Chemistry - A European Journal,
Journal Year:
2023,
Volume and Issue:
30(11)
Published: Dec. 13, 2023
Abstract
Emerging
applications
of
photochromic
compounds
demand
new
molecular
designs
that
can
be
inspired
by
some
long‐known
yet
currently
forgotten
classes
photoswitches.
In
the
present
review,
we
remind
community
about
Peri
‐AryloxyQuinones
(PAQs)
and
their
unique
photoswitching
behavior
originally
discovered
more
than
50
years
ago.
At
heart
this
phenomenon
is
light‐induced
migration
an
aromatic
moiety
(arylotropy)
in
peri
‐aryloxy‐substituted
quinones
resulting
ana
‐quinones.
PAQs
feature
absorbance
both
isomers
visible
spectral
region,
photochromism
amorphous
crystalline
state,
thermal
stability
photogenerated
‐isomer.
Particularly
noticeable
high
sensitivity
‐isomer
towards
nucleophiles
solution.
addition
to
mechanism
underlaying
structure‐switch
relationships,
analyze
potential
prospects
aryloxyquinones
optically
switchable
materials
devices.
Due
ability
efficiently
photoswitch
solid
are
indeed
attractive
candidates
for
such
devices,
including
electronics
(optically
controllable
circuits,
switches,
transistors,
memories,
displays),
porous
materials,
actuators,
photoactivated
sensors,
many
more.
This
review
intended
serve
as
a
guide
researchers
who
wish
use
photoswitchable
development
photocontrollable
processes.
Chemical Society Reviews,
Journal Year:
2019,
Volume and Issue:
48(12), P. 3406 - 3424
Published: Jan. 1, 2019
Spiropyrans
have
played
a
pivotal
role
in
the
emergence
of
field
chromism
following
their
discovery
early
20th
century,
with
almost
ubiquitous
use
materials
applications
especially
since
photochromism
was
discovered
1952.
Their
versatility
continues
to
lend
them
application
increasingly
diverse
fields
not
least
due
recent
discoveries
properties
that
expanded
utility
extensively.
This
review
provides
an
overview
rich
history
and
highlights
contemporary
relevance
spiropyrans.
Journal of the American Chemical Society,
Journal Year:
2022,
Volume and Issue:
144(5), P. 2022 - 2033
Published: Jan. 6, 2022
The
development
of
a
dynamic
chemistry
toolbox
to
endow
materials
behavior
has
been
key
the
rational
design
future
smart
materials.
rise
supramolecular
and
covalent
offers
many
approaches
construction
polymers
that
can
adapt,
respond,
repair,
recycle.
Within
this
toolbox,
building
blocks
based
on
1,2-dithiolanes
have
become
an
important
scaffold,
featuring
their
reversible
polymerization
mediated
by
disulfide
bonds,
which
enables
unique
class
at
intersection
adaptable
networks.
This
Perspective
aims
explore
as
versatile
structural
unit
for
summarizing
state
art
well
providing
overview
fundamental
challenges
involved
in
research
area
its
potential
directions.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
35(10)
Published: Oct. 14, 2022
Photoresponsive
supramolecular
polymers
are
well-organized
assemblies
based
on
highly
oriented
and
reversible
noncovalent
interactions
containing
photosensitive
molecules
as
(co-)monomers.
They
have
attracted
increasing
interest
in
smart
materials
dynamic
systems
with
precisely
controllable
functions,
such
light-driven
soft
actuators,
photoresponsive
fluorescent
anticounterfeiting
light-triggered
electronic
devices.
The
present
review
discusses
light-activated
used
their
main
photo-induced
changes,
e.g.,
geometry,
dipole
moment,
chirality.
Based
these
distinct
formed
by
exhibit
disassembly
reassembly.
As
a
consequence,
polymerization,
"depolymerization,"
regulation
of
the
lengths
topologies
observed.
Moreover,
light-controlled
functions
polymers,
actuation,
emission,
chirality
transfer
along
length
scales,
highlighted.
Furthermore,
perspective
challenges
future
opportunities
is
presented.
Besides
challenge
moving
from
harmful
UV
light
to
visible/near
IR
avoiding
fatigue,
enabling
biomedical
applications,
include
actuators
helical
motion,
light-modulated
information
transmission,
optically
recyclable
materials,
multi-stimuli-responsive
systems.
Journal of the American Chemical Society,
Journal Year:
2022,
Volume and Issue:
144(14), P. 6278 - 6290
Published: March 15, 2022
Photomechanical
molecular
crystals
are
promising
candidates
for
photoactuators
and
can
potentially
be
implemented
as
smart
materials
in
various
fields.
Here,
we
synthesized
a
new
crystal,
(E)-3-(naphthalen-1-yl)acrylaldehyde
malononitrile
((E)-NAAM),
that
undergo
solid-state
[2
+
2]
photocycloaddition
reaction
under
visible
light
(≥400
nm)
illumination.
(E)-NAAM
microcrystals
containing
symmetric
twinned
sealed
cavities
were
prepared
using
surfactant-mediated
crystal
seeded
growth
method.
When
exposed
to
light,
the
hollow
exhibited
robust
photomechanical
motions,
including
bending
dramatic
directional
expansion
of
up
43.1%
elongation
original
length
before
fragmentation
due
photosalient
effect.
The
inside
could
store
different
aqueous
dye
solutions
approximately
one
month
release
instantly
upon
irradiation.
A
unique
slow–fast–slow
kinematic
process
was
observed,
suggesting
significant
rearrangements
during
illumination
period,
leading
an
average
anisotropic
37.0%
(±3.8%).
structure
geometry
changes
accompanying
reaction,
which
propels
photochemistry
nearly
100%
completion,
also
facilitate
expansion.
Our
results
provide
possible
way
rationally
design
structures
engineer
morphologies
promote
more
interesting
behaviors.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 7, 2025
Abstract
Developing
multifunctional
photocatalysts
with
intelligent
self‐adjusting
is
of
great
significance
in
the
photocatalytic
process.
Herein,
a
smart
covalent
organic
framework
(Por‐HQ‐COF)
phenol‐quinone
conversion
structure
pH
changes
constructed
for
photooxidation,
photoreduction,
and
H
2
O
production.
As
photocatalyst,
Por‐HQ‐COF
can
convert
into
Por‐BQ‐COF
intelligently
trigger
including
solution
pH,
vice
versa.
The
reconstruction
not
only
significantly
alters
morphologies
specific
surface
areas
COF,
but
also
leads
to
an
entirely
change
band
energy
charge
distribution
influence
photoelectric
properties.
result,
under
acidic
conditions,
converts
automatically
photoreduce
high
concentration
Cr(VI)
Cr(III)
efficiently.
Under
neutral
superoxide
anions
(·O
−
)
initiate
accelerate
photooxidation
degrade
high‐concentration
TC.
alkaline
Por‐BQ‐COF,
effectively
photosynthesize
(1525
µmol
h
−1
g
at
λ
>
420
nm)
absence
any
sacrificial
reagents,
reveal
strong
alkalinity
lower
barrier
hydrogen
extraction
from
clarify
active
sites
This
work
provides
new
strategy
developing
fulfill
application
across
full
environment.
InfoMat,
Journal Year:
2020,
Volume and Issue:
2(5), P. 791 - 806
Published: March 18, 2020
Abstract
Luminogens
that
exhibit
stimulus‐responsive
room
temperature
phosphorescence
(RTP)
have
attracted
significant
attention
for
their
applications
in
a
wide
range
of
fields
such
as
data
storage,
sensors,
and
bio‐imaging.
However,
very
few
materials
are
known,
partly
because
the
unclear
internal
mechanism.
In
this
review,
we
summarize
recent
advances
field
RTP
purely
organic
luminogens,
focusing
on
unique
emission
behaviors
mechanisms
governing
phenomena.
We
also
attempt
to
identify
relationship
between
mechanism,
possible
applications.
image
SmartMat,
Journal Year:
2020,
Volume and Issue:
1(1)
Published: Nov. 25, 2020
Abstract
Developing
high‐performance
adhesive
materials
not
only
aims
at
industrial
and
social
requirements
but
also
bears
the
fundamental
importance
of
understanding
chemical
factors
biological
adhesion
to
develop
biomimetic
materials.
Owing
wide
development
supramolecular
chemistry,
numerous
tools
are
exploited
proved
be
reliable
in
replacement
traditional
covalent
by
reversible
noncovalent
or
dynamic
Taking
advantage
these
ready‐to‐use
toolboxes,
rising
promising
toward
“smart”
adhesives,
that
is,
enabling
responsiveness,
reversibility,
recyclability.
Compared
with
polymeric
materials,
low‐molecular‐weight
adhesives
feature
chemically
precise
structure,
easier
engineering
molecular
design,
hence
higher
reproducibility.
However,
it
remains
highly
challenging
make
feedstocks.
This
review
will
focus
on
recent
advancement
construction
small‐molecule
self‐assembly.
The
design
guidelines
consideration
scale
discussed
summarized
how
enhance
strength
adhesives.
Meanwhile,
owing
nature
self‐assembly,
several
functions
such
presented,
as
stimuli–responsiveness
adaptiveness.
Finally,
current
challenges
future
perspectives
this
emerging
field
proposed.
