ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
15(24), С. 29042 - 29051
Опубликована: Июнь 6, 2023
Conjugated
polymer
frameworks
(CPFs)
have
recently
sparked
tremendous
research
interest
due
to
their
broad
potentials
in
various
frontline
application
areas
such
as
photocatalysis,
sensing,
gas
storage,
energy
etc.
These
framework
materials,
without
sidechains
or
functional
groups
on
backbone,
are
generally
insoluble
common
organic
solvents
and
less
solution
processable
for
further
device
applications.
There
few
reports
metal-free
electrocatalysis,
especially
oxygen
evolution
reaction
(OER)
using
CPF.
Herein,
we
developed
two
triazine-based
donor-acceptor
conjugated
by
coupling
a
3-substituted
thiophene
(donor)
unit
with
triazine
ring
(acceptor)
through
phenyl
spacer.
Two
different
sidechains,
alkyl
oligoethylene
glycol,
were
rationally
introduced
into
the
3-position
of
investigate
effect
side-chain
functionality
electrocatalytic
property.
Both
CPFs
demonstrated
superior
OER
activity
long-term
durability.
The
performance
CPF2,
which
achieved
current
density
10
mA/cm2
at
an
overpotential
(η)
328
mV,
is
much
CPF1,
reached
same
488
mV.
porous
interconnected
nanostructure
building
blocks,
allowed
fast
charge
mass
transport
processes,
could
be
attributed
higher
both
CPFs.
However,
CPF2
compared
CPF1
may
presence
more
polar
oxygen-containing
ethylene
glycol
side
chain,
enhances
surface
hydrophilicity,
promotes
better
ion/charge
transfer,
increases
accessibility
active
sites
toward
adsorption
lower
π-π
stacking
hexyl
chain
present
CPF1.
DFT
study
also
supports
plausible
CPF2.
This
confirms
promising
potentiality
CPF
electrocatalysts
sidechain
modification
improve
ACS Nano,
Год журнала:
2024,
Номер
18(15), С. 10485 - 10494
Опубликована: Апрель 2, 2024
Producing
high-quality
two-dimensional
(2D)
covalent
organic
frameworks
(COFs)
is
crucial
for
industrial
applications.
However,
this
remains
significantly
challenging
with
current
synthetic
techniques.
A
deep
understanding
of
the
intermolecular
interactions,
reaction
temperature,
and
oligomers
essential
to
facilitate
growth
highly
crystalline
COF
films.
Herein,
molecular
dynamics
simulations
were
employed
explore
2D
COFs
from
monomer
assemblies
on
graphene.
Our
results
showed
that
chain
reactions
dominated
surface
van
der
Waals
(vdW)
interactions
important
in
enhancing
crystallinity
through
preorganization.
Moreover,
appropriately
tuning
temperature
improved
minimized
effects
amorphous
oligomers.
Additionally,
strength
interface
between
graphene
substrate
indicated
adhesion
force
was
proportional
COF.
This
work
reveals
mechanisms
nucleation
surfaces
provides
theoretical
guidance
fabricating
polymer-based
nanomaterials.
Materials Advances,
Год журнала:
2024,
Номер
5(10), С. 4055 - 4077
Опубликована: Янв. 1, 2024
We
thoroughly
discussed
the
practical
applications
of
vPOPs
in
environmental
remediation,
encompassing
various
tasks
such
as
removing
organic/inorganic
pollutants,
adsorbing
iodine/toxic
gases,
storing
and
converting
energy
etc
.
