Macromolecular Materials and Engineering,
Год журнала:
2024,
Номер
309(5)
Опубликована: Март 15, 2024
Abstract
Amphiphilic
cyclic
dipeptides
are
efficient
supramolecular
hydrogelators.
They
can
be
combined
with
molecular
photoswitches
to
produce
light‐responsive
soft
materials,
which
applied
in
controlled
drug
delivery.
Here
it
is
reported
that
an
arginine‐containing
dipeptide
decorated
ortho‐fluorinated
azobenzene
forms
hydrogels
under
physiological
conditions
reversibly
liquefied
upon
exposure
visible
light
frequencies
(green
and
violet,
respectively).
The
addition
of
sodium
alginate
results
composite
increased
gelating
capacity
supported
Coulombic
interactions,
also
dissipate
irradiation.
Chemical Society Reviews,
Год журнала:
2023,
Номер
52(23), С. 8245 - 8294
Опубликована: Янв. 1, 2023
Donor-acceptor
Stenhouse
adduct
(DASA)
photoswitches
have
gained
a
lot
of
attention
since
their
discovery
in
2014.
Their
negative
photochromism,
visible
light
absorbance,
synthetic
tunability,
and
the
large
property
changes
between
photoisomers
make
them
attractive
candidates
over
other
commonly
used
for
use
materials
with
responsive
or
adaptive
properties.
The
development
such
translation
into
advanced
technologies
continues
to
widely
impact
forefront
research,
DASAs
thus
attracted
considerable
interest
field
visible-light
molecular
switches
dynamic
materials.
Despite
this
interest,
there
been
challenges
understanding
complex
behavior
context
both
small
molecule
studies
Moreover,
incorporation
polymers
can
be
challenging
due
incompatibility
conditions
most
common
polymerization
techniques.
In
review,
therefore,
we
examine
critically
discuss
recent
developments
DASA-containing
polymers,
aiming
at
providing
better
interplay
properties
constituents
(matrix
photoswitch).
first
part
summarizes
current
DASA
design
switching
second
section
discusses
strategies
materials,
methods
studying
We
also
emerging
applications
polymeric
ranging
from
light-responsive
drug
delivery
systems,
photothermal
actuators,
sensors
photoswitchable
surfaces.
Last,
summarize
venture
on
steps
required
explore
novel
systems
expand
functional
application
opportunities
polymers.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(29), С. 19609 - 19620
Опубликована: Июль 11, 2024
Azobenzenes
(Ph-N═N-Ph)
are
known
as
the
most
widely
studied
molecular
photoswitches,
and
recent
rise
of
azoheteroarenes
(Het-N═N-Ph
or
Het-N═N-Het)
offers
great
opportunities
to
advance
this
already
mature
field.
A
common
limitation
is
that
azo-switches
generally
require
harmful
UV
light
for
activation,
which
hinders
their
application
across
various
fields.
Despite
efforts
in
developing
visible-light
azobenzenes
over
past
few
decades,
potential
heteroaryl
azoswitches
remains
largely
unexplored.
This
Perspective
summarizes
state-of-the-art
advancements
azoswitches,
covering
design
strategies,
structure-property
relationship,
applications.
We
highlight
distinctive
advantages
research
development
switches.
Furthermore,
we
discuss
challenges
emerging
field
propose
solutions
address
crucial
issues
such
spectral
red-shift
thermal
half-life.
Through
paper,
aim
provide
inspiration
further
exploration
field,
anticipation
growing
prosperity
bright
future
azoheteroarene
photoswitches.
eScience,
Год журнала:
2024,
Номер
4(3), С. 100231 - 100231
Опубликована: Янв. 21, 2024
Stimuli-responsive
coordination
polymers
(CPs)
are
among
one
of
the
most
prolific
research
areas
in
developing
next-generation
functional
materials.
Their
capability
being
accurately
excited
by
particular
external
changes
with
pre-determined
and
observable/characterizable
behaviours
correspond,
so
called
"stimuli"
"responsive".
Abundant
types
CP
compounds,
especially
metal-organic
frameworks
(MOFs),
rocketing
interest
owing
to
their
compositional
diversity,
structural
tunability,
essence
highly
engineerable
functionality.
This
present
review
is
aimed
sketch
several
common
stimulation
corresponding
responses
for
CPs,
accompanied
broad
logic
mechanisms
underneath.
And
further
from
aspect
material
revolution,
some
representative
progresses
together
latest
advances
CP-based
materials
various
fields
covered
attempt
display
a
broader
picture
towards
possible
prospects
this
topic.
Abstract
Photoinduced
transitions
between
the
solid,
glass,
and
liquid
states
based
on
molecular
photoswitches
promise
a
wide
variety
of
applications.
Photoswitchable
adhesives
are
representative
examples
expected
to
contribute
material
recycling
for
sustainable
future
in
era
composite
materials
due
strong
bonding
on-demand
photo-induced
debonding
with
minimal
damage
adherends.
Only
few
known
undergo
these
transitions,
but
recent
progress,
mainly
azobenzene,
has
been
remarkable.
Here,
we
review
photoinduced
small
molecules
polymers
over
approximately
decade
systematically
discuss
designs,
mechanisms,
applications,
merits
demerits,
challenges
each
photoswitch
whole
field.
We
hope
this
provides
useful
information,
inspiration,
ideas
development
field
expansion
its
Journal of Materials Chemistry C,
Год журнала:
2022,
Номер
10(37), С. 13700 - 13716
Опубликована: Янв. 1, 2022
This
perspective
focuses
on
the
key
challenges
blocking
development
of
photoresponsive
materials,
and
shows
a
guidance
value
for
systematically
designing
solid-state
materials.
Using
smart
photochromic
and
luminescent
tissues
in
camouflage/cloaking
of
natural
creatures
has
inspired
efforts
to
develop
synthetic
stimuli-responsive
materials
for
data
encryption
anticounterfeiting.
Although
many
optical
data-encryption
have
been
reported,
they
generally
require
only
one
or
a
simple
combination
few
stimuli
decryptions
rarely
offer
output
corruptibility
that
prevents
trial-and-error
attacks.
Here,
we
report
series
multiresponsive
donor-acceptor
Stenhouse
adducts
(DASAs)
with
unprecedented
switching
behavior
controlled
reversibility
via
diamine
conformational
locking
substrate
free-volume
engineering
their
capability
sequential
logic
(SLE).
Being
analogous
the
digital
circuits,
DASA
gel-based
system
depends
not
on
present
input
stimulus
but
also
sequence
past
inputs.
Incorrect
inputs/sequences
generate
substantial
fake
information
lead
attackers
point
no
return.
This
work
offers
new
design
concepts
advanced
operate
SLE,
paving
path
toward
encryptions
beyond
circuit
approaches.
