Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 19, 2024
Abstract
Unconventional
fluorescent
polymers
are
attracting
increasing
attention
because
of
their
excellent
biocompatibility
and
wide
applications.
However,
these
typically
exhibit
weak
long‐wavelength
emission.
Herein,
three
novel
aliphatic
linear
polyphosphate
esters
prepared
via
a
one‐pot
polycondensation
reaction.
Such
can
generate
strong
blue,
green,
yellow,
red
fluorescence
under
different
excitations.
Experimental
theoretical
results
showed
that
the
cluster
C═C
phosphate
ester
groups
attracted
negative
charge
isolated
functional
groups,
alkane
chains
hydrogen
atoms
also
provided
for
spatial
electronic
communication.
Then,
intrinsic
arises
from
charge‐transfer‐induced
enhanced
Additionally,
show
potential
applications
in
film,
ion
detection,
bacteria
imaging,
visualization
NaCl
crystallization
process.
This
work
provides
universal
design
strategy
developing
emissive
gains
new
insight
into
emission
mechanisms.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(21)
Published: Feb. 22, 2024
All-polymer
solar
cells
(all-PSCs)
have
been
regarded
as
one
of
the
most
promising
candidates
for
commercial
applications
owing
to
their
outstanding
advantages
such
mechanical
flexibility,
light
weight
and
stable
film
morphology.
However,
compared
large
amount
new-emerging
excellent
polymer
acceptors,
development
high-performance
donor
lags
behind.
Herein,
a
new
D-π-A
type
donor,
namely
QQ1,
was
developed
based
on
dithienoquinoxalineimide
(DTQI)
A
unit,
benzodithiophene
with
thiophene-conjugated
side
chains
(BDTT)
D
alkyl-thiophene
π-bridge,
respectively.
QQ1
not
only
possesses
strong
dipole
moment,
but
also
shows
wide
band
gap
1.80
eV
deep
HOMO
energy
level
-5.47
eV,
even
without
halogen
substituents
that
are
commonly
indispensable
donors.
When
blended
classic
acceptor
PY-IT,
QQ1-based
all-PSC
delivers
an
PCE
18.81
%.
After
introduction
F-BTA3
third
component,
record
19.20
%
obtained,
highest
value
reported
so
far
all-PSCs.
The
impressive
photovoltaic
performance
originates
from
broad
absorption
range,
reduced
loss,
compact
π-π
stacking.
These
results
provide
insight
in
rational
design
novel
nonhalogenated
donors
further
Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
16(1)
Published: Nov. 23, 2023
Abstract
With
plenty
of
popular
and
effective
ternary
organic
solar
cells
(OSCs)
construction
strategies
proposed
applied,
its
power
conversion
efficiencies
(PCEs)
have
come
to
a
new
level
over
19%
in
single-junction
devices.
However,
previous
studies
are
heavily
based
chloroform
(CF)
leaving
behind
substantial
knowledge
deficiencies
understanding
the
influence
solvent
choice
when
introducing
third
component.
Herein,
we
present
case
where
newly
designed
asymmetric
small
molecular
acceptor
using
fluoro-methoxylated
end-group
modification
strategy,
named
BTP-BO-3FO
with
enlarged
bandgap,
brings
different
morphological
evolution
performance
improvement
effect
on
host
system
PM6:BTP-eC9,
processed
by
CF
ortho-xylene
(
o
-XY).
detailed
analyses
supported
series
experiments,
best
PCE
19.24%
for
green
solvent-processed
OSCs
is
found
be
fruit
finely
tuned
crystalline
ordering
general
aggregation
motif,
which
furthermore
nourishes
favorable
charge
generation
recombination
behavior.
Likewise,
can
achieved
replacing
spin-coating
blade
coating
active
layer
deposition.
This
work
focuses
commonly
met
yet
frequently
ignored
issues
building
blends
demonstrate
cutting-edge
device
performance,
hence,
will
instructive
other
OSC
works
future.
SusMat,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 17, 2025
ABSTRACT
All‐polymer
solar
cells
(all‐PSCs)
are
of
interest
owing
to
their
unique
advantages,
including
remarkably
improved
device
stability
and
exceptional
mechanical
stretchability.
Over
recent
years,
there
has
been
a
notable
increase
in
the
power
conversion
efficiency
(PCE)
all‐PSCs,
largely
attributed
advancements
morphology
control
active
layer.
Notably,
domain
size
is
paramount
importance
as
it
impacts
critical
factors
such
exciton
dissociation,
charge
transport,
collection.
However,
low
glass
transition
temperature
conjugated
polymers,
coupled
with
minimal
change
mixing
entropy,
often
results
an
excessive
degree
phase
separation.
Consequently,
essential
comprehend
evolution
separation
develop
strategies
regulate
size.
In
this
review,
we
elucidate
key
parameters
that
contribute
enhancement
present
qualitative
quantitative
characterization
techniques
for
Building
on
foundation,
introduce
principles
regulating
sizes,
encompassing
crystallinity,
miscibility,
molecular
conformation
from
thermodynamic
perspective,
well
film‐forming
kinetics
crystallization
sequence
kinetic
perspective.
Lastly,
offer
insights
into
current
challenges
potential
future
prospects
all‐PSCs.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(19)
Published: Jan. 11, 2024
Abstract
To
achieve
commercial
application
of
organic
solar
cells
(OSCs),
it
is
necessary
to
reduce
material
costs
and
improve
device
efficiency.
This
paper
reports
on
the
utilization
a
multifunctional
building
block,
namely
3‐cyanoesterthiophene,
which
exhibits
simple
structure
accessibility
synthetic
for
cost‐effective
high‐performance
polymer
donors
(PDs).
Meanwhile,
ternary
terpolymerization
strategies
have
been
studied.
Two
similar
PDs,
PBTCl0‐TCA
PBTCl100‐TCA,
are
synthesized,
devices
exhibit
less‐than‐satisfactory
efficiency
13.21%
11.53%
due
mismatching
energy
level
imperfect
morphology.
The
two
PDs
with
comparable
structures
commendable
compatibility
easily
form
alloy‐like
phase
in
active
layer,
can
effectively
boost
14.17%
retained
high
J
SC
significant
improved
open‐circuit
voltage
(
V
OC
)
fill
factor
(FF).
Encouraged
by
blending
phenomenon,
donor
(PBTCl50‐TCA)
same
ratio
random
designed.
And
over
17%
binary
OSCs
using
demonstrated.
synergies
incorporation
cyanoester‐group
terpolymer
endow
developed
deep‐lying
levels,
face‐on
orientation,
thermodynamic
miscibility
prevailing
nonfullerene
acceptor
appropriate
crystallinity.
findings
study
provide
valuable
insights
support
advancement
PDs.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(10)
Published: Jan. 8, 2024
Abstract
End‐groups
halogenation
strategies,
generally
refers
to
fluorination
and
chlorination,
have
been
confirmed
as
simple
efficient
methods
regulate
the
photoelectric
performance
of
non‐fullerene
acceptors
(NFAs),
but
a
controversy
over
which
one
is
better
has
existed
for
long
time.
Here,
two
novel
NFAs,
C9N3‐4F
C9N3‐4Cl,
featured
with
different
end‐groups
were
successfully
synthesized
blended
renowned
donors,
D18
PM6,
electron‐withdrawing
units.
Detailed
theoretical
calculations
morphology
characterizations
interface
structures
indicate
NFAs
based
on
possess
binding
energy
miscibility
shows
an
obvious
influence
phase‐separation
morphology,
charge
transport
behavior
device
performance.
After
verified
by
other
three
pairs
reported
universal
conclusion
obtained
devices
fluorination‐end‐groups‐based
PM6
chlorination‐end‐groups‐based
show
excellent
efficiencies,
high
fill
factors
stability.
Finally,
D18:
PM6:
C9N3‐4Cl
yield
outstanding
efficiency
18.53
%
18.00
%,
respectively.
Suitably
selecting
donor
regulating
donor/acceptor
can
accurately
present
conversion
ability
points
out
way
further
molecular
design
selection
high‐performance
stable
organic
solar
cells.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(21)
Published: Feb. 22, 2024
Abstract
All‐polymer
solar
cells
(all‐PSCs)
have
been
regarded
as
one
of
the
most
promising
candidates
for
commercial
applications
owing
to
their
outstanding
advantages
such
mechanical
flexibility,
light
weight
and
stable
film
morphology.
However,
compared
large
amount
new‐emerging
excellent
polymer
acceptors,
development
high‐performance
donor
lags
behind.
Herein,
a
new
D‐π‐A
type
donor,
namely
QQ1,
was
developed
based
on
dithienoquinoxalineimide
(DTQI)
A
unit,
benzodithiophene
with
thiophene‐conjugated
side
chains
(BDTT)
D
alkyl‐thiophene
π‐bridge,
respectively.
QQ1
not
only
possesses
strong
dipole
moment,
but
also
shows
wide
band
gap
1.80
eV
deep
HOMO
energy
level
−5.47
eV,
even
without
halogen
substituents
that
are
commonly
indispensable
donors.
When
blended
classic
acceptor
PY‐IT,
QQ1‐based
all‐PSC
delivers
an
PCE
18.81
%.
After
introduction
F‐BTA3
third
component,
record
19.20
%
obtained,
highest
value
reported
so
far
all‐PSCs.
The
impressive
photovoltaic
performance
originates
from
broad
absorption
range,
reduced
loss,
compact
π–π
stacking.
These
results
provide
insight
in
rational
design
novel
nonhalogenated
donors
further
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(47)
Published: Aug. 13, 2024
Abstract
Tuning
full‐color
emission
of
polymers
holds
significant
promise.
However,
preparing
unconventional
luminescence
with
color‐tunability
in
dilute
solution
and
understanding
the
relationship
between
non‐covalent
interactions
luminescent
behavior
remains
a
great
challenge.
We
report
two
emitters
(P1
P2)
incorporating
tetracoordinate
boron.
The
P1
non‐conjugated
D‐π‐A
structure,
exhibited
red
delayed
fluorescence
at
645
nm
quantum
yield
9.15
%
aggregates.
Notably,
wavelength
can
be
tuned
from
418
to
588
different
solvent.
Similarly,
P2
also
adjusted
by
manipulating
solvent
fluorophore.
Experimental
characterization
theoretical
calculations
indicate
that
B←N
bond
electronic
fluorophore
significantly
regulate
equilibrium
electrostatic
potential
(ESP)
intramolecular
O⋅⋅⋅O
P1,
thereby
modulating
its
wavelength.
Additionally,
these
showed
excellent
fluoride
ions
detection.
This
work
provides
new
insights
into
complex
effects
intermolecular
on
properties.
Macromolecules,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 10, 2025
Unconventional
fluorescent
polymers
have
attracted
wide
attention
due
to
their
excellent
biocompatibility,
facile
preparation,
and
unique
properties.
However,
developing
high-performance
revealing
the
emission
mechanism
are
still
challenging.
Herein,
explore
relationship
between
chemical
structures
properties,
four
hyperbranched
poly(silicophosphate)
esters
(HSiP0-HSiP3)
were
prepared.
Increasing
P═O(O)3:Si(O)3
ratios
generated
enhanced
red
fluorescence.
Experimental
theoretical
calculation
results
showed
that
n-π
interactions
P═O
O/N
atoms
promoted
concentration
of
negative
electrostatic
potential
spatial
electronic
communications,
then
decreased
energy
gap
strong
emission.
Meanwhile,
cluster
functional
groups
a
charge
isolated
groups,
which
further
Additionally,
these
in
bacterial
imaging
information
encryption.
Thus,
this
work
provides
an
efficient
method
for
long-wavelength
materials
while
providing
new
insights
into
origin.
