Strong Anionic Fluorene Donor–Acceptor Copolyelectrolytes from Protected Hydrophobic Precursors
Macromolecular Rapid Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 2, 2025
Abstract
Conjugated
polyelectrolytes
(CPEs),
materials
that
are
defined
by
a
‐conjugated
backbone
and
charged
ionic
functional
groups,
frequently
prepared
through
direct
polymerization
of
monomer
species
in
aqueous
media.
This
route
is,
however,
often
accompanied
labor‐intensive
work‐up
procedures,
low
yields,
ultimately
results
difficult
to
characterize.
To
overcome
these
inconveniences,
this
work
protection
chemistry
is
applied
on
sulfonate‐functionalized
fluorene
monomers
polymerized
under
standard
Suzuki
polycondensation
conditions
obtain
protected
donor–acceptor
copolymers.
Treatment
the
organo‐soluble
precursors
nucleophilic
resulted
quantitative
removal
protecting
thereby
exposing
strong
anionic
functionalities.
Unlike
other
studies,
conjugated
backbones
remained
unharmed
during
process:
photophysical
properties
CPEs
identical
their
hydrophobic
precursors.
Язык: Английский
Organic Electrochemical Transistor Channel Materials: Copolymerization Versus Physical Mixing of Glycolated and Alkoxylated Polymers
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 7, 2025
Abstract
Organic
electrochemical
transistors
(OECTs)
feature
a
polymer
channel
capable
of
conducting
both
ions
and
electronic
charges.
The
choice
the
material
is
critical
for
OECT
performance.
Many
efforts
have
focused
on
improving
performance
via
chemical
tunability
conjugated
polymers
–
through
backbone,
side
chain,
molar
mass
engineering
leading
to
useful
design
principles
accumulation‐mode
materials.
However,
tuning
structure
often
requires
time‐consuming
optimization
synthesis
route.
Meanwhile,
variations
in
mass,
dispersity,
structural
defects,
metal
content
present
challenges
when
attempting
analyze
detailed
effects
modifications,
as
multiple
performance‐determining
factors
are
(unintentionally)
changed
at
same
time.
Therefore,
this
study
explores
blended
materials
obtained
by
physically
mixing
glycolated
alkoxylated
different
ratios,
compares
their
with
corresponding
statistical
copolymers.
It
shown
that
two
well‐performing
creates
blends
enable
rational
transistor
properties
without
compromising
Thus,
channels
based
hold
promise
technology
tailored
response,
only
needed
achieve
any
desired
chain
ratio,
simplifying
characteristics.
Язык: Английский
Benchmarking the Elastic Modulus of Conjugated Polymers with Nanoindentation
Macromolecules,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 19, 2025
The
elastic
modulus
is
a
critical
parameter
for
the
design
of
conjugated
polymers
wearable
electronics
and
correlates
with
electrical
thermal
transport.
Yet,
widely
different
values
have
been
reported
same
material
because
influence
processing
measurement
conditions,
including
temperature,
mode,
direction,
time
scale
deformation.
Thus,
results
obtained
via
methods
are
usually
not
considered
to
be
comparable.
Here,
disparate
techniques
from
nanoindentation
tensile
testing
free-standing
films
or
on
water,
buckling
analysis,
dynamic
mechanical
oscillatory
shear
rheometry,
atomic
force
microscopy
compared.
Strikingly,
batch
regioregular
poly(3-hexylthiophene)
differ
by
factor
less
than
four,
which
suggests
that
an
approximate
comparison
possible.
Considering
small
amount
typically
available,
in
combination
creep
analysis
identified
as
reliable
method
probing
moduli
ranging
0.1
GPa
case
polythiophene
oligoether
side
chains
several
without
chains.
Since
can
display
anisotropic
values,
it
proposed
complemented
in-plane
technique
such
ensure
full
characterization
using
modes
Язык: Английский
Open-flask, ambient temperature direct arylation synthesis of mixed ionic-electronic conductors
Science Advances,
Год журнала:
2025,
Номер
11(19)
Опубликована: Май 7, 2025
Conjugated
polymers
are
widely
studied
for
application
areas
ranging
from
energy
technology
to
wearable
electronics
and
bioelectronics.
To
develop
a
truly
sustainable
technology,
environmentally
benign
synthesis
is
essential.
Here,
the
open-flask
of
multitude
conjugated
at
room
temperature
by
ambient
direct
arylation
polymerization
(ADAP)
demonstrated.
The
batch
over
100
grams
polymer
in
green
solvent
continuous
droplet
flow
without
any
solid
support
described.
Polymers
prepared
ADAP
characterized
improved
structural
order
compared
materials
other
methods.
Hence,
organic
electrochemical
transistors
(OECTs)
feature
beyond
state-of-the-art
electrical
properties,
i.e.,
an
OECT
hole
mobility
μ
as
high
6
cm
2
V
−1
s
,
volumetric
capacitance
C
*
200
F
−3
thus
figure
merit
[μ
]
exceeding
1100
.
Thus,
paves
way
large-scale
production
high-performance
polymers.
Язык: Английский
Small signal analysis for the characterization of organic electrochemical transistors
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Сен. 1, 2024
Abstract
A
method
for
the
characterization
of
organic
electrochemical
transistors
(OECTs)
based
on
small
signal
analysis
is
presented
that
allows
to
determine
electronic
mobility
as
a
function
continuous
gate
potential
using
standard
two-channel
AC
potentiostat.
Vector
in
frequency
domain
exclude
parasitic
components
both
ionic
and
conduction
regardless
film
thickness,
thus
resulting
deviation
low
4%.
Besides
mobility,
OECTs
also
provides
information
about
wide
range
other
parameters
including
conductance,
transconductance,
conductivity
volumetric
capacitance
through
single
measurement.
General
applicability
demonstrated
by
characterizing
devices
n-type,
p-type,
ambipolar
materials
operating
accumulation
or
depletion
modes.
Accurate
benchmarking
mixed
ionic-electronic
conductors
can
be
anticipated
guide
development
design
bioelectronic
devices.
Язык: Английский