Unveiling the Centrosymmetric Effect in the Design of Narrowband Fluorescent Emitters: From Single to Double Difluoroboron Cores
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 25, 2024
Narrowband
fluorescent
emitters
are
receiving
significant
attention
due
to
the
great
potential
for
creating
ultrahigh-definition
organic
light-emitting
diode
displays
(UHD-OLED).
Unveiling
innovative
mechanisms
design
new
high-performance
narrowband
is
a
concerted
endeavor
in
both
academic
and
industrial
circles.
Theoretical
calculations
reveal
that
centrosymmetric
dianilido-bipyridine
boron
difluoride
framework
(cs-DAPBF2)
exhibits
significantly
reduced
structural
relaxation
compared
previously
reported
asymmetric
structures
with
monofluoroboron
cores,
opportunities
development
of
emitters.
In
this
work,
we
present
dual
chelation-assisted
C–H/C–H
homocoupling
strategy
efficiently
synthesize
3,3′-amino-2,2′-bipyridine
skeleton,
enabling
straightforward
construction
series
symmetric
cs-DAPBF2-based
Through
molecular
optimization,
have
developed
green
emitter,
cs-DMeAPBF2-MP,
which
demonstrates
narrow
full
width
at
half-maximum
(fwhm)
20
nm,
high
photoluminescence
quantum
yield
(ΦPL)
98%,
large
molar
absorptivity
(ε)
2.10
×
104
M–1
cm–1,
horizontal
dipole
ratio
(Θ//)
77%.
These
properties
make
cs-DMeAPBF2-MP
promising
candidate
fabricating
high-efficiency,
diodes
(OLEDs)
minimal
efficiency
roll-off.
This
study
represents
first
successful
application
DAPBF2
architecture
OLEDs.
Язык: Английский
Facile Synthesis of Functional Polytrithiocarbonates from Multicomponent Tandem Polymerizations of CS2, Thiols, and Alkyl Halides
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 21, 2024
Polytrithiocarbonates
have
attracted
significant
attention
recently
because
of
their
good
thermal
stability,
light
refractivity,
crystallinity,
and
mechanical
properties;
however,
the
exploration
structures
functionalities
has
been
limited
by
synthetic
approaches.
Multicomponent
polymerization
featuring
simple
monomers,
mild
conditions,
diversified
product
structures,
high
efficiency
could
provide
a
powerful
versatile
tool
to
synthesize
various
polytrithiocarbonates
from
commercially
available
monomers.
Herein,
robust
efficient
multicomponent
tandem
(MCTP)
CS
Язык: Английский