Angewandte Chemie,
Год журнала:
2023,
Номер
135(47)
Опубликована: Июль 31, 2023
Abstract
Pillar[
n
]arenes
are
symmetrical
macrocyclic
compounds
composed
of
benzene
panels
with
para‐methylene
linkages.
Each
panel
usually
exhibits
planar
chirality
and
prefers
chirality‐aligned
states.
Because
this
feature,
pillar[
attractive
scaffolds
for
chiroptical
materials
that
easy
to
prepare
optically
resolve
show
intense
circular
dichroism
(CD)
signals.
In
addition,
rotation
the
endows
a
dynamic
nature.
The
in
tubular
oligomers
supramolecular
assemblies
sometimes
time‐
procedure‐dependent
alignment
phenomena.
Furthermore,
CD
signals
some
respond
addition
chiral
guests
when
their
is
coupled
host–guest
properties.
By
using
diastereomeric
additional
structures,
response
can
also
be
caused
by
achiral
changes
environment,
providing
molecular
sensors.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(37)
Опубликована: Июль 20, 2023
Chiral
induction
by
natural
biomolecules
can
reveal
the
indispensable
role
of
chiral
structures
in
life
and
be
used
to
develop
chirality-sensing
biomolecular
recognition.
Here,
we
present
synthesis
characterization
an
achiral
supramolecular
organic
framework
(SOF-1)
constructed
from
cucurbit[8]uril
(CB[8])
hexaphenylbenzene
(HPB)
derivative
(1)
water.
Due
propeller-like
rotational
conformation
HPB
units
specific
recognition
properties
CB[8],
SOF-1
demonstrates
adaptive
water
when
interacting
with
N-terminal
Trp-/Phe-containing
dipeptides
including
L-TrpX
L-PheX
(X
is
amino
acid
residue),
respectively,
exhibiting
contrasting
circular
dichroism
(CD)
circularly
polarized
luminescence
(CPL)
spectra.
Consequently,
has
been
developed
as
a
host
chiroptical
sensor
capable
recognizing
distinguishing
sequence-opposite
dipeptide
pairs
L-TrpX/L-XTrp
L-PheX/L-XPhe
based
on
sequence-selective
CD
responses.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(47)
Опубликована: Июль 31, 2023
Abstract
Pillar[
n
]arenes
are
symmetrical
macrocyclic
compounds
composed
of
benzene
panels
with
para‐methylene
linkages.
Each
panel
usually
exhibits
planar
chirality
and
prefers
chirality‐aligned
states.
Because
this
feature,
pillar[
attractive
scaffolds
for
chiroptical
materials
that
easy
to
prepare
optically
resolve
show
intense
circular
dichroism
(CD)
signals.
In
addition,
rotation
the
endows
a
dynamic
nature.
The
in
tubular
oligomers
supramolecular
assemblies
sometimes
time‐
procedure‐dependent
alignment
phenomena.
Furthermore,
CD
signals
some
respond
addition
chiral
guests
when
their
is
coupled
host–guest
properties.
By
using
diastereomeric
additional
structures,
response
can
also
be
caused
by
achiral
changes
environment,
providing
molecular
sensors.
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
147(9), С. 7325 - 7335
Опубликована: Фев. 18, 2025
Helicates
are
a
defining
element
of
DNAs
and
proteins,
with
functions
that
critical
to
variety
biological
processes.
Cyclodextrins
promising
candidates
for
forging
multiple-stranded
helicates
well-defined
helicity,
but
lack
available
tools
has
precluded
the
construction
artificial
helical
nanochannels
controllable
geometry
helicity
from
these
widely
chiral
building
blocks.
Herein,
we
disclose
family
Ag6L2
can
be
readily
assembled
α-cyclodextrin-derived
ligands
through
coordination
between
pyridinyl
groups
Ag+
cations.
We
discovered
exhibit
either
an
M
or
P
when
cations
adopt
tetrahedral
while
losing
most
their
linearly
coordinated.
Both
precisely
controlled
by
simply
changing
number
methyl
at
ortho
positions
ligands.
The
tetracoordinated
interconnect
into
infinite
two-dimensional
coordinative
network
characterized
hexagonal
tessellation.
Theoretical
calculations,
which
reveal
lower
energies
conformations
observed
in
crystals
compared
those
inverted
counterparts,
support
experimental
results.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(30), С. 21078 - 21088
Опубликована: Июль 19, 2024
Short-stranded
double-helical
monometallofoldamers
capable
of
M/P-switching
were
constructed
by
the
complexation
two
strands,
each
with
L-shaped
units
linked
a
2,2′-bipyridine,
Zn(II)
cation.
The
helix
terminals
"double-helical
form"
folded
π–π
interactions
can
unfold
in
solution
to
equilibrate
"open
forms"
that
are
favored
at
higher
temperatures.
Interestingly,
helical
chirality
chiral
side
chains
induced
single-handed
sense
and
controlled
depending
on
achiral
solvent
stimuli.
For
instance,
(M)-helicity
was
nonpolarized
solvents
(toluene,
hexane,
Et2O),
whereas
(P)-helicity
Lewis
basic
(acetone,
DMSO).
Circular
dichroism
(CD)
rotating-frame
overhauser
enhancement
spectroscopy
(ROESY)
measurements
revealed
conformational
change
due
interaction
double
helices
helicity
bias.
These
novel
possessed
stable
structure
exhibited
switchable
chiroptical
properties
(gabs
∼
10–3–10–2).
In
addition,
strand
transfer
amplification
abilities
through
formation
heteroleptic
when
mixed
an
strand.
Materials Chemistry Frontiers,
Год журнала:
2023,
Номер
8(5), С. 1212 - 1229
Опубликована: Дек. 9, 2023
In
this
review,
we
discuss
progress
in
the
field
of
pillar[
n
]arene-based
optical
response
systems,
focusing
on
color,
fluorescence,
circular
dichroism,
and
circularly
polarized
luminescence
signal
changes
via
host–guest
interactions.
Abstract
Intelligent
materials
with
responsive
behaviors
toward
external
stimuli,
such
as
light,
temperature,
pH,
redox,
and
solvent
have
been
increasingly
fascinating.
Reversible
noncovalent
interactions
provide
an
efficient
way
to
construct
stimuli‐responsive
materials.
Macrocyclic
compounds,
cyclodextrins,
cucurbit[
n
]urils,
calix[
]arenes,
crown
ethers,
related
macrocycles,
are
useful
skeletons
for
constructing
through
host–guest
interactions.
Pillar[
]arenes
pillar‐shaped
macrocyclic
hosts
developed
by
our
groups
in
2008,
which
the
repeated
1,4‐dialkoxybenzene
units
connected
methylene
bridges
at
para
position.
The
versatile
functionality,
easy
modification,
excellent
size‐dependent
complexation,
adjustable
electron
density
of
cavity
endow
pillar[
properties
compared
other
cyclic
host
molecules.
Moreover,
unique
planar
chirality
inversion
generated
unit
rotation
make
ideal
platforms
investigating
inversion,
induction,
transformation.
In
this
review,
we
describe
topological,
optical,
chiroptical,
supramolecular
assemblies,
solid‐state
based
on
complexation
structural
regulation
]arenes.
Chemical Science,
Год журнала:
2024,
Номер
15(10), С. 3758 - 3766
Опубликована: Янв. 1, 2024
Chirality
transfer
for
natural
chiral
biomolecules
can
reveal
the
indispensable
role
of
structures
in
life
and
be
used
to
develop
chirality-sensing
biomolecular
recognition.
Here,
we
report
synthesis
characterization
a
series
achiral
supramolecular
organic
frameworks
(SOF-1,
SOF-2,
SOF-3),
constructed
from
cucurbit[8]uril
(CB[8])
tetraphenylethene
(TPE)
derivatives
(1,
2,
3),
respectively,
as
platforms
explore
their
chirality
mechanism
peptides
water.
Given
right-handed
(P)
left-handed
(M)
rotational
conformation
TPE
units
selective
binding
CB[8]
aromatic
amino
acids,
these
SOFs
selectively
triggered
water
by
containing
N-terminal
tryptophan
(W)
phenylalanine
(F)
residues
into
P-
or
M-rotational
conformation,
exhibiting
significantly
different
circular
dichroism
(CD)
spectra.
Although
various
have
same
l-type
configuration,
they
induce
positive
CD
signals
SOF-1
negative
SOF-2
SOF-3,
respectively.
Based
on
structural
analysis
linkage
between
SOFs,
"gear-driven"-type
has
been
proposed
visually
illustrate
multiple-step
process
recognition
site
CB[8]'s
cavity
units.
Furthermore,
utilizing
characteristic
generated
through
transfer,
serve
chiroptical
sensor
arrays
effectively
recognize
distinguish
based
distinctive
Micromachines,
Год журнала:
2024,
Номер
15(2), С. 282 - 282
Опубликована: Фев. 17, 2024
Nanotechnology
has
advanced
the
techniques
for
elucidating
phenomena
at
atomic,
molecular,
and
nano-level.
As
a
post
nanotechnology
concept,
nanoarchitectonics
emerged
to
create
functional
materials
from
unit
structures.
Consider
material
function
when
enables
design
of
whose
internal
structure
is
controlled
nanometer
level.
Material
determined
by
two
elements.
These
are
that
forms
core
environment
(matrix)
surrounds
it.
This
review
paper
discusses
confined
space,
which
field
controlling
molecular
machines.
The
first
few
sections
introduce
some
various
dynamic
functions
in
spaces,
considering
biospace.
In
latter
sections,
examples
research
on
behavior
machines,
such
as
motors,
spaces
discussed.
particular,
surface
space
nanospace
taken
up
typical
space.
What
these
show
not
only
central
unit,
but
also
surrounding
spatial
configuration
necessary
higher
expression.
Nanoarchitectonics
will
play
important
roles
architecture
total
system.
