Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Март 10, 2024
Abstract
Covalent
organic
frameworks
(COFs)
attract
significant
attention
due
to
their
ordered,
crystalline,
porous,
metal‐free,
and
predictable
structures.
These
unique
characteristics
offer
great
opportunities
for
the
diffusion
transmission
of
photogenerated
charges
during
photocatalysis.
Currently,
a
considerable
number
COFs
are
used
as
metal‐free
semiconductor
photocatalysts.
This
review
aims
understand
relationships
between
structure
photocatalysis
performance
provides
in‐depth
insight
into
synthetic
strategy
improve
performance.
Subsequently,
focuses
on
structural
motif
in
sustainable
photocatalytic
hydrogen
evolution,
carbon
dioxide
reduction,
peroxide
generation,
compound
transformations.
Last,
conjunction
with
progress
achieved
challenges
yet
be
overcome,
candid
discussion
is
undertaken
regarding
field
COF
photocatalysis,
accompanied
by
presentation
potential
research
avenues
future
directions.
seeks
provide
readers
comprehensive
understanding
pivotal
role
robust
guidance
innovative
utilization
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(40)
Опубликована: Июль 18, 2024
Abstract
The
integration
of
electron
donor
(D)
and
acceptor
(A)
units
into
covalent
organic
frameworks
(COFs)
has
received
increasing
interest
due
to
its
potential
for
efficient
photocatalytic
hydrogen
(H
2
)
evolution
from
water.
Nevertheless,
the
advancement
D–A
COFs
is
still
constrained
by
limited
investigations
on
engineering,
which
enables
highly
effective
charge
transfer
pathways
in
deliver
photoexcited
electrons
a
preferential
orientation
enhance
performance.
Herein,
two
systems
with
D–A–A
configurations
based
molecular
engineering
strategy
are
proposed
construct
three
distinct
COFs.
Specifically,
TAPPy‐DBTDP‐COF
merging
one
pyrene‐based
benzothiadiazole
acceptors
realized
an
average
H
rate
12.7
mmol
h
−1
g
under
visible
light,
among
highest
ever
reported
typical
D–A‐type
COF
systems.
combination
experimental
theoretical
analysis
signifies
crucial
role
dual‐acceptor
arrangement
promoting
exciton
dissociation
carrier
migration.
These
findings
underscore
significant
structural
design,
conducive
separation
holes
resulting
superior
activities.
Nano Letters,
Год журнала:
2024,
Номер
24(18), С. 5444 - 5452
Опубликована: Апрель 19, 2024
We
report,
for
the
first
time,
a
new
synthetic
strategy
preparation
of
crystalline
two-dimensional
olefin-linked
covalent
organic
frameworks
(COFs)
based
on
aldol
condensation
between
benzodifurandione
and
aromatic
aldehydes.
Olefin-linked
COFs
can
be
facilely
crystallized
through
either
pyridine-promoted
solvothermal
process
or
benzoic
anhydride-mediated
flux
synthesis.
The
resultant
COF
leaf
with
high
in-plane
π-conjugation
exhibits
efficient
visible-light-driven
photoreduction
carbon
dioxide
(CO
Advanced Materials,
Год журнала:
2024,
Номер
36(37)
Опубликована: Март 29, 2024
2D
conjugated
polymers
(2DCPs)
possess
extended
in-plane
π-conjugated
lattice
and
out-of-plane
π-π
stacking,
which
results
in
enhanced
electronic
performance
potentially
unique
band
structures.
These
properties,
along
with
predesignability,
well-defined
channels,
easy
postmodification,
order
structure
attract
extensive
attention
from
material
science
to
organic
electronics.
In
this
review,
the
recent
advance
interfacial
synthesis
conductivity
tuning
strategies
of
2DCP
thin
films,
as
well
their
application
electronics
is
summarized.
Furthermore,
it
shown
that,
by
combining
topology
design
targeted
adjustment,
researchers
have
fabricated
films
predesigned
active
groups,
highly
ordered
structures,
conductivity.
exhibit
great
potential
for
various
thin-film
electronics,
such
transistors,
memristors,
electrochromism,
chemiresistors,
photodetectors.
Finally,
future
research
directions
perspectives
2DCPs
are
discussed
terms
synthetic
engineering
fabrication
fully
functional
manipulation
applications
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(15)
Опубликована: Фев. 19, 2024
Abstract
Developing
artificial
enzymes
based
on
organic
molecules
or
polymers
for
reactive
oxygen
species
(ROS)‐related
catalysis
has
broad
applicability.
Herein,
inspired
by
porphyrin‐based
heme
mimics,
we
report
the
synthesis
of
polyphthalocyanine‐based
conjugated
(Fe‐PPc‐AE)
as
a
new
porphyrin‐evolving
structure
to
serve
efficient
and
versatile
augmented
catalysis.
Owing
structural
advantages,
such
enhanced
π‐conjugation
networks
π‐electron
delocalization,
promoted
electron
transfer,
unique
Fe−N
coordination
centers,
Fe‐PPc‐AE
showed
more
ROS‐production
activity
in
terms
Vmax
turnover
numbers
compared
with
(Fe‐PPor‐AE),
which
also
surpassed
reported
state‐of‐the‐art
their
activity.
More
interestingly,
changing
reaction
medium
substrates,
revealed
significantly
improved
environmental
adaptivity
many
other
ROS‐related
biocatalytic
processes,
validating
potential
replace
conventional
(poly)porphyrin‐based
mimics
catalysis,
biosensors,
biotherapeutics.
It
is
suggested
that
this
study
will
offer
essential
guidance
designing
polymers.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(47), С. 32161 - 32205
Опубликована: Ноя. 18, 2024
Covalent
organic
frameworks
(COFs)
are
created
by
the
condensation
of
molecular
building
blocks
and
nodes
to
form
two-dimensional
(2D)
or
three-dimensional
(3D)
crystalline
frameworks.
The
diversity
with
different
properties
functionalities
large
number
possible
framework
topologies
open
a
vast
space
well-defined
porous
architectures.
Besides
more
classical
applications
materials
such
as
absorption,
separation,
catalytic
conversions,
interest
in
optoelectronic
COFs
has
recently
increased
considerably.
electronic
both
their
linkage
chemistry
can
be
controlled
tune
photon
absorption
emission,
create
excitons
charge
carriers,
use
these
carriers
photocatalysis,
luminescence,
chemical
sensing,
photovoltaics.
In
this
Perspective,
we
will
discuss
relationship
between
structural
features
properties,
starting
connectivity,
layer
stacking
2D
COFs,
control
over
defects
morphology
including
thin
film
synthesis,
exploring
theoretical
modeling
structural,
electronic,
dynamic
discussing
recent
intriguing
focus
on
photocatalysis
photoelectrochemistry.
We
conclude
some
remarks
about
present
challenges
future
prospects
powerful
architectural
paradigm.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 27, 2024
Abstract
Photocatalysis
leverages
solar
energy
to
overcome
the
thermodynamic
barrier,
enabling
efficient
chemical
reactions
under
mild
conditions.
It
can
greatly
reduce
reliance
on
traditional
sources
and
has
attracted
significant
research
interest.
Reticular
materials,
including
metal‐organic
frameworks
(MOFs)
covalent
organic
(COFs),
represent
a
class
of
crystalline
materials
constructed
from
molecular
building
blocks
linked
by
coordination
bonds,
respectively.
function
as
heterogeneous
catalysts,
combining
well‐defined
structures
high
tailorability
akin
homogeneous
catalysts.
In
this
review,
regulation
light
absorption,
charge
separation,
surface
in
photocatalytic
process
through
precise
molecular‐level
design
based
features
reticular
is
elaborated.
Notably,
for
MOFsmicroenvironment
modulation
around
catalytic
sites
affects
performance
delved,
with
emphasis
their
unique
dynamic
flexible
microenvironments.
For
COFs,
inherent
excitonic
effects
due
fully
nature
discussed
highlight
strategies
regulate
charge‐
and/or
energy‐transfer‐mediated
photocatalysis.
Finally,
current
challenges
future
directions
field,
aiming
provide
comprehensive
understanding
how
be
optimized
enhanced
photocatalysis
discussed.
