Chemosensors,
Journal Year:
2023,
Volume and Issue:
11(2), P. 108 - 108
Published: Feb. 2, 2023
A
new
sensing
material,
Pt(II)-5-(4-carboxyphenyl)-10,15,20-tris(4-phenoxyphenyl)-porphyrin
(Pt(II)-COOH-TPOPP),
was
synthesized
and
characterized.
Polymeric
membranes
containing
the
porphyrin
three
different
plasticizers
were
used
as
an
electroactive
material
for
a
anion-selective
sensor.
The
best
composition
of
membrane
one
plasticized
with
dioctylsebacate
(DOS),
obtained
sensor
being
citrate-selective
in
linear
range
5
×
10−7–1
10−1
M
citrate.
slope
Nernstian
(19.73
mV/decade)
good
selectivity
towards
number
interfering
anions
lifetime
five
weeks.
Chemical Communications,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Recent
developments
in
porphyrin-based
artificial
photosynthetic
assemblies
are
highlighted,
emphasizing
biomimetic
photocatalytic
processes,
namely
water
splitting,
CO
2
reduction
and
alcohol
oxidation,
with
high
energetic
environmental
impact.
Polymers,
Journal Year:
2023,
Volume and Issue:
15(8), P. 1815 - 1815
Published: April 7, 2023
The
scientific
community
has
been
developing
promising
materials
to
increase
the
sustainability
and
efficiency
of
production
processes
pollutant
environmental
remediation
strategies.
Porous
organic
polymers
(POPs)
are
special
interest,
as
they
insoluble
custom-built
at
molecular
level,
endowed
with
low
densities
high
stability,
surface
areas,
porosity.
This
paper
describes
synthesis,
characterization,
performance
three
triazine-based
POPs
(T-POPs)
in
dye
adsorption
Henry
reaction
catalysis.
T-POPs
were
prepared
by
a
polycondensation
between
melamine
dialdehyde
(terephthalaldehyde
(T-POP1)
or
isophthalaldehyde
derivatives
hydroxyl
group
(T-POP2)
both
carboxyl
(T-POP3)).
crosslinked
mesoporous
polyaminal
structures,
areas
139.2
287.4
m2
g−1,
positive
charge,
thermal
proved
be
excellent
methyl
orange
adsorbents,
removing
anionic
an
>99%
just
15–20
min.
also
effective
for
methylene
blue
cationic
removal
from
water,
reaching
efficiencies
up
ca.
99.4%,
possibly
due
favorable
interactions
via
deprotonation
T-POP3
groups.
modification
most
basic
polymers,
T-POP1
T-POP2,
copper(II)
allowed
best
reactions
catalysis,
leading
conversions
(97%)
selectivities
(99.9%).
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
11(10), P. 5188 - 5198
Published: Jan. 1, 2023
Nickel(
ii
)
porphyrins
are
polymerized
via
chemical
vapor
deposition
into
highly
conjugated
structures.
The
careful
selection
of
the
substituent
enables
OER
to
be
performed
at
low
overpotential.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 18, 2025
Abstract
In
a
recent
report
(Chem.
Sci.,
2019,
10,
2613–2622),
it
was
shown
that
the
copper(II)
complex
of
tetrakis(4-N-methylpyridyl)porphyrin
serves
as
an
electrocatalyst
towards
efficient
oxygen
evolution
reaction
(OER)
with
onset
overpotential
310
mV.
Motivated
by
experimental
work,
we
perform
density
functional
theory
(DFT)
calculation
in
water
medium
employing
solvation
molecular
dynamics
(SMD)
model
to
find
out
mechanism
oxidation
process
taking
unsubstituted
porphyrin
(L).
Three
mechanisms
are
constructed.
Mechanism
I
starts
from
water-coordinated
[LCuII-OH2]
(1),
which
undergoes
proton-coupled
electron
transfer
(PCET)
[LCuIII-OH2]+
(2)
redox
potential
E
=
0.81
V
vs.
SHE.
Then,
deprotonation
form
[LCuIII-OH]
(3),
followed
one-electron
at
1.33
SHE
[LCuIV-OH]+
(4).
4
[LCuIV=O]
(6).
Next,
attacks
atom
4,
two
further
PCET
processes
<
1
NHE
oxygen-bound
copper
species
steps
[LCuII=O-+OH2]
(7)
→
[LCuII-OH-OH]
(8)
[LCuII-O•-OH]
[LCuII-O
O]
(9).
The
activation
barrier
for
step
is
calculated
be
5.6
kcal/mol.
II,
(3)
(5)
considered
2.08
NHE.
III,
attack
5
[LCuII-–O-OH]–
(10)
[LCuII-•O-O–]–
(11)
and
For
1
1.70
It
concluded
more
likely
take
place
SHE,
giving
rise
100
Further
modification
can
made
substituted
systems.
