Chemistry - A European Journal,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 24, 2024
Abstract
The
construction
of
supramolecular
networks
with
novel
crosslinks
is
great
significance
in
expanding
their
chemical
structures
and
exploring
advanced
functions.
Herein,
we
prepare
a
type
[2]catenane‐cored
based
on
the
crosslinking
polyethylene
glycol
(PEG)
using
heterometallic
[2]catenane
unit.
By
adjusting
molecular
weight
PEG,
solubility
can
be
tuned
gels
are
formed
low
PEG.
introduction
offers
good
antibacterial
properties
owing
to
synergistic
antimicrobial
activity
Pt(II)
Cu(I)
ions
[2]catenane.
This
study
provides
simple
efficient
strategy
for
constructing
topological
as
materials,
which
will
promote
structural
design
biological
applications
networks.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(14)
Опубликована: Фев. 2, 2024
Abstract
The
development
of
novel
materials
for
highly
efficient
and
selective
photocatalysis
is
crucial
their
practical
applications.
Herein,
we
employ
the
host‐guest
chemistry
porphyrin‐based
metallacages
to
regulate
generation
reactive
oxygen
species
further
use
them
photocatalytic
oxidation
benzyl
alcohols.
Upon
irradiation,
sole
metallacage
(
6
)
can
generate
singlet
1
O
2
effectively
via
excited
energy
transfer,
while
its
complex
with
C
70
⊃C
opens
a
pathway
electron
transfer
promote
formation
superoxide
anion
(O
⋅
−
),
producing
both
.
addition
4,4′‐bipyridine
(BPY)
forms
more
stable
⊃BPY)
coordination
Zn‐porphyrin
faces
BPY,
which
drives
fullerenes
out
cavities
restores
ability
generation.
Therefore,
alcohols
are
oxidized
into
aldehydes
upon
irradiation
in
presence
or
⊃BPY,
they
benzoic
acids
when
employed
as
photosensitizing
agent.
This
study
demonstrates
strategy
that
utilizes
photooxidation
reactions,
could
utilization
related
complexes
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(23), С. 15787 - 15795
Опубликована: Май 13, 2024
The
encapsulation
of
different
guest
molecules
by
their
recognition
domains
proteins
leads
to
selective
binding,
catalysis,
and
transportation.
Synthetic
hosts
capable
selectively
binding
guests
in
cavities
mimic
the
function
are
highly
desirable
but
challenging.
Here,
we
report
three
ladder-shaped,
triple-cavity
metallacages
prepared
multicomponent
coordination-driven
self-assembly.
Interestingly,
porphyrin-based
metallacage
is
heteroleptic
fullerenes
(C60
or
C70)
coronene
using
its
cavities,
allowing
distinct
allosteric
upon
addition
C60
C70.
Owing
affinities
one
molecule
central
cavity
two
units
side
while
encapsulating
C70
cavity.
rational
design
multicavity
assemblies
that
enable
will
guide
further
advanced
supramolecular
constructs
with
tunable
properties.
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Июнь 25, 2024
The
development
of
supramolecular
hosts
which
can
efficiently
encapsulate
photosensitizers
to
improve
the
photodynamic
efficacy
holds
great
promise
for
cancer
therapy.
Here,
we
report
two
perylene
diimide-based
metallacages
that
form
stable
host-guest
complexes
with
planar
conjugated
molecules
including
polycyclic
aromatic
hydrocarbons
and
(hypocrellin
A).
Such
complexation
not
only
prevents
aggregation
in
aqueous
environments,
but
also
offers
fluorescence
resonance
energy
transfer
(FRET)
from
metallacage
further
singlet
oxygen
generation
(Φ
Angewandte Chemie,
Год журнала:
2024,
Номер
136(14)
Опубликована: Фев. 2, 2024
Abstract
The
development
of
novel
materials
for
highly
efficient
and
selective
photocatalysis
is
crucial
their
practical
applications.
Herein,
we
employ
the
host‐guest
chemistry
porphyrin‐based
metallacages
to
regulate
generation
reactive
oxygen
species
further
use
them
photocatalytic
oxidation
benzyl
alcohols.
Upon
irradiation,
sole
metallacage
(
6
)
can
generate
singlet
1
O
2
effectively
via
excited
energy
transfer,
while
its
complex
with
C
70
⊃C
opens
a
pathway
electron
transfer
promote
formation
superoxide
anion
(O
⋅
−
),
producing
both
.
addition
4,4′‐bipyridine
(BPY)
forms
more
stable
⊃BPY)
coordination
Zn‐porphyrin
faces
BPY,
which
drives
fullerenes
out
cavities
restores
ability
generation.
Therefore,
alcohols
are
oxidized
into
aldehydes
upon
irradiation
in
presence
or
⊃BPY,
they
benzoic
acids
when
employed
as
photosensitizing
agent.
This
study
demonstrates
strategy
that
utilizes
photooxidation
reactions,
could
utilization
related
complexes
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.
Chemical Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Novel
AIEgen-branched
rotaxane
dendrimers
with
up
to
42
precisely
distributed
TPE
units
were
synthesized,
enabling
the
construction
of
artificial
LHSs
that
exhibit
generation-dependent
photocatalytic
performance
in
C–H
bond
functionalization.
Chemistry - A European Journal,
Год журнала:
2024,
Номер
30(43)
Опубликована: Май 29, 2024
Abstract
Metal‐organic
frameworks
(MOFs)
and
metal‐organic
cages
(MOCs)
have
garnered
significant
attention
as
promising
photocatalysts
due
to
their
tunable
chemical
structures
integrated
multifunctionality.
To
increase
the
photocatalytic
efficiency,
strategies
like
ligand
functionalization,
introducing
additional
catalytic
sites,
doping
or
encapsulating
photosensitizers
been
explored
for
both
MOFs
MOCs.
This
concept
review
focuses
on
recent
advancements
in
utilizing
MOCs
hydrogen
production,
highlighting
unique
characteristics
respective
mechanisms
this
field.
Moreover,
it
outlines
current
challenges
prospects
faced
by
MOCs,
offering
an
outlook
future
domain.
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.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 20, 2024
The
concept
of
pore
space
partition
has
emerged
as
an
effective
strategy
for
developing
improved
coordination-based
supramolecular
porous
materials
with
exceptional
performance.
Herein,
we
report
that
a
water-soluble
self-assembled
tetrahedral
cage
1
partitioned
cavity
shown
excellent
performance
multifunctional
extractant.
results
show
this
unique
can
efficiently
separate
halogenated
adamantanes,
adamantane
isomers,
and
polycyclic
aromatic
hydrocarbons.
Furthermore,
the
influence
cavity-partitioned
on
electrochemical
properties
redox-active
molecules
electrochemically
driven
reversible
host-guest
process
also
been
demonstrated.
findings
offer
valuable
insights
into
design
development
new
type
controlled
phase
separation
tailored
properties.
