Microporous
solids
are
famous
for
their
high
surface
area
and
pore
size
at
the
molecular
scale,
which
crucial
applications
of
adsorption,
separation
catalysis.
An
ideal
porous
solid
would
simultaneously
have
a
nanopores
with
desired
opening
size.
However,
due
to
uncontrollable
reaction
process
organic
frameworks
(POFs),
acquisition
such
is
still
technically
limited.
Herein,
we
reported
simple
but
platform-wide
partition
strategy
improve
porosity
aromatic
(PAFs)
in
two
aspects.
This
was
achieved
by
introducing
unit
flexible
linkage
segment
original
voids
PAFs
into
multiple
micropore
domains.
The
obtained
partitioning
130%-217%
increments
creation
extra
accessible
surfaces
while
pores
segmented
smaller
ones.
Notably,
showed
significantly
increased
adsorption
capacity
CO2
improved
area.
At
same
time,
narrowed
allowed
selective
capture
dye
molecules
differences.
Similar
parent
PAFs,
retained
stability
harsh
environments.
A
universal
will
be
an
important
step
improving
PAF
functions.
ACS Central Science,
Год журнала:
2024,
Номер
10(7), С. 1383 - 1395
Опубликована: Июнь 14, 2024
Spiro-OMeTAD
doped
with
lithium-bis(trifluoromethylsulfonyl)-imide
(Li-TFSI)
and
tertbutyl-pyridine
(t-BP)
is
widely
used
as
a
hole
transport
layer
(HTL)
in
n-i-p
perovskite
solar
cells
(PSCs).
based
PSCs
typically
show
poor
stability
owing
to
the
agglomeration
of
Li-TFSI,
migration
lithium
ions
(Li+),
existence
potential
mobile
defects
originating
from
layer.
Thus,
it
necessary
search
for
strategy
that
suppresses
degradation
overcomes
Shockley
Queisser
efficiency
limit
via
harvesting
excess
energy
hot
charge
carrier.
Herein,
two
covalent
organic
frameworks
(COFs)
including
BPTA-TAPD-COF
well-defined
donor–acceptor
COF
(BPTA-TAPD-COF@TCNQ)
were
developed
incorporated
into
HTL.
BPTA-TAPD-COF@TCNQ
could
act
multifunctional
additives
HTL,
which
improve
photovoltaic
performance
PSC
device
by
accelerating
charge-carrier
extraction,
suppressing
Li+
Li-TFSI
agglomeration,
capturing
defects.
Benefiting
increased
conductivity,
addition
led
highest
power
conversion
24.68%
long-term
harsh
conditions.
This
work
provides
an
example
using
COFs
HTL
enable
improvements
both
PSCs.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(42)
Опубликована: Июль 15, 2024
Abstract
Non‐radiative
recombination,
caused
by
trap
states,
significantly
hampers
the
efficiency
and
stability
of
perovskite
solar
cells
(PSCs).
The
emerging
porous
organic
polymers
(POPs)
show
promise
as
a
platform
for
designing
novel
defect
passivation
agents
due
to
their
rigid
structure.
However,
POPs
reported
so
far
lack
either
sufficient
or
clear
sites
interactions
with
defects.
Herein,
two
chlorine‐functionalized,
fully
conjugated
aromatic
frameworks
(PAFs)
were
constructed
via
decarbonylation
reaction.
chlorinated
PAFs
feature
unique
long‐range
networks
bearing
multiple
chlorine
atoms,
improving
photovoltaic
performance
doped
cells.
Combined
experimental
theoretical
analyses
confirmed
strong
effects
structure
through
Cl
sites.
Specifically,
PAF‐159,
triphenylamine
moiety,
demonstrated
stronger
Cl−Pb
bonding
higher
presence
π*
anti‐bonding
orbitals,
which
elevate
HOMO
energy
level
facilitate
charge
transfer.
Consequently,
we
obtained
high‐performance
PAF‐159‐doped
devices
advanced
PCE
(24.3
%),
good
storage
(retaining
86
%
after
3000
hours),
long‐term
operational
92
350
hours).
European Journal of Inorganic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 18, 2024
Abstract
In
this
contribution,
a
new
Schiff‐base
hybrid
cross‐linked
polymer
(TFPT‐SHCP)
derived
from
triazine
derivatives
and
silsesquioxanes
was
developed,
its
photocatalytic
performance
systematically
investigated.
Compared
with
traditional
organic
Schiff
base
catalysts,
in
TFPT‐SHCP,
inorganic
monomers
at
the
molecular
level
can
serve
as
sturdy
host
backbone,
bringing
structural
ultrastability
to
final
material.
And
their
excellent
strength
durability
make
them
have
good
application
prospects
water
treatment.
Furthermore,
introduction
of
photoelectric
construction
−C=N‐
result
TFPT‐SHCP.
The
as‐prepared
TFPT‐SHCP
exhibits
degradation
capacity
various
pollutants
under
visible
light
catalysis,
rate
constants
for
Congo
Red
(CR),
rhodamine
B
(RB)
tetracycline
hydrochloride
(TH)
reaching
0.302
min
−1
,
0.121
0.161
respectively.
Under
simulated
outdoor
conditions,
dye
solutions
concentrations
up
500
ppm
be
degraded
complete
decolorization
within
5
weeks.
This
work
demonstrates
enormous
potential
POSS‐based
materials
platform
paving
way
pre
design
functionalization
related
future.
Microporous
solids
are
famous
for
their
high
surface
area
and
pore
size
at
the
molecular
scale,
which
crucial
applications
of
adsorption,
separation
catalysis.
An
ideal
porous
solid
would
simultaneously
have
a
nanopores
with
desired
opening
size.
However,
due
to
uncontrollable
reaction
process
organic
frameworks
(POFs),
acquisition
such
is
still
technically
limited.
Herein,
we
reported
simple
but
platform-wide
partition
strategy
improve
porosity
aromatic
(PAFs)
in
two
aspects.
This
was
achieved
by
introducing
unit
flexible
linkage
segment
original
voids
PAFs
into
multiple
micropore
domains.
The
obtained
partitioning
130%-217%
increments
creation
extra
accessible
surfaces
while
pores
segmented
smaller
ones.
Notably,
showed
significantly
increased
adsorption
capacity
CO2
improved
area.
At
same
time,
narrowed
allowed
selective
capture
dye
molecules
differences.
Similar
parent
PAFs,
retained
stability
harsh
environments.
A
universal
will
be
an
important
step
improving
PAF
functions.
