Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(48)
Published: Sept. 27, 2022
Visible
light
can
be
used
to
shift
dynamic
covalent
imine
assemblies
out
of
equilibrium.
We
studied
a
fluorinated
azobenzene
building
block
that
reliably
undergoes
geometric
isomerism
upon
irradiation.
The
was
in
combination
with
two
different
amines,
ethylenediamine
and
R,R-1,2-diaminocyclohexane,
create
library
macrocycles.
Whereas
the
simple
amine
access
polymeric
state
defined
bowl-shaped
macrocycle,
chiral
gives
rich
network
macrocycles
undergo
both
isomerisation
as
well
interconversion
between
macrocyclic
species,
thereby
allowing
for
control
over
number
monomers
involved
cyclo-oligomerization;
Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
52(23), P. 8245 - 8294
Published: Jan. 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.
Deleted Journal,
Journal Year:
2024,
Volume and Issue:
2(1)
Published: Jan. 12, 2024
Abstract
Stimuli‐responsive
fluorescent
hydrogels
are
three‐dimensional
networked
polymeric
materials
with
tunable
luminescence
and
dynamic
properties,
which
play
an
important
role
as
a
water‐rich
soft
material
in
the
fields
of
information
encryption,
bionic
actuation,
bioimaging,
environmental
monitoring,
luminescent
materials.
Compared
conventional
hydrogels,
their
unique
properties
allow
visualization
microscopic
dynamics
within
polymer
network.
By
rational
inclusion
motifs,
such
photoswitches,
AIEgens,
lanthanide
complexes,
host–guest
these
endowed
tunability
emission,
shape,
phase
time
space
response
to
effectors.
In
this
review,
we
summarize
fabrication
strategies
that
mainly
used
by
recently
reported
stimuli‐responsive
applications
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(29), P. 19609 - 19620
Published: July 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.
Small,
Journal Year:
2022,
Volume and Issue:
19(1)
Published: Oct. 26, 2022
Abstract
Developing
safe
and
precise
image‐guided
photodynamic
therapy
is
a
challenge.
In
this
study,
the
hypoxic
properties
of
solid
tumors
are
exploited
to
construct
hypoxia‐responsive
photosensitizer,
TPA‐Azo
.
Introducing
azo
group
into
photosensitizer
TPA‐BN
with
aggregation‐induced
emission
quenches
its
fluorescence.
When
nonfluorescent
enters
tumors,
it
reduced
by
overexpressed
azoreductase
generate
fluorescent
an
amino
that
exhibits
fluorescence‐activatable
dual‐organelle
(lipid
droplets
lysosomes)
targeting.
This
design
strategy
provides
basis
for
development
photosensitizers.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(35)
Published: July 7, 2022
Abstract
A
relatively
new
addition
to
the
application
portfolio
of
lead
halide
perovskites
is
photosensitize
molecular
triplets
for
a
variety
photochemical
applications.
Here
we
report
visible‐light‐driven
isomerization
and
cycloaddition
organic
molecules
sensitized
by
spectrally‐tunable
perovskite
nanocrystals.
We
first
demonstrate
with
stilbene
as
substrate
molecule
that
photoisomerization
can
proceed
efficiently
rapidly
either
directly
grafting
carboxylated
onto
nanocrystal
surfaces
or
using
triplet–acceptor
ligands
energy
relay.
The
relay
approach
more
generally
applicable
it
does
not
require
anchoring‐group
functionalization
molecules,
allowing
us
facilely
extend
series
substituted
ring‐closing
diarylethene,
well
intermolecular
[2+2]
acenaphthylene.
This
study
opens
an
avenue
energy‐transfer
photocatalysis
Journal of Materials Chemistry C,
Journal Year:
2023,
Volume and Issue:
11(44), P. 15393 - 15411
Published: Jan. 1, 2023
This
review
summarizes
recent
advances
in
small-molecule
fluorescent
photoswitches
based
on
classic
photochromic
molecules
diverse
states,
and
provides
some
existing
problems
challenges
to
promote
follow-up
development
this
field.
Polymer Journal,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 16, 2024
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
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(18), P. 6763 - 6769
Published: Jan. 1, 2024
This
work
outlines
a
simple
synthetic
strategy
providing
formylated
stiff-stilbenes.
The
photoisomerization
of
stiff-stilbenes
could
be
fully
controlled
using
visible
light
and
is
accompanied
by
high
photostationary
state
distribution.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(30), P. 11684 - 11698
Published: Jan. 1, 2024
Photoswitching
via
indirect
excitation
allows
harnessing
low-energy
photons
to
control
molecular
configuration.
Herein,
the
state
of
art
predominant
photoswitching
methods
is
presented.
