Angewandte Chemie,
Год журнала:
2024,
Номер
136(44)
Опубликована: Июль 10, 2024
Abstract
Anisotropy
is
crucial
for
birefringence
(Δ
n
)
in
optical
materials,
but
optimizing
it
remains
a
formidable
challenge
>0.3).
Supramolecular
frameworks
incorporating
π‐conjugated
components
are
promising
achieving
enhanced
because
of
their
structural
diversity
and
inherent
anisotropy.
Herein,
we
first
synthesized
(C
6
H
NO
2
+
Cl
−
(
NAC
then
constructed
halogen‐bonded
supramolecular
framework
I
4
INA
by
halogen
aliovalent
substitution
with
.
The
organic
moieties
protonated
deprotonated
nicotinic
acid
NA
),
respectively.
antiparallel
arrangement
birefringent‐active
units
leads
to
significant
differences
the
bonding
characteristics
between
interlayer
intralayer
domains.
Moreover,
[O⋅⋅⋅I
⋅⋅⋅N]
bond
1D
[I
]
chain
exhibits
stronger
interactions
stricter
directionality,
resulting
more
pronounced
in‐plane
anisotropy
intrachain
interchain
directions.
Consequently,
exceptional
birefringent
performance,
value
0.778
at
550
nm,
twice
that
(0.363
nm).
This
significantly
exceeds
those
commercial
crystals,
such
as
CaCO
3
(0.172
546
nm),
highest
reported
among
ultraviolet
crystals.
work
presents
novel
design
strategy
employs
bonds
connection
sites
modes
units,
opening
new
avenues
developing
high‐performance
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 21, 2025
Enhancing
the
optical
anisotropy
of
compounds
has
attracted
significant
interest
in
field.
Sn-centered
crystals,
containing
stereochemically
active
lone
pairs,
are
widely
regarded
as
promising
birefringent
materials.
In
this
study,
we
successfully
synthesized
two
novel
mixed
halide
NaSn2F4Br
and
Na2Sn2F5I.
These
composed
polyhedra,
exhibit
more
than
a
2-fold
increase
birefringence
from
to
Among
all
known
halides,
Na2Sn2F5I
crystal
demonstrates
highest
(Δn
=
0.408@546
nm).
Theoretical
calculations
indicate
that
exceptional
properties
arise
large
polarization
induced
by
Sn-I
bond
within
polyhedra.
findings
provide
valuable
insights
for
development
high-quality
materials
systems.
Inorganic Chemistry,
Год журнала:
2024,
Номер
63(13), С. 6067 - 6074
Опубликована: Март 15, 2024
The
first
examples
of
alkali
metal
selenite
sulfates,
namely,
Na8(SeO3)(SO4)3
(1),
Na2(H2SeO3)(SO4)
(2),
and
K4(H2SeO3)(HSO4)2(SO4)
(3),
were
successfully
synthesized
by
hydrothermal
reactions.
Their
structures
display
three
different
zero-dimensional
configurations
composed
isolated
sulfate
tetrahedra
groups
separated
metals.
(1)
features
a
noncentrosymmetric
structure,
while
(2)
(3)
are
centrosymmetric.
Powder
second-harmonic-generation
measurements
revealed
that
shows
phase-matchable
SHG
intensity
about
1.2
times
KDP.
UV–vis–NIR
diffuse
reflectance
spectroscopic
analysis
indicated
has
short
UV
cutoff
edge
large
optical
band
gap,
which
makes
it
possible
nonlinear
material.
Theoretical
calculations
the
birefringence
is
0.041
at
532
nm,
suitable
for
phase-matching
condition.
This
work
provides
good
experimental
foundation
exploration
new
crystals
in
an
system.
Dalton Transactions,
Год журнала:
2024,
Номер
53(17), С. 7315 - 7320
Опубликована: Янв. 1, 2024
A
pair
of
1D
Cu(
i
)-based
chiral
organic–inorganic
hybrid
materials
with
good
nonlinear
optics,
birefringence
and
red
circular
polarized
luminescence
have
been
synthesized.
Journal of Materials Chemistry C,
Год журнала:
2024,
Номер
12(20), С. 7286 - 7294
Опубликована: Янв. 1, 2024
Two
new
vanadium
oxyfluoride–iodate
birefringent
materials,
Sr[VO
2
F(IO
3
)
]
and
Sr
F
(VO
4
)(IO
),
have
been
successfully
synthesized.
These
two
compounds
exhibit
high
birefringences
with
values
of
0.250
0.406
at
550
nm,
respectively.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(44)
Опубликована: Июль 10, 2024
Abstract
Anisotropy
is
crucial
for
birefringence
(Δ
n
)
in
optical
materials,
but
optimizing
it
remains
a
formidable
challenge
>0.3).
Supramolecular
frameworks
incorporating
π‐conjugated
components
are
promising
achieving
enhanced
because
of
their
structural
diversity
and
inherent
anisotropy.
Herein,
we
first
synthesized
(C
6
H
NO
2
+
Cl
−
(
NAC
then
constructed
halogen‐bonded
supramolecular
framework
I
4
INA
by
halogen
aliovalent
substitution
with
.
The
organic
moieties
protonated
deprotonated
nicotinic
acid
NA
),
respectively.
antiparallel
arrangement
birefringent‐active
units
leads
to
significant
differences
the
bonding
characteristics
between
interlayer
intralayer
domains.
Moreover,
[O⋅⋅⋅I
⋅⋅⋅N]
bond
1D
[I
]
chain
exhibits
stronger
interactions
stricter
directionality,
resulting
more
pronounced
in‐plane
anisotropy
intrachain
interchain
directions.
Consequently,
exceptional
birefringent
performance,
value
0.778
at
550
nm,
twice
that
(0.363
nm).
This
significantly
exceeds
those
commercial
crystals,
such
as
CaCO
3
(0.172
546
nm),
highest
reported
among
ultraviolet
crystals.
work
presents
novel
design
strategy
employs
bonds
connection
sites
modes
units,
opening
new
avenues
developing
high‐performance
