Two 3D Rare-Earth Double Perovskite Materials Constructed with a Pair of Enantiomers
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 6, 2025
Organic-inorganic
hybrid
chiral
small-molecule
materials
combine
the
inherent
properties
of
both
components;
however,
studies
integrating
chirality
with
rare-earth
double-perovskite
are
limited.
In
this
work,
we
synthesized
two
enantiomers
three-dimensional
(3D)
double-perovskites,
[R-3-HDMP]2CsEu(NO3)6
(1)
and
[S-3-HDMP]2CsEu(NO3)6
(2),
by
reacting
R-3-HDMP
S-3-HDMP
(where
3-HDMP
=
3-hydroxy-N,N-dimethylpyrrole)
CsNO3
Eu(NO3)3
in
a
2:1:1
ratio
within
an
acidic
solution.
Both
R-3-HDMPI
S-3-HDMPI
crystallize
space
group
P212121
at
room
temperature,
exhibiting
transition
from
SHG-on
to
SHG-off
(SHG
second
harmonic
generation)
upon
heating
cooling.
The
temperature-dependent
X-ray
single-crystal
diffraction
analysis
carried
out
on
compound
1
2,
before
after
phase
transition,
disclosed
transformation
their
groups
noncentrosymmetric
centrosymmetric.
Additionally,
incorporation
elements
as
B-site
cations
imparts
exceptional
fluorescence
compounds.
These
effectively
merge
unique
characteristics
molecules
luminescence
structures,
paving
way
for
innovative
optical
devices
advanced
information
processing
technologies.
Язык: Английский
Coordination Polymers of Vanadium and Selected Metal Ions with N,O-Donor Schiff Base Ligands—Synthesis, Crystal Structure, and Application
Molecules,
Год журнала:
2025,
Номер
30(5), С. 1104 - 1104
Опубликована: Фев. 27, 2025
This
review
provides
an
overview
of
the
synthesis,
characterization
and
application
coordination
polymers
based
on
N,O-donor
Schiff
base
ligands.
The
(CPs)
represent
a
novel
class
inorganic-organic
hybrid
materials
with
tunable
compositions
fascinating
structures.
They
are
composed
metal
ions
organic
Therefore,
nature
ion
type
ligand
is
most
significant
factor
in
constructing
targeted
desired
properties.
Due
to
versatile
modes,
ligands
also
used
construct
various
CPs.
Язык: Английский
Electrocatalytic Applications in Hydrogen Evolution of Two Nitrogen Heterocyclic Cu(I) Coordination Polymer Modified Electrodes
Applied Organometallic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 25, 2024
ABSTRACT
The
development
of
low‐cost,
high‐efficiency,
stable,
and
structurally
adjustable
electrocatalysts
for
hydrogen
evolution
reaction
(HER)
is
great
significance
energy
conversion.
In
this
study,
two
new
Cu(I)
coordination
polymers
(CPs),
formulated
as
{[Cu(L
1
)](PF
6
)·CH
2
Cl
}
n
(
)
{[Cu
(L
1.5
(PPh
3
=
1,3‐bis[1‐(pyridin‐3‐ylmethyl)
‐1H‐benzimidazol‐2‐yl]propane,
L
1,4‐bis[1‐(3‐pyridylmethyl)‐1H‐benzimidazol‐2‐yl]butane),
were
synthesized
by
interfacial
diffusion
method
characterized
single‐crystal
x‐ray
diffraction
IR
UV–Vis
spectra.
Structural
analysis
shows
that
the
CP‐
a
one‐dimensional
chain
structure,
whereas
two‐dimensional
layered
which
due
to
different
modes
ligands
(bridging
chelation)
(bridging).
electrocatalytic
activity
HER
CPs
was
studied
preparing
modified
glassy
carbon
electrodes
(CP‐
/GCE
/GCE).
Electrochemical
studies
manifest
in
0.5
M
H
SO
4
,
overpotential
η
10
298K
Tafel
slope
b
are
−769
mV
173
dec
−1
/GCE,
−933
301
−930
298
bare/GCE,
respectively.
significantly
positive
shifted
decreased
compared
with
indicating
has
significant
order
>
≈
bare/GCE.
This
work
provides
an
important
reference
application
non‐noble
metal
field
electrocatalysis.
Язык: Английский