Angewandte Chemie,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 15, 2024
Abstract
n‐Type
conjugated
polymers
featuring
low‐lying
lowest
unoccupied
molecular
orbital
(LUMO)
energy
levels
are
essential
for
achieving
high‐performance
n‐type
organic
thin‐film
transistors
(OTFTs)
and
thermoelectrics
(OTEs).
However,
the
synthesis
of
acceptors
with
strong
electron‐withdrawing
characteristics
presents
a
significant
challenge.
Herein,
peripheral
functionalization
strategy
is
employed
on
tricyclic
framework
anthracene
by
introducing
dual
N,O
‐bidentate
BF
2
/B(CN)
groups
to
enhance
its
capability.
This
approach
successfully
navigates
synthetic
challenges,
leading
development
two
novel
acceptor
building
blocks:
DBNF
DBNCN.
Compared
counterparts
single
moiety,
DBNCN
exhibit
an
extended
π‐backbone,
enhanced
packing,
improved
properties.
Utilizing
these
innovative
monomers,
copolymers,
PDBNF
PDBNCN,
synthesized,
which
considerably
suppressed
LUMO
≈−4.0
eV.
The
deep
together
favourable
bimodal
packing
orientation
leads
remarkable
electron
mobility
3.04
cm
V
−1
s
stability
in
OTFTs.
Importantly,
efficient
n‐doping
OTEs
achieved
exhibiting
exceptional
conductivity
95.5
S
maximum
power
factor
147.8
μW
m
K
−2
—among
highest
reported
solution‐processed
polymers.
work
underscores
effectiveness
B←N
cyano
functionalities
attaining
plastic
electronics.
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.
Macromolecular Rapid Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 13, 2025
Abstract
Conjugated
polymers
have
attracted
extensive
attention
as
semiconducting
materials
in
wearable
and
flexible
electronics.
In
this
study,
we
utilize
atom‐economical
Knoevenagel
reaction
to
construct
two
conjugated
polymers,
PTDPP‐CNTT
PFDPP‐CNTT
,
based
on
dialdehyde‐thiophene/furan‐flanked
diketopyrrolopyrrole
(DPP)
2,2′‐(thieno[3,2‐
b
]thiophene‐2,5‐diyl)diacetonitrile
(CNTT).
The
resulting
exhibited
suitable
highest
occupied
molecular
orbital/lowest
unoccupied
orbital
(HOMO/LUMO)
energy
levels,
small
bandgaps,
broad
UV–vis–NIR
absorptions
(≈400–1000
nm),
endowing
them
with
photothermal
balanced
ambipolar
properties
hole
electron
mobilities
over
10
−3
cm
2
V
−1
s
.
Additionally,
‐based
organic
field‐effect
transistors
(OFETs)
devices
show
photo‐responsive
characteristics
at
808
980
nm
the
transport
channel
photo‐responsivenesses
of
9.0
×
A/W
0.4
A/W,
respectively,
suggesting
potential
application
NIR‐phototransistors.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 11, 2024
Abstract
Interface
engineering
has
become
the
mainstream
for
improving
performance
of
perovskite
solar
cells
(PSCs).
Interfacial
dipole
(ID)
molecules
have
emerged
as
a
feasible
and
effective
strategy
to
alleviate
charge
carrier
loss
energy
in
PSCs.
Here,
three
symmetrical
donor–acceptor
interfacial
(named
PzT,
PzTE,
PzTN)
are
designed
synthesized
with
identical
hole
transport
backbone
different
anchoring
groups.
The
ID
molecule
is
introduced
into
interface
between
layer
layer.
moments
regulate
surface
work
function
energy‐level
alignment
perovskites,
improve
extraction,
reduce
at
interface.
Meanwhile,
groups
coordinate
defects
on
PVK
HTL,
trap
state
density
accumulation,
mitigate
non‐radiative
recombination
losses.
As
result,
PzTN‐modified
PSC
achieved
champion
power
conversion
efficiency
25.34%
photovoltage
1.176
V
fill
factor
(FF)
83.27%,
accompanied
by
almost
undetectable
hysteresis
excellent
operating
stability.
This
research
demonstrates
efficient
stable
PSCs
molecules.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 30, 2024
Abstract
Photo‐patterning
of
polymer
semiconductors
using
photo‐crosslinkers
has
shown
potential
for
organic
circuit
fabrication
via
solution
processing
techniques.
However,
the
performance
patterning,
including
resolution
(
R
),
UV
light
exposure
dose,
sensitivity
S
and
contrast
γ
remains
unsatisfactory.
In
this
study,
a
novel
conjugated
based
photo‐crosslinker
PN3
,
Figure
1a)
is
reported
first
time,
which
entails
phenyl‐substituted
azide
groups
in
its
side
chains.
Due
to
π
–
interactions
between
backbone
those
semiconductors,
exhibits
superior
miscibility
with
compared
commonly
used
small
molecule
4Bx
(Figure
1a).
Consequently,
photo‐patterning
demonstrates
improved
much
lower
higher
.
By
utilizing
electron
beam
lithography,
patterned
arrays
resolutions
down
500
nm
clearer
edges
are
successfully
fabricated
Furthermore,
PDPP4T
p
‐type
semiconductor
1b),
after
being
doped,
can
function
as
source‐drain
electrodes
fabricating
field‐effect
transistors
(FETs)
comparable
charge
mobility
significantly
sub‐threshold
swing
value
gold
electrodes.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 25, 2025
Abstract
Developing
unipolar
n‐type
semiconducting
polymers
with
electron
mobility
(
µ
e
)
exceeding
10
cm
2
V
−1
s
presents
a
significant
challenge
in
organic
electronics.
In
response
to
this
challenge,
novel
molecular
architecture‐tailoring
approach
known
as
the
heteroannulated
acceptor
dimerization
strategy
is
introduced.
Through
theoretical
framework
that
integrates
heteroatom
substitution
and
based
on
parent
hexylthiophene‐flanked
benzothiadiazole,
our
establishes
modulate
frontier
orbital
(FMO)
levels
while
enhancing
planarity.
The
removal
of
alkyl
side
chains
flanking
thiophene
units
leads
more
planar
polymer
backbone,
evidenced
by
dihedral
angles
0°.
prediction
deeper
FMO
oxadiazole‐containing
experimentally
validated,
demonstrating
efficacy
design
principles.
Using
strategy,
new
copolymers
are
synthesized
via
modified
palladium/copper
co‐catalyzed
direct
arylation
polymerization
protocol
10‐gram
scale.
Compared
its
hexylthiophene‐counterpart
pN‐BBOE‐C6,
pN‐BBOE‐H
exhibits
exceptional
structural
electronic
properties,
including
π–π
stacking
distance
3.5
Å
11.2
,
among
highest
for
polymers.
This
work
not
only
advances
understanding
materials
but
also
provides
robust
designing
high‐performance
The
preparation
of
2‐arylazulenes
possessing
1‐naphthyl
substructure
is
achieved
via
Suzuki–Miyaura
coupling
with
various
arylboronic
acids.
Intramolecular
cyclization
using
Brønsted
acids
examined,
yielding
azulene‐fused
polycyclic
aromatic
hydrocarbons,
that
is,
azuleno[2,1‐
a
]phenalenones,
in
high
yields.
optical
properties
]phenalenones
are
characterized
by
UV/vis
and
fluorescence
spectroscopy,
revealing
halochromic
behavior
significant
under
acidic
conditions.
Electrochemical
also
assessed
voltammetry
spectroelectrochemical
experiments,
identifying
compounds
remarkable
electrochromic
behavior.
Macromolecules,
Год журнала:
2024,
Номер
57(14), С. 6540 - 6547
Опубликована: Июль 11, 2024
The
research
on
p-type
polymer
semiconductors
has
achieved
significant
progress
in
terms
of
material
diversity
and
device
performance,
while
the
performance
n-type
lagged
far
behind.
design
synthesis
electron-deficient
building
blocks
are
essential
for
development
high-performance
semiconductors.
Herein,
we
report
a
new
unit,
3,4,7,8-benzo[1,2-b:4,5-b′]dithiophenedimides
(BDTI),
its
derivative
dibromide
BDTI,
which
further
employed
to
construct
BDTI-based
donor–acceptor
copolymers.
These
polymers
show
highly
planar
backbones
deep
lowest
unoccupied
molecular
orbital
(LUMO)
levels
(from
−3.62
−3.95
eV),
facilitate
electron
injection
transport
their
thin
films.
highest
mobility
0.25
cm2
V–1
s–1
was
field-effect
transistor
(FET)
using
copolymer
containing
fluorinated
bithiophene
donor.
This
work
demonstrates
that
BDTI
is
promising
block
constructing
