Chemical Communications,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 4, 2024
This
manuscript
explores
the
post-synthetic
modification
(PSM)
of
amine-functionalized
porous
coordination
cages,
specifically
focusing
on
formation
imine
bonds
through
reactions
with
aldehydes.
Targeting
various
cage
topologies,
including
zirconium-,
magnesium-,
and
molybdenum-based
structures,
we
demonstrate
tunability
solubility
porosity
selective
functionalization
where
proximity
amine
groups
parent
impacts
extent
modification.
The
work
highlights
reversible
nature
formation,
offering
potential
applications
in
switching
mixed-metal
solid
synthesis.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(45), P. 30958 - 30965
Published: Nov. 4, 2024
A
key
feature
of
coordination
cages
is
the
dynamic
nature
their
coordinative
bonds,
which
facilitates
synthesis
complex
polyhedral
structures
and
post-assembly
modification.
However,
this
can
limit
cage
stability.
Increasing
robustness
important
for
real-world
use
cases.
Here
we
introduce
a
double-bridging
strategy
to
increase
stability,
where
designed
pairs
bifunctional
subcomponents
combine
generate
rectangular
tetratopic
ligands
within
pseudo-cubic
Zn8L6
cages.
These
withstand
transmetalation,
addition
competing
ligands,
nucleophilic
imines,
under
conditions
single-bridged
congeners
decompose.
Our
approach
not
only
increases
stability
while
maintaining
structure,
but
also
enables
incorporation
additional
functional
units
in
proximity
cavity.
The
larger
cages,
are
inaccessible
as
congeners.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 18, 2024
A
mixed-ligand
synthesis
yields
zirconium-based
cages
with
tunable
functional
group
ratios,
enabling
diverse
ligand
incorporation,
including
previously
elusive
ones,
via
a
straightforward
one-pot
strategy.
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 4, 2024
This
manuscript
explores
the
post-synthetic
modification
(PSM)
of
amine-functionalized
porous
coordination
cages,
specifically
focusing
on
formation
imine
bonds
through
reactions
with
aldehydes.
Targeting
various
cage
topologies,
including
zirconium-,
magnesium-,
and
molybdenum-based
structures,
we
demonstrate
tunability
solubility
porosity
selective
functionalization
where
proximity
amine
groups
parent
impacts
extent
modification.
The
work
highlights
reversible
nature
formation,
offering
potential
applications
in
switching
mixed-metal
solid
synthesis.