Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 30, 2024
Electrochromism
stands
out
as
a
highly
promising
technology
for
applications
including
variable
optical
attenuators,
switches,
transparent
displays,
and
dynamic
windows.
The
pursuit
of
high-contrast
tunability
in
electrochromic
devices
remains
challenging
goal.
Here,
the
first
photochromic
hydrogel
electrolyte
is
reported
electro-
photo-dual
responsive
chromatic
that
yield
high
transmittance
contrast
at
633
nm
(ΔT
=
83.1%),
along
with
tinted
below
1.5%.
Such
not
only
hold
great
promise
windows
but
also
enable
seamless
transitions
between
augmented
reality
(AR)
glass
opaque
virtual
(VR)
glass.
These
findings
introduce
an
innovative
strategy
design
dimmers,
opening
new
avenues
development
devices.
Chemistry of Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 28, 2024
Hydrogen
bronzes
can
be
used
as
hydrogen
donors
for
the
broad
class
of
reactions
involving
proton-coupled
electron
transfer
(PCET).
Here,
we
describe
a
method
to
prepare
platinum-decorated
tungsten
bronzes,
Pt@HxWO3·nH2O
with
n
=
0,
1,
and
2,
by
reacting
pristine
oxides
at
modest
temperatures
mild
reducing
agent,
H3PO2,
H2PtCl6
in
an
aqueous
solution.
We
explored
tunability
kinetics
this
reaction
compared
it
that
archetypal
gas–solid
spillover.
demonstrate
identity
noble
metal
affects
extent
bronze
reduction.
This
suggests
mechanism
proceeds
via
adsorption
hydrogen-atom
species
on
metal.
Finally,
ability
Pt-decorated
hydrogenate
model
H+/e–
acceptor,
2,2,6,6-tetramethyl-1-piperidinyloxyl
(TEMPO).
The
phases
return
their
fully
oxidized
states
along
subsequent
reduction
TEMPO
TEMPOH.
Overall,
work
demonstrates
solution-phase
obtain
which
then
perform
reactions,
providing
pathway
use
extended
transition
stoichiometric
reagents
classes
hydrogenation
reactions.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
17(1), P. 1682 - 1693
Published: Dec. 25, 2024
Photochromic
films
have
attracted
increasing
attention
for
their
potential
in
information
storage
and
photoswitchable
devices.
Developing
novel
photochromic
materials
is
still
a
highly
challenging
topic.
In
this
work,
we
successfully
obtained
an
unprecedented
mixed-heteroatom-templated
ErIII-incorporated
polyoxometalate
[H2N(CH3)2]18Na2K2H12{Er2(H2O)10W14O43[SeTeW15O54][B-α-TeW9O33]2}2·117H2O
(1)
by
concurrently
introducing
the
[TeO3]2–
[SeO3]2–
heteroanion
templates
into
Er3+/WO42–
system.
The
most
attractive
feature
that
polyoxoanion
of
1
consists
three
kinds
building
units
such
as
classical
trivacant
Keggin
[B-α-TeW9O33]8–,
rarely
seen
TeIV–SeIV-oriented
Dawson-like
[SeTeW15O54]10–,
extraordinary
[W14O43]2–
with
infrequent
[WVIO7(WVI5O20)]18–
pentagon
subunit.
Based
on
photochromism
polyoxometalates
presence
organic
electron
donors
under
light
irradiation,
composite
film
GEL/TEG/1
was
fabricated
mixing
gelatin
(GEL)
triethylene
glycol
(TEG).
shows
good
properties
365
nm
UV
irradiation.
changed
color
within
15
min
endow
fast
easy
"'printing'"
performance.
"printed"
text
or
pattern
can
be
erased
35
h
atmospheric
environment
at
room
temperature,
colored
quickly
3
60
°C
reused
printing
again.
Moreover,
coloration
decoloration
process
repeated
least
10
cycles,
indicating
possesses
favorable
cycle
Further,
used
ink-free
anti-counterfeiting
encryption.
This
work
not
only
offers
workable
method
constructing
containing
different
uncommon
but
also
some
significant
insights
applications
polyoxometalate-based
materials.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 30, 2024
Electrochromism
stands
out
as
a
highly
promising
technology
for
applications
including
variable
optical
attenuators,
switches,
transparent
displays,
and
dynamic
windows.
The
pursuit
of
high-contrast
tunability
in
electrochromic
devices
remains
challenging
goal.
Here,
the
first
photochromic
hydrogel
electrolyte
is
reported
electro-
photo-dual
responsive
chromatic
that
yield
high
transmittance
contrast
at
633
nm
(ΔT
=
83.1%),
along
with
tinted
below
1.5%.
Such
not
only
hold
great
promise
windows
but
also
enable
seamless
transitions
between
augmented
reality
(AR)
glass
opaque
virtual
(VR)
glass.
These
findings
introduce
an
innovative
strategy
design
dimmers,
opening
new
avenues
development
devices.
