Angewandte Chemie,
Journal Year:
2023,
Volume and Issue:
136(10)
Published: Dec. 8, 2023
Abstract
Compounds
with
multiple
photoswitching
units
are
appealing
for
complex
photochemical
control
of
molecular
materials
and
nanostructures.
Herein,
we
synthesized
novel
meta‐
para‐
connected
(related
to
the
nitrogen
indoline)
azobenzene‐spiropyran
dyads,
in
which
central
benzene
unit
is
shared
by
both
switches.
We
investigated
their
photochemistry
using
static
time‐resolved
transient
absorption
spectroscopy
as
well
quantum
chemical
calculations.
In
meta
‐compound,
individual
components
photochemically
decoupled
due
pattern.
compound
spiro‐connectivity
leads
a
bifunctional
photoswitchable
system
red‐shifted
absorption.
The
azobenzene
spiropyran
can
thus
be
addressed
switched
independently
light
appropriate
wavelength.
Through
different
connectivity
patterns
two
orthogonally
systems
have
been
obtained
promising
candidates
applications
control.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(32)
Published: June 12, 2024
Abstract
Thermo‐responsive
smart
materials
have
aroused
extensive
interest
due
to
the
particular
significance
of
temperature
sensing.
Although
various
photoluminescent
are
explored
in
thermal
detection,
it
is
not
applicable
enough
X‐ray
radiation
environment
where
accuracy
and
reliability
will
be
influenced.
Here,
a
strategy
proposed
by
introducing
concept
radio‐luminescent
functional
building
units
(RBUs)
construct
thermo‐responsive
lanthanide
metal‐organic
frameworks
(Ln‐MOFs)
scintillators
for
self‐calibrating
thermometry.
The
rational
designs
RBUs
(including
organic
ligand
Tb
3+
/Eu
)
with
appropriate
energy
levels
lead
high‐performance
radio‐luminescence.
Ln‐MOFs
exhibit
perfect
linear
response
X‐ray,
presenting
low
dose
rate
detection
limit
(min
≈156.1
nGy
air
s
‐1
).
Self‐calibrating
based
on
ratiometric
XEL
intensities
achieved
good
absolute
relative
sensitivities
6.74
8.1%K
,
respectively.
High
light
yield
(max
≈39000
photons
MeV
−1
),
imaging
spatial
resolution
≈18
lp
mm
irradiation
stability
(intensity
≈100%
at
368
K
total
up
215
Gy
giant
color
transformation
visualization
benefit
applications,
especially
situ
imaging.
Such
provides
promising
way
develop
novel
photonic
excellent
scintillator
performances.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(23)
Published: March 26, 2024
The
development
of
photoresponsive
systems
with
non-invasive
orthogonal
control
by
distinct
wavelengths
light
is
still
in
its
infancy.
In
particular,
the
design
photochemically
triggered-orthogonal
integrated
into
solid
materials
that
enable
multiple
dynamic
over
their
properties
remains
a
longstanding
challenge.
Here,
we
report
and
reversible
two
types
photoswitches
an
porous
framework,
is,
visible-light
responsive
o-fluoroazobenzene
nitro-spiropyran
motifs.
constructed
material
can
be
selectively
controlled
different
thus
generating
four
states
providing
basis
for
multifunctional
materials.
Solid-state
NMR
spectroscopy
demonstrated
selective
transformation
azobenzene
switch
bulk,
which
turn
modulates
N
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(46)
Published: July 22, 2024
Thorium,
a
predominant
actinide
in
the
Earth's
crust,
presents
significant
environmental
and
health
risks
due
to
its
radioactive
nature.
These
are
particularly
pronounced
during
mining
processing
of
monazite
for
rare
earth
elements
(REEs),
which
contain
substantial
thorium
concentrations.
Current
instrumental
analysis
methods
thorium,
offer
high
accuracy
but
require
laborious
sample
preparations
expensive
instruments,
making
them
unsuitable
on-site
analysis.
Herein,
we
present
class
color-tunable
luminescent
lanthanide-based
metal-organic
frameworks
(Ln-MOFs)
as
fluorochromic
sensors
Th
Chemical Physics Reviews,
Journal Year:
2024,
Volume and Issue:
5(1)
Published: Feb. 1, 2024
Bridging
the
current
gap
between
precision
and
efficiency
demonstrated
by
natural
systems
synthetic
materials
requires
interfacing
independently
controlling
multiple
stimuli-responsive
building
blocks
in
a
single
platform.
The
mentioned
orthogonal
control
over
material
properties
(i.e.,
ability
to
selectively
activate
one
moiety
without
affecting
another)
could
pave
way
for
multitude
of
applications,
including
logic-gated
optoelectronics,
on-demand
drug
delivery
platforms,
molecular
shuttles,
example.
In
this
Review,
we
highlight
recent
successful
strategies
achieve
using
combination
independent
stimuli.
We
begin
surveying
fundamental
studies
multi-stimuli-responsive
systems,
which
utilize
variety
stimuli
(e.g.,
spiropyran,
diarylethene,
or
dihydroazulene
derivatives),
because
these
lay
foundation
design
containing
more
than
controlled
fragment.
As
next
step,
overview
emerging
field
focusing
on
are
composed
unique
unit
that
can
respond
stimuli,
distinct
excitation
wavelengths,
light,
heat,
pH,
potential,
ionic
strength.
Recent
advances
clearly
demonstrate
how
strategic
coupling
orthogonally
units
allow
selective
modulation
range
properties,
such
as
conductivity,
catalytic
performance,
biological
activity.
Thus,
highlighted
foreshadow
role
with
impact
generation
photopharmacology,
nanotechnology,
biomimetics.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(17), P. 6218 - 6228
Published: Jan. 1, 2024
Photoswitchable
fluorescent
nanoparticles
(PF
NPs)
are
an
emerging
type
of
optical
nanomaterial
with
distinct
photo-responsive
properties,
which
have
shown
promising
applications
in
diverse
fields
recently.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 7, 2024
Abstract
Photochromic
materials
with
properties
that
can
be
dynamically
tailored
as
a
function
of
external
stimuli
are
rapidly
expanding
field
driven
by
applications
in
areas
ranging
from
molecular
computing,
nanotechnology,
or
photopharmacology
to
programable
heterogeneous
catalysis.
Challenges
arise,
however,
when
translating
the
rapid,
solution‐like
response
stimuli‐responsive
moieties
solid‐state
due
intermolecular
interactions
imposed
through
close
packing
bulk
solids.
As
result,
integration
photochromic
compounds
into
synthetically
porous
matrices,
such
metal‐organic
frameworks
(MOFs),
has
come
forefront
an
emerging
strategy
for
material
development.
This
review
highlights
how
core
principles
reticular
chemistry
(on
example
MOFs)
play
critical
role
performance,
surpassing
limitations
previously
observed
solution
solid
state.
The
symbiotic
relationship
between
photoresponsive
and
focus
on
synthesis
creates
avenues
toward
tailorable
photoisomerization
kinetics,
directional
energy
charge
transfer,
switchable
gas
sorption,
synergistic
chromophore
communication
is
discussed.
not
only
focuses
recent
cutting‐edge
advancements
development,
but
also
novel,
vital‐to‐pursue
pathways
multifaceted
functional
realms
energy,
technology,
biomedicine.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 25, 2025
Metal–organic
polyhedra
(MOPs)
are
versatile
supramolecular
building
blocks
for
the
design
of
highly
porous
frameworks
by
reticular
assembly
because
their
diverse
geometries,
multiple
degrees
freedom
regarding
functionalization,
and
accessible
metal
sites.
Lipophilic
functionalization
is
demonstrated
to
enable
rational
crystallization
with
photoactive
N-donor
ligands
in
an
aliphatic
solvent
achieve
multiaxially
aligned
photoresponsive
diarylethene
(DTE)
moieties
3D
(DUT-210(M),
M
=
Cu
Rh)
featuring
cooperative
switchability.
Combined
experimental
theoretical
investigations
based
on
situ
PXRD,
UV–vis
spectroscopy,
density
functional
theory
calculations
demonstrate
deliberate
kinetic
engineering
photoswitchability
variations
metal–ligand
bond
strengths.
The
novel
important
step
toward
knowledge-based
development
photon-driven
motors,
actuators,
release
systems.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
63(10)
Published: Dec. 8, 2023
Compounds
with
multiple
photoswitching
units
are
appealing
for
complex
photochemical
control
of
molecular
materials
and
nanostructures.
Herein,
we
synthesized
novel
meta-
para-
connected
(related
to
the
nitrogen
indoline)
azobenzene-spiropyran
dyads,
in
which
central
benzene
unit
is
shared
by
both
switches.
We
investigated
their
photochemistry
using
static
time-resolved
transient
absorption
spectroscopy
as
well
quantum
chemical
calculations.
In
meta-compound,
individual
components
photochemically
decoupled
due
meta-pattern.
para-compound
spiro-connectivity
leads
a
bifunctional
photoswitchable
system
red-shifted
absorption.
The
azobenzene
spiropyran
can
thus
be
addressed
switched
independently
light
appropriate
wavelength.
Through
different
connectivity
patterns
two
orthogonally
systems
have
been
obtained
promising
candidates
applications
control.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(44)
Published: July 3, 2024
Abstract
Synthetic
molecular
photoswitches
have
taken
center
stage
as
high‐precision
tools
to
introduce
light‐responsiveness
at
the
smallest
scales.
Today
they
are
found
in
all
areas
of
applied
chemistry,
covering
materials
research,
chemical
biology,
catalysis,
or
nanotechnology.
For
a
next
step
applicability
truly
orthogonal
photoswitching
is
highly
desirable
but
date
such
independent
addressability
different
remains
challenging.
Herein
we
present
first
example
all‐visible,
all‐light
responsive,
and
path‐
photoswitching.
By
combining
two
recently
developed
indigoid
‐
peri‐anthracenethioindigo
rhodanine‐based
chromophore
four‐state
system
established
each
state
can
be
accessed
high
yields
completely
independently
also
with
visible
light
irradiation
only.
The
four
states
give
rise
colors,
which
transferred
solid
polymer
matrix
yield
versatile
multi‐state
photochromic
material.
Further,
combination
fluorescent
dye
third
component
possible,
demonstrating
this
all‐photonic
logic
behavior
information
processing.
