Abstract
Superparamagnetic
iron
oxide
nanoparticles
(SPIONs)
have
attracted
wide
attention
due
to
their
promising
applications
in
biomedicine,
chemical
catalysis,
and
magnetic
memory
devices.
In
this
work,
the
force
is
measured
between
a
single
SPION
coated
with
chiral
molecules
ferromagnetic
substrate
by
atomic
microscopy
(AFM),
magnetized
either
toward
or
away
from
approaching
AFM
tip.
The
depends
on
handedness
of
adsorbed
direction
magnetization
substrate.
By
inserting
nm‐scale
spacing
layers
it
shown
that
has
short‐range
monopole‐like
field.
A
theoretical
framework
for
nature
field
provided.
Chemical Reviews,
Год журнала:
2024,
Номер
124(4), С. 1950 - 1991
Опубликована: Фев. 16, 2024
Since
the
initial
landmark
study
on
chiral
induced
spin
selectivity
(CISS)
effect
in
1999,
considerable
experimental
and
theoretical
efforts
have
been
made
to
understand
physical
underpinnings
mechanistic
features
of
this
interesting
phenomenon.
As
first
formulated,
CISS
refers
innate
ability
materials
act
as
filters
for
electron
transport;
however,
more
recent
experiments
demonstrate
that
displacement
currents
arising
from
charge
polarization
molecules
lead
without
need
net
flow.
With
its
identification
a
fundamental
connection
between
symmetry
materials,
promises
profound
ubiquitous
implications
existing
technologies
new
approaches
answering
age
old
questions,
such
homochiral
nature
life.
This
review
begins
with
discussion
different
methods
measuring
then
provides
comprehensive
overview
known
exhibit
CISS-based
phenomena
before
proceeding
identify
structure-property
relations
delineate
leading
models
effect.
Next,
it
identifies
some
physics,
chemistry,
biology.
The
ends
critical
assessment
field
comments
future
outlook.
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Anion
dimerization
poses
a
significant
challenge
for
the
application
of
Li-rich
cathode
materials
(LCMs)
in
high-energy-density
Li-ion
batteries
because
its
deleterious
effects,
including
rapid
capacity
and
voltage
decay,
sluggish
reaction
kinetics,
large
hysteresis.
Herein,
we
propose
metal–ligand
spin-lock
strategy
to
inhibit
anion
dimerization,
which
involves
introducing
an
Fe–Ni
couple
having
antiferromagnetic
superexchange
interaction
into
LCM
lock
spin
orientations
unpaired
electrons
anions
same
direction.
As
proof
concept,
applied
this
intralayer
disordered
Li2TiS3
(ID-LTS)
S–S
dimerization.
Electrochemical
characterization
using
galvanostatic
charge/discharge
intermittent
titration
technique
demonstrated
considerably
enhanced
anionic
redox
activity,
reduced
hysteresis,
improved
kinetics
Fe–Ni-couple-incorporated
ID-LTS.
Fe
L2,3-edge
X-ray
absorption
spectroscopy
magnetic
susceptibility
measurements
revealed
that
effect
consequent
suppression
involve
ligand-to-metal
charge
transfer
between
S
Fe.
Further
electrochemical
tests
on
layered
oxide
(Li0.7Li0.1Fe0.2Ni0.1Mn0.6O2)
indicated
importance
π
backbond
enhancing
from
These
findings
demonstrate
potential
our
development
high-performance
LCMs.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(18), С. 12819 - 12827
Опубликована: Апрель 26, 2024
Chirality
evolution
from
molecule
levels
to
the
nanoscale
in
an
achiral
system
is
a
fundamental
issue
that
remains
undiscovered.
Here,
we
report
assembly
of
polyoxometalate
(POM)
clusters
into
chiral
subnanostructures
systems
by
programmable
single-molecule
interactions.
Driven
competing
binding
Ca2+
and
surface
ligands,
POM
assemblies
would
twist
helical
nanobelts,
nanorings,
nanotubes
with
tunable
helicity.
Chiral
molecules
can
be
used
differentiate
formation
energies
isomers
immobilize
homochiral
isomer,
where
strong
circular
dichroism
(CD)
signals
are
obtained
both
solutions
films.
nanobelts
as
circularly
polarized
light
(CPL)
photodetectors
due
their
distinct
chiroptic
responsivity
for
right
left
CPL.
By
fine-tuning
interactions
at
levels,
morphology
CD
spectra
precisely
controlled,
providing
atomic
precision
model
investigation
structure–chirality
relationship
chirality
manipulation
nanoscale.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(22), С. 28517 - 28525
Опубликована: Май 20, 2024
Effective
catalytic
performance
of
the
transition
metal
oxide
is
attributed
to
high
specific
surface
areas,
abundant
oxygen
atoms,
and
balanced
valence
ratios.
Although
chirality
has
attracted
attention,
most
studies
have
focused
on
optical
application.
A
few
chiral
oxides
were
used
as
electrocatalysts
photocatalysts.
The
influence
catalysts
thermal
catalysis
process
been
less
explored.
In
this
study,
Mn-loaded
(M/l-CuO
M/d-CuO)
achiral
CuO
(M/a-CuO)
synthesized
compared
in
oxidization
toluene.
Spectrally
analyzed
Mn
was
well-dispersed
both
CuO.
l-CuO
d-CuO
showed
nanoflower-like
chirality.
angles
between
each
(001)
plane
source
toluene
turnover
frequency
(TOF)
samples
order
Mn/d-CuO
(5.6
×
10–5
s–1)
>
Mn/l-CuO
(4.4
Mn/a-CuO
(3.2
at
240
°C,
consistent
with
replenishment
rate.
as-prepared
had
similar
ratios
lattice
oxygen/surface
adsorbed
oxygen,
Mn3+/Mn4+,
Cu+/Cu2+.
higher
TOF
chirality,
which
increased
speed
from
gaseous
phase
solid
surface.
Our
study
indicates
gas–solid
a
structure–activity
viewpoint.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 23, 2024
Subnanometer
materials
(SNMs)
refer
to
nanomaterials
with
a
feature
size
close
1
nm,
similar
the
diameter
of
single
polymer,
DNA
strand,
and
cluster/unit
cell.
The
growth
assembly
subnanometer
building
blocks
can
be
controlled
by
interactions
at
atomic
levels,
representing
limit
for
precise
manipulation
materials.
size,
geometry,
flexibility
1D
SNMs
inorganic
backbones
are
polymer
chains,
bringing
excellent
gelability,
adhesiveness,
processability
different
from
nanocrystals.
ultrahigh
surface
atom
ratio
results
in
significantly
increased
energy,
leading
significant
rearrangement
atoms.
Unconventional
phases,
immiscible
metal
alloys,
high
entropy
few
layers
stabilized,
spontaneous
twisting
may
induce
intrinsic
structural
chirality.
Electron
delocalization
also
emerge
subnanoscale,
giving
rise
enhanced
catalytic
activity.
In
this
perspective,
we
summarized
recent
progress
on
SNMs,
including
their
synthesis,
polymer-like
properties,
metastable
chirality,
toward
energy
conversion.
As
critical
region
nanoscience,
development
functional
fuse
boundary
polymers
conduce
manufacturing
levels.
Advanced Materials,
Год журнала:
2024,
Номер
36(35)
Опубликована: Июль 4, 2024
To
facilitate
the
transition
from
a
carbon-energy-dependent
society
to
sustainable
society,
conventional
engineering
strategies,
which
encounter
limitations
associated
with
intrinsic
material
properties,
should
undergo
paradigm
shift.
From
theoretical
viewpoint,
spin-dependent
feature
of
oxygen
evolution
reaction
(OER)
reveals
potential
spin-polarization
strategy
in
enhancing
performance
electrochemical
(EC)
reactions.
The
chirality-induced
spin
selectivity
(CISS)
phenomenon
attracts
unprecedented
attention
owing
its
utility
achieving
novel
breakthroughs.
This
paper
starts
experimental
results
aimed
at
efficiency
OER
focusing
on
EC
system
based
CISS
phenomenon.
applicability
is
verified
through
various
analytical
methodologies
clarify
groundwork
and
mechanisms
underlying
pathway.
discussion
then
extended
effective
spin-control
strategies
photoelectrochemical
effect.
Exploring
influence
spin-state
control
kinetic
thermodynamic
aspects,
this
perspective
also
discusses
effect
polarization
induced
by
OER.
Lastly,
future
directions
for
redox
systems
are
discussed,
including
expansion
chemical
reactions
development
materials
capabilities.
Chemical Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Intrinsically
chiral
oxides
show
enhanced
activity
towards
the
oxygen
evolution
reaction
in
full
cell
electrolysers.
Enantiopure
active
sites
were
detected
operando
by
circular
dichroism-spectro-electrochemical
data.
