Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
Abstract
Incorporation
of
heteroatoms
and/or
non‐hexagonal
rings
into
polycyclic
aromatic
hydrocarbons
(PAHs)
can
alter
their
intrinsic
structures
and
physical
properties.
However,
it
is
challenging
to
construct
PAHs
featuring
boron/carbon
composition
combination.
Herein,
we
disclose
the
selective
synthesis
spiro‐type
pentagon/heptagon‐containing
boron‐doped
π‐systems
by
Scholl
reaction.
Two
spiro‐fused
organoboranes
1
2
one
575‐ringed
nanographene
3
were
synthesized.
The
key
point
that
boron‐edged
π‐system
enabled
unexpected
spiro‐formation
via
dearomatization,
whereas
boron‐centered
desired
π‐extension
cyclodehydrogenation.
thus‐obtained
molecules
exhibit
intriguing
but
fully
distinct
reactivity,
electronic
properties,
for
instance,
while
may
react
with
Brønsted
acid
display
reversible
chemochromism
further
convert
,
possesses
very
broad
absorption,
short
excited‐state
lifetime
no
fluorescence
nature.
As
disclosed,
boron
atom
together
spirocycle
region
or
structural
motif
significantly
contribute
characteristic
Thus,
this
study
sheds
light
on
control
over
reaction
using
organoborane
will
promote
exploration
more
sophisticated
as
organic
reactive
optical
scaffolds.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(12), P. 8659 - 8667
Published: Feb. 26, 2024
The
solid-state
synthesis
of
single-crystalline
organic
polymers,
having
functional
properties,
remains
an
attractive
and
developing
research
area
in
polymer
chemistry
materials
science.
However,
light-triggered
topochemical
crystalline
polymers
comprising
organoboron
backbone
has
not
yet
been
reported.
Here,
we
describe
intriguing
example
single-crystal-to-single-crystal
(SCSC)
rapid
photosynthesis
(occurs
on
a
seconds-scale)
two
structurally
different
linear
driven
by
environmentally
sustainable
visible/sun
light,
obtained
from
the
same
monomer
molecule.
A
newly
designed
Lewis
acid-base
type
molecular
B
←
N
adduct
(consisting
core
naphthylvinylpyridine
ligands)
crystallizes
forms
featuring
chemical
structure
but
3D
structural
topologies,
namely,
monomers
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 10, 2024
Abstract
Growing
single
crystals
of
covalent
organic
polymers
(COPs)
for
single‐crystal
X‐ray
diffraction
analysis
is
very
important
and
highly
desirable
because
such
strategy
provides
a
deep
understanding
crystallization
kinetics
the
structure‐property
relationship
COPs.
Based
on
that
dynamic
bonds
can
allow
self‐correction
structures
during
crystal
growth,
two
COPs
(
CityU‐15
CityU‐16
)
based
dative
boron‐nitrogen
(B─N)
have
been
successfully
obtained.
Detailly,
tetra(4‐pyridyl)tetrathiafulvalene
(TTF(py)
4
tetra(4‐pyridyl)porphine
(TPYP)
are
employed
as
N‐donor
ligands
to
react
with
1,4‐bis(benzodioxaborole)
benzene
prepare
COPs,
named
,
respectively.
exhibits
enhanced
stability
compared
size
reach
up
0.7
cm.
shows
good
recyclability
reveals
noticeable
photosensitivity
upon
iodine
doping.
After
treatment
iodine,
both
display
obvious
color
changes.
Specially,
device
I
2
‐treated
excellent
low‐voltage
operation
low
energy
consumption
3.3
fJ,
facilitating
development
artificial
vision.
This
work
highlights
successful
introduction
functional
groups
into
B‐N‐containing
opening
new
avenues
expanding
their
applications.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(23)
Published: April 8, 2024
Abstract
Vitrimers
offer
a
unique
combination
of
mechanical
performance,
reprocessability,
and
recyclability
that
makes
them
highly
promising
for
wide
range
applications.
However,
achieving
dynamic
behavior
in
vitrimeric
materials
at
their
intended
usage
temperatures,
thus
combining
reprocessability
with
adaptivity
through
associative
covalent
bonds,
represents
an
attractive
but
formidable
objective.
Herein,
we
couple
boron‐nitrogen
(B−N)
dative
bonds
B−O
to
generate
new
class
vitrimers,
vitrimers
(BNVs),
endow
features
temperatures.
Compared
boron‐ester
(BEVs)
without
B−N
the
BNVs
showcase
enhanced
performance.
The
excellent
properties
come
from
synergistic
effect
supramolecular
polymer
networks.
Moreover,
benefiting
exchange
above
topological
freezing
temperature
(
T
v
),
resultant
also
possess
processability.
This
study
leveraged
structural
characteristics
boron‐based
vitrimer
achieve
material
reinforcement
toughness
enhancement,
simultaneously
providing
novel
design
concepts
construction
materials.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(23)
Published: April 8, 2024
Abstract
Vitrimers
offer
a
unique
combination
of
mechanical
performance,
reprocessability,
and
recyclability
that
makes
them
highly
promising
for
wide
range
applications.
However,
achieving
dynamic
behavior
in
vitrimeric
materials
at
their
intended
usage
temperatures,
thus
combining
reprocessability
with
adaptivity
through
associative
covalent
bonds,
represents
an
attractive
but
formidable
objective.
Herein,
we
couple
boron‐nitrogen
(B−N)
dative
bonds
B−O
to
generate
new
class
vitrimers,
vitrimers
(BNVs),
endow
features
temperatures.
Compared
boron‐ester
(BEVs)
without
B−N
the
BNVs
showcase
enhanced
performance.
The
excellent
properties
come
from
synergistic
effect
supramolecular
polymer
networks.
Moreover,
benefiting
exchange
above
topological
freezing
temperature
(
T
v
),
resultant
also
possess
processability.
This
study
leveraged
structural
characteristics
boron‐based
vitrimer
achieve
material
reinforcement
toughness
enhancement,
simultaneously
providing
novel
design
concepts
construction
materials.
ChemistryEurope,
Journal Year:
2024,
Volume and Issue:
2(2)
Published: Feb. 6, 2024
Abstract
While
certain
inorganic
main‐group
polymers
such
as
silicones
(polysiloxanes)
are
ubiquitous
in
our
everyday
life,
poly(iminoborane)s
have
been
elusive
for
a
long
time.
Incorporation
of
heterocyclic
building
blocks
into
their
backbone
has
recently
enabled
access
to
the
first
derivatives
this
inorganic‐polymer
class,
approach
effectively
prevents
undesired
side‐reactions
borazines.
Information
about
microstructure
these
cyclolinear
macromolecules,
however,
scarce.
Herein,
we
present
synthesis
series
monodisperse
oligomers
with
up
7
boron
and
8
nitrogen
atoms,
representing
longest
well‐defined
molecular
[>B=N<]
x
chain
date.
We
accomplished
characterize
six
them
structurally
solid
state
by
single‐crystal
X‐ray
diffraction,
thus
providing
valuable
insight
poly(iminoborane)s.
In
addition,
report
on
new
poly(iminoborane)
featuring
aryl
side
groups,
an
increased
content
unsubstituted
phenyl
groups.
The
p
‐(
n
‐butyl)phenyl‐substituted
species
13
represents
highest‐molecular‐weight
sample
class
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(38), P. 15745 - 15750
Published: Jan. 1, 2024
The
powerful
PPNCl
catalyst
can
be
converted
into
a
recyclable
and
more
soluble
polymeric
version
through
post-polymerisation
modification
of
triphenylphosphine-decorated
copolymer.
Chinese Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 25, 2024
Comprehensive
Summary
As
a
class
of
organic
dyes,
boron‐containing
compounds
play
an
important
role
in
luminescent
materials.
They
have
attracted
considerable
attention
due
to
their
unique
photophysical
properties.
Chiral
systems
wide
range
practical
applications
biological
imaging,
optoelectronic
devices,
information
storage
and
3D
display.
Boron‐containing
chiral
materials
can
not
only
effectively
improve
the
properties
CPL
materials,
but
also
bring
system,
which
enables
them
be
used
as
favorable
emitting
for
expanded
applications.
Here,
we
review
research
progress
by
detailed
discuss
according
different
skeletons,
such
point
chirality,
1,1’‐binaphthyl,
[
n
]helicenes,
[2,2]paracyclophane
pillar[5]arenes.
We
believe
that
this
is
significance
development
Key
Scientists
The
studies
circularly
polarized
luminescence
(CPL)
based
on
small
molecules
advanced
significantly.
However,
gained
recent
years.
In
2019,
Zhao's
group
prepared
binaphthalene
derivative
modified
with
triarylborane,
representing
molecule
material
exhibit
characteristics
responsive
both
solvent
fluoride
ions.
2020,
Chen's
steric
effects
triarylborane
triphenylamine
prepare
planar
2021,
Wang's
developed
new
B,N‐embedded
double
hetero[7]helicenes
strong
chiroptical
responses
UV‐visible
region.
same
year,
He's
asymmetric
reactions
synthesize
boron‐based
point‐chirality
high
efficiency
enantioselectivity.
2023,
Ravat
synthesized
1,4‐B,N‐embedded
helicenes
exhibiting
narrow‐band
fluorescence
CPL.
During
period,
Matthias
Wagner
et
al
obtained
(BO)
2
‐doped
tetrathia[7]helicene
via
efficient
four‐step
synthesis,
Zheng
reported
nearly
pure
green
electroluminescent
device
(CP‐OLED).
2024,
hetero‐[9]helicenes
offering
pathway
towards
significantly
enhanced
helicene‐based
CPEL.
Crystal Growth & Design,
Journal Year:
2024,
Volume and Issue:
24(14), P. 5883 - 5888
Published: June 26, 2024
Separations
of
azeotropic
mixtures
are
typically
carried
out
using
energy-demanding
processes
(e.g.,
distillation).
Here,
we
report
the
capacity
a
self-assembled
chlorinated
boronic
ester-based
adduct
to
confine
acetonitrile
and
benzene
in
channels
upon
crystallization.
The
solvent
confinement
occurs
via
combination
hydrogen
bonding
[π···π]
interactions.
Quantitative
separation
from
an
1:1
mixture
benzene/acetonitrile
(v/v),
methanol
is
achieved
through
crystallization
with
by
complementary
[C–H···O]
[C–H···π]
Inclusion
behavior
rationalized
molecular
modeling
crystallographic
analysis.
ester
shows
potential
modularity
isosteric
substitution
for
challenging
chemical
azeotropes).