Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
63(8)
Опубликована: Ноя. 21, 2023
Nanomedicines
are
extensively
used
in
cancer
therapy.
Covalent
organic
frameworks
(COFs)
crystalline
porous
materials
with
several
benefits
for
therapy,
including
porosity,
design
flexibility,
functionalizability,
and
biocompatibility.
This
review
examines
the
use
of
COFs
therapy
from
perspective
reticular
chemistry
function-oriented
design.
First,
modification
sites
functionalization
methods
discussed,
followed
by
their
potential
as
multifunctional
nanoplatforms
tumor
targeting,
imaging,
integrating
functional
components.
Finally,
some
challenges
clinical
translation
presented
hope
promoting
development
COF-based
anticancer
nanomedicines
bringing
closer
to
trials.
Nature Communications,
Год журнала:
2022,
Номер
13(1)
Опубликована: Дек. 15, 2022
Abstract
The
design
of
adsorbents
for
rapid,
selective
extraction
ultra-trace
amounts
gold
from
complex
liquids
is
desirable
both
an
environmental
and
economical
point
view.
However,
the
development
such
materials
remains
challenging.
Herein,
we
report
fabrication
two
vinylene-linked
two-dimensional
silver(I)-organic
frameworks
prepared
via
Knoevenagel
condensation.
This
material
enables
sensing
with
a
low
limit
detection
60
ppb,
as
well
uptake
aqueous
mixtures
including
distilled
water
15
competing
metal
ions,
leaching
solution
electronic
waste
(e-waste),
wastewater,
seawater.
present
adsorbent
delivers
adsorption
capacity
954
mg
g
−1
,
excellent
selectivity
reusability,
can
rapidly
selectively
extract
seawater
down
to
~20
ppb
(94%
removal
in
10
minutes).
In
addition,
purity
recovered
e-waste
reaches
23.8
Karat
(99.17%
pure).
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(31)
Опубликована: Июнь 7, 2023
H2
O2
photosynthesis
coupled
with
biomass
valorization
can
not
only
maximize
the
energy
utilization
but
also
realize
production
of
value-added
products.
Here,
a
series
COFs
(i.e.
Cu3
-BT-COF,
-pT-COF
and
TFP-BT-COF)
regulated
redox
molecular
junctions
have
been
prepared
to
study
furfuryl
alcohol
(FFA)
photo-oxidation
furoic
acid
(FA).
The
FA
generation
efficiency
-BT-COF
was
found
be
575
mM
g-1
(conversion
≈100
%
selectivity
>99
%)
rate
reach
up
187
000
μM
,
which
is
much
higher
than
-pT-COF,
TFP-BT-COF
its
monomers.
As
shown
by
theoretical
calculations,
covalent
coupling
Cu
cluster
thiazole
group
promote
charge
transfer,
substrate
activation
FFA
dehydrogenation,
thus
boosting
both
kinetics
increase
efficiency.
This
first
report
about
for
valorization,
might
facilitate
exploration
porous-crystalline
catalysts
in
this
field.
EcoEnergy,
Год журнала:
2023,
Номер
1(2), С. 248 - 295
Опубликована: Дек. 1, 2023
Abstract
In
the
advancing
world
of
graphene,
highly
anisotropic
2D
semiconductor
nanosheets,
notable
for
their
nanometer‐scale
thickness,
have
emerged
as
a
leading
innovation,
displaying
immense
potential
in
exploration
renewable
and
clean
energy
production.
These
garnered
significant
attention
from
researchers.
The
nanosheets
are
marked
by
extraordinary
electronic,
optical,
chemical
attributes,
positioning
them
attractive
foundational
components
heterogeneous
photocatalysts.
This
review
diligently
summarizes
both
seminal
work
ongoing
developments
pertaining
to
application
solar
within
context
photocatalysis.
We
begin
detailing
distinctive
properties
concentrating
on
pivotal
roles
augmenting
photocatalytic
efficiency,
explaining
intrinsic
mechanisms
that
govern
migration
rate
photogenerated
carriers
material's
surface.
Subsequently,
we
delineate
methods
employed
synthesize
typical
nanosheets.
alignment
with
overarching
objective
expanding
light
absorption
capacity
accelerating
charge
transfer,
also
examine
current
research
hybridization
techniques
involving
materials
varied
dimensions,
well
deployment
diverse
applications.
conclude
identifying
promising
avenues
challenges
await
further
this
burgeoning
field.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Янв. 3, 2024
Abstract
The
properties
of
two-dimensional
covalent
organic
frameworks
(2D
COFs),
including
porosity,
catalytic
activity
as
well
electronic
and
optical
properties,
are
greatly
affected
by
their
interlayer
stacking
structures.
However,
the
precise
control
mode,
especially
in
a
reversible
fashion,
is
long-standing
challenging
pursuit.
Herein,
we
prepare
three
2D
copper-organic
frameworks,
namely
JNM-n
(
n
=
7,
8,
9).
Interestingly,
sliding
between
eclipsed
AA
(i.e.,
JNM-7-AA
JNM-8-AA)
staggered
ABC
JNM-7-ABC
JNM-8-ABC)
can
be
achieved
through
environmental
stimulation,
which
endows
encapsulation
release
lipase.
Importantly,
JNM-8-AA
exhibit
broader
light
absorption
range,
higher
charge-separation
efficiency,
photocatalytic
for
sensitizing
O
2
to
1
•−
than
isostructures.
Consequently,
deliver
significantly
enhanced
activities
oxidative
cross-coupling
reactions
compared
JNM-8-ABC
other
reported
homogeneous
heterogeneous
catalysts.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(43)
Опубликована: Окт. 15, 2023
Abstract
Photochemical
CO
2
reduction
using
ubiquitous
sunlight
akin
to
natural
photosynthesis
is
an
effective
approach
for
conversion
of
renewable
energy
into
useful
chemical
feedstock.
Driven
by
the
need
earth‐abundant,
inexpensive,
and
sustainable
photocatalysts
with
practical
applicability,
covalent
organic
frameworks
(COFs)
have
emerged
as
a
new
generation
molecularly
defined
semiconductors
tunable
optoelectronic
properties.
These
reticular
highly
ordered,
porous
crystalline
structures
can
be
tailor‐made
covalently
combining
building
blocks
target
specific
functions.
To
date,
numerous
COFs
been
reported,
which
show
promising
activity
photocatalytic
allowing
derive
structure–property–function
relationships.
In
this
review,
different
reported
strategies
are
comprehensively
analyzed
categorized
active
site
engineering
in
COF
synthetic
rationale
resulting
catalytic
each
discussed.
The
recent
advancements
terms
tailored
photocatalyst
design
then
critically
assessed,
aspects
advanced
materials
characterization
analyzed,
future
perspectives
challenges
field
highlighted.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(28), С. 19271 - 19278
Опубликована: Июль 1, 2024
Developing
efficient,
low-cost,
MOF
catalysts
for
CO2
conversion
at
low
concentrations
under
mild
conditions
is
particularly
interesting
but
remains
highly
challenging.
Herein,
we
prepared
an
isostructural
series
of
two-dimensional
(2D)
multivariate
metal–organic
frameworks
(MTV-MOFs)
containing
copper-
and/or
silver-based
cyclic
trinuclear
complexes
(Cu-CTC
and
Ag-CTC).
These
MTV-MOFs
can
be
used
as
efficient
reusable
heterogeneous
the
cyclization
propargylamine
with
CO2.
The
catalytic
performance
these
engineered
by
fine-tuning
Ag/Cu
ratio
in
framework.
Interestingly,
induction
10%
Ag
remarkably
improved
efficiency
a
turnover
frequency
(TOF)
243
h–1,
which
20-fold
higher
than
that
100%
Cu-based
(i.e.,
TOF
=
10.8
h–1).
More
impressively,
such
bimetallic
still
exhibited
high
activity
even
simulated
flue
gas
concentration.
Furthermore,
reaction
mechanism
has
been
examined
through
employment
NMR
monitoring
experiments
DFT
calculations.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(23)
Опубликована: Март 28, 2024
Abstract
Visible‐light
sensitive
and
bi‐functionally
favored
CO
2
reduction
(CRR)/evolution
(CER)
photocathode
catalysts
that
can
get
rid
of
the
utilization
ultraviolet
light
improve
sluggish
kinetics
is
demanded
to
conquer
current
technique‐barrier
traditional
Li‐CO
battery.
Here,
a
kind
redox
molecular
junction
sp
c
metal‐covalent
organic
framework
(i.e.
Cu
3
‐BTDE‐COF)
has
been
prepared
through
connection
between
BTDE
serve
as
efficient
catalyst
in
light‐assisted
‐BTDE‐COF
with
redox‐ability,
visible‐light‐adsorption
region,
electron‐hole
separation
ability
endows
excellent
round‐trip
efficiency
(95.2
%)
an
ultralow
voltage
hysteresis
(0.18
V),
outperforming
Schiff
base
COFs
‐BTDA‐COF
‐DT‐COF)
majority
reported
catalysts.
Combined
theoretical
calculations
characterizations,
integration
centers,
thiazole
cyano
groups
possess
strong
adsorption/activation
Li
+
interaction/diffusion
boost
CRR/CER
related
battery
property.
Accounts of Chemical Research,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 21, 2025
ConspectusMetal-organic
frameworks
(MOFs)
and
covalent
organic
(COFs),
as
emerging
porous
crystalline
materials,
have
attracted
remarkable
attention
in
chemistry,
physics,
materials
science.
MOFs
are
constructed
by
metal
clusters
(or
ions)
linkers
through
coordination
bonds,
while
COFs
prepared
pure
building
blocks
via
bonds.
Because
of
the
nature
linkages,
their
own
shortcomings.
Typically,
relatively
weak
bond
strengths
bonds
lead
to
poor
chemical
stability
MOFs,
which
limits
practical
implementations.
On
other
hand,
due
strong
exhibit
rather
higher
under
harsh
conditions,
compared
MOFs.
However,
lack
open
sites
restricts
functionalization
application.
Therefore,
it
is
hypothesized
that
"cream-skimming"
would
address
these
drawbacks
produce
a
new
class
material,
namely,
metal-organic
(CMOFs),
with
unprecedented
structural
complexity
advanced
functionality.
The
CMOFs
reveal
synthetic
approach
for
preparation
reticular
materials.
Specifically,
ions
reacted
chelating
ligands
assemble
complexes
or
functional
reactive
(e.g.,
-CHO,
-NH2),
can
be
further
connected
form
networked
structures
dynamic
chemistry
(DCC).
isolated
complex
cluster
precursors
show
enhanced
prevents
decomposition
rearrangements
during
self-assembly
process
CMOFs.
Since
topology
preassembled
nodes
well-defined,
structure
readily
predicted
upon
directed
networking
Unaccessible
from
unstable
highly
ion/clusters
traditional
conditions
DCC
approach.
Moreover,
synergize
advantages
COFs,
containing
active
ensuring
various
interesting
properties,
linkages
allow
high
even
conditions.
In
past
few
years,
our
group
has
specifically
focused
on
development
general
strategies
coinage
(Cu,
Ag,
Au)-based
cyclic
trinuclear
units
(CTUs)
DCC.
CTUs
trigonal
planar
functionalized
sites,
such
-NH2
react
afford
Notably,
also
features
properties
including
metallophilic
attraction,
π-acidity/basicity,
luminescence,
redox
activity
catalytic
activity,
incorporated
into
we
envision
promising
platforms
not
only
novel
but
potential
applications
many
research
fields
gas
absorption/separation,
sensing,
full-color
display,
catalysis,
energy,
biological
applications.
this
Account,
summarize
recent
studies
CMOFs,
starting
linkage
topological
design,
transformation,
morphological
control,
fields.
We
discuss
future
opportunities
challenges
rapidly
developed
field
hope
Account
may
promote
scientific
discoveries
CMOF-based
technologies
future.