ACS Energy Letters,
Journal Year:
2024,
Volume and Issue:
unknown, P. 484 - 495
Published: Dec. 27, 2024
Photochromism
(PC)
involves
profound
and
complex
optoelectronic
processes
the
interplay
of
color
centers
host
matrix.
To
date,
achieving
a
fast
PC
response
speed
remains
challenge.
Here,
new
"twin-perovskite"
niobate
ceramic,
Ba8Ti3Nb4O24:
Pr3+
(BTN:Pr3+),
exhibiting
remarkable
time
down
to
20
ms
record
contrast
42.3%
among
niobate-based
materials,
is
identified.
Experimental
theoretical
approaches
reveal
key
role
oxygen
vacancy
in
reaction.
It
proposed
that
related
short
spent
redistributing
charge
carriers
due
single
type
center
quick
transport
within
densely
packed
crystal
framework
featuring
face-sharing
twin-plane
structure.
Finally,
we
present
demo
experiments
real-time
write-display
information
repeatable
manner
demonstrate
bit-by-bit
optical
storage
at
high
write
speeds
could
be
read
dual
modes.
Science Advances,
Journal Year:
2024,
Volume and Issue:
10(7)
Published: Feb. 16, 2024
Achieving
high-contrast
tricolor
emissive
regulation
of
a
single-component
molecule
using
single
type
external
stimulus
is
highly
desirable
but
challenging.
In
the
present
study,
we
report
symmetric
acceptor-donor-acceptor
(A-D-A)–type
aggregation-induced
emission-active
luminogen,
which
displays
sequential
fluorescence
switching
just
by
anisotropic
mechanical
grinding.
Specifically,
upon
light
grinding,
an
orange–yellow-to-blue
hypsochromic
mechanofluorochromic
response
with
distinct
color
contrast
(change
in
maximum
emission
wavelength,
Δλ
em,max
=
122
nm)
noticed,
and
slightly
ground
solid
exhibits
blue-to-red
(Δλ
185
bathochromic
conversion
vigorous
Thus,
luminogen
developed
here,
can
realize
wide-range
>
100
hypso-
mechanochromisms
simultaneously.
The
tricolored
phenomenon
attributed
to
two
different
morphological
transitions
involving
crystalline-to-crystalline
crystalline-to-amorphous
states.
Furthermore,
three
information
anticounterfeiting
systems
are
presented
here.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
11(8)
Published: Nov. 9, 2023
Abstract
Near‐infrared
(NIR)
light
is
well‐suited
for
the
optical
imaging
and
wireless
phototherapy
of
malignant
diseases
because
its
deep
tissue
penetration,
low
autofluorescence,
weak
scattering,
non‐invasiveness.
Rare
earth
nanoparticles
(RENPs)
are
promising
NIR‐responsive
materials,
owing
to
their
excellent
physical
chemical
properties.
The
4f
electron
subshell
lanthanides,
main
group
rare
elements,
has
rich
energy‐level
structures.
This
facilitates
broad‐spectrum
light‐to‐light
conversion
other
forms
energy,
such
as
thermal
energies.
In
addition,
abundant
loadable
modifiable
sites
on
surface
offer
favorable
conditions
functional
expansion
RENPs.
this
review,
authors
systematically
discuss
processes
mechanisms
underlying
response
RENPs
NIR
summarize
recent
advances
in
applications
imaging,
photothermal
therapy,
photodynamic
photoimmunotherapy,
optogenetics,
light‐responsive
drug
release.
Finally,
challenges
opportunities
application
under
activation
considered.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 22, 2024
Photoluminescent
metallopolymers
displaying
photo-stimuli-responsive
properties
are
emerging
as
promising
materials
with
versatile
applications
in
photo-rewritable
patterns,
wearable
UV
sensors,
and
optical
encryption
anti-counterfeiting.
However,
integrating
these
into
practical
that
require
fast
response
times,
lightweight
qualities,
fatigue
resistance,
multiple
capabilities
poses
challenges.
In
this
study,
luminescent
photochromic
lanthanide
(Ln)
rapid
self-healing
developed
by
cross-linking
terpyridine
(Tpy)-
spiropyran
(SP)-
functionalized
polyurethane
chains
through
Ln-Tpy
coordination
bonds
H-bonds
among
polymer
chains.
The
resulting
products
exhibit
a
range
of
intriguing
features:
i)
photo-stimuli
responsiveness
using
monomers
without
additional
dopants;
ii)
dual-emitting
performance
under
UV-light
due
to
open-ring
moieties;
iii)
satisfactory
mechanical
abilities
from
chains;
iv)
control
switches
for
luminescence
colors
photostimulation
or
feed
ratio
adjustments.
Leveraging
attributes,
the
material
introduces
novel
opportunities
light-writing
applications,
advanced
information
encryption,
UV-sensing
devices,
insights
designing
multifunctional
intelligent
future.
Abstract
Owing
to
the
large
storage
capacity,
transparent
luminescent
glass
with
photo‐induced
coloration
properties
has
attracted
considerable
interest
in
recent
years.
However,
lots
of
photochromic
(PC)
mechanisms
for
are
related
ionic
valence
transformation,
and
study
associated
defects‐induced
photochromism
is
limited.
Herein,
a
kind
Sm
3+
doped
PC
cadmium
fabricated,
which
mechanism
systematically
investigated
by
various
techniques,
such
as
XPS
spectra,
thermoluminescence
EPR
etc.
The
results
show
that
should
be
due
presence
oxygen
vacancy‐related
electron
centers.
Under
365
nm
light
irradiation,
color
turns
from
colorless
brown,
exhibiting
contrast,
62%.
Utilizing
re‐absorption
process
between
absorption
spectra
emission/excitation
emission
intensity
reversibly
regulated,
indicating
their
promising
applications
an
optical
medium.
Communications Materials,
Journal Year:
2024,
Volume and Issue:
5(1)
Published: April 10, 2024
Abstract
Structural
transformations
of
metal-organic
frameworks
(MOFs)
go
through
a
complex
energy
landscape
with
multiple
intermediate
states.
Although
the
allow
controlling
functional
properties
MOFs,
an
imbalance
between
MOF
flexibility
and
rigidity
sets
fundamental
barrier
to
achieving
fast
transformations.
Here,
we
study
stimuli-responsive
structural
transformation
in
2D
assembled
from
paddle-wheel
secondary
building
units
joined
by
semi-flexible
organic
ligand
1,2,4-triazole
carboxylate
groups
rigid
adamantane
cage
them.
The
structure
results
distinctive
combination
rigidity,
thus,
facilitating
continuous
driven
laser
light.
We
reveal
laser-induced
anisotropic
thermal
expansion
nature
such
transformation,
initiating
optical
changes
MOF.
latter
is
utilized
for
highly
repeatable
modulation
over
10,000
cycles.
endurance
MOF-based
modulator
during
1
year
storage
at
ambient
conditions
paves
way
design
tunable
robust
MOFs
diverse
applications.
Applied Organometallic Chemistry,
Journal Year:
2025,
Volume and Issue:
39(3)
Published: Feb. 26, 2025
ABSTRACT
A
two‐dimensional
(2D)
zinc(II)
coordination
polymer
CP‐1
,
[Zn(im
2
bod)(bdc)]
n
(im
bod
=
4,6‐bis(imidazol‐1‐yl)‐2,1,3‐benzoxadiazole,
bdc
2−
1,4‐benzenedicarboxylate),
was
synthesized
and
fully
characterized.
crystallizes
in
the
monoclinic
crystal
system,
space
group
P
1
/n.
Zn
2+
ions
adopt
a
four‐coordinated
distorted
tetrahedral
geometry.
The
structure
of
comprises
layer
consisting
cations
connected
by
im
ligands.
adjutant
layers
participate
π‐π
stacking
interactions
via
benzene
2,1,3‐benzoxadiazole
rings.
demonstrated
blue
emission
with
maximum
at
490
nm
photoluminescence
quantum
yield
24%.
Luminescent
sensing
properties
aqueous
suspension
toward
metal
were
evaluated,
selective
quenching
response
observed
Ga
3+
limit
detection
10
μM.
Advanced Optical Materials,
Journal Year:
2024,
Volume and Issue:
12(11)
Published: Jan. 4, 2024
Abstract
Recently,
zero‐dimensional
(0D)
metal
halides
with
highly
efficient
tunable
emission
have
shown
broad
prospects
in
the
field
of
anti‐counterfeiting.
However,
limited
colors
and
low
resolution,
as
well
severe
thermal
quenching
self‐trapped
excitons,
greatly
constrained
their
applications.
In
this
study,
a
high
stability
compound
by
precisely
manipulating
multi‐exciton
within
Sb‐doped
hybrid
manganese
chloride
is
developed,
which
exhibits
three
(green,
orange,
yellow).
It
discovered
that
significant
color
changes
low‐temperature
range.
Optical
temperature
sensing,
anti‐counterfeiting,
information
encryption
models
based
on
are
successfully
designed.
This
research
proposes
an
effective
strategy
for
designing
novel
eco‐friendly
anti‐counterfeiting
sensing
materials,
paving
way
optical
multi‐key
encryption‐decryption
