Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(11), С. 6663 - 6670
Опубликована: Янв. 1, 2024
A
salt-resistant
solar
evaporator
featuring
capillary
action
enabled
by
loading
organic
photothermal
materials
onto
a
biomass
substrate
is
designed
and
prepared.
The
resulting
exhibits
high
solar-to-vapor
efficiency
efficient
persistent
water
evaporation
without
salt
accumulation.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(25), С. 17084 - 17093
Опубликована: Июнь 11, 2024
Boraphenalenes,
compounds
in
which
one
carbon
atom
the
phenalenyl
skeleton
is
replaced
with
a
boron
atom,
have
attracted
attention
for
their
solid-state
and
electronic
structures;
however,
construction
of
boraphenalene
skeletons
remains
challenging
because
lack
suitable
methods.
Through
this
study,
we
showed
that
tandem
borylative
cyclization
C3-symmetric
dehydrobenzo[12]annulenes
produces
new
class
fully
fused
boron-atom-embedded
polycyclic
hydrocarbons
possessing
9b-boraphenalene
skeleton.
The
obtained
exhibited
high
electron-accepting
characteristics,
two-step
redox
process
was
reversible
reductive
region,
involving
interconversion
between
Hückel
aromaticity
antiaromaticity.
Notably,
benzo[b]fluorene-fused
derivative
stepwise
single-crystal-to-single-crystal
(SCSC)
phase
transition
triggered
by
thermal
annealing.
Intermolecular
electron
coupling
calculation
crystal
structures
suggested
significant
improvement
charge
transporting
ability
associated
SCSC
transition.
Moreover,
adequate
photoconductivity
observed
single
crystals
before
after
through
flash
photolysis-time-resolved
microwave
conductivity.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(13), С. 9004 - 9011
Опубликована: Март 19, 2024
Herein,
we
report
the
syntheses
and
electronic
structures
of
crystalline
dianionic
as
well
neutral
diboron-centered
classical
diradicaloids
boron
analogues
Thiele,
Chichibabin,
Müller
(this
only
for
diradicaloids!)
hydrocarbons.
These
are
based
on
borane
radical
anion
NHC-stabilized
boryl
spin
carriers,
respectively.
All
these
exhibit
triplet
population
at
room
temperature
regardless
π-conjugated
spacer:
p-phenylene,
p,p′-biphenylene,
or
p,p″-terphenylene.
In
case
diradicaloids,
employed
spacer
plays
a
crucial
role
temperature:
EPR
inactive
p-phenylene
vs
active
p,p′-biphenylene.
The
findings
emphasize
importance
carriers
resulting
ground-state:
along
with
pivotal
spin-coupler
between
two
spins.
Notably,
100
years
(a
century)
after
first
by
Krause
triphenyl
radical-anion,
being
isoelectronic
to
triphenylmethyl
radical,
convey
anion-based
diradicaloids.
Furthermore,
while
donor-stabilized
radicals
were
introduced
in
1980s
Giles
Roberts,
said
concept
is
herewith
extended
radical-based
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(22)
Опубликована: Апрель 1, 2024
Abstract
Embedding
two
boron
atoms
into
a
polycyclic
aromatic
hydrocarbon
(PAH)
leads
to
the
formation
of
neutral
analogue
that
is
isoelectronic
corresponding
dicationic
PAH
skeleton,
which
can
significantly
alter
its
electronic
structure.
Based
on
this
concept,
we
explore
herein
identification
near‐infrared
(NIR)‐emissive
PAHs
with
aid
an
in
silico
screening
method.
Using
perylene
as
scaffold,
embedded
and
fused
thiophene
rings
it.
design
all
possible
structures
(ca.
2500
entities)
were
generated
using
comprehensive
structure
generator.
Time‐dependent
DFT
calculations
conducted
these
structures,
promising
candidates
extracted
based
vertical
excitation
energy,
transition
dipole
moment,
atomization
energy
per
bond.
One
dithieno‐diboraperylene
was
synthesized
indeed
exhibited
emission
at
724
nm
quantum
yield
0.40
toluene,
demonstrating
validity
This
modification
further
applied
other
PAHs,
series
thienobora‐modified
synthesized.
Chemical Science,
Год журнала:
2024,
Номер
15(33), С. 13351 - 13358
Опубликована: Янв. 1, 2024
Two
isomeric
molecules
are
synthesized
with
varied
sulfur
atom
positions.
TBP–MPA
exhibits
aggregation-induced
photothermal
enhancement
due
to
S⋯N
non-covalent
interactions,
providing
extra
non-radiative
transition
channels
in
the
aggregated
state.
Abstract
Organic
radicals
exhibit
great
potential
in
photothermal
applications,
however,
their
innate
high
reactivity
with
oxygen
renders
the
preparation
of
stable
organic
highly
challenging.
In
this
work,
a
series
co‐doped
radical
polymers
ares
prepared
by
doping
dihydrophenazine
derivatives
(DPPs)
into
epoxy
resin
matrix.
DPPs
can
form
species
through
electron
transfer
process,
which
are
further
stabilized
complex
3D
network
structure
resin.
Experimental
results
show
that
conversion
efficiency
is
as
79.9%,
and
temperature
quickly
rise
to
≈130
°C
within
60
s.
Due
excellent
visible
light
transmittance
mechanical
properties
systems,
study
demonstrates
practical
applications
energy‐saving
solar
windows
thermoelectric
power
generation.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(38), С. 26454 - 26465
Опубликована: Сен. 10, 2024
Dimerization
of
delocalized
polycyclic
hydrocarbon
radicals
is
a
simple
and
versatile
method
to
create
diradicals
with
tailored
electronic
structures
accessible
high-spin
states.
However,
the
synthesis
challenging,
stability
issue
remains
concern.
In
this
study,
we
present
stable
non-Kekulé
1,1'-biolympicenyl
diradical
Angewandte Chemie,
Год журнала:
2024,
Номер
136(22)
Опубликована: Апрель 1, 2024
Abstract
Embedding
two
boron
atoms
into
a
polycyclic
aromatic
hydrocarbon
(PAH)
leads
to
the
formation
of
neutral
analogue
that
is
isoelectronic
corresponding
dicationic
PAH
skeleton,
which
can
significantly
alter
its
electronic
structure.
Based
on
this
concept,
we
explore
herein
identification
near‐infrared
(NIR)‐emissive
PAHs
with
aid
an
in
silico
screening
method.
Using
perylene
as
scaffold,
embedded
and
fused
thiophene
rings
it.
design
all
possible
structures
(ca.
2500
entities)
were
generated
using
comprehensive
structure
generator.
Time‐dependent
DFT
calculations
conducted
these
structures,
promising
candidates
extracted
based
vertical
excitation
energy,
transition
dipole
moment,
atomization
energy
per
bond.
One
dithieno‐diboraperylene
was
synthesized
indeed
exhibited
emission
at
724
nm
quantum
yield
0.40
toluene,
demonstrating
validity
This
modification
further
applied
other
PAHs,
series
thienobora‐modified
synthesized.
n-Type
organic
conductive
molecules
play
a
significant
role
in
electronics.
Self-doping
can
increase
the
carrier
concentration
within
materials
to
improve
conductivity
without
need
for
additional
intentional
dopants.
This
review
focuses
on
various
strategies
employed
synthesis
of
self-doped
n-type
molecules,
and
provides
an
overview
doping
mechanisms.
By
elucidating
these
mechanisms,
aims
establish
relationship
between
molecular
structure
electronic
properties.
Furthermore,
outlines
current
applications
field
electronics,
highlighting
their
performance
potential
devices.
It
also
offers
insights
into
future
development
materials.
