Advanced Energy Materials,
Год журнала:
2024,
Номер
14(13)
Опубликована: Фев. 12, 2024
Abstract
Solid‐state
solar
thermal
fuels
(SSTFs)
serve
as
efficient
means
of
storing
energy
chemical
potential
in
a
closed
loop
system
and
releasing
it
heat
on‐demand.
An
ideal
SSTF
requires
photoswitchability
visible‐region
without
any
external
heating
well
extended
storage
times.
However,
existing
systems
often
rely
on
ultraviolet
(UV)
light
or
for
photoswitching,
suffer
from
low
Addressing
this,
novel
strategy
is
presented
to
obtain
visible‐light
responsive
SSTFs
designed
operate
effectively
at
room‐temperature
sub‐zero
temperatures
by
innovatively
integrating
tetra‐ortho‐fluoro/chloro
azobenzene
arm
triphenylene
based
liquid
crystal
(LC)
moiety.
The
resulting
compounds
exhibit
discotic
nematic
(N
D
)
mesophases
till
−6.5
°C.
These
excellent
photocyclability,
photostability,
sufficient
half‐lives
cis
states.
Achieving
up
77%
charging
under
sunlight
with
bandpass
filter
62.4%
it,
these
uniquely
demonstrate
chargeability
dischargeability
temperatures.
Upon
discharging,
temperature
rise
6.5
29.5
°C
occur
(25
°C)
(around
−6
−7
°C),
respectively.
This
efficacy
attributed
less‐ordered
N
phases
providing
conformational
freedom
photoisomerization
Energy & Environmental Science,
Год журнала:
2021,
Номер
14(8), С. 4268 - 4291
Опубликована: Янв. 1, 2021
This
review
highlights
the
broad
and
critical
role
of
latent
heat
storage
in
sustainable
energy
systems
including
solar-thermal
storage,
electro-thermal
waste
thermal
regulations.
Joule,
Год журнала:
2021,
Номер
5(12), С. 3116 - 3136
Опубликована: Ноя. 22, 2021
Some
molecular
photoisomers
can
be
isomerized
to
a
metastable
high-energy
state
by
exposure
light.
These
molecules
then
thermally
or
catalytically
converted
back
their
initial
state,
releasing
heat
in
the
process.
Such
reversible
photochemical
process
has
been
considered
for
developing
solar
thermal
(MOST)
systems.
In
this
review,
we
introduce
concept,
criteria,
and
state-of-the-art
of
MOST
systems,
with
an
emphasis
on
three
most
promising
systems:
norbornadiene/quadricyclane,
E/Z-azobenzene,
dihydroazulene/vinylheptafulvene.
After
discussing
fundamental
working
principles,
focus
design
strategies
improving
energy
storage
performance,
remaining
challenges,
potential
areas.
Finally,
summarize
current
incorporation
into
functional
devices
conclude
perspective
challenges
future
directions.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(42)
Опубликована: Май 22, 2023
Abstract
Aromatic
units
tethered
with
an
azo
(−N=N−)
functionality
comprise
a
unique
class
of
compounds,
known
as
molecular
photoswitches,
exhibiting
reversible
transformation
between
their
E
‐
and
Z
‐isomers
in
response
to
photo‐irradiation.
Photoswitches
have
been
explored
extensively
the
recent
past
prepare
dynamic
self‐assembled
materials,
optoelectronic
devices,
responsive
biomaterials,
more.
Most
such
materials
involve
azobenzenes
photoswitch
date,
SciFinder
lists
more
than
7000
articles
1000
patents.
Subsequently,
great
deal
effort
has
invested
improve
photo‐isomerization
efficiency
related
mesoscopic
properties
azobenzenes.
Recently,
azoheteroarenes
cyclic
azobenzenes,
arylazopyrazoles,
arylazoisoxazoles,
arylazopyridines,
diazocines,
emerged
second
generation
photoswitches
beyond
conventional
These
offer
distinct
photoswitching
behavior
which
make
them
highly
promising
candidates
for
multifaceted
applications
ranging
from
photoresponsive
photopharmacophores.
In
this
minireview,
we
introduce
structural
refinement
diazocines
summarize
state‐of‐the‐art
on
utilizing
these
building
blocks
supramolecular
assembly,
material
science
photopharmacology,
highlighting
versatile
photochemical
behavior,
enhanced
functionality,
latest
applications.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(29)
Опубликована: Март 30, 2023
Abstract
The
advances
made
in
the
field
of
stimuli‐responsive
catalysis
during
last
five
years
with
a
focus
on
novel
recently‐emerged
directions
and
applications
have
been
surveyed.
Metal‐free
catalysts
organometallic
complexes,
as
well
biomimetic
systems
extended
structures,
which
display
switchable
catalytic
activity
for
variety
organic
transformations,
are
discussed.
Light‐activated
comprised
photochromic
molecules
capable
modulating
reaction
rate,
yield,
or
enantioselectivity
based
geometric
electronic
changes
associated
photoisomerization
detailed
discussion.
Alternative
stimuli,
including
pH
temperature,
could
be
applied
either
alone
combination
light,
also
addressed.
Recent
clearly
demonstrate
that
capability
to
finely
tune
catalyst
behavior
via
an
external
stimulus
is
powerful
tool
alter
landscape
sustainable
chemistry.
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.
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 13, 2025
Molecular
photoswitch
research
has
drawn
much
attention
in
the
last
century
owing
to
its
great
potential
development
of
smart
materials.
However,
photoswitches
suitable
for
constructing
light-responsive
luminescent
materials
remain
limited,
especially
those
involving
triplet-state
phosphorescence.
Herein,
we
designed
a
novel
molecular
based
on
conformation
transition
phenothiazine
derivatives,
minimizing
steric
hindrance
(-CH
Journal of Materials Chemistry A,
Год журнала:
2021,
Номер
9(15), С. 9798 - 9808
Опубликована: Янв. 1, 2021
Photo-responsive
organic
phase
change
materials
that
can
absorb
filtered
solar
radiation
in
the
visible
range
to
store
both
latent
heat
and
photon
energy
are
demonstrated.
