Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 26, 2024
Abstract
Mn(II)‐based
halides
have
recently
garnered
significant
interest
as
emerging
luminescence
materials
for
diverse
photonic
applications.
Generally,
Mn(II)
hybrids
with
tetrahedral
coordination
show
green
emission,
however,
ones
octahedral
give
red
emission.
Herein,
we
design
the
synthesis
of
pseudohalide
hybrids,
(RPh
3
P)
2
MnBr
x
NCS
4−x
(R=phenyl,
pentyl
or
methyl;
Ph
P=triphenylphosphine;
=1–3),
achieved
by
gradually
substituting
bromides
pseudohalides
(NCS
−
).
Compared
to
green‐emitting
A
4
(512
nm),
mixed
exhibit
significantly
distorted
[MnBr
4−X
]
tetrahedra
high
dipole
moment,
thus
leading
distinct
Stokes
shift
energies
and
noticeable
emission
in
range
549–613
nm.
Furthermore,
photoluminescence
quantum
yield
(PLQY)
these
correlates
strongly
pair
correlation
function
ions,
specifically
Mn⋅⋅⋅Mn
distance.
These
findings
highlight
critical
role
moments
determining
properties
expand
luminescent
family
hybrids.
European Journal of Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
27(33)
Published: Oct. 29, 2024
Abstract
A
new
haloargentate
hybrid,
[Et‐dabco]₂Ag₂Br₄
(
1
)
(Et‐dabco
+
=1‐Ethyl‐1,4‐diazabicyclo[2.2.2]octan‐1‐ium),
has
been
successfully
synthesized
by
a
solution
diffusion
method
and
characterized
using
microanalysis,
single
crystal
X‐ray
diffraction,
variable‐temperature
powder
diffraction
(PXRD),
differential
scanning
calorimetry
(DSC),
dielectric
spectra.
The
structure
of
at
273
K
contains
one‐dimensional
(1D)
anionic
[Ag₂Br₄]
2−
chains,
with
the
[Et‐dabco]
cations
embedded
in
gaps
between
inorganic
chains.
Hybrid
underwent
reversible
structural
phase
transition
(SPT)
around
464.5
on
heating,
Pawley
refinement
revealed
similar
structures
low‐
high‐temperature
phases.
SPT
endows
switchable
bistable
properties.
Combined
previous
studies,
it
was
that
self‐assembly
silver
halide
(AgX)
lower
rotational
energy
barrier
1‐alkyl‐1,4‐diazabicyclo[2.2.2]octan‐1‐ium
probably
achieves
materials.
Endowing
liquid
crystal
polymers
with
chirality
and
luminescence
is
a
powerful
strategy
to
address
the
low
asymmetry
factor
(glum)
of
organic
circularly
polarized
(CPL)
films.
However,
mechanism
chiral
transfer
amplification
in
multicomponent
stacking
mode
polymers,
exogenous
molecules,
fluorescent
dyes
remains
challenge.
Here,
CPL
films
high
glum
values
were
obtained
by
controlling
modes
three
components.
Employing
axial
1,1′-bi-2-naphthol
as
dopant
allowed
for
more
efficient
induction
due
its
favorable
H-aggregation
self-assembly
additional
π–π
interactions
achiral
components,
resulting
considerable
value
0.57.
This
work
provides
insights
into
understanding
offers
flexible
approach
design
advanced
materials.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 26, 2024
Abstract
Mn(II)‐based
halides
have
recently
garnered
significant
interest
as
emerging
luminescence
materials
for
diverse
photonic
applications.
Generally,
Mn(II)
hybrids
with
tetrahedral
coordination
show
green
emission,
however,
ones
octahedral
give
red
emission.
Herein,
we
design
the
synthesis
of
pseudohalide
hybrids,
(RPh
3
P)
2
MnBr
x
NCS
4−x
(R=phenyl,
pentyl
or
methyl;
Ph
P=triphenylphosphine;
=1–3),
achieved
by
gradually
substituting
bromides
pseudohalides
(NCS
−
).
Compared
to
green‐emitting
A
4
(512
nm),
mixed
exhibit
significantly
distorted
[MnBr
4−X
]
tetrahedra
high
dipole
moment,
thus
leading
distinct
Stokes
shift
energies
and
noticeable
emission
in
range
549–613
nm.
Furthermore,
photoluminescence
quantum
yield
(PLQY)
these
correlates
strongly
pair
correlation
function
ions,
specifically
Mn⋅⋅⋅Mn
distance.
These
findings
highlight
critical
role
moments
determining
properties
expand
luminescent
family
hybrids.
