Chemistry - An Asian Journal,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 10, 2024
Understanding
the
fundamental
mechanisms
involved
in
construction
and
organization
of
multi-scale
structures
is
crucial
for
design
manufacture
complex
functional
systems
with
long-range
molecular
arrangements.
In
this
paper,
a
series
compounds
have
been
synthesized
using
racemic
binaphthols
as
skeleton
Suzuki
coupling
reaction
derivatization
at
6,6'
positions,
which
resulted
various
bearing
different
groups.
Control
over
self-assembly
these
binaphthol
derivatives
was
successfully
achieved
by
adjusting
types
positions
substituents
parent
compound,
revealed
key
factors
influencing
non-covalent
interactions
process.
For
example,
single-crystal
resulting
indicated
that
assembly
such
single
helix
double
based
on
non-traditional
hydrogen
bond
motifs
could
be
obtained,
fascinating
ladders
catenane
discovered.
Organic Letters,
Год журнала:
2024,
Номер
26(26), С. 5472 - 5477
Опубликована: Июнь 24, 2024
Three
dithio-fused
boron
dipyrromethenes
(BODIPYs),
DTFB-1,
DTFB-2,
and
DTFB-3,
in
which
symmetrically
S-heteroaromatic
ring
units
fused
at
[a],
zigzag,
[b]
bonds
of
the
parent
BODIPY
core,
respectively,
were
prepared
from
facile
efficient
post-functionalization
tetra-halogenated
BODIPYs
through
Pd-catalyzed
cyclization.
Dithio-fusion
various
positions
effectively
tunes
their
photophysical
properties
single-crystal
structural
packing
arrangements.
The
single-crystalline
microribbons
DTFB-2
exhibit
commendable
hole
mobilities
air,
reaching
up
to
0.03
cm2
V–1
s–1.
Beilstein Journal of Organic Chemistry,
Год журнала:
2025,
Номер
21, С. 270 - 276
Опубликована: Фев. 4, 2025
A
benzo[
rst
]pentaphene
(BPP)
substituted
by
an
isopropoxy
group
(BPP-OiPr)
was
synthesized
in
a
facile
manner.
Its
photophysical
properties
were
investigated
UV–vis
absorption
and
fluorescence
spectroscopy
compassion
to
pristine
BPP
its
oxidation
product,
]pentaphene-5,8-dione
(BPP-dione).
BPP-OiPr
exhibited
significantly
enhanced
photoluminescence
quantum
yield
(PLQY),
reaching
73%
comparison
(13%).
BPP-dione,
when
compared
the
parent
BPP,
also
displayed
improved
emission
from
first
excited
singlet
(S
1
)
state
with
PLQY
of
62%
intramolecular
charge-transfer
character.
The
rod-like
nano-
microcrystals
as
well
longer
wires
these
BPPs
revealed
scanning
electron
microscopy.
intriguing
optical
derivatives
may
lead
their
application
fluorophores.
Organic Chemistry Frontiers,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
A
novel
method
enables
inter-/intramolecular
benzannulation
to
synthesize
PAHs
have
been
disclosed.
Experimental
and
DFT
data
confirm
the
TDRA's
role
in
HAA
step
of
enolized
1,3-dicarbonyls
via
asynchronous
PCET.
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 26, 2025
Abstract
Achieving
outstanding
narrow‐band
emission
and
improving
the
triplet
exciton
utilization
efficiency
is
crucial
for
high
organic
light‐emitting
diodes
(OLEDs)
electroluminescence
(EL)
efficiency.
Herein,
novel
1,3‐asymmetrical
substituted
pyrene‐based
blue
“hot
exciton”
materials
with
aggregation‐induced
(AIE)
characteristics
are
synthesized,
utilizing
pyrene
ring's
staggered
energy
levels
high‐performance
OLEDs.
The
triphenylamine‐decorated
emitters
exhibited
narrow
full
width
at
half
maxima
(FWHM)
<
60
nm,
while
tetraphenylethylene‐decorated
compounds
displayed
a
higher
fluorescence
quantum
yield
but
broader
FWHM
in
film
state.
These
AIE
luminogens
(AIEgens)
show
good
EL
(>35.6%)
nondoped
OLED
devices.
Meanwhile,
both
pyrenes
further
utilized
as
an
emitter
layer
thermally
activated
delayed
(TADF)‐sensitized
OLEDs
great
performance.
Moreover,
TPE‐decorated
TPE‐
m
2Ph
demonstrated
maximum
brightness,
current
efficiency,
power
external
of
35230
cd
−2
,
42
A
−1
48
lm
W
14.9%,
respectively.
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
89(21), С. 15665 - 15677
Опубликована: Окт. 13, 2024
A
palladium-catalyzed
annulation
reaction
of
bay-diiodinated
arenes
with
o-chloroaromatic
carboxylic
acids
was
established.
This
approach
enables
the
synthesis
a
variety
polycyclic
aromatic
compounds,
especially
polyalkoxy-substituted
frequently
found
in
discotic
liquid-crystalline
materials.
The
investigations
indicate
that
product
2,3,8,9,12,13-hexakis(hexyloxy)-5-azadibenzo[fg,op]tetracene
demonstrates
favorable
room-temperature
properties.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 18, 2024
We
report
here
a
novel
family
of
ylidic
P-heteroarenes
(P1-P6),
structurally
featuring
unique
phosphonium
cyclopentadienylide
(P-Cp)-fused
π-skeletons
and
synthetically
prepared
via
an
unexpected
one-pot
[2+3]/[3+3]
phospha-annulation
reaction.
While
the
facile
modular
synthesis
allows
fine-tuning
their
optical
absorptions
redox
properties,
single-crystallographic
theoretical
analysis
these
further
reveal
that
fusion
P-Cp
moiety
leads
to
substantial
intramolecular
charge-separated
features
with
high
character
values
up
84
%.
Benefitted
from
such
dipolar
structures,
not
only
stepwise
electrophilic
substitution
reaction
for
structural
π-expansions,
but
also
exhibit
excellent
nonlinear
(NLO)
responses
limiting
(OL)
performances
comparable
or
exceed
those
C
Functionalized
polycyclic
aromatic
hydrocarbons
(PAHs)
are
essential
building
blocks
for
the
bottom-up
fabrication
of
structurally
uniform
nanocarbons.
Herein
we
report
a
simple
and
efficient
synthetic
method
toward
K-region
hydroxy-functionalized
PAHs
via
TEMPO-mediated
twofold
intramolecular
C-H/C-H
arylations
1-biphenyl-2-yl-2-aryl-ethanone
derivatives.
This
achieves
high
yields
selectivity,
synthesizing
variety
PAH
frameworks,
including
pyrenes,
chrysenes,
benzo[
Organic Letters,
Год журнала:
2024,
Номер
26(13), С. 2580 - 2584
Опубликована: Март 25, 2024
This
study
presents
a
novel
approach
for
synthesizing
benzo[f]isoindole
dimers,
which
involves
cascade
cyclization
and
oxidative
radical
dimerization.
Our
method
allows
the
formation
of
up
to
five
carbon–carbon
bonds
in
single
reaction,
exhibiting
remarkable
diastereoselectivity
regioselectivity.
The
mechanism
regioselectivity
were
investigated
through
combination
experiments
calculations.
Angewandte Chemie,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 18, 2024
Abstract
We
report
here
a
novel
family
of
ylidic
P‐heteroarenes
(
P1
–
P6
),
structurally
featuring
unique
phosphonium
cyclopentadienylide
(P−Cp)‐fused
π‐skeletons
and
synthetically
prepared
via
an
unexpected
one‐pot
[2+3]/[3+3]
phospha‐annulation
reaction.
While
the
facile
modular
synthesis
allows
fine‐tuning
their
optical
absorptions
redox
properties,
single‐crystallographic
theoretical
analysis
these
further
reveal
that
fusion
P−Cp
moiety
leads
to
substantial
intramolecular
charge‐separated
features
with
high
character
values
up
84
%.
Benefitted
from
such
dipolar
structures,
not
only
stepwise
electrophilic
substitution
reaction
for
structural
π‐expansions,
but
also
exhibit
excellent
nonlinear
(NLO)
responses
limiting
(OL)
performances
comparable
or
exceed
those
C
60
.
As
model
compound,
persistent
radical‐anion
salt
P5a
was
through
chemical
reduction,
thus
offering
valuable
insights
into
electronic
structures
reduced
P‐ylidic
species.
Our
work
established
highly
efficient
synthetic
method
toward
new
P‐heteroarenes,
provide
fundamental
understanding
fused‐ring
P‐heterocycles
promising
NLO/OL
applications.
