Chemistry - An Asian Journal,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 30, 2024
Abstract
The
control
of
the
sequential
self‐assembly
processes
highly
entangled
(Ag
3
L
2
)
n
(
=2,4,6,8)
and
Ag
21
12
coordination
polyhedra
using
side‐chain
effects
was
studied
via
introduction
linear
or
branched
side
chains
into
tripodal
ligands.
In
addition
to
changes
in
intermediate
polyhedral
species
affording
multi‐
pathway
process,
disruption
kinetic
observed,
thus
demonstrating
utility
steric
for
construction
3D‐entangled
molecular
materials
on
5
nm
scale
with
high
complexity.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(10), С. 6905 - 6911
Опубликована: Фев. 29, 2024
Heteroleptic
coordination
cages,
nonstatistically
assembled
from
a
set
of
matching
ligands,
can
be
obtained
by
mixing
individual
components
or
via
cage-to-cage
transformations
homoleptic
precursors.
Based
on
the
latter
approach,
we
here
describe
new
level
self-sorting
in
cage
systems,
namely,
'heteromeric
completive
self-sorting'.
Here,
two
heteroleptic
assemblies
type
Pd2A2B2
and
Pd2A2C2,
sharing
one
common
ligand
component
A
but
differing
other,
are
shown
to
coexist
solution.
This
reached
either
statistical
mixture
based
some
ligands
B
C
or,
alternatively,
following
first
step
integrative
giving
distinct
Pd2B2C2
intermediate.
While
subtle
enthalpic
factors
dictate
outcome
self-sorting,
found
that
it
is
controllable.
From
unique
three
demonstrate
transition
strict
forming
Pd2AB2C
heteromeric
give
Pd2A2C2
variation
ratio.
Cage-to-cage
were
followed
NMR
MS
experiments.
Single
crystal
X-ray
structures
for
cages
obtained,
impressively
highlighting
versatility
form
π-stacked
trans-figure-of-eight
arrangement
occupy
cis-edges
only
single
edge
Pd2AB2C.
study
paves
way
toward
control
populations
systems
chemistry
context
with
emerging
features
such
as
chemical
information
processing,
adaptive
guest
selectivity,
stimuli-responsive
catalytic
action.
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(21), С. 10380 - 10408
Опубликована: Янв. 1, 2024
Stemming
from
early
seminal
notions
of
molecular
recognition
and
encapsulation,
three-dimensional,
cavity-containing
capsular
compounds
assemblies
have
attracted
intense
interest
due
to
the
ability
modulate
chemical
physical
properties
species
encapsulated
within
these
confined
spaces
compared
bulk
environments.
With
such
a
diverse
range
covalent
motifs
non-covalent
(supramolecular)
interactions
available
assemble
building
blocks,
an
incredibly
wide-range
capsular-type
architectures
been
developed.
Furthermore,
synthetic
tunability
internal
environments
gives
chemists
opportunity
engineer
systems
for
uses
in
sensing,
sequestration,
catalysis
transport
molecules,
just
name
few.
In
this
tutorial
review,
overview
is
provided
into
design
principles,
synthesis,
characterisation,
structural
facets
coordination
cages,
porous
organic
supramolecular
capsules,
foldamers
mechanically
interlocked
molecules.
Using
recent
examples,
advantages
limitations
each
system
are
explored,
highlighting
their
application
various
tasks
functions.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(51)
Опубликована: Окт. 27, 2023
Metal-organic
cages
(MOCs)
are
popular
host
architectures
assembled
from
ligands
and
metal
ions/nodes.
Assembling
structurally
complex,
low-symmetry
MOCs
with
anisotropic
cavities
can
be
limited
by
the
formation
of
statistical
isomer
libraries.
We
set
out
to
investigate
use
primary
coordination-sphere
engineering
(CSE)
bias
selectivity
within
homo-
heteroleptic
Pd
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 20, 2024
Pd(II)-based
low-symmetry
coordination
cages
possessing
anisotropic
cavities
are
of
great
interest.
The
common
strategies
employed
to
achieve
such
utilize
either
more
than
one
type
symmetrical
ligands
(e.g.,
L
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(24)
Опубликована: Апрель 4, 2024
Abstract
While
metal‐mediated
self‐assembly
is
a
popular
technique
to
construct
discrete
nanosized
objects,
highly
symmetric
structures,
built
from
one
type
of
ligand
at
time,
are
dominating
reported
systems.
The
tailored
integration
set
different
ligands
requires
sophisticated
approaches
avoid
narcissistic
separation
or
formation
statistical
mixtures.
Here,
we
demonstrate
how
the
combination
three
structure‐guiding
effects
(metal‐templated
macrocyclization,
additional
bridging
and
shape‐complementarity)
based
on
Co(III)salphen
metal
nodes
allows
for
rational
high‐yielding
synthesis
structurally
complex,
lantern‐shaped
cages
with
up
four
differentiable
bridges.
Three
new
heteroleptic
coordination
dinuclear
macrocycles
were
synthesized
in
one‐pot
reaction
approach
fully
characterized,
including
single
crystal
X‐ray
analyses.
One
cage
groups
two
same
ligands,
another
around
Co
2
‐bis‐salphen
ring.
In
most
complex
structure,
this
ring
unsymmetric,
rendering
all
connections
between
centers
distinguishable.
assembly
Pd(II)
has
been
shown
be
dynamic,
beneficial
cage‐to‐cage
transformations,
cascades
adaptive
systems,
herein
introduced
kinetically
more
inert
will
advantageous
applications
enzyme‐like
catalysis
molecular
machinery
that
require
enhanced
structural
chemical
stability.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(22), С. 15438 - 15445
Опубликована: Май 27, 2024
Dynamic
noncovalent
and
covalent
chemistries
have
enabled
the
constitutional
modulation
of
chemical
entities
within
dynamic
systems.
The
switching
between
order
disorder,
i.e.,
self-sorted
unsorted
states
libraries,
remains
challenging.
Herein,
we
study
adaptive
behaviors
a
library
imine
macrocycles
generated
from
dialdehydes
diamines,
seeking
ways
to
exert
control
over
sorting
unsorting
processes.
distribution
constituents
in
present
is
modulated
response
internal
external
effectors
(e.g.,
time,
metal
cations,
fuels),
resulting
transient
amplification
out-of-equilibrium
states.
showcases
higher
complexity
systems
subject
multiple
adaptation
through
interconversion
singularity/order
diversity/disorder.
Abstract
Chirality
in
confined
nanospaces
has
brought
some
new
insights
into
chirality
transfer,
amplification,
and
chiroptical
properties.
However,
switching,
which
is
a
common
phenomenon
biological
systems,
never
been
realized
environments.
Herein,
we
report
type
of
hexagonal
metallacages
that
shows
good
host–guest
interactions
with
ethoxy
pillar[5]arene
pillar[6]arene,
as
confirmed
by
single‐crystal
X‐ray
analysis.
Importantly,
when
chiral
pillar[5]arene‐based
molecular
universal
joint
(MUJ)
used
the
guest,
complexation
would
drive
alkyl
ring
MUJ
flip
from
outside
to
inside
cavity
its
unit,
enables
configuration
change
along
inversion
MUJ.
Moreover,
facilitates
transfer
guests
hosts,
giving
circularly
polarized
luminescence
system.
This
study
provides
unique
metallacage‐pillararene
recognition
motif
for
switching
planar
pillararenes,
will
promote
construction
systems
tunable
advanced
applications.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(36), С. 24901 - 24910
Опубликована: Авг. 28, 2024
The
effect
of
host–guest
interactions
on
the
chemistry
encapsulated
molecules
is
a
fascinating
field
research
that
has
gained
momentum
in
recent
years.
Much
work
this
been
focused
such
catalysis
and
photoluminescence
dyes.
However,
related
photoinduced
processes,
as
photoregulated
oxidase-mimicking
activity,
not
explored
much.
Herein,
we
report
unique
example
enhancement
oxidase-like
activity
benzothiadiazole
dye
(G1)
water
through
encapsulation
within
M8L4
molecular
barrel
(1).
Favorable
helped
guest
G1
to
have
better
electron
transfer
oxygen
leading
increased
production
superoxide
radical
anions
activity.
Furthermore,
inside
1
also
caused
change
redox
potentials
which
after
produced
oxidizing
agent
than
free
G1.
These
phenomena
combined
enhance
upon
cage
1.
present
demonstrates
processes.
