Clean Technologies and Environmental Policy,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 29, 2024
Abstract
Adsorption
using
covalent
organic
frameworks
(COFs)
is
very
effective
and
favoured
for
removing
per-
polyfluoroalkyl
substances
(PFAS)
from
various
matrices.
The
prominent
classes
of
COF,
their
synthesis
methods,
application
in
COF-based
technologies
PFAS
adsorption
myriad
environments
are
discussed.
Furthermore,
the
influencing
characteristics
distinct
COF
also
examined.
COFs
have
large
specific
surface
areas
porosity,
offering
PFASs
a
host
sites
thus
high
capabilities.
β
-Cyclodextrin-based
(
-CD-COFs),
ionic
(iCOFs),
amine-functionalised
COFs,
porphyrin-based
hydrophobic
some
most
notable
examples
as
such
been
employed
large-scale
remediation.
Direct
post-synthetic
modification
two
main
design
methodologies.
general
approach
constructing
involves
reaction
ion
monomers
with
other
neutral
monomers.
For
solvothermal
currently
direct
synthetic
method.
process
used
to
synthesise
tremendously
impacts
how
effectively
they
adsorb
PFAS.
High-performance
materials
remediation
created
by
researchers
customising
suitable
techniques.
authors’
objective
give
readers
alike
broad
overview
current
status
research
development,
including
numerous
challenges
prospects
associated
COFs.
Graphical
abstract
Application
Cement
Stabilized
OB
dump,
BOF
slag,
Fly
Ash
Mixes
Sustainable
Pavement
Material
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(43), С. 59379 - 59387
Опубликована: Окт. 17, 2024
Aqueous
asymmetric
catalysis
using
chiral
covalent
organic
frameworks
(COFs)
represents
a
significant
advancement
but
remains
to
be
explored.
Herein,
we
present
the
first
example
of
aqueous
catalyzed
by
primary
amine-tagged
D-ADP-TAPB
COF.
The
COF
was
synthesized
postsynthetic
deprotection
D-ADP-TAPB-Boc
bearing
protective
tert-butoxycarbonyl
(Boc)
group,
which
constructed
Schiff-base
reaction
between
an
alanine-derived
building
block
(D-ADP-Boc)
and
1,3,5-tris(4-aminophenyl)benzene
(TAPB).
crystalline
exhibits
uniform,
spherical
morphology
with
abundant,
well-distributed
amines,
rendering
it
highly
active
in
aldol
cyclohexanone
4-nitrobenzaldehyde.
Notably,
this
is
conducted
entirely
water,
achieving
impressive
yields
enantiomeric
excess
(ee)
values
up
90
85%,
respectively.
To
best
our
knowledge,
catalyst
high
reactivity
enantioselectivity
for
solely
eliminating
need
conventional
solvents.
Moreover,
plausible
mechanism
COF-mediated
reactions
elucidated.
This
work
not
only
expands
toolbox
designing
rare
amine-functionalized
COFs
also
opens
exciting
avenues
developing
green
water-based
enantioselective
catalysis.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 21, 2024
Covalent
organic
frameworks
(COFs)
have
emerged
as
a
versatile
class
of
materials
owing
to
their
well-defined
crystalline
structures
and
inherent
porosity.
In
the
realm
COFs,
appeal
lies
in
customizable
nature,
which
can
be
further
enhanced
by
incorporating
diverse
functionalities.
Postsynthetic
modifications
(PSMs)
emerge
potent
strategy,
facilitating
introduction
desired
functionalities
postsynthesis.
A
significant
challenge
PSM
pertains
preserving
crystallinity
porosity
COFs.
this
study,
we
aim
investigate
intricate
interplay
between
strategies
resulting
porous
The
investigation
delves
into
methodologies
employed
PSMs,
elucidate
distinct
influences
on
Through
comprehensive
analysis
recent
advancements
case
studies,
study
highlights
relationships
among
parameters,
including
reaction
conditions,
precursor
selection,
functional
groups,
impact
structural
features
By
understanding
how
fine-tune
characteristics
researchers
harness
knowledge
design
COFs
with
tailored
properties
for
specific
applications,
contributing
advancement
fields.
This
work
not
only
deepens
our
but
also
provides
valuable
insights
broader
other
solid
materials.
Analytical Chemistry,
Год журнала:
2024,
Номер
96(19), С. 7626 - 7633
Опубликована: Апрель 30, 2024
To
date,
achieving
enantioselective
electroanalysis
for
electrochemically
silent
chiral
molecules
is
still
highly
desired.
Here,
an
ionic
covalent
organic
framework
(COF)
consisting
of
the
pyridinium
cation
was
derived
from
tripyridinium
Zincke
salt
and
1,4-phenylenediamine
in
a
one-pot
reaction.
The
electrochemical
measurements
revealed
that
backbone
contributed
to
electron
transfer
with
low
charge
resistance.
Besides,
π–π+
interaction
between
ferrocenyl
unit
can
promote
absorption
electroactive
reagents
into
hole
COF,
so
as
afford
signals
by
themselves,
replacing
testing
enantiomers.
As
result,
complex
used
platform
effective
at
enantiomerically
recognizing
amino
alcohols
(prolinol,
valinol,
leucinol,
alaninol)
acids
(methionine,
serine,
penicillamine),
giving
ratios
current
intensity
l-
d-enantiomers
range
1.46–1.72.
Moreover,
density
functional
theory
calculations
determined
possible
intermolecular
interactions
enantiomers
selector:
namely,
hydrogen
bonds
electrostatic
attractions.
Overall,
present
work
offers
strategy
enlarge
scope
recognition
based
on
COFs.
Chinese Journal of Chromatography,
Год журнала:
2024,
Номер
42(1), С. 1 - 12
Опубликована: Янв. 1, 2024
Enantiomers
typically
show
different
pharmacological,
toxicological,
and
physiological
properties.
Thus,
the
preparation
of
enantiopure
compounds
is
great
significance
for
human
health
sustainable
development.
Compared
with
asymmetric
catalysis,
enantiomeric
separation
simpler,
faster,
more
efficient;
as
such,
it
has
become
preferred
method
obtaining
pure
enantiomers.
At
present,
methods
mainly
include
chromatography,
nanochannel
membrane
separation,
selective
adsorption,
recrystallization.
In
particular,
gas
chromatography
(GC)
plays
an
important
role
in
enantioseparation
because
its
high
sensitivity,
excellent
reproducibility,
outstanding
processing
capacity
various
The
stationary
phase
key
to
efficiency
GC,
efficient,
stable,
cost-effective
materials
that
could
serve
phases
are
constantly
being
explored.
Organic
frameworks,
such
covalent
organic
frameworks
(COFs),
metal-organic
(MOFs),
porous
cages
(POCs),
(MOCs),
hydrogen-bonded
(HOFs),
possess
large
specific
surface
areas,
porosities,
tunable
pore
sizes,
easy
functionalization,
rendering
them
promising
candidates
mixed
analytes.
Research
shown
use
GC
results
column
resolution
analytes,
including
Catalysts,
Год журнала:
2024,
Номер
14(7), С. 429 - 429
Опубликована: Июль 5, 2024
Hydrogen
peroxide
(H2O2)
is
one
of
the
most
environmentally
friendly
and
versatile
chemical
oxidizing
agents,
with
only
O2
H2O
as
reaction
products.
It
widely
used
in
environmental
protection,
industrial
production,
medical
fields.
At
present,
production
H2O2
adopts
anthraquinone
oxidation,
but
there
are
shortcomings
such
pollution
environment
large
energy
consumption.
Covalent
organic
frameworks
(COFs)
a
class
porous
crystalline
materials
formed
by
molecular
building
blocks
connected
covalent
bonds.
The
ordered
conjugated
structure
COFs
not
facilitates
absorption
light
also
promotes
transport
excited-state
electrons.
Therefore,
photochemical
synthesis
from
water
oxygen
using
photocatalysts
based
on
green
route
has
attracted
much
attention.
In
this
review,
we
provide
an
overview
recent
studies
different
mechanisms
involved
photocatalytic
hydrogen
peroxide.
Then,
summarize
various
strategies
to
improve
performance.
Finally,
outline
challenges
future
directions
practical
applications.
This
review
highlights
potential
application
prospects
H2O2,
aiming
guidance
for
design
COF-based
catalysts
optimization
order
promote
scientific
development
field.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 3, 2025
Vinylene-linked
Covalent
Organic
Frameworks
(V-2D-COFs)
are
a
class
of
promising
porous
organic
materials
that
feature
fully
π-conjugated
structures,
high
crystallinity,
ultrahigh
chemical
stability,
and
extraordinary
optoelectronic
properties.
However,
the
types
reactions
availability
monomers
for
synthesizing
Chemical Society Reviews,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
This
review
discusses
the
design
strategies
of
COFs
for
removal
toxicants,
and
highlights
recent
advancements
in
as
robust
candidates
efficient
various
types
toxicants.
Journal of Separation Science,
Год журнала:
2025,
Номер
48(2)
Опубликована: Фев. 1, 2025
ABSTRACT
Chiral
covalent
organic
frameworks
(CCOFs)
are
emerging
porous
materials
with
tunable
chiral
structures,
abundant
pores,
and
high
surface
areas,
gaining
significant
attentions
in
separation,
sensing,
asymmetric
catalysis.
This
review
summarizes
the
synthesis
methods
of
CCOFs
their
applications
recognition.
It
discusses
advantages
limitations
three
strategies,
including
post‐modification,
direct
synthesis,
chiral‐induced
synthesis.
The
also
highlights
potential
catalysis
for
efficient
purification,
detection,
molecules.
Challenges
future
directions
preparation
application
addressed,
aiming
to
guide
further
research
practical
applications.