Separation and Purification Reviews,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 20
Published: Dec. 6, 2024
Rare
earth
elements
(REEs)
like
lanthanum
(La),
cerium
(Ce),
thulium
(Th),
and
yttrium
(Y)
are
crucial
in
high-tech
consumer
products
medical
applications,
including
anti-tumor
agents,
dialysis
medicines,
surgical
tools.
The
rare
industry
growth
has
spiked
demand
for
high-purity
REEs,
making
efficient
separation
essential.
Since
REEs
typically
exist
low
natural
concentrations,
precise
analysis
methods
required.
One
promising
approach
is
Ionic
Imprinted
Polymers
(IIPs),
derived
from
Molecularly
(MIPs),
which
can
selectively
recognize
separate
specific
ions.
IIPs
offer
considerable
advantages
extracting,
detecting,
quantifying
REEs.
This
review
examines
recent
progress
ion
imprinting
technology
REE
separation,
focusing
on
studies
published
the
past
2007–2024
years.
It
begins
with
an
overview
of
methods,
their
physical
chemical
properties,
role
nanomaterials,
IIP
components.
Following
this,
applications
contamination
management,
along
related
uses
actinide
discussed.
Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 5, 2025
Multicolor
luminescent
materials
hold
great
potential
in
high-level
optical
anticounterfeiting
and
encryption
technologies.
However,
achieving
multiple
luminescence
a
single
phosphor
with
dopant,
especially
covering
visible
invisible
regions
simultaneously,
remains
standing
challenge.
Herein,
we
successfully
realize
dual-band
emission
single-doped
γ-AlON:Mn2+
phosphors.
Under
450
nm
light
excitation,
the
low-doped
γ-AlON:xMn2+
phosphors
(x
≤
0.02)
emit
narrowband
green
at
515
nm;
however,
when
further
increasing
Mn2+
concentration,
heavy-doped
≥
0.05)
samples
display
an
additional
broad
near-infrared
band
peaking
730
nm.
Such
intriguing
spanning
from
to
regimes
is
assigned
combined
emissions
of
isolated
tetrahedral
ions
superexchange-coupled
Mn2+-Mn2+
pairs
γ-AlON
host.
Exploiting
distinct
photoluminescence
low-
high-doped
phosphors,
double-level
information
demonstration.
This
work
first
presents
dual-emission
not
only
enabling
but
also
shedding
on
tuning
inorganic
physica status solidi (RRL) - Rapid Research Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 26, 2025
Counterfeiting
is
a
global
issue
with
severe
economic,
security,
and
health
impacts,
requiring
advanced
anti‐counterfeiting
solutions.
Luminescent
materials
offer
unique,
hard‐to‐replicate
identification
features.
To
this
purpose,
Y
2
GeO
5
LiYGeO
4
samples
doped
0.5
mol%
of
bismuth
(Bi)
are
synthesized
by
solid‐state
reaction.
X‐ray
diffraction
Raman
spectroscopy
revealed
their
polyphasic
nature,
the
mainly
consisting
desired
crystalline
phases.
Photoluminescence
measurements
indicated
that
all
exhibit
strong
emission
band
in
ultraviolet
A
spectral
region
(355–365
nm),
attributed
to
Bi
3+
intraionic
transitions.
Despite
similarities,
lifetime
under
300
nm
excitation
sample
had
nearly
100
times
longer
than
sample.
Furthermore,
afterglow
decay
profiles
demonstrated
persistent
luminescence
(PersL)
only
observed
sample,
detectable
for
over
7
h
after
10
min
stimulation
250
light.
Longer
wavelengths
failed
induce
PersL.
This
finding
highlights
importance
host
material
its
associated
defects
as
trap
centres
contribute
By
combining
these
materials,
multi‐level
codes
can
be
designed
based
on
differences
lifetime,
PersL,
energy,
making
them
extremely
difficult
replicate
without
specific
knowledge
involved.
Advanced Optical Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 5, 2024
Abstract
The
fight
against
counterfeiting
is
a
crucial
concern
for
economies
around
the
world,
underscoring
urgent
need
effective
measures
to
ensure
legitimacy
of
products
and
documents.
Luminescent
security
inks
have
emerged
as
tools
in
this
battle.
third
generation
these
inks,
incorporating
stimuli‐responsive
organic
materials,
enables
unique
efficiency.
In
work,
behavior
three
trialkylated
triazatruxene
dimers
(
TRI1
,
TRI2
TRI3)
endowed
with
N
‐alkyl
chains
different
length
investigated.
Among
them,
TRI3
flexible
dodecyl
chains,
shows
remarkable
fluorescence
that
attributed
thermally
or
shear‐induced
phase
transitions
between
tetragonal
columnar
discotic‐nematic
liquid
crystal
phase.
Such
transformation
involves
breakdown
highly
emissive
J‐aggregates
strong
influence
on
resulting
color.
Interestingly,
stimuli‐triggered
transformations
are
spontaneously
reversed,
which
renders
compound
very
interesting
search
third‐generation
inks.
