Binaphthyl‐Aniline‐Based Chiral Magnetic Polymer
Journal of Polymer Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 18, 2025
ABSTRACT
Magnetoactive
polymers
based
on
1,1′‐binaphthyl‐2,2′‐diamine
with
axial
chirality
were
synthesized
through
cross‐coupling
polycondensation
of
the
Buchwald–Hartwig
reaction
and
subsequent
oxidation
m
‐chloroperoxybenzoic
acid.
The
characterized
optical
spectroscopy,
electron
spin
resonance,
superconducting
quantum
interference
device,
synchrotron
X‐ray
diffraction.
Circular
dichroism
measurements
revealed
that
exhibited
activity.
Magnetic
further
showed
are
organic
chiral
materials
weak
antiferromagnetism
owing
to
presence
solid
oxygen
low‐dimensional
ordering.
Язык: Английский
Chiral Amplification and Regulation: Design and Applications of Circularly Polarized Luminescence‐Active Materials Derived From Macrocyclic Compounds
Aggregate,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 9, 2025
ABSTRACT
Chirality
is
a
fundamental
property
in
molecules
and
biological
systems,
characterized
by
asymmetric
configurational
features.
Circularly
polarized
luminescence
(CPL)
materials
have
gained
significant
attention
due
to
their
unique
optical
activities,
with
applications
3D
displays,
chiral
sensors,
catalysis,
more.
Chiral
transfer
amplification
typically
involve
the
generation
of
chirality
excited
state,
facilitated
interactions
like
energy
transfer,
electron
or
induction.
Supramolecular
self‐assembly
strategies,
particularly
macrocyclic
compounds,
enable
linking
achiral
luminescent
units
through
intermolecular
interactions.
Macrocyclic
hosts—cyclodextrins,
calix[
n
]arenes,
pillar[
cyclophanes,
cucurbit[
]urils—are
especially
promising
stable
structures
adjustable
cavities
for
guest
encapsulation.
These
compounds
induce
photophysical
properties
host–guest
complexation,
making
them
ideal
constructing
amplification,
CPL‐active
materials.
This
review
summarizes
advancements
multicolor
CPL
materials,
sensing,
induction,
separation,
highlighting
potential
supramolecular
material
design.
The
challenges
future
directions
this
field
are
also
discussed,
aiming
guide
further
research
application
systems.
Язык: Английский
Dynamic Dance of Chirality and Morphology: Interplay of Solvent-Sensitive Self-Assembly in Topological Evolution and Chirality Amplification
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(45), С. 62988 - 62998
Опубликована: Окт. 31, 2024
The
building
block
Pyra-Chol
has
been
designed
and
synthesized,
which
exhibits
different
achiral
morphologies
in
good
solvents,
forming
nanospheres
THF
nanoflowers
1,4-dioxane.
In
the
presence
of
water
as
a
poor
cosolvent,
demonstrates
an
agnostic
behavior,
generating
left-handed
superhelices
water:THF
(80:20)
solvent
system.
However,
when
is
switched
to
1,4-dioxane,
change
chirality
observed
water:1,4-dioxane
(30:70)
system,
resulting
formation
fused
nanospheres.
Interestingly,
cosolvent
changed
from
MCH
THF,
chiral
pattern
remains
unchanged,
but
morphology
changes
completely.
Supported
by
collective
spectroscopic
microscopic
analysis,
present
study
efficaciously
remarkable
control
hydrophobic
over
sense
also
highlights
fascinating
influence
well
supporting
distinct
molecular
packing.
Язык: Английский