Introduction of Electron Donor Groups into the Azulene Structure: The Appearance of Intense Absorption and Emission in the Visible Region
N. Merkhatuly,
Ablaykhan Iskanderov,
Saltanat Abeuova
и другие.
Molecules,
Год журнала:
2024,
Номер
29(14), С. 3354 - 3354
Опубликована: Июль 17, 2024
In
this
work,
through
the
Suzuki-Miyaura
cross-coupling
reaction
with
high
yields,
new
π-conjugated
azulene
compounds
containing
diphenylaniline
groups
at
positions
2
and
6
of
were
synthesized.
The
obtained
diphenylaniline-azulenes
have
intensely
visible-light
absorbing
emitting
(in
wavelength
range
from
400
to
600
nm)
properties.
It
has
been
shown
that
such
unique
optical
properties,
in
particular
fluorescent
emission
region
blue
green
photoluminescence
(λem
495
525
nm),
which
absent
original
azulene,
are
result
electron
donor
effect
groups,
significantly
changes
electronic
structure
leads
allowed
HOMO
→
LUMO
transition.
Язык: Английский
Organic–Inorganic Hybrid Perovskite Photosensitive Field‐Effect Transistor Enabled by Poly(3‐Hexylthiophene‐2,5‐Diyl) Channel Layer
Advanced Optical Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 6, 2024
Abstract
Photosensitive
field‐effect
transistors
(PhFETs)
are
three‐terminal
photodetectors
that
enable
photocurrent
modulation
and
amplification
through
gate‐voltage
control.
Organic‐inorganic
hybrid
perovskites
known
for
their
high
photoelectric
conversion
efficiency,
but
ion
migration
in
these
materials
causes
gate‐field
shielding,
posing
challenges
constructing
PhFETs
using
only
3D
perovskites.
To
address
this
issue,
a
heterojunction
strategy
is
proposed
the
stable
process‐compatible
organic
semiconductor
poly(3‐hexylthiophene‐2,5‐diyl)
(P3HT)
as
channel
layer
organic‐inorganic
perovskite
cesium‐doped
formamidinium
lead
trihalide
(FA
0.9
Cs
0.1
PbI
3
)
light
absorption
layer.
The
bottom‐gate
top‐contact
fabricated
all‐solution
processes.
By
comparing
PhFET
performance
across
three
active‐layer
structures
(perovskite,
P3HT,
perovskite/P3HT)
under
dark
illuminated
conditions,
it
found
devices
basically
do
not
exhibit
have
highest
light‐to‐dark
current
ratio;
P3HT
weak
photoresponse
at
532
nm;
contrast,
P3HT/perovskite
achieve
also
substantial
photoresponse.
effectively
modulates
or
amplifies
of
device,
yielding
nearly
ten‐fold
enhancements
responsivity
external
quantum
efficiency
compared
to
devices,
along
with
significantly
improved
response
speed.
This
study
advances
development
PhFETs.
Язык: Английский
Characterization of photophysical and electrochemical properties of a PNDT-T-DPP dye-based polymer with highly planar features and development of organic electronic applications
Dyes and Pigments,
Год журнала:
2024,
Номер
234, С. 112536 - 112536
Опубликована: Ноя. 15, 2024
Язык: Английский
Processing of a P(NDI2OD-T2) film without an intermediate wetting layer during spin-coating to improve charge carrier mobility
Polymer Chemistry,
Год журнала:
2024,
Номер
15(40), С. 4107 - 4114
Опубликована: Янв. 1, 2024
A
uniform
fibrous
morphology
and
an
optimal
electrical
performance
can
be
obtained
by
direct
formation
of
conjugated
polymer
films
on
a
substrate
without
intermediate
wetting
layer
via
controlling
solvent
evaporation.
Язык: Английский
Conjugated Diphenylaniline-Azulene Co-Oligomers with Intense Absorption and Emission in the Visible Region
Molecules,
Год журнала:
2024,
Номер
29(21), С. 5041 - 5041
Опубликована: Окт. 25, 2024
New
conjugated
2,6-diphenylaniline-azulene
co-oligomers
of
linear
and
branched
structure
were
synthesized
by
the
interaction
borylazulenes
with
diphenylaniline
bromides
under
Suzuki-Miyaura
cross-coupling
conditions.
The
obtained
diphenylaniline-azulene
intensively
absorb
emit
visible
light
(410-700
nm
region);
in
particular,
they
exhibit
strong
emissions
green,
as
well
orange,
range,
maxima
510/590
nm.
It
is
shown
that
such
properties
appear
a
result
positive
resonance
exposure
to
aniline
fragments
significantly
rearranging
electronic
azulene,
levels
energy
gaps
frontal
HOMO-LUMO
orbitals.
Язык: Английский