Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 28, 2024
Traditional
desalination
methods
face
criticism
due
to
high
energy
requirements
and
inadequate
trace
ion
removal,
whereas
natural
light-driven
pumps
offer
superior
efficiency.
Current
synthetic
systems
are
constrained
by
short
exciton
lifetimes,
which
limit
their
ability
generate
sufficient
electric
fields
for
effective
pumping.
We
introduce
an
innovative
approach
utilizing
covalent-organic
framework
membranes
that
enhance
light
absorption
reduce
charge
recombination
through
vertical
gradient
protonation
of
imine
linkages
during
acid-catalyzed
liquid-liquid
interfacial
polymerization.
This
technique
creates
intralayer
interlayer
heterojunctions,
facilitating
hybridization
establishing
a
robust
built-in
field
under
illumination.
These
improvements
enable
the
achieve
remarkable
transport
across
extreme
concentration
gradients
(2000:1),
with
rate
approximately
3.2
×
10
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 10, 2025
Abstract
Nanofluidic
photoelectric
conversion
system
based
on
photo‐excitable
2D
materials
can
directly
transduce
light
stimuli
into
an
ion‐transport‐mediated
electric
signal,
showing
potential
for
mimicking
the
retina's
function
with
a
more
favorable
human–robot
interactions.
However,
current
membranes
suffer
from
low
generation
efficiency
of
charge
carriers
due
to
mixed
microstructure
and
limited
transport
ability
caused
by
large
interlayer
spacing
monotonous
pathway.
Here,
fully
conjugated
hexaimino‐substituted
triphenylene‐based
metal–organic
framework
(2D‐HATP‐cMOF)
composite
membrane
high
conductivity
is
presented.
The
extended
π‐d
conjugation
within
ab
plane
pathway
through
π–π
stacking
c‐MOF
maximize
transfer
carrier
greatly
accelerate
ion
transport.
As
result,
2D‐HATP‐cMOF‐based
possesses
ultrafast
response,
superior
other
reported
systems
like
graphene
oxide
(GO),
transition
metal
carbides,
carbonitrides
nitrides
(MXene),
MoS
2
,
which
require
at
least
10
s.
A
successful
pump
phenomenon,
that
active
concentration
as
important
way
information
transmission
in
organisms,
realized
efficient
capability.
This
work
demonstrates
great
promise
ionic
conversion.
Reports on Progress in Physics,
Journal Year:
2024,
Volume and Issue:
87(12), P. 126401 - 126401
Published: Nov. 5, 2024
Abstract
Superscattering,
theoretically
predicted
in
2010
and
experimentally
observed
2019,
is
an
exotic
scattering
phenomenon
of
light
from
subwavelength
nanostructures.
In
principle,
superscattering
allows
for
arbitrarily
large
total
cross
section,
due
to
the
degenerate
resonance
eigenmodes
or
channels.
Consequently,
section
a
superscatterer
can
be
significantly
enhanced,
far
exceeding
so-called
single-channel
limit.
Superscattering
offers
unique
avenue
enhancing
light–matter
interactions
enable
numerous
practical
applications,
ranging
sensing,
trapping,
bioimaging,
communications
optoelectronics.
This
paper
provides
comprehensive
review
recent
progress
developments
light,
with
specific
focus
on
elucidating
its
theoretical
origins,
experimental
observations,
manipulations.
Moreover,
we
offer
outlook
future
research
directions
superscattering,
including
potential
realizations
directional
scattering-free
plasmonic
enhancement
free-electron
radiation
Purcell
effect
via
superscatterers,
inelastic
non-electromagnetic
waves.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 13, 2025
Abstract
Charged
covalent
organic
framework
(COF)
membranes
have
gained
wide
interest
as
the
key
component
in
reverse
electrodialysis
technique
to
harness
salinity
energy.
However,
maintaining
rapid
ion
transport
and
high
selectivity
a
Ca
2+
‐rich
environment
remains
formidable
challenge.
Herein,
highly
cation‐conductive
azine
COF
membrane
is
synthesized
via
layer‐by‐layer
chemical
reaction
between
2,4‐dihydroxy‐1,3,5‐diphenyltrialdehyde
(DHTA)
hydrazine
hydrate
(HZ).
The
osmotic
energy
generator
based
on
this
delivers
power
density
of
17.8
W
m
−2
under
2.5
M/0.05
M
CaCl
2
,
outperforming
TFP‐HZ
(3.2
),
commercial
benchmark
(5
other
literature
reported
owing
simultaneous
modulation
charges
angstrom
scale
channels
selective
layer
thickness.
Moreover,
comparable
that
NaCl
gradient
(2.5
M,
16.9
which
rare.
These
results
indicate
DHTA‐HZ
suitable
for
application
hypersaline
environments
containing
serving
an
inspiration
development
COF‐based
nanofluidic
with
output
efficiency
practical
high‐salinity
environment.
