Abstract
Hydrogen‐bonded
organic
frameworks
(HOFs)
are
a
type
of
crystalline
porous
materials
self‐assembled
from
or
metal–organic
building
blocks
via
intermolecular
hydrogen
bonding,
which
have
received
increasing
attention
due
to
their
reversible
and
flexible
bonding
properties.
Currently,
it
remains
challenge
construct
HOFs
based
on
complex
cages
as
molecular
blocks.
Herein,
3D
HOF
(
PgC‐HOF
)
featuring
honeycomb‐shaped
channels
is
crafted
utilizing
sizable
waterwheel‐like
PgC‐noria
molecule
cage.
The
pivotal
role
multipoint
interactions
in
upholding
structural
integrity
stability
underscored
by
the
possession
36
phenolic
hydroxyl
groups
.
Interestingly,
introduction
calcium
ions
into
reaction
system
results
formation
framework
PgC‐MOF
),
with
channel
dimensions
6.8
9.1
Å.
Furthermore,
I
2
sorption/release
experiments
conducted
,
achieving
an
increase
optimal
adsorption
amount
1.45
2.19
g
−1
transition
irreversible
adsorbent
adsorbent.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 26, 2025
Abstract
The
stability
of
metal–organic
frameworks
(MOFs)
is
crucial
for
their
practical
applications.
Open
metal
sites
(OMS),
essential
active
in
various
applications,
also
significantly
impact
stability,
yet
role
remains
insufficiently
understood.
This
study
investigates
MOF‐808,
a
zirconium‐based
MOF
with
six
OMS
per
cluster,
revealing
its
higher
liquid
water
compared
to
gaseous
water.
Coordination
formic
acid
at
notably
enhances
while
recrystallization
experiments
elucidate
the
mechanisms
instability
Thermal
determined
by
decomposition
temperature
capping
ligands
on
OMS.
In
liquid‐phase
adsorption
high‐value
bio‐oil
compound
creosol,
uptake
results
demonstrate
that
ligand
polarity
modulates
pore
hydrophilicity/hydrophobicity,
affecting
selectivity.
Remarkably,
MOF‐808
capped
pentafluorobenzoic
achieves
100%
selective
occupancy
during
adsorption.
highlights
as
critical
and
emphasizes
improving
tuning
properties.
It
underscores
nonstructural
modifications
powerful
strategy
enhance
performance,
broadening
application
potential
challenging
environments.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(15), С. 18006 - 18013
Опубликована: Июль 31, 2024
Spatial
functionalization
of
hierarchically
mesoporous
metal–organic
frameworks
(HMMOFs)
in
a
controllable
manner
is
highly
desirable
yet
challenging.
Herein,
microporous
and
spaces
as
well
the
external
surface
nanoscale
UiO-66-NH2
MOFs
were
site-separately
modified
to
endow
them
with
additional
functionalities.
Given
pore-filling
effect
soft
templates,
folic
acid
ligand
was
successfully
grafted
on
outer
without
reducing
pore
size
available
volumes,
making
developed
sensing
nanoprobe
competent
specifically
identify
cancer
cells.
The
support
not
only
effectively
protected
encapsulated
enzymes
but
also
facilitated
proximity
between
substrates
by
virtue
spatial
confinement
effect.
Cu2+
ions
introduced
skeleton
could
synergistically
activate
activity
horseradish
peroxidase
immobilized
mesopores.
Thanks
such
enhanced
enzymatic
functionalities,
designed
quantitatively
check
out
FR-overexpressed
cells
colorimetric
visible
way.
Through
deliberately
screening
different
functionalities
specific
locations
HMMOFs,
model
expected
set
guideline
for
design
multiple-functional
diagnostic
platform
detection
various
cancers.
Journal of Materials Chemistry C,
Год журнала:
2024,
Номер
12(38), С. 15401 - 15407
Опубликована: Янв. 1, 2024
A
remarkable
thermally-robust
and
stable
metal–organic
framework
with
lanthanide
cations
is
obtained
by
the
in
situ
formation
of
a
polymeric
phosphonate-based
organic
ligand.
