Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(18)
Published: Jan. 18, 2024
Artificial
molecular
motors
have
the
potential
to
generate
mechanical
work
on
their
environment
by
producing
autonomous
unidirectional
motions
when
supplied
with
a
source
of
energy.
However,
harnessing
this
subsequently
activate
various
endoenergetic
processes
that
can
be
useful
in
materials
science
remains
elusive.
Here,
it
is
shown
integrating
light-driven
rotary
motor
through
hydrogen
bonds
β-amyloid-like
structure
forming
supramolecular
hydrogels,
generated
during
constant
rotation
machine
under
UV
irradiation
sufficient
disrupt
β-amyloid
fibers
and
trigger
gel-to-sol
transition
at
macroscopic
scale.
This
melting
gel
occurs
25
°C
below
temperature
needed
melt
solely
using
thermal
activation.
In
dark,
reversible
sol-gel
observed
as
system
fully
recovers
its
original
microstructure,
thus
illustrating
possible
access
new
kinds
motorized
controlled
advanced
out-of-equilibrium
thermodynamics.
Chemical Science,
Journal Year:
2022,
Volume and Issue:
13(45), P. 13541 - 13551
Published: Jan. 1, 2022
We
present
a
data-driven
discovery
pipeline
for
molecular
photoswitches
through
multitask
learning
with
Gaussian
processes.
Through
subsequent
screening,
we
identify
several
motifs
separated
and
red-shifted
electronic
absorption
bands.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
62(5)
Published: Nov. 24, 2022
The
ability
to
exploit
energy
autonomously
is
one
of
the
hallmarks
life.
Mastering
such
processes
in
artificial
nanosystems
can
open
technological
opportunities.
In
last
decades,
light-
and
chemically
driven
autonomous
systems
have
been
developed
relation
conformational
motion
self-assembly,
mostly
molecular
motors.
contrast,
despite
electrical
being
an
attractive
source
power
nanosystems,
its
harnessing
has
received
little
attention.
Herein
we
consider
operation
mode
that
allows
exploitation
by
a
self-assembling
system.
Threading
dethreading
motions
pseudorotaxane
take
place
solution,
powered
current
flowing
between
electrodes
scanning
electrochemical
microscope.
underlying
ratchet
mechanism
drives
self-assembly
steps
away
from
equilibrium
with
higher
efficiency
compared
other
systems.
strategy
general
might
be
extended
redox-driven
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: May 29, 2023
Chemical
fuel-driven
supramolecular
systems
have
been
developed
showing
out-of-equilibrium
functions
such
as
transient
gelation
and
oscillations.
However,
these
suffer
from
undesired
waste
accumulation
they
function
only
in
open
systems.
Herein,
we
report
non-equilibrium
polymerizations
a
closed
system,
which
is
built
by
viologens
pyranine
the
presence
of
hydrazine
hydrate.
On
shaking,
are
quickly
oxidated
air
followed
self-assembly
into
micrometer-sized
nanotubes.
The
self-assembled
nanotubes
disassemble
spontaneously
over
time
reduced
agent,
with
nitrogen
product.
Our
mechanosensitive
dissipative
system
can
be
extended
to
fabricate
chiral
helix
introducing
chiral-charged
small
molecules.
Moreover,
show
that
shaking
induces
fluorescence
enhancement
or
quenching
depending
on
substitution
viologens.
Ultrasound
introduced
specific
way
generate
template-free
reproducible
patterns.
Additionally,
shake-driven
polymerization
amphiphilic
naphthalenetetracarboxylic
diimide
serves
further
evidence
versatility
our
system.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(33)
Published: June 27, 2023
Abstract
An
energy
ratchet
mechanism
is
exploited
for
the
synthesis
of
a
molecule.
In
presence
adenosine
triphosphate
(ATP),
hydrazone‐bond
formation
between
an
aldehyde
and
hydrazide
accelerated
composition
at
thermodynamic
equilibrium
shifted
towards
hydrazone.
Enzymatic
hydrolysis
ATP
installs
kinetically
stable
state,
which
hydrazone
present
higher
concentration
compared
to
in
degradation
products
ATP.
It
shown
that
kinetic
state
has
enhanced
catalytic
activity
RNA‐model
compound.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(18)
Published: Jan. 18, 2024
Artificial
molecular
motors
have
the
potential
to
generate
mechanical
work
on
their
environment
by
producing
autonomous
unidirectional
motions
when
supplied
with
a
source
of
energy.
However,
harnessing
this
subsequently
activate
various
endoenergetic
processes
that
can
be
useful
in
materials
science
remains
elusive.
Here,
it
is
shown
integrating
light-driven
rotary
motor
through
hydrogen
bonds
β-amyloid-like
structure
forming
supramolecular
hydrogels,
generated
during
constant
rotation
machine
under
UV
irradiation
sufficient
disrupt
β-amyloid
fibers
and
trigger
gel-to-sol
transition
at
macroscopic
scale.
This
melting
gel
occurs
25
°C
below
temperature
needed
melt
solely
using
thermal
activation.
In
dark,
reversible
sol-gel
observed
as
system
fully
recovers
its
original
microstructure,
thus
illustrating
possible
access
new
kinds
motorized
controlled
advanced
out-of-equilibrium
thermodynamics.
