Coupling Rotary Motion to Helicene Inversion within a Molecular Motor
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 11, 2024
Towards
complex
coupled
molecular
motions,
the
remote
handedness
inversion
of
a
helicene
moiety
was
achieved
by
rotary
motor.
The
use
specifically
engineered
dynamic
stator
in
novel
overcrowded-alkene
second-generation
motor
based
on
fluorinated
dibenzofluorene
fragment
allows
for
an
unprecedented
control
over
helicity
inversion.
This
is
mechanical
coupling
rotation
rotor
to
half
via
chirality
transmission
process.
Thus,
unidirectional
motion
generated
upon
irradiation
used
invert
stereochemistry
helicene,
leading
6-step
cycle
with
eight
intermediates.
In
this
cycle,
both
alternation
between
P
and
M
configurations
thermal
interconversion
(paddling
motion)
can
be
achieved.
In-depth
computational
spectroscopic
studies
were
performed
support
associated
mechanism.
offers
prospects
development
responsive
systems.
Язык: Английский
Coupling Rotary Motion to Helicene Inversion within a Molecular Motor
Angewandte Chemie,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 11, 2024
Abstract
Towards
complex
coupled
molecular
motions,
the
remote
handedness
inversion
of
a
helicene
moiety
was
achieved
by
rotary
motor.
The
use
specifically
engineered
dynamic
stator
in
novel
overcrowded‐alkene
second‐generation
motor
based
on
fluorinated
dibenzofluorene
fragment
allows
for
an
unprecedented
control
over
helicity
inversion.
This
is
mechanical
coupling
rotation
rotor
to
half
via
chirality
transmission
process.
Thus,
unidirectional
motion
generated
upon
irradiation
used
invert
stereochemistry
helicene,
leading
6‐step
cycle
with
eight
intermediates.
In
this
cycle,
both
alternation
between
P
and
M
configurations
thermal
interconversion
(paddling
motion)
can
be
achieved.
In‐depth
computational
spectroscopic
studies
were
performed
support
associated
mechanism.
offers
prospects
development
responsive
systems.
Язык: Английский
Hemiindigoids As Prominent Photoswitch Scaffolds
ChemPhotoChem,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 22, 2024
Abstract
Hemiindigo
photoswitches,
a
class
of
chromophores
derived
from
the
well‐known
indigo
dye,
have
attracted
considerable
interest
over
past
two
decades.
These
compounds
are
unique
in
their
ability
to
absorb
light
visible
region
spectrum
both
isomeric
states,
making
them
ideal
for
applications
where
high‐energy
UV
is
not
tolerated.
A
particularly
attractive
feature
hemiindigoids
that,
despite
rigid
structures,
they
undergo
significant
and
controllable
changes
during
photoisomerisation
process.
Moreover,
exhibit
combination
high
thermal
bistability,
pronounced
photochromism,
fast,
efficient
photoisomerisation,
positioning
hemiindigoid
photoswitches
as
versatile
chromophores.
This
review
summarises
current
developments
advances
including
synthesis,
photoswitching
performance,
applications,
with
strong
focus
on
practical
use
reversible
triggers
fields
ranging
photopharmacology
advanced
materials.
Язык: Английский