Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 2, 2025
Visualizing
the
sliding
dynamics
of
a
topological
network
can
provide
critical
insight
into
determining
design
and
properties
mechanically
interlocked
materials.
Although
several
auxiliary
techniques
have
been
proposed
to
infer
microscopic
motion
rotaxanes,
employing
intuitive
convenient
methods
explore
polymer
remains
significant
challenge.
Herein,
this
work
introduces
(MIN)
patterned
surfaces
for
visualizing
regulating
process
[2]rotaxane
units
through
evolution
surface
wrinkles.
Upon
photodimerization
anthracene-functionalized
chain,
wrinkle
be
formed
after
thermal
treatment
subsequent
cooling
room
temperature.
Specifically,
cross-linked
films
exhibit
visible
changes
in
topography
disruption
host-guest
recognition
by
alkaline
stimuli.
Moreover,
leveraging
unique
mechanical
wrinkles,
we
prolonged
amplified
originally
extremely
transient
difficult-to-detect
rotaxane
terms
time
scale.
Through
statistical
analysis
morphology,
were
able
correspondingly
deconstruct
three
processes
motion:
(I)
unrestricted
rapid
following
dissociation;
(II)
restricted
sliding;
(III)
termination
sliding.
The
novel
approach
propose
opens
new
avenue
studying
molecular
materials,
facilitating
advancement
application
structures.
In
addition
using
macroscopic
patterns
visualize
motion,
molecules
also
used
regulate
patterns.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 24, 2025
Abstract
Excellent
multifunctional
platforms
for
cancer
diagnosis
and
treatment
are
highly
desirable.
Herein,
nanocomposites
constructed
by
utilizing
Mn
2+
to
coordinate
the
imidazole
moiety
anchored
on
CuO
2
nanoparticles
through
cyclodextrin‐adamantane
interaction.
The
encapsulated
(NPs)
can
generate
hydrogen
peroxide
(H
O
)
at
tumor
sites
under
acidic
conditions
upon
decomposition,
which
is
further
turned
into
oxygen
(O
catalysis,
facilitating
both
ultrasound
magnetic
resonance
imaging
(MRI).
Moreover,
proposed
nanomedicine
enhances
reactive
species
(ROS)
generation
depletes
glutathione
(GSH),
leading
increased
lipid
peroxidation
(LPO)
effective
ferroptosis‐mediated
therapy.
Such
a
strategy
presents
promising
approach
development
of
theranostics
imaging‐guided
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(16), P. 19473 - 19480
Published: Aug. 14, 2024
Two
supramolecular
ionic
nanomaterials
(SINs)
were
successfully
prepared
by
multidentate
imidazolium
organic
salts
and
acid
via
self-assembly
(ISA),
which
is
formed
tetraphenylethylene
(TPE)-based
(TPE-COS
TPE-C16OS)
4,4′,4″,4‴-(ethene-1,1,2,2-tetrayl)tetrabenzenesulfonic
(TPE-SO3H)
in
MeOH.
These
SINs
exhibited
high
thermal
stability
are
insoluble
solvents.
Furthermore,
as
fluorescence
sensors,
they
showed
sensitivity
selectivity
the
detection
of
nitroaromatic
explosives,
especially
for
trinitrophenol
(TNP);
linear
range
SIN-1
SIN-2
was
0.4–128
μM
1–128
μM;
their
λex
set
340
350
nm;
λem
489
458
related
limit
0.87
0.42
μM,
respectively.
The
quenching
mechanism
TNP
synergistic
effect
energy
transfer,
inner
filter,
photoelectron
transfer.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 23, 2024
Abstract
As
a
unique
property
of
the
interlocked
structures,
rotaxane
allows
for
intramolecular
motions
between
its
wheel
and
axle
components.
Introduction
rotaxanes
into
polymers
can
endow
them
with
distinctive
macroscopic
features
outstanding
mechanical
properties.
Here,
we
prepare
copillar[5]arene
hydroxyl
an
amino‐group
on
each
end,
which
spontaneously
form
pseudo[1]rotaxane
through
hydrogen
bonds.
This
possesses
releasable
extra
alkyl
chain,
is
then
incorporated
linear
polyurethane
by
reacting
diisocyanate
to
elastomers
spring‐like
structures.
The
results
stress‐strain
test
dynamic
analysis
all
indicate
that
sliding
part
in
polymer
skeleton
greatly
dissipate
energy,
endows
higher
toughness
better
fatigue
resistance.
Moreover,
addition
moderate
amount
cuprous
bromide
cuprous‐thioether
coordination
further
improve
Organic Letters,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 30, 2024
Herein,
we
report
the
synthesis
of
a
novel
carbaporphyrin
incorporating
perylene
diimide
(PDI)
and
dipyrromethane
units.
The
twisted
plane
PDI
subunits
imbues
with
intriguing
conformational
chirality
stable
chiroptical
properties.
Both
experimental
theoretical
studies
reveal
that
unique
properties
arise
from
rigidly
conjugated
macrocyclic
architecture
reduced
interchromophoric
distance.
This
work
successfully
integrates
PDIs
into
carbaporphyrins,
thereby
expanding
their
structural
diversity
functional
potential.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(27)
Published: April 16, 2024
Foldamer
is
a
scaled-down
version
of
coil
spring,
which
can
absorb
and
release
energy
by
conformational
change.
Here,
polymer
networks
with
high
density
molecular
springs
were
developed
employing
anion-coordination-based
foldamers
as
the
monomer.
The
coiling
foldamer
controlled
oligo(urea)
ligands
coordinating
to
chloride
ions;
subsequently,
folding
unfolding
conformations
endow
network
excellent
dissipation
toughness.
mechanical
performance
corresponding
shows
dramatic
increase
from
P-L
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(27)
Published: April 16, 2024
Abstract
Foldamer
is
a
scaled‐down
version
of
coil
spring,
which
can
absorb
and
release
energy
by
conformational
change.
Here,
polymer
networks
with
high
density
molecular
springs
were
developed
employing
anion‐coordination‐based
foldamers
as
the
monomer.
The
coiling
foldamer
controlled
oligo(urea)
ligands
coordinating
to
chloride
ions;
subsequently,
folding
unfolding
conformations
endow
network
excellent
dissipation
toughness.
mechanical
performance
corresponding
shows
dramatic
increase
from
P‐L
2U
Cl
(non‐folding),
4U
(a
full
turn),
then
6U
(1.5
turns),
in
terms
strength
(2.62
MPa;
14.26
22.93
MPa),
elongation
at
break
(70
%;
325
352
%),
Young's
modulus
(2.69
63.61
141.50
toughness
(1.12
MJ/m
3
;
21.39
49.62
),
respectively,
also
better
than
those
without
anion
centers
non‐foldamer
based
counterparts.
Moreover,
enhanced
most
molecular‐spring
networks.
Thus,
an
effective
strategy
for
designing
high‐performance
materials
presented.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 23, 2024
Abstract
As
a
unique
property
of
the
interlocked
structures,
rotaxane
allows
for
intramolecular
motions
between
its
wheel
and
axle
components.
Introduction
rotaxanes
into
polymers
can
endow
them
with
distinctive
macroscopic
features
outstanding
mechanical
properties.
Here,
we
prepare
copillar[5]arene
hydroxyl
an
amino‐group
on
each
end,
which
spontaneously
form
pseudo[1]rotaxane
through
hydrogen
bonds.
This
possesses
releasable
extra
alkyl
chain,
is
then
incorporated
linear
polyurethane
by
reacting
diisocyanate
to
elastomers
spring‐like
structures.
The
results
stress‐strain
test
dynamic
analysis
all
indicate
that
sliding
part
in
polymer
skeleton
greatly
dissipate
energy,
endows
higher
toughness
better
fatigue
resistance.
Moreover,
addition
moderate
amount
cuprous
bromide
cuprous‐thioether
coordination
further
improve
