Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 27, 2024
As
an
emerging
class
of
hybrid
materials,
donor–acceptor
(D–A)
crystals
with
photoactive
organic
and
inorganic
components
have
gradually
become
ideal
platform
for
photochromic
materials.
Wherein
the
most
available
are
electron-poor
naphthalenediimide,
pyridinium,
triazine
derivatives,
units
electron-rich
polyoxometalates
metal
halides.
Herein,
we
introduced
pyridinium
moieties
into
naphthalenediimide
core
by
conjugated
bonds
so
as
to
increase
electron
deficiency
species
enhanced
properties.
Four
anion-π
interaction
directed
crystals,
(Me2DPNDI)3·(PW12O40)2
(1),
(Et2DPNDI)3·(DMSO)2·(PMo12O40)2
(2),
(Et2DPNDI)3·(PW12O40)2
(3),
(Et2DPNDI)2·(SiMo12O40)
(4),
been
obtained,
which
possess
reversible,
naked-eye
perceptible
color
changes
varying
light
response
rates.
These
rates
follows:
3
>
1
4
2.
expected,
such
D–A
naphthalenediimide-pyridinium
salts
feature
both
photo-
thermally
induced
transfer
pathways,
along
interactions.
Consequently,
they
demonstrate
a
higher
rate
photochromism
compared
those
hybrids
containing
or
derivatives
acceptors.
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(37), P. 17108 - 17115
Published: Sept. 3, 2024
The
heteroanion
(HA)
component
plays
an
important
role
in
the
templating
of
heteropolyoxometalate
(HPA)
structures,
but
polyoxometalates
(POMs)
formed
from
two
different
templates
are
rarely
reported.
Herein,
we
present
a
five-layer
POM
[H
Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 29, 2025
Two
novel
3D
inorganic-organic
hybrids
based
on
[V6O18]6-/[V3O9]3-
clusters,
[Cu18(bbpy)18(V6O18)6]·3H2O
(1)
and
[Cu4Ag4(pty)4(V3O9)4]·H2O
(2)
(bbpy
=
3,5-bis(1-benzimidazole)
pyridine,
pty
4'-(4″-pyridyl)-2,2':6',2″-terpyridine),
were
isolated
in
the
same
POV/Cu/N-heterocycle
ligand
reaction
systems.
Hybrids
1
2
possess
three-dimensional
bimetallic
frameworks
derived
from
clusters
Cu-organic
complexes.
In
1,
bbpy
ligands
are
grafted
by
Cu2+
to
a
grid
ribbon
2D
sheet,
which
connected
with
benzene-like
[V6O18]6-
yield
framework.
2,
helical
{O-V-O-V-}n
chains
bridged
Cu(II)
ions
into
layer
including
eight-membered
rings
{V6Cu2}
six-membered
{V4Cu2},
adjoining
sheets
joined
Ag-N
coordination
bonds
form
framework
structure.
Moreover,
hybrid
has
superior
electrocatalytic
properties
for
nitrite
reduction
oxidation
of
ascorbic
acid
efficiencies
397.2
96%,
respectively.
Hybrid
displays
coordinated
performance
toward
through
V
Cu
centers.
Meanwhile,
corresponding
theoretical
studies
conducted
evaluate
active
sites
charge
distribution.
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
12(31), P. 11712 - 11722
Published: Jan. 1, 2024
Cu/Ni
Keggin
viologen
complexes
with
one-dimensional
proton
channels
are
synthesized
and
directly
used
as
excellent
materials
for
supercapacitors.
The
1//AC
ASC
exhibits
an
energy
density
of
9.39
W
h
kg
−1
at
a
power
6000
.
Crystal Growth & Design,
Journal Year:
2024,
Volume and Issue:
24(11), P. 4810 - 4818
Published: May 22, 2024
A
combination
of
polyoxometalates
and
viologens
to
construct
discoloration
materials
with
charge
transfer
has
become
attractive
presently.
In
this
work,
four
kinds
POM–viologen
color-changing
were
successfully
synthesized,
namely,
[Cu(1,4-Mbby)2(HPMoVI10MoV2O40)]
(1),
[H2(1,4-Mbby)2]·(SiMo12O40)
(2,
1,4-Mbby·Cl
=
(1-(4-methyl-benzyl)-[4,4']bipyridinyl-1-ium)chloridate),
[H2(Bypy)2]·(SiMo12O40)
(3),
[H(Bypy)]·(Bypy-2)1/2·(PMo12O40)
(4,
Bypy
1-benzyl-4,4′-bipyridyinium
chloride,
Bypy-2
1,1′-dibenzyl-4,4′-bipyridine
chloride).
compound
1,
a
[Cu(1,4-Mbby)2]4+
subunit
caps
on
the
Keggin
anion
build
monosupporting
cluster.
Compounds
2–4
are
discrete
structures
dissociative
POMs
viologens.
All
compounds
1–4
show
good
reversible
photochromic
properties
under
xenon
lamp
(300–400
nm)
irradiation.
Under
stimulation
current,
also
electrochromic
within
certain
range
applied
voltage.
The
these
due
generation
free
viologen
radicals
transfer.
Based
their
properties,
they
can
be
many
fields,
such
as
ultraviolet
detectors,
inkless
printing,
visual
detection
heavy
metal
ions.
These
practical
applications
positive
significance
for
life
production.
Abstract
Chromic
materials
with
multi‐stimuli
responses
have
received
tremendous
attention
from
industry
and
academia
for
their
potential
applications
in
smart
windows,
data
storage,
military
camouflage,
molecular
switches,
modulators,
etc.
To
develop
multi‐stimuli‐responsive
color‐changing
high
sensitivity
stability,
a
polyoxometalate‐based
copper‐viologen
framework,
formulated
as
Cu
2
(H
O)
(L)
[PW
12
O
40
][OH
−
]·2H
(
HNU‐97,
H
L
2+
=
1,1′‐(1,4‐phenylenebis(methylene))bis(4‐carboxypyridinium)),
was
prepared
by
mild
one‐step
self‐assembly
strategy.
Structural
analysis
shows
that
HNU‐97
presents
supramolecular
structure
formed
one‐dimensional
framework
polyoxometalates
through
rich
hydrogen
bonds,
anion‐π
interactions,
Discoloration
studies
show
exhibits
reversible
rapid
response
characteristics
to
various
external
stimuli,
such
10
s
UV
radiation,
5
min
heating,
ammonium/amine
vapors.
This
mechanism
reveals
different
excitation
sources
lead
preferential
transfer
directions
of
electrons,
resulting
discoloration
phenomena.
construct
stimuli‐chromic
good
mechanical
properties,
we
successfully
introduced
into
the
poly(vinyl
alcohol)
(PVA)/glycerol
(Gly)
hydrogel
obtain
composite
HNU‐97@PVA/Gly
.
Remarkably,
combines
merits
each
component
can
achieve
significant
behavior
under
both
irradiation
ammonia
atmosphere.
work
will
provide
an
idea
construction
multiple
stimuli‐responsive
materials.
