as
compared
pristine
itself.
In
particular,
Cage-IRCOF-1
an
adsorption
capacity
262
wt
%,
which
is
12
times
higher
than
solid
packed
Spectral
revealed
there
strong
interactions
between
groups
adsorbed
species.
This
work
demonstrated
discrete
cages
into
reticular
crystalline
effective
adsorbents
can
be
fabricated
for
targeted
applications.
