Zeitschrift für anorganische und allgemeine Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 9, 2024
Abstract
Metal‐free
ionic
crystals
have
attracted
tremendous
attention
for
their
environmental
friendliness,
biocompatibility,
easy
fabrication
and
structural
variability.
Herein,
a
metal‐free
crystal
[C
7
H
16
NO][ClO
4
]
([C
NO]=1‐methyl‐4‐piperidinemethanol)
with
dielectric
transition
at
room
temperature
was
designed
constructed.
Differential
scanning
calorimetry
(DSC)
proved
that
there
exists
reversible
phase
near
304
K,
accompanied
switchable
behaviors
between
the
low
high
states.
The
single
structure
show
mechanism
of
such
mainly
results
from
dynamic
motion
perchlorate
anions.
compound
is
further
shown
to
exhibit
remarkable
luminescent
properties,
characterized
by
prolonged
lifetime
18.6
ns.
This
work
offers
valuable
insights
into
construction
phase‐transition
involved
switching
blue
luminescence
properties.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(38), P. 26081 - 26094
Published: Sept. 16, 2024
The
heteroanionic
materials
(HAMs)
have
attracted
more
and
attention
because
they
can
better
balance
the
functional
properties
of
materials.
However,
their
rational
structural
design
is
still
a
great
challenge.
Here,
by
using
antiperovskite
Ba
Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 5, 2025
Integrated
multichannel
response
switches,
characterized
by
their
simple
and
compact
structure,
have
a
wide
range
of
applications
in
the
fields
smart
temperature
sensors,
communication
devices.
Starting
from
N,N-dimethylpropan-2-amine,
this
paper
reports
on
three
new
perovskite
materials
introducing
groups
-OH
-OMe
through
chemical
design.
All
materials,
namely,
(DMIPA)PbBr3,
(DMIPA-OH)PbBr3,
(DMIPA-OMe)PbBr3,
possess
both
enthalpic
dielectric
switching
characteristics,
with
(DMIPA)PbBr3
(DMIPA-OH)PbBr3
also
exhibiting
second-harmonic-generation
effects,
achieving
three-channel
responses.
Moreover,
crystal
structure
analyses
revealed
that
phase
transitions
are
caused
ordered-disordered
motion
cations.
In
addition,
study
has
explored
intrinsic
semiconductor
properties
structures,
optical
band
gaps
being
3.305
eV
for
3.233
3.179
(DMIPA-OMe)PbBr3.
It
is
believed
work
will
provide
reference
design
synthesis
integrated
switches.
Inorganic Chemistry,
Journal Year:
2023,
Volume and Issue:
62(46), P. 19115 - 19122
Published: Nov. 9, 2023
Hybrid
organic-inorganic
perovskites
with
structural
transformation
have
garnered
continued
interest
in
recent
years
for
their
potential
as
multifunctional
materials
the
field
of
optoelectronics
and
smart
devices.
Herein,
we
report
a
novel
hybrid
halide,
[C5NOH12]2[Cd1.5Cl5(H2O)]
(1).
Remarkably,
centrosymmetric
compound
1
undergoes
to
noncentrosymmetric
perovskite
[C5NOH12][CdCl3]
(2)
after
dehydration.
Accompanied
by
chemical
bond
cleavage
reorganization,
zero-dimensional
(0D)
trinuclear
cluster
transforms
into
an
intriguing
one-dimensional
(1D)
hexagonal
structure
2,
generating
multiple
optoelectronic
switching
behaviors.
It
is
worth
mentioning
that
2
demonstrates
successive
phase
transitions
at
353
405
K,
resulting
switchable
second
harmonic
generation
(SHG)
dual
dielectric
response.
In
addition,
compounds
both
feature
blue-light
luminescence,
respective
photoluminescence
lifetimes
0.73
1.42
ns.
This
work
will
offer
pioneering
approach
expansive
preparation
development
superior
properties.
Inorganic Chemistry,
Journal Year:
2023,
Volume and Issue:
62(43), P. 17985 - 17992
Published: Oct. 16, 2023
Chirality
is
a
fascinating
geometrical
concept
with
widespread
applications
in
biology,
chemistry,
and
materials.
Incorporating
chirality
into
hybrid
perovskite
materials
can
induce
novel
physical
properties
(chiral
optical
activity,
nonlinear
optics,
etc.).
Hybrid
lead-free
or
lead-substituted
materials,
as
representatives
of
perovskites,
have
been
widely
used
fields
such
photovoltaics,
sensors,
catalysis,
detectors.
However,
the
successful
introduction
which
enable
their
potential
areas
circularly
polarized
light
photodetectors,
memories,
spin
transistors,
remains
challenging
research
topic.
Here,
we
synthesized
two
new
chiral
[(R)-2-methylpiperazine][BiI5]
[(S)-2-methylpiperazine][BiI5].
The
material
possesses
structure
one-dimensional
(1D)
arrangement,
denoted
ABX5.
This
composed
cations,
specifically
methylpiperazine,
endless
chains
[BiI3]
along
a-axis.
These
are
assembled
from
distorted
coplanar
[BiI5]2–
octahedra.
testing
results
revealed
that
(R)-1
(S)-1
narrow
band
gaps
(Eg-R
=
2.016
eV,
Eg-S
1.964
eV),
high
photoelectric
response,
long
carrier
lifetime
[R
4.94
μs
(τ),
S
7.85
(τ)].
It
worth
noting
1D
perovskites
(S)-1,
this
study
gaps,
lifetime,
to
serve
alternative
for
layer
future
iterations
solar
cells.
Moreover,
will
inspire
preparation
multifunctional,
perovskites.
ChemistrySelect,
Journal Year:
2024,
Volume and Issue:
9(1)
Published: Jan. 4, 2024
Abstract
Host‐guest
inclusion
materials
serve
as
an
ideal
model
for
designing
phase
transition
materials.
The
typical
host
molecule,
18‐crown‐6
(1,
4,
7,
10,
13,
16‐hexaoxacyclo‐octadecane),
is
known
its
strong
coordination
with
amino
compounds
through
N−H⋅⋅⋅O
hydrogen‐bonding
interactions,
attracting
the
attention
of
numerous
scientific
researchers.
This
study
presented
successful
synthesis
and
characterization
two
host‐guest
materials,
[(trans‐4‐aminocyclohexanol)(18‐crown‐6)][ClO
4
]
(
1
)
[(trans‐4‐aminocyclohexanol)(18‐crown‐6)][BF
2
).
Both
underwent
reversible
changes
at
temperatures
312
K/305
K
322
K/314
K,
respectively.
In
this
article,
crystal
structures,
thermal
properties,
optical
properties
analyses
intermolecular
interactions
were
discussed
in
details.
Our
endeavors
are
believed
to
have
made
a
contribution
advancement
change
