Dalton Transactions,
Год журнала:
2023,
Номер
52(47), С. 17758 - 17766
Опубликована: Янв. 1, 2023
By
introducing
enantiomerically
pure
mono-bidentate
N-donor
ligands
(LR/LS)
into
Yb(btfa)3(H2O)2
and
Yb(dbm)3(H2O),
respectively,
two
pairs
of
chiral
YbIII
enantiomers,
namely
Yb(btfa)3LR/Yb(btfa)3LS
(D-1/L-1)
[Yb(dbm)3LR]·[Yb(dbm)3(C2H5OH)]/[Yb(dbm)3LS]·[Yb(dbm)3(C2H5OH)]
(D-2/L-2)
were
isolated,
where
btfa-
=
3-benzoyl-1,1,1-trifluoroacetonate,
dbm-
dibenzoylmethanate,
LR/LS
(-)/(+)-4,5-pinenepyridyl-2-pyrazine.
D-1/L-1
possess
mononuclear
structures
in
which
the
ions
are
eight-coordinated,
while
D-2/L-2
show
cocrystal
containing
Yb(dbm)3(LR/LS)
Yb(dbm)3(C2H5OH)
moieties
eight
seven-coordinated,
respectively.
They
not
only
feature
different
molecular
but
also
present
distinct
linear
nonlinear
optical
performances.
Chiral
D-1
has
better
near
infrared
photo-luminescence
(NIR-PL)
circularly
polarized
luminescence
(CPL)
performances
than
D-2.
More
remarkably,
large
second-harmonic
generation
(SHG)
responses
(up
to
1.25/1.28
×
KDP)
18/16
times
those
(0.07/0.08
KDP).
In
addition,
represent
first
examples
lanthanide
complexes
with
NIR-PL,
NIR-CPL
SHG
properties.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(25)
Опубликована: Март 22, 2023
Abstract
In
recent
years,
circularly
polarized
luminescence
(CPL)
has
witnessed
a
renaissance,
due
to
the
increased
popularity
of
CPL
as
spectroscopic
technique
and
greater
accessibility
instrumentation.
New
efficient
emitters
have
been
designed
many
applications,
ranging
from
electronic
devices
microscopy
proposed.
Most
examples
are
within
visible
range,
while
few
cases
near
infrared
(NIR)
active
complexes
available.
NIR‐CPL
compounds
may
applications
in
telecommunication
industry,
bioassays.
following,
we
shall
give
an
overview
developments
allowing
for
measurements
NIR‐CPL,
describe
chiroptical
properties
metal
which
achieve
this
feat.
Angewandte Chemie International Edition,
Год журнала:
2022,
Номер
62(5)
Опубликована: Ноя. 30, 2022
The
combination
of
physical
properties
sensitive
to
molecular
chirality
in
a
single
system
allows
the
observation
fascinating
phenomena
such
as
magneto-chiral
dichroism
(MChD)
and
circularly
polarized
luminescence
(CPL)
having
potential
applications
for
optical
data
readout
display
technology.
Homochiral
monodimensional
coordination
polymers
Yb
Chemical Communications,
Год журнала:
2023,
Номер
59(40), С. 5961 - 5986
Опубликована: Янв. 1, 2023
Multifunctional
materials,
which
exhibit
diverse
physical
properties,
are
candidates
for
the
new
generation
of
smart
devices
that
realize
many
tasks
simultaneously.
Particular
attention
is
given
to
single-phase
multifunctional
materials
offer
effects
induced
by
coupling
between
introduced
properties.
Complexes
lanthanide(3+)
ions
an
attractive
source
multifunctionality
since
they
combine
luminescent
functionalities
related
their
f-f
or
d-f
electronic
transitions
with
magnetic
anisotropy
originates
from
spin-orbit
and
crystal-field
effects.
The
resulting
single-molecule
magnets
(SMMs)
link
area
functional
luminophores,
applicable
in
light-emitting
diodes
sensing,
field
molecular
magnets,
high-density
data
storage,
additional
advantages,
e.g.,
fruitful
magneto-optical
correlations
switching
emission
a
field.
It
was
recently
shown
lanthanide
SMMs
can
provide
richly
expanded
towards
sensitivity
solvent
exchange,
temperature,
light,
as
well
electrical
such
super-ionic
conductivity
ferroelectricity,
non-centrosymmetricity-
chirality-related
effects,
second-harmonic
circularly
polarized
luminescence.
Here,
we
discuss
pioneering
reports
on
use
SMMs,
emphasis
our
contribution
relying
functionalization
4f
metal
complexes
through
insertion
into
heterometallic
coordination
compounds.
Molecules,
Год журнала:
2024,
Номер
29(3), С. 688 - 688
Опубликована: Фев. 1, 2024
Rare
earths,
scandium,
yttrium,
and
the
fifteen
lanthanoids
from
lanthanum
to
lutetium,
are
classified
as
critical
metals
because
of
their
ubiquity
in
daily
life.
They
present
magnets
cars,
especially
electric
cars;
green
electricity
generating
systems
computers;
steel
manufacturing;
glass
light
emission
materials
for
safety
lighting
lasers;
exhaust
catalysts
supports;
artificial
rubber
production;
agriculture
animal
husbandry;
health
cancer
diagnosis
treatment;
a
variety
electronic
products
essential
modern
living.
have
potential
replace
toxic
chromates
corrosion
inhibition,
magnetic
refrigeration,
new
materials,
role
may
expand.
This
review
examines
sustainability,
environment,
recycling,
crop
production,
feedstocks,
catalysis,
health,
well
considering
future
uses.
Inorganic Chemistry,
Год журнала:
2023,
Номер
62(23), С. 8812 - 8822
Опубликована: Июнь 1, 2023
The
complexes
[Eu(bpcd)(tta)],
[Eu(bpcd)(Coum)],
and
[Tb(bpcd)(Coum)]
[tta
=
2-thenoyltrifluoroacetyl-acetonate,
Coum
3-acetyl-4-hydroxy-coumarin,
bpcd
N,N'-bis(2-pyridylmethyl)-trans-1,2-diaminocyclohexane-N,N'-diacetate]
have
been
synthesized
characterized
from
photophysical
thermodynamic
points
of
view.
optical
chiroptical
properties
these
complexes,
such
as
the
total
luminescence,
decay
curves
Ln(III)
electronic
circular
dichroism,
circularly
polarized
investigated.
Interestingly,
number
coordinated
solvent
(methanol)
molecules
is
sensitive
to
nature
metal
ion.
This
number,
estimated
by
spectroscopy,
>1
for
Eu(III)-based
<1
Tb(III)-based
complexes.
A
possible
explanation
this
behavior
provided
via
study
minimum
energy
structure
obtained
density
functional
theory
(DFT)
calculations
on
model
diamagnetic
Y(III)
La(III)
counterparts
[Y(bpcd)(tta)],
[Y(bpcd)(Coum)],
[La(bpcd)(Coum)].
By
time-dependent
DFT
calculations,
estimation
donor-acceptor
(D-A)
distances
position
S1
T1
ligand
excited
states
involved
in
antenna
effect
was
possible.
These
data
are
useful
rationalizing
different
sensitization
efficiencies
(ηsens)
antennae
toward
Eu(III)
Tb(III).
tta
an
optimal
sensitizing
while
sensitizes
better
Tb(III)
luminescence
{ϕovl
55%;
ηsens
≥
55%
complex}.
Finally,
[Eu(bpcd)(tta)]
complex,
a
sizable
value
glum
(0.26)
good
quantum
yield
(26%)
were
measured.
Dalton Transactions,
Год журнала:
2023,
Номер
52(15), С. 4643 - 4657
Опубликована: Янв. 1, 2023
We
review
the
recent
research
progress
of
multifunctional
lanthanide-based
single-molecule
magnets
exhibiting
luminescence
thermometry
and
photochromic
ferroelectric
properties,
as
well
synergistic
effect
between
them.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(50)
Опубликована: Окт. 30, 2023
The
helical
twisting
tendency
of
liquid
crystals
(LCs)
is
generally
governed
by
the
inherent
configuration
chiral
emitter.
Here,
we
introduce
multistage
inversion
supramolecular
chirality
as
well
circularly
polarized
luminescence
(CPL)
manipulating
ratio
single
enantiomeric
emitters
(R-PCP)
to
LC
monomers
(5CB).
Increasing
content
R-PCP
from
1
wt
%
3
inverted
helix
LCs
left-handed
right-handed,
accompanying
a
CPL
sign
changed
positive
negative.
biaxiality
emitters,
steric
effect
chiral-chiral
and
chiral-achiral
interaction,
were
identified
reasons
for
sense
inversion.
Due
strong
power,
4
drove
photonic
band
gap
(PBG)
match
up
with
their
emission
range,
leading
an
again
high
dissymmetry
factor
(≈1.2).
Directly
adjusting
PBG
using
seldom
achieved
in
cholesteric
LCs.
On
this
basis,
achiral
sensitizer
PtTPBP
was
assembled
into
superstructure.
generation
triplet-triplet
annihilation-induced
upconverted
downshifting
opposite
rotation
system
tuning
position
PBG.
