ChemistrySelect,
Journal Year:
2025,
Volume and Issue:
10(17)
Published: April 28, 2025
Abstract
Manganese
sensing
using
ligands
remains
challenging
due
to
the
stability
of
manganese
complexes
and
disproportionation
reactions
in
solvents.
Herein,
we
report
colourimetry‐based
fast
reliable
differential
Mn(II),
Mn(III),
squaramide‐ligands
with
pyridine
functionality
colourimetrically.
The
efficiency
these
is
contingent
on
disposition
nitrogen
relative
squaramide
ring
sustained
by
presence
acetate
ions.
electronic
1
H‐NMR
measurements
depict
complexation
metal
ion
ligand
molecules.
In
contrast,
electron
paramagnetic
resonance
(EPR)
suggest
that
extent
ligand‐to‐metal
charge
transfer
(LMCT)
primarily
responsible
for
Mn(II)
Mn(III)
different
colours.
also
produces
selective
chromogenic
responses
Pb(II)
limit
detection
(LOD)
ions
≈52
n
84
nM,
respectively,
where
LOD
17.9
n.
Visually,
response
below
10
µ
concentration
filter
paper
as
low
<
can
be
easily
sensed,
which
used
portable
strips
real‐life
samples.
Accounts of Chemical Research,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 18, 2024
ConspectusChemists
have
long
pursued
harnessing
light
energy
and
photoexcitation
processes
for
synthetic
transformations.
Ligand-to-metal
charge
transfer
(LMCT)
in
high-valent
metal
complexes
often
triggers
bond
homolysis,
generating
oxidized
ligand-centered
radicals
reduced
centers.
While
photoinduced
oxidative
activations
can
be
enabled,
this
process,
typically
seen
as
photochemical
decomposition,
remains
underexplored
catalytic
applications.
To
mitigate
decomposition
during
LMCT
excitation,
we
developed
a
cycle
integrating
situ
coordination,
LMCT,
ligand
homolysis
to
activate
ligated
alcohols
transiently
into
alkoxy
radicals.
This
approach
leverages
Ce(IV)
excitation
highly
reactive
radical
intermediates
selective
functionalizations
of
C(sp
Chemical Communications,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Extended
ligand
conjugation
enhances
luminescent
thermometry
in
dinuclear
Dy-SMMs,
improving
thermometric
properties
and
enabling
rare
direct
energy
transfer
from
the
ligands'
singlet
state
to
Dy(
iii
),
as
shown
by
excited-state
lifetime.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 28, 2025
Iron
is
the
most
abundant
transition
metal
element
and
would
be
ideal
replacement
for
noble
metals
in
many
applications
that
rely
on
luminescent
long-lived
electronically
excited
states.
We
show
efficient
reversible
energy
transfer
between
doublet
states
of
iron
complexes
triplet
organic
ligands
improves
storage
by
up
to
350-fold.
As
a
result,
luminescence
lifetimes
100
ns
are
achieved,
upconversion
from
red
blue
light
becomes
68
times
more
yield
benchmark
photoredox
reactions
significantly
improved.
These
advances
make
coordination
compounds
promising
candidates
lighting,
solar
conversion
photocatalysis.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(17), P. 12757 - 12768
Published: Aug. 9, 2024
The
use
of
alcohol
feedstock
as
a
coupling
partner
in
cross-coupling
reactions
offers
an
extraordinary
potential
for
the
efficient
synthesis
Csp3-rich
complex
molecular
scaffolds.
This
prominent
strategy
relies
on
generation
alkoxy
radicals,
which
can
react
via
various
radical
pathways
to
give
carbon-centered
radicals
that
be
engaged
C–C
bond
formation
reactions.
However,
involving
catalytic
directly
from
native
alcohols
are
highly
challenging
and
scope
existing
methods
remains
particularly
limited.
Moreover,
unified
incorporate
broad
range
with
aryl
halides
is
currently
unavailable.
Herein,
we
report
general
photocatalytic
platform
combines
nickel
iron
ligand-to-metal
charge
transfer
(LMCT)
catalysis
selective
deconstructive
Csp3–Csp3
cleavage
arylation
unactivated
alcohols.
protocol
leverages
ability
photoinduced
LMCT
generate
diversely
substituted
alcohols,
enabling
implementation
bond-forming
manifolds.
These
include
dehydroxymethylative
aliphatic
remote
cyclic
yield
alkyl
ketones,
methylation
using
tertiary
methyl
source.
methodology
practical
engaging
large
variety
commercially
available
under
mild
conditions,
abundant
catalysts.
Mechanistic
studies,
including
stoichiometric
organometallic
chemistry
voltammetry,
provide
insights
into
crucial
role
ancillary
ligand
surrounding
catalyst
stabilizing
both
low-
high-valent
intermediates.
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
A
photoinduced
iron-catalyzed
fluoroalkylation-peroxidation
of
activated
and/or
unactivated
alkenes
with
fluoroalkyl
carboxylic
acids
and
hydroperoxide
has
been
realized.
Applied Physics Reviews,
Journal Year:
2025,
Volume and Issue:
12(1)
Published: Jan. 24, 2025
High-performing
semiconductor
thin
films
are
crucial
components
in
today's
electronic
age,
finding
extensive
applications
devices
and
chips.
Recently,
there
has
been
a
significant
trend
toward
incorporating
lanthanide
elements
into
these
films,
primarily
driven
by
the
escalating
demand
for
photonic
optoelectronic
applications.
The
featured
article
presents
detailed
overview
of
latest
research
advancements
lanthanide-doped
tailored
uses.
This
comprehensive
review
encompasses
principles,
design
considerations,
fabrication
methods,
characterization
techniques
involved
creating
doped
films.
semiconductors
discuss
span
range
materials,
including
wide
bandgap
semiconductors,
perovskites,
two-dimensional
piezoelectric
organic
materials.
further
explores
Finally,
it
delves
current
challenges,
potential
solutions,
future
prospects,
gaps
that
need
to
be
addressed
this
exciting
field.
