Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(4)
Published: Aug. 12, 2023
Developing
high-performance
n-type
polymer
mixed
ionic-electronic
conductors
(PMIECs)
is
a
grand
challenge,
which
largely
determines
their
applications
in
vaious
organic
electronic
devices,
such
as
electrochemical
transistors
(OECTs)
and
thermoelectrics
(OTEs).
Herein,
two
halogen-functionalized
PMIECs
f-BTI2g-TVTF
f-BTI2g-TVTCl
built
from
fused
bithiophene
imide
dimer
(f-BTI2)
the
acceptor
unit
halogenated
thienylene-vinylene-thienylene
(TVT)
donor
co-unit
are
reported.
Compared
to
control
f-BTI2g-TVT,
fluorinated
shows
lower-positioned
lowest
unoccupied
molecular
orbital
(LUMO),
improved
charge
transport
property,
greater
ion
uptake
capacity.
Consequently,
delivers
state-of-the-art
µC*
of
90.2
F
cm
Macromolecules,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 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.
Chemical Society Reviews,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 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.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(32)
Published: June 8, 2022
Abstract
The
development
of
high‐performance
n‐type
polymer
semiconductors
is
powered
by
the
design
and
synthesis
electron‐deficient
building
blocks
with
optimized
physicochemical
properties.
By
meticulously
installing
an
imide
group
onto
fluorene
its
cyanated
derivative,
we
report
here
two
very
blocks,
imide‐functionalized
fluorenone
(
FOI
)
derivative
FCNI
),
both
featuring
a
deep‐lying
lowest
unoccupied
molecular
orbital
energy
level
down
to
−4.05
eV
highly
coplanar
framework,
endowing
them
ideal
units
for
constructing
polymers.
Thus,
series
polymers
are
built
from
them,
exhibiting
unipolar
transport
character
highest
electron
mobility
0.11
cm
2
V
−1
s
.
Hence,
offer
remarkable
platform
accessing
functionalization
appropriate
(hetero)arenes
powerful
strategy
developing
LUMOs
organic
electronics.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(4)
Published: Aug. 12, 2023
Developing
high-performance
n-type
polymer
mixed
ionic-electronic
conductors
(PMIECs)
is
a
grand
challenge,
which
largely
determines
their
applications
in
vaious
organic
electronic
devices,
such
as
electrochemical
transistors
(OECTs)
and
thermoelectrics
(OTEs).
Herein,
two
halogen-functionalized
PMIECs
f-BTI2g-TVTF
f-BTI2g-TVTCl
built
from
fused
bithiophene
imide
dimer
(f-BTI2)
the
acceptor
unit
halogenated
thienylene-vinylene-thienylene
(TVT)
donor
co-unit
are
reported.
Compared
to
control
f-BTI2g-TVT,
fluorinated
shows
lower-positioned
lowest
unoccupied
molecular
orbital
(LUMO),
improved
charge
transport
property,
greater
ion
uptake
capacity.
Consequently,
delivers
state-of-the-art
µC*
of
90.2
F
cm
