Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(18)
Published: March 3, 2023
Abstract
Self‐assembly
of
a
flexible
tritopic
aniline
and
3‐substituted
2‐formylpyridine
subcomponents
around
iron(II)
templates
gave
rise
to
low‐spin
Fe
II
4
L
capsule,
whereas
high‐spin
3
2
sandwich
species
formed
when
sterically
hindered
6‐methyl‐2‐formylpyridine
was
used.
The
cage
adopted
new
structure
type
with
S
symmetry,
having
two
mer
‐
Δ
Ʌ
metal
vertices,
as
confirmed
by
NMR
X‐ray
crystallographic
analysis.
flexibility
the
face‐capping
ligand
endows
resulting
framework
conformational
plasticity,
enabling
it
adapt
structurally
from
T
or
C
symmetry
upon
guest
binding.
also
displayed
negative
allosteric
cooperativity
in
simultaneously
binding
different
guests
within
its
cavity
at
apertures
between
faces.
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(13), P. 6694 - 6734
Published: Jan. 1, 2024
Delayed
luminescence
(DF),
including
phosphorescence
and
thermally
activated
delayed
fluorescence
(TADF),
circularly
polarized
(CPL)
exhibit
common
broad
application
prospects
in
optoelectronic
displays,
biological
imaging,
encryption.
Thus,
the
combination
of
is
attracting
increasing
attention.
The
encapsulation
guest
emitters
various
host
matrices
to
form
host-guest
systems
has
been
demonstrated
be
an
appealing
strategy
further
enhance
and/or
modulate
their
luminescence.
Compared
with
conventional
liquid
crystals,
polymers,
supramolecular
matrices,
porous
crystalline
frameworks
(PCFs)
metal-organic
(MOFs),
covalent-organic
(COFs),
zeolites
hydrogen-bonded
organic
(HOFs)
can
not
only
overcome
shortcomings
such
as
flexibility
disorder
but
also
achieve
ordered
guests
long-term
stability
chiral
structures,
providing
new
promising
platforms
for
development
DF
CPL.
In
this
review,
we
provide
a
comprehensive
critical
summary
recent
progress
photochemistry
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(44)
Published: Aug. 24, 2022
Aiming
at
the
construction
of
novel
circularly
polarized
luminescence
(CPL)
switches
with
multiple
switchable
emission
states
and
high
dissymmetry
factors
(glum
),
topologically
chiral
[2]catenanes
were
employed
as
key
platform
to
construct
a
multistate
CPL
switching
system.
Taking
advantage
precise
co-conformation
regulations
resultant
pyrene-functionalized
under
different
external
stimuli,
reversible
transformations
between
three
performances,
i.e.
initial
"closed"
form
|glum
|
value
0.012,
"open"
an
almost
complete
turn-off
emission,
"protonated"
boosted
0.022,
successfully
realized.
This
study
demonstrates
successful
not
only
first
topological
chirality-based
switch,
but
also
bidirectional
thus
providing
promising
for
materials.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(34)
Published: June 10, 2022
Abstract
We
herein
report
the
preparation
of
a
series
hexaphenylbenzene
(HPB)‐based
deep
blue‐emissive
metallacages
via
multicomponent
coordination‐driven
self‐assembly.
These
feature
prismatic
structures
with
HPB
derivatives
as
faces
and
tetracarboxylic
ligands
pillars,
evidenced
by
NMR,
mass
spectrometry
X‐ray
diffraction
analysis.
Light‐harvesting
systems
were
further
constructed
employing
donor
naphthalimide
derivative
(NAP)
acceptor,
owing
to
their
good
spectral
overlap.
The
judiciously
chosen
metallacage
serves
antenna,
providing
suitable
energy
excite
non‐emissive
NAP,
thus
resulting
in
bright
emission
for
NAP
solid
state.
This
study
provides
type
HPB‐based
emissive
explores
applications
donors
light
up
fluorophores
state,
which
will
advance
development
useful
luminescent
materials.
Coordination Chemistry Reviews,
Journal Year:
2022,
Volume and Issue:
472, P. 214786 - 214786
Published: Sept. 6, 2022
Lanthanide
organic
polyhedral
cage
complexes
are
a
class
of
supramolecular
compounds
that
present
exciting
opportunities
in
applications
ranging
from
sensing
to
catalysis
and
magnetism.
Metal
polyhedra
incorporating
transition
metal
vertices
bridged
by
ligands
have
been
extensively
studied.
By
contrast
analogous
lanthanide
complexes,
which
additional
benefits
beyond
those
their
counterparts,
remain
an
underrepresented
supramolecule.
One
unique
property
cages
is
the
luminescence
properties
bestowed
ions
offer
interesting
imaging
applications,
whilst
large
ionic
radii
trivalent
enables
formation
novel
structures
with
incorporate
ancillary
not
possible
for
structures.
This
review
summarizes
key
developments
synthesis
characterization
cages,
allowing
general
structural
trends
emerge
highlights
already
demonstrated
these
complexes.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(39)
Published: Aug. 5, 2022
The
structures
of
the
crosslinks
in
supramolecular
polymer
networks
play
an
important
role
on
their
properties
and
functions.
Herein,
emissive
metallacages
are
used
as
to
prepare
metallacage-cored
polyurethanes.
mechanical
including
storage
modulus,
toughness,
Young's
modulus
breaking
strength
polymers
greatly
enhanced
with
increase
crosslinking
densities.
Moreover,
such
not
only
exhibit
good
fluorescence
solid
state,
but
also
show
self-healing
shape
memory
owing
dynamic
reversible
non-covalent
bonds
structures.
This
study
offers
a
convenient
strategy
metallacage-crosslinked
networks,
explores
applications
materials,
which
will
promote
smart
materials.
InfoMat,
Journal Year:
2022,
Volume and Issue:
5(3)
Published: Dec. 26, 2022
Abstract
Circularly
polarized
luminescence
(CPL)
is
the
emission
featured
spatial
orientation
equivalent
to
circular
dichroism.
Owning
unique
magnetic
dipole‐allowed
but
electric‐dipole‐forbidden
4
f
→
transitions,
chiral
lanthanide
complexes
have
been
recognized
as
ideal
candidates
achieve
unprecedented
dissymmetry
factor
(
g
lum
).
Their
inherent
transition
can
be
partly
allowed,
through
rational
design
of
coordination
ligands
lower
surrounding
symmetry,
further
endowing
them
with
relatively
high
quantum
yields
(QYs).
Moreover,
blossom
supramolecular
chemistry
in
allows
for
construction
discrete
oligomers
and
hierarchical
assemblies,
rendering
enhanced
chiroptical
activities.
Here,
we
deploy
this
review
by
summarizing
recent
advances
properties
complexes,
spanning
multiple
scales
from
isolated
mononuclear
individuals,
polynuclear
oligomers,
infinite
assemblies.
We
first
introduce
basic
concept
several
important
parameters
assessment
CPL
activity.
Then,
coordinated
different
types
antennas,
along
chirality
transfer
induction
achiral
were
discussed.
Next,
systematical
discussion
on
assemblies
was
presented.
Meanwhile,
state‐of‐the‐art
applications
CPL‐active
revisited.
end
up
conclusion
prospects,
involving
ligands,
directed
hierarchically
precise
self‐assembly,
extending
complexes.
image
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(13), P. 7446 - 7453
Published: March 22, 2023
Herein,
a
series
of
face-capped
(Tr2M3)4L4
(Tr
=
cycloheptatrienyl
cationic
ring;
M
metal;
L
organosulfur
ligand)
tetrahedral
cages
1-3
functionalized
with
12
appended
crown
ether
moieties
were
designed
and
synthesized.
The
reversible
binding
ammonium
cations
peripheral
to
adjust
internal
guest-binding
was
realized.
Combination
bisammonium
linker
cage
3
led
the
formation
supramolecular
gel
SPN1
via
host-guest
interactions
between
salts.
obtained
exhibited
multiple-stimuli
responsiveness,
injectability,
excellent
self-healing
properties
could
be
further
developed
SPN1-based
drug
delivery
system.
In
addition,
storage
modulus
20
times
higher
than
that
model
without
Pd-Pd
bonded
blocks,
had
better
compared
latter,
demonstrating
importance
such
in
improving
mechanical
strength
losing
dynamic
material.
cytotoxicity
vitro
drug-loaded
(doxorubicin
or
methotrexate)
significantly
improved
free
drugs.
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(9), P. 5570 - 5577
Published: Feb. 27, 2023
A
tetrahedral
FeII4L4
cage
assembled
from
the
coordination
of
triangular
chiral,
face-capping
ligands
to
iron(II).
This
exists
as
two
diastereomers
in
solution,
which
differ
stereochemistry
their
metal
vertices,
but
share
same
point
chirality
ligand.
The
equilibrium
between
these
was
subtly
perturbed
by
guest
binding.
perturbation
correlated
with
size
and
shape
fit
within
host;
insight
interplay
provided
atomistic
well-tempered
metadynamics
simulations.
understanding
thus
gained
stereochemical
impact
on
binding
enabled
design
a
straightforward
process
for
resolution
enantiomers
racemic
guest.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(36)
Published: July 15, 2023
A
series
of
covalent
organic
cages
built
from
fluorophores
capable
aggregation-induced
emission
(AIE)
were
elegantly
prepared
through
the
reduction
preorganized
M2
(LA
)3
(LB
)2
-type
metallacages,
simultaneously
taking
advantage
synthetic
accessibility
and
well-defined
shapes
sizes
good
chemical
stability
as
well
bright
AIE
fluorophores.
Moreover,
could
be
further
post-synthetically
modified
into
an
amide-functionalized
cage
with
a
higher
quantum
yield.
Furthermore,
these
presented
proved
to
energy
donors
used
construct
light-harvesting
systems
employing
Nile
Red
acceptor.
These
displayed
efficient
transfer
relatively
high
antenna
effect,
which
enabled
their
use
photocatalysts
for
dehalogenation
reaction.
This
research
provides
new
avenue
development
luminescent
photocatalysis.
