Angewandte Chemie,
Год журнала:
2023,
Номер
135(39)
Опубликована: Авг. 14, 2023
Abstract
Water
and
other
small
molecules
frequently
coordinate
within
metal‐organic
frameworks
(MOFs).
These
coordinated
may
actively
engage
in
mass
transfer,
moving
together
with
the
transport
molecules,
but
this
phenomenon
has
yet
to
be
examined.
In
study,
we
explore
a
unique
water
transfer
mechanism
UTSA‐280,
where
an
incoming
molecule
can
displace
for
transfer.
We
refer
process
as
“knock‐off”
mechanism.
Despite
UTSA‐280
possessing
one‐dimensional
channels,
knock‐off
enables
movement
along
two
axes,
effectively
simulating
pseudo‐three‐dimensional
Even
relatively
narrow
pore
width,
high
flux
membrane.
The
also
renders
superior
water/ethanol
diffusion
selectivity
pervaporation.
To
validate
mechanism,
conducted
1
H
2
solid‐state
NMR
on
after
adsorption
of
deuterated
water.
derived
potential
energy
diagrams
from
density
functional
theory
gain
atomic‐level
insight
into
direct‐hopping
mechanisms.
simulation
findings
reveal
that
barrier
is
marginally
lower
than
pathway,
implying
its
role
enhancing
UTSA‐280.
Chemical Society Reviews,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 25, 2024
The
design
and
synthesis
of
MOFs
have
evolved
from
traditional
large-scale
approaches
to
function-oriented
modifications,
recently
AI
predictions,
which
save
time,
reduce
costs,
enhance
the
efficiency
achieving
target
functions.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(7), С. 9068 - 9077
Опубликована: Фев. 12, 2024
Metal–organic
frameworks
(MOFs),
a
sort
of
crystalline
porous
coordination
polymers
composed
metal
ions
and
organic
linkers,
have
been
intensively
studied
for
their
ability
to
take
up
nonpolar
gas-phase
molecules
such
as
ethane
ethylene.
In
this
context,
interpenetrated
MOFs,
where
multiple
framework
nets
are
entwined,
considered
promising
materials
capturing
due
relatively
higher
stability
smaller
micropores.
This
study
explores
solvent-assisted
reversible
strategy
interpenetrate
deinterpenetrate
Cu(II)-based
MOF,
namely,
MOF-143
(noninterpenetrated
form)
MOF-14
(doubly
forms).
Interpenetration
was
achieved
using
protic
solvents
with
small
molecular
sizes
water,
methanol,
ethanol,
while
deinterpenetration
accomplished
Lewis-basic
solvent,
pyridine.
Additionally,
investigates
the
adsorptive
separation
ethylene,
which
is
significant
application
in
chemical
industry.
The
results
showed
that
exhibited
ethylene
uptakes
compared
noninterpenetrated
narrower
Furthermore,
we
demonstrate
pristine
displayed
selectivity
than
transformed
from
by
identifying
"fraction
micropore
volume"
key
factor
influencing
uptake.
These
findings
highlight
potential
controlled
transformations
between
anticipating
larger
MOF
crystals
micropores
crystallinity
will
be
more
suitable
selective
gas
capture
applications.
Chemical Communications,
Год журнала:
2023,
Номер
59(68), С. 10226 - 10242
Опубликована: Янв. 1, 2023
Metal-organic
framework
(MOF)-based
catalysts
are
outstanding
alternative
materials
for
the
chemical
transformation
of
greenhouse
and
toxic
gases
into
high-add-value
products.
MOF
exhibit
remarkable
properties
to
host
different
active
sites.
The
combination
catalytic
MOFs
is
mentioned
in
order
understand
their
application.
Furthermore,
main
reactions,
which
involve
CH4,
CO2,
NOx,
fluorinated
gases,
O3,
CO,
VOCs,
H2S,
highlighted.
centers
reaction
conditions
these
reactions
presented
discussed
mechanisms.
Interestingly,
implementing
as
gas-phase
a
great
opportunity
provide
new
alternatives
enhance
air
quality
our
planet.
ACS Catalysis,
Год журнала:
2024,
Номер
14(12), С. 9217 - 9223
Опубликована: Июнь 3, 2024
We
report
a
multifunctional
metal–organic
framework
(MOF)
photocatalyst
for
the
CO2
reduction
reaction
(CO2RR)
under
visible
light
irradiation
with
high
efficiency
(turnover
number
=
2638)
and
CO
selectivity
(97.0%).
The
short
distance
(6.6
Å)
between
bipyridine
sites
in
MOF
allows
integration
of
Ir
photosensitizers
Ni
catalysts
proximity,
thereby
enhancing
their
electron
transfer
photocatalytic
CO2RR.
Isolation
these
metal
centers
by
structure
prevents
deactivation,
leading
to
54
times
higher
CO2RR
activity
than
homogeneous
system
allowing
easy
recovery
use
five
consecutive
cycles
without
significant
loss
catalytic
activity.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(33), С. 43156 - 43170
Опубликована: Авг. 12, 2024
Metal-organic
frameworks
(MOFs)
are
composite
crystalline
materials
created
through
the
coordination
of
metal
ions
and
organic
ligands.
MOFs
have
attracted
extensive
attention
in
biomedical
field
based
on
advantages
internal
porosity,
customizable
facile
surface
modification.
This
review
examines
utilization
drug
delivery
systems,
focusing
research
progress
from
aspects
coloading
intelligent
responsive
carriers,
biological
macromolecule
stabilizers,
self-driving
micro/nanomotors,
multifunctional
living
carriers.
In
addition,
current
challenges
faces
also
discussed.
The
aims
to
provide
a
reference
for
further
application
as
advanced
systems.
Communications Materials,
Год журнала:
2024,
Номер
5(1)
Опубликована: Ноя. 8, 2024
Defect
engineering
has
developed
over
the
last
decade
to
become
an
inimitable
tool
with
which
shape
Metal-Organic
Framework
(MOF)
chemistry;
part
of
evolution
in
perception
MOFs
from
perfect,
rigid
matrices
dynamic
materials
whose
chemistry
is
shaped
as
much
by
imperfections
it
their
molecular
components.
However,
challenges
defect
characterisation
and
reproducibility
persist
and,
coupled
as-yet
opaque
role
for
synthetic
parameters
formation,
deny
chemists
full
potential
reticular
synthesis.
Herein
we
map
broad
implications
defects
have
on
MOF
properties,
highlight
key
explore
remarkable
ways
imperfection
enriches
chemistry.
Engineering
into
metal-organic
frameworks
a
strategy
grant
additional
properties
but
there
are
still
reproducibility.
Here,
this
Perspective
presents
benefits
framework
field.
Abstract
SU‐101
was
screened
for
the
acid‐catalyzed
ring‐opening
alcoholysis
of
cyclohexene
oxide.
Results
indicated
access
to
open
metal
sites
within
SU‐101,
a
fundamental
requirement
(Lewis
acid
Bi
+3
sites)
this
reaction.
In
addition,
exhibited
high
chemical
stability,
demonstrated
by
retaining
its
crystalline
structure
after
The
conversion
estimated
be
99.8,
96.8,
and
14.3
%
at
40
°C
methanol,
ethanol,
propanol,
respectively.
Also,
an
outstanding
catalytic
cyclability
performance
five
cycles
without
losing
activity.
