Synlett,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 30, 2024
Abstract
Pd-catalyzed
cross-couplings
of
C–H
bonds
have
been
pursued
by
researchers
to
produce
unsymmetrical
C–C
directly
for
over
50
years.
Such
are
currently
prepared
Suzuki,
Kumada,
Stille,
Neigishi,
Heck,
or
Sonogashira
coupling
C–halogen
with
C–M
bonds.
A
big
challenge
is
obtain
high
cross-selectivity
cross-coupling
products,
especially
when
the
substrates
similar
chemical
bonds,
such
as
simple
arenes.
Lu
and
co-workers
studied
Pd
catalysis
in
aryl
since
2003.
This
account
introduces
their
strategy,
understanding,
research
control,
activation
modes,
establishment,
discusses
applications
approach
synthesis.
1
Introduction
2
Cross-Selectivity
Control
3
Conclusion
Energy & Environmental Science,
Journal Year:
2024,
Volume and Issue:
17(20), P. 7803 - 7815
Published: Jan. 1, 2024
A
tin-free
asymmetric
small-molecule
guest
donor
(
o
PhFO)
with
a
wide
bandgap
allows
PM6:
PhFO:BTP-ec9
ternary
OSCs
to
reach
champion
efficiency
of
19.5%
by
optimizing
blend
morphology
and
vertical
phase
separation
as
well
reducing
energy
loss.
Dalton Transactions,
Journal Year:
2024,
Volume and Issue:
53(32), P. 13340 - 13347
Published: Jan. 1, 2024
The
regioselectivity
for
the
C–H
functionalisation
of
polycyclic
aromatic
hydrocarbons
is
determined
not
by
cleavage
step
but
subsequent
reductive
elimination
step.
The Journal of Organic Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 14, 2024
By
using
weakly
coordinating
amines,
we
developed
remote
C-H
alkynylation
with
precise
control
of
reactivity
and
regioselectivity,
enabling
modification
complex
drugs,
natural
products,
materials.
The
readily
transformable
alkyne-containing
amine
products
would
facilitate
expedient
delivery
molecular
libraries
functionalized
amines
medium
Macromolecular Rapid Communications,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 27, 2024
The
development
of
n-type
polymers
for
organic
electrochemical
transistors
(OECTs)
has
lagged
significantly
behind
their
p-type
counterparts.
Moreover,
these
are
often
synthesized
via
Stille
polycondensation.
Herein,
three
with
thiazole-flanked
diketopyrrolopyrrole
is
as
the
monomer
through
C─H/C─H
oxidative
direct
arylation
polycondensation
(Oxi-DArP).
This
protocol
employs
unfunctionalized
(C─H
terminated)
monomers,
and
generated
byproducts
environmentally
benign.
electron-deficient
polymer
backbone
confers
LUMO
energy
levels
below
-4.20
eV,
enabling
all
them
to
exhibit
behavior
in
OECTs.
Additionally,
resulting
soluble
green
solvent
anisole.
With
an
optimized
alkyl
spacer
between
oligo(ethylene
glycol)
side
chain
conjugated
backbone,
gTzDPP-C8
showed
best
device
performance
geometry
normalized
transconductance
(g
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 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.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 8, 2024
Abstract
Reported
herein
is
the
first
example
of
a
copper‐mediated
C─H
cyclization
heterocycles
to
construct
structurally
diverse
carbonyl‐bridged
triphenylamine
compounds
with
multiple
resonance
thermally
activated
delayed
fluorescence
(TADF)
characteristics.
The
one‐pot
synthesis
method
exhibits
broad
substrate
scope
and
opens
new
avenue
for
rapidly
screening
high‐performance
organic
TADF
luminescent
materials.
Novel
single‐molecule
white‐light
material
5g
anti‐Kasha
dual‐emission
character
time
developed
shows
Commission
Internationale
de
l’Eclairage
(CIE)
coordinate
(0.33,
0.35)
in
thin
film,
can
be
used
fabricate
robust
low
cost
white
light‐emitting
diodes
(LED).
Furthermore,
fabricated
as
water‐dispersed
nanoparticles
(NPs)NPs,
which
efficiently
endocytosed
into
HeLa
cells
dual
emission
imaging
living
cells,
two‐channel
intensity
ratio
observe
intercellular
structure.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 21, 2024
This
study
addresses
a
challenge
in
organic
synthetic
chemistry:
the
direct
cleavage
of
amide
bonds,
which
is
typically
hampered
by
thermodynamic
stability
C(Ar)-C(acyl)
bond.
Previous
methods
often
rely
on
"CO"
extrusion-jointing
transition
metal-catalyzed
process
and
require
activated
tertiary
amides,
limiting
their
applicability
due
to
incompatibility
with
reactive
functional
groups
such
as
halogens.
Herein,
we
report
metal-free
approach
for
deamidative
cyclization
biaryl
diamides
via
radical
process,
yielding
dibenzolactam
derivatives.
Along
this
line,
have
developed
desulfonamidative
disulfonamides
produce
dibenzosultams
through
nucleophilic
aromatic
substitution,
demonstrating
high
selectivity
unsymmetrical
structures.
Additionally,
sulfamoyl
containing
both
sulfonamide
functionalities,
can
selectively
undergo
coupling
form
dibenzolactams,
offers
complementary
pathway
unsymmetric
dibenzolactams.
These
protocols
exhibit
excellent
compatibility
groups,
including
halogens,
providing
an
innovative
toolbox
development
thermally
delayed
fluorescence
(TADF)
materials
used
light
emitting
diodes
(OLEDs).
DMAC-PDO,
incorporating
acceptor
unit,
serves
efficient
blue
TADF
emitter
maximum
external
quantum
efficiency
(EQE
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 21, 2024
Abstract
This
study
addresses
a
challenge
in
organic
synthetic
chemistry:
the
direct
cleavage
of
amide
bonds,
which
is
typically
hampered
by
thermodynamic
stability
C(Ar)−C(acyl)
bond.
Previous
methods
often
rely
on
“CO”
extrusion‐jointing
transition
metal‐catalyzed
process
and
require
activated
tertiary
amides,
limiting
their
applicability
due
to
incompatibility
with
reactive
functional
groups
such
as
halogens.
Herein,
we
report
metal‐free
approach
for
deamidative
cyclization
biaryl
diamides
via
radical
process,
yielding
dibenzolactam
derivatives.
Along
this
line,
have
developed
desulfonamidative
disulfonamides
produce
dibenzosultams
through
nucleophilic
aromatic
substitution,
demonstrating
high
selectivity
unsymmetrical
structures.
Additionally,
sulfamoyl
containing
both
sulfonamide
functionalities,
can
selectively
undergo
coupling
form
dibenzolactams,
offers
complementary
pathway
unsymmetric
dibenzolactams.
These
protocols
exhibit
excellent
compatibility
groups,
including
halogens,
providing
an
innovative
toolbox
development
thermally
delayed
fluorescence
(TADF)
materials
used
light
emitting
diodes
(OLEDs).
DMAC‐PDO,
incorporating
acceptor
unit,
serves
efficient
blue
TADF
emitter
maximum
external
quantum
efficiency
(EQE
max
)
23.4
%.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(21), P. 5021 - 5021
Published: Oct. 24, 2024
The
activation
of
inert
C-H
bonds
remains
a
challenge
in
current
chemistry.
Here,
we
report
the
excellent
reactivity
anionic
gallylene
species
[LGa:][Na(THF)
