ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(43), P. 59234 - 59244
Published: Oct. 15, 2024
This
study
explores
the
synthesis
of
two
visible
light
active
organic
chromophore-based
composites
using
naphthalene
monoanhydride
(Np)
and
1,7-dibromoperylene
diester
(PMDE).
These
chromophores
feature
favorable
optical
electronic
properties
polyaromatic
skeletons
with
anhydride
functionalities
that
facilitate
π–π
interactions
between
chromophore
polymeric
carbon
nitride
(CN)
or
covalent
connections
NH2
groups
CN.
Accordingly,
heterogeneous
chromophore-CN
composite
photocatalysts
namely,
Np/CN(c)
PMDE/CN(c)
were
prepared
by
adopting
in
situ
calcination
(c)
Np/CN(a)
PMDE/CN(a)
ex
physical
adsorption
(a)
methods.
In
exhibited
H2
evolution
rates
(HER)
1069
705
μmol
h–1
g–1,
respectively,
which
are
significantly
higher
than
HER
465
252
respectively.
10,
7,
4.8,
2.5
times
bulk-CN,
indicating
potential
these
for
efficient
photocatalytic
evolution.
Surface
area
normalized
enhancements
3.8,
5.3,
6.6,
4.2
Np/CN(c),
PMDE/CN(c),
Np/CN(a),
respectively
compared
to
bulk-CN.
excellent
stabilities
under
prolonged
photoirradiation,
consistently
increasing
exposure
time.
Additionally,
metal-free
demonstrated
activities
towards
oxidative
amidation
aromatic
aldehydes,
up
80%
product
yields,
establishing
prospects
combining
homogeneous
entities
a
material
solar
energy
harvesting.
ACS Catalysis,
Journal Year:
2023,
Volume and Issue:
13(13), P. 9018 - 9024
Published: June 22, 2023
Semiconductor
quantum
dots
(QDs)
offer
many
advantages
as
photocatalysts
for
synthetic
photoredox
catalysis,
but
no
reports
have
explored
the
use
of
QDs
with
nickel
catalysts
C-C
bond
formation.
We
show
here
that
5.7
nm
CdS
are
robust
photoredox-promoted
cross-electrophile
coupling
(40
000
TON).
These
conditions
can
be
utilized
on
small
scale
(96-well
plate)
or
adapted
to
flow.
NMR
studies
triethanolamine
(TEOA)
capped
active
catalyst
and
TEOA
displace
native
phosphonate
carboxylate
ligands,
demonstrating
importance
QD
surface
chemistry.
Russian Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
93(5), P. RCR5124 - RCR5124
Published: May 1, 2024
The
interest
of
the
global
scientific
community
in
problems
CO<sub>2</sub>
utilization
and
returning
to
carbon
cycle
has
markedly
increased
recent
years.
Among
various
transformation
processes,
photocatalytic
reduction
is
one
most
promising.
Currently,
much
attention
paid
photocatalysts
based
on
graphitic
nitride,
since
use
g-C<sub>3</sub>N<sub>4</sub>
makes
it
possible
perform
under
visible
or
solar
light
irradiation.
To
increase
efficiency,
subjected
modifications
with
popular
promising
approach
being
synthesis
composite
other
semiconductors
form
heterostructures.
Depending
type
semiconductor,
transfer
photogenerated
charge
carriers
these
systems
can
occur
by
mechanisms,
which
largely
determine
course
process
rates
formation
reaction
products.
This
review
addresses
studies
g-C<sub>3</sub>N<sub>4</sub>,
emphasis
placed
mechanisms
carrier
distribution
products
reduction.
<br>The
bibliography
includes
235
references.
Organic Letters,
Journal Year:
2023,
Volume and Issue:
25(22), P. 4124 - 4129
Published: May 17, 2023
A
fully
heterogeneous
metallaphotocatalytic
C-C
cross-coupling
of
aryl/vinyl
halides
with
alkyl/allyltrifluoroborates
has
been
developed
by
employing
integrated
bipyridyl-Ni(II)-carbon
nitride
as
a
stable
and
recyclable
bifunctional
catalyst.
This
visible-light-mediated
protocol
allows
for
the
sustainable
synthesis
diverse
valuable
diarylmethanes
allylarenes
in
high
efficiency.
The Journal of Organic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 26, 2025
The
first
example
of
heterogeneous
photoredox-catalyzed
fluoroalkylation
4H-pyrido[1,2-a]pyrimidin-4-ones
has
been
developed.
With
low-cost
commercial
g-C3N4
as
the
recyclable
photocatalyst
and
cheap
sodium
fluoroalkyl
sulfonates
source,
a
variety
fluoroalkylated
pyridopyrimidinones
were
constructed
in
moderate
to
high
yields.
present
reaction
can
be
easily
scaled
up
with
good
efficiency,
catalytic
system
reused
5
times
slight
loss
activities.
Furthermore,
biological
activity
synthesized
compounds
was
preliminarily
investigated.
