The Journal of Physical Chemistry Letters,
Journal Year:
2024,
Volume and Issue:
15(28), P. 7111 - 7117
Published: July 2, 2024
Quantum
chemistry
simulations
offer
a
cost-effective
way
to
computationally
design
BODIPY
photosensitizers.
However,
accurate
predictions
of
excitation
energies
pose
challenge
for
time-dependent
density
functional
theory
and
equation-of-motion
coupled-cluster
singles
doubles
methods.
By
contrast,
reliable
can
be
achieved
by
multireference
quantum
methods;
unfortunately,
their
computational
cost
increases
exponentially
with
the
number
electrons.
Alternatively,
computing
holds
potential
an
exact
simulation
photophysical
properties
in
more
efficient
way.
Herein,
we
introduce
state-specific
ΔUCCSD-VQE
(unitary
doubles-variational
eigensolver)
ΔADAPT-VQE
methods
which
electronically
excited
state
is
calculated
via
non-Aufbau
configuration.
We
show
six
derivatives
that
proposed
predict
are
good
agreement
those
from
experiments.
Due
its
performance
simplicity,
believe
ΔADAPT
will
become
useful
approach
photosensitizers
on
near-term
devices.
JACS Au,
Journal Year:
2024,
Volume and Issue:
4(8), P. 2746 - 2766
Published: Aug. 8, 2024
Photocatalysis
is
a
versatile
and
rapidly
developing
field
with
applications
spanning
artificial
photosynthesis,
photo-biocatalysis,
photoredox
catalysis
in
solution
or
supramolecular
structures,
utilization
of
abundant
metals
organocatalysts,
sustainable
synthesis,
plastic
degradation.
In
this
Perspective,
we
summarize
conclusions
from
an
interdisciplinary
workshop
young
principal
investigators
held
at
the
Lorentz
Center
Leiden
March
2023.
We
explore
how
diverse
fields
within
photocatalysis
can
benefit
one
another.
delve
into
intricate
interplay
between
these
subdisciplines,
by
highlighting
unique
challenges
opportunities
presented
each
multidisciplinary
approach
drive
innovation
lead
to
solutions
for
future.
Advanced
collaboration
knowledge
exchange
across
domains
further
enhance
potential
photocatalysis.
Artificial
photosynthesis
has
become
promising
technology
solar
fuel
generation,
instance,
via
water
splitting
CO
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(37), P. 25799 - 25812
Published: Sept. 3, 2024
Photocatalysis
holds
great
promise
for
changing
the
way
value-added
molecules
are
currently
prepared.
However,
many
photocatalytic
reactions
suffer
from
quantum
yields
well
below
10%,
hampering
transition
lab-scale
to
large-scale
or
even
industrial
applications.
Molecular
dyads
can
be
designed
such
that
beneficial
properties
of
inorganic
and
organic
chromophores
combined,
resulting
in
milder
reaction
conditions
improved
reactions.
We
have
developed
a
novel
approach
obtaining
advantages
molecular
without
time-
resource-consuming
synthesis
these
tailored
photocatalysts.
Simply
by
mixing
cationic
ruthenium
complex
with
an
anionic
pyrene
derivative
water
salt
bichromophore
is
produced
owing
electrostatic
interactions.
The
long-lived
triplet
state
obtained
static
quantitative
energy
transfer
preorganized
complex.
exploited
this
so-called
Coulombic
dyad
catalysis
similar
reactivity
higher
photostability
compared
reference
photosensitizers
several
photooxygenations.
In
addition,
it
was
shown
system
also
used
maximize
yield
photoredox
This
due
intrinsically
cage
escape
after
photoinduced
electron
purely
compounds
heavy
atom-containing
molecules.
combination
laboratory-scale
as
mechanistic
irradiation
experiments
detailed
spectroscopic
investigations
provided
deep
insights
into
easy-to-use
photocatalyst
class.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 10, 2024
Substituting
precious
elements
in
luminophores
and
photocatalysts
by
abundant
first-row
transition
metals
remains
a
significant
challenge,
iron
continues
to
be
particularly
attractive
owing
its
high
natural
abundance
low
cost.
Most
complexes
known
date
face
severe
limitations
due
undesirably
efficient
deactivation
of
luminescent
photoredox-active
excited
states.
Two
new
iron(III)
with
structurally
simple
chelate
ligands
enable
straightforward
tuning
ground
state
properties,
contrasting
recent
examples,
which
chemical
modification
had
minor
impact.
Crude
samples
feature
two
luminescence
bands
strongly
reminiscent
complex,
this
observation
was
attributed
dual
luminescence,
but
our
case,
there
is
clear-cut
evidence
that
the
higher-energy
stems
from
an
impurity
only
red
photoluminescence
doublet
ligand-to-metal
charge
transfer
(2LMCT)
genuine.
Photoinduced
oxidative
reductive
electron
reactions
methyl
viologen
10-methylphenothiazine
occur
nearly
diffusion-limited
kinetics.
Photocatalytic
not
previously
reported
for
compound
class,
particular
C–H
arylation
diazonium
salts
aerobic
hydroxylation
boronic
acids,
were
achieved
low-energy
light
excitation.
Doublet–triplet
energy
(DTET)
2LMCT
anthracene
annihilator
permits
proof
principle
triplet–triplet
annihilation
upconversion
based
on
molecular
photosensitizer.
These
findings
are
relevant
development
featuring
photophysical
photochemical
properties
competitive
noble-metal-based
compounds.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 23, 2025
Iridium
is
used
in
commercial
light-emitting
devices
and
photocatalysis
but
among
the
rarest
stable
chemical
elements.
Therefore,
replacing
iridium(III)
photoactive
molecular
complexes
with
abundant
metals
of
great
interest.
First-row
transition
generally
tend
to
yield
poorer
luminescence
behavior,
it
remains
difficult
obtain
excited
states
redox
properties
that
exceed
those
noble-metal-based
photocatalysts.
Here,
we
overcome
these
challenges
a
nonprecious
second-row
metal.
Tailored
coordination
spheres
for
molybdenum(0)
lead
photoluminescence
quantum
yields
rival
photochemical
reduction
reactions
not
normally
achievable
become
possible.
These
developments
open
new
perspectives
noble
lighting
applications
Earth-abundant
advancing
metal-based
beyond
current
limits.
Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 9, 2025
Pendant
organic
chromophores
have
been
used
to
improve
the
photocatalytic
performance
of
many
metal-based
photosensitizers,
particularly
in
first-row
metals,
by
increasing
π
conjugation
ligands
and
lowering
energy
photoactive
absorption
band.
Using
a
combination
spectroscopic
studies
computational
modeling,
we
rationalize
excited
state
dynamics
Co(III)
complex
containing
pendant
pyrene
moieties,
CoL1,
where
L1
=
1,1′-(4-(pyren-1-yl)pyridine-2,6-diyl)bis(3-methyl-1H-imidazol-3-ium).
CoL1
displays
higher
visible
absorptivity,
blue
luminescence
from
singlet
states
compared
with
CoL0
[L0
1,1′-(pyridine-2,6-diyl)bis(3-methyl-1H-imidazol-3-ium)]
which
moiety
is
absent.
Emissive
properties
are
highly
influenced
metal
center,
reducing
fluorescence
lifetime
5.9
3.5
ns,
shift
43
nm.
The
lower
d
orbitals
Fe(II)
drastically
affects
character
state,
resulting
mixture
intraligand
charge-transfer
(1ILCT)
ligand-to-metal
(1LMCT)
character.
Transient
experiments
revealed
that
although
dark
triplet
(3ILPyrene)
present,
it
not
efficiently
populated
possesses
short
nanosecond-scale
lifetime.
Instead,
metal-centered
(3MC)
dominate
decay
path
2.4
ps
lifetime,
no
photoactivity
toward
oxygen
formation
or
triplet–triplet
transfer
(TTET).
This
work
shows
how
various
factors
can
influence
excited-state
dynamics.
Angewandte Chemie International Edition,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 13, 2025
Abstract
Photoactivatable
metal
complexes
offer
the
prospect
of
novel
drugs
with
low
side
effects
and
new
mechanisms
action
to
combat
resistance
current
therapy.
We
highlight
recent
progress
in
design
platinum,
ruthenium,
iridium,
gold
other
transition
complexes,
especially
for
applications
as
anticancer
anti‐infective
agents.
In
particular,
understanding
excited
state
chemistry
related
identification
bioactive
species
(excited
metallomics/pharmacophores)
is
important.
metallodrugs
are
classified
here
photocatalysts,
photorelease
agents
ligand‐activated
Their
activation
wavelengths,
cellular
action,
experimental
theoretical
metallomics
states
photoproducts
discussed
explore
strategies
investigation
photoactivatable
metallodrugs.
These
have
potential
clinical
Photodynamic
Therapy
(PDT),
Photoactivated
Chemotherapy
(PACT)
Photothermal
(PTT).
RSC Advances,
Journal Year:
2025,
Volume and Issue:
15(13), P. 9763 - 9786
Published: Jan. 1, 2025
This
review
highlights
the
advantages
of
optimizing
various
DSSC
components,
such
as
Ru(
ii
)-polypyridyl
photosensitizers,
co-adsorbents,
electrolytes,
electrolyte
additives,
and
counter
electrodes,
to
improve
overall
performance
DSSCs.