ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(24), P. 31313 - 31321
Published: June 5, 2024
In
this
work,
two
zero-dimensional
(0D)
metal
halide
hybrids
L2ZnBr4
[1,
L
=
(E)-4-(2-(1H-pyrrol-3-yl)vinyl)-1-methylpyridin-1-ium]
and
L6Pb3Br12
(2)
were
prepared,
which
demonstrated
photochromism
photoinduced
cracking.
Upon
irradiation
at
450
nm,
a
single
crystal-to-single
crystal
transformation
occurred
as
result
of
the
[2
+
2]
photocycloaddition
L.
Interestingly,
compared
to
complete
in
1,
only
two-thirds
monomers
could
be
photodimerized
2
because
difference
orientation.
1
shows
reversible
photochromic
behavior
including
rapid
response
time,
few
cracks,
high
conversion
rate,
good
reaction
reversibility,
while
exhibits
no
significant
color
change
but
distinct
cracking
large
local
lattice
strain
induced
by
inhomogeneous
anisotropic
deformation.
Moreover,
results
shift
photoluminescence
2,
attributed
variation
conjugation
π
electrons
distortion
clusters.
As
proof-of-concept,
optical
writing
is
for
1.
These
findings
provide
new
insights
into
design
stimuli-responsive
multifunctional
materials.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 30, 2024
Abstract
Applying
the
orthogonal
principle
for
distinguishable
second
near‐infrared
(NIR‐II)
emissions
has
brought
new
dimensions
ratio
fluorescence
imaging
(RFI)
detection
and
information
encryption,
deepening
tissue
depth
improving
signal‐to‐noise
security.
However,
NIR‐II
underlying
these
advanced
optical
applications
have
been
reported
only
in
heterogeneous
structures
mixtures,
limiting
their
practicality
potential
impact.
Herein,
NIR‐I‐activated
NIR‐IIb/c
(1530/1825
nm)
nanoparticles
(ONNPs)
are
developed
by
spatially
separated
doping
of
Tm
3+
Er
emitter
upon
switching
808
980
nm
excitations.
RFI
techniques
emission
ONNPs
used
to
demonstrate
vessel
based
on
wavelength‐dependent
attenuation
properties
tissue.
The
superiority
coding
encoding
process
a
4
×
1
binary
matrix
is
demonstrated
anticounterfeiting
decryption
quick‐response
(QR)
code
storage.
research
progress
this
probe
will
drive
development
biomedical
sensing,
safety,
future
biophotonics
technologies.
RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(25), P. 17434 - 17439
Published: Jan. 1, 2024
During
heating,
NI-mPCz
shows
a
red
shift,
then
blue
and
finally
another
shift.
These
shifts
result
from
phase
transitions
in
its
crystalline
structures
at
different
temperatures,
affecting
photophysical
properties.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(24), P. 31313 - 31321
Published: June 5, 2024
In
this
work,
two
zero-dimensional
(0D)
metal
halide
hybrids
L2ZnBr4
[1,
L
=
(E)-4-(2-(1H-pyrrol-3-yl)vinyl)-1-methylpyridin-1-ium]
and
L6Pb3Br12
(2)
were
prepared,
which
demonstrated
photochromism
photoinduced
cracking.
Upon
irradiation
at
450
nm,
a
single
crystal-to-single
crystal
transformation
occurred
as
result
of
the
[2
+
2]
photocycloaddition
L.
Interestingly,
compared
to
complete
in
1,
only
two-thirds
monomers
could
be
photodimerized
2
because
difference
orientation.
1
shows
reversible
photochromic
behavior
including
rapid
response
time,
few
cracks,
high
conversion
rate,
good
reaction
reversibility,
while
exhibits
no
significant
color
change
but
distinct
cracking
large
local
lattice
strain
induced
by
inhomogeneous
anisotropic
deformation.
Moreover,
results
shift
photoluminescence
2,
attributed
variation
conjugation
π
electrons
distortion
clusters.
As
proof-of-concept,
optical
writing
is
for
1.
These
findings
provide
new
insights
into
design
stimuli-responsive
multifunctional
materials.
