Recent developments in polymer semiconductors with excellent electron transport performances
Chemical Society Reviews,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
This
review
describes
the
design
considerations,
bonding
modes
between
monomers,
structural
modification
strategies,
and
applications
of
polymer
semiconductors
with
excellent
electron
transport
performances.
Язык: Английский
Charge Polarity Modulation and Efficient Electron Transport in Quinoid–Donor–Acceptor Polymers by Acceptor Engineering for High-Performance Transistors
Macromolecules,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Fine-tuning
the
charge
polarity
and
enhancing
electron
transport
in
conjugated
polymers
are
critical
for
developing
high-performance
organic
field-effect
transistors
(OFETs).
Quinoidal
polymers,
characterized
by
planar
backbones
deep-lying
lowest
unoccupied
molecular
orbital
(LUMO)
energy
levels,
offer
distinct
advantages
over
their
aromatic
counterparts
but
face
challenges
achieving
reliable
mobilities
exceeding
1
cm2
V–1
s–1.
Herein,
we
synthesized
a
set
of
novel
quinoid–donor–acceptor
(Q-D-A)
with
various
acceptor
units.
Increasing
strength
narrowed
band
gap,
lowered
LUMO
shifted
from
unipolar
p-type
to
ambipolar
ultimately
dominant
n-type
behavior.
The
electron-to-hole
mobility
ratio
increased
0
40
behavior
observed
Q-D-A
polymer
first
time.
Consequently,
strongest
acceptor-based
exhibited
backbone,
small
effective
mass,
high
crystallinity,
low
disorder,
resulting
1.20
s–1
decent
operational
stability.
This
is
record-high
value
quinoidal
transport.
Our
findings
viable
strategy
tuning
improving
providing
insights
into
structure–property
relationships
essential
advancing
electronics.
Язык: Английский
n‑Type Polymer Thermoelectric Materials Based on Benzodifurandione and F‐Substituted Thiophene Derivatives Synthesized via Direct Arylation and Aldol Polycondensation
Macromolecular Chemistry and Physics,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 7, 2025
Abstract
The
preparation
of
n‐type
conjugated
polymers
(CPs)
with
low‐lying
lowest
unoccupied
molecular
orbital
(LUMO)
energy
levels
is
crucial
for
developing
organic
electronics.
However,
limited
strategies
have
been
demonstrated
to
significantly
lower
the
LUMO
CPs.
Herein,
BDOPV
incorporated
strong
electron
affinity
as
acceptor
unit
and
F‐substituted
thiophene
derivatives
4F2T
4FTVT
donor
into
polymer
chain,
two
CPs
PB4F2T
PB4FTVT
are
synthesized
via
an
atom‐economic
direct
arylation
monomer‐aldol
polycondensation
procedure.
display
below
−4.0
eV
enable
unipolar
charge
transport
characteristics
in
thin‐film
transistors
(OTFTs)
facilitate
efficient
n‐doping
by
N
‐DMBI
thermoelectric
devices
(OTEs).
OTEs
fabricated
using
enhanced
performance,
a
conductivity
(σ)
0.90
S
cm⁻¹
power
factor
(PF)
reaching
up
0.50
µW
m⁻¹
K⁻
2
.
This
work
enriches
pool
semiconductors
combining
withdrawing
fluorinated
comonomer
effective
synthetic
protocol.
Язык: Английский