Molecules,
Journal Year:
2024,
Volume and Issue:
29(3), P. 634 - 634
Published: Jan. 29, 2024
The
Photophysical
properties,
such
as
fluorescence
quenching,
and
photoexcitation
dynamics
of
bimolecular
non-covalent
systems
consisting
cationic
poly[(9,9-di(3,3′-N,N′-trimethyl-ammonium)
propyl
fluorenyl-2,7-diyl)-alt-co-(9,9-dioctyl-fluorenyl-2,7-diyl)]
diiodide
salt
(PFN)
anionic
graphene
carboxylate
(GC)
have
been
discovered
for
the
first
time
via
steady-state
time-resolved
femtosecond
transient
absorption
(TA)
spectroscopy
with
broadband
capabilities.
PFN
is
quenched
high
efficiency
by
GC
acceptor.
Fluorescence
lifetime
measurements
reveal
that
quenching
mechanism
static.
Here,
mechanisms
are
well
proven
TA
spectra
PFN/GC
systems.
For
systems,
photo
electron
transfer
(PET)
charge
recombination
(CR)
processes
ultrafast
(within
a
few
tens
ps)
compared
to
static
interactions,
whereas
PFN/1,4-dicyanobenzene
DCB
PET
takes
place
in
hundreds
ps
(217.50
ps),
suggesting
diffusion-controlled
process.
In
latter
case,
PFN+•–DCB−•
radical
ion
pairs
result
from
clearly
resolved,
they
long-lived.
slow
CR
process
(in
30
ns
scales)
suggests
PFN+•
DCB−•
may
already
form
separated
through
separation
(CS)
process,
which
recombine
back
initial
state
characteristic
constant
ns.
advantage
present
positively
charged
polyfluorene
used
this
work
control
over
electrostatic
interactions
transfers
polyfluorene/quencher
DMSO
solution.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(11), P. 14082 - 14092
Published: March 5, 2024
Flexible
and
room-temperature
(RT)
ammonia
gas
sensors
are
needed
for
exhaled
breath
detection
recognition.
Two-dimensional
transition
metal
disulfides
potential
materials
RT
sensing
because
of
their
low
band
gap
a
large
number
edge-exposed
sites
that
can
provide
strong
binding
to
molecules.
In
this
work,
1D/2D
heterostructured
composite
material
2D
tungsten
disulfide
(WS2)
modified
with
1D
polyaniline
(PANI)
was
proposed.
The
fibrous
PANI
adsorbed
on
the
edges
inserted
in
interlayers
laminated
WS2
more
diffusion
channels
act
as
sites.
WS2@PANI-based
sensor
shows
high
selectivity
satisfying
reproducibility
long-term
stability.
A
response
216.3%
short
response/recovery
time
25
s/39
s
were
achieved
100
ppm
gas.
mechanism
investigated
detail
via
complex
impedance
spectra
situ
FT-IR,
which
attributed
synergistic
effect
PANI.
excellent
performance
coupled
its
resistance
thermal
humidity
interference
endows
human
wearable
electronics.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(29)
Published: Feb. 8, 2024
Abstract
Four
donor‐acceptor
(D‐A)
polymers
are
synthesized
by
combining
two
different
electron
donors
(truxene
and
its
more
rich
triaza
analogue,
triindole)
with
an
electron‐deficient
monomer
(benzothiadiazole)
through
positions
(2,7,13
or
3,8,13)
their
optoelectronic
properties
studied
theoretical
experimental
methods.
One
of
the
exhibits
remarkable
sensing
capabilities
for
explosive
nitraoaromatics
while
another
demonstrated
efficient
photocatalytic
activity
in
aerobic
sulfoxidation
sulfur
mustard
simulant
2‐chloro‐ethyl
ethyl
sulfide
(MGS)
sulfoxidation.
These
results
highlight
potential
applications
defense‐related
areas.
Moreover,
structure‐performance
relationships
observed
among
four
have
enabled
us
to
deepen
understanding
mechanisms
underlying
performance
these
aforementioned
applications,
thereby
providing
valuable
insights
further
improve
properties.
ACS Applied Materials & Interfaces,
Journal Year:
2025,
Volume and Issue:
17(2), P. 4033 - 4043
Published: Jan. 6, 2025
The
sensitive
and
selective
identification
of
nitroaromatic
explosives
industrially
ubiquitous
nitrates,
which
are
harmful
to
the
environment,
is
crucial
from
viewpoints
security
environmental
remediation.
New
multifunctional
fluorescent
porous
materials
that
can
sense
nitro-explosives
nitrates
under
continuous
development.
To
this
end,
study
synthesizes
3,10,15-/-3,10,16-tribromotrinaphtho[3.3.3]propellane
(TBP)
4,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,1,3-benzothiadiazole
(BB)
employs
them
as
dual
building
blocks
prepare
a
conjugated
microporous
polymer
(denoted
CMP–TBP–BB)
via
Suzuki–Miyaura
borylation
polycondensation.
CMP–TBP–BB
synthesis
strategy
takes
advantage
donor
acceptor
characteristics
propeller-like
trinaphtho[3.3.3]propellane
moiety
in
TBP
benzothiadiazole
group
BB,
respectively.
unusual
two-dimensional
conformation
CMP
with
propeller–array-structured
monomers
helps
position
π
components
crystalline
layers
establishes
aligned
conduction
pathways.
exhibits
outstanding
fluorescence
characteristics.
Its
distinctive
skeleton
exploited
fabricate
highly
donor–acceptor
blocks,
typically
considered
challenging
task.
acts
sensor
for
selectively
sensitively
detecting
electron-deficient
metal
nitrates.
Specifically,
responsive
2,4,6-trinitrophenol
Fe(NO3)3
at
parts
per
million
levels,
results
combined
experimental
theoretical
investigations
its
sensing
properties
highlight
potential
CMP-based
probe.
Additionally,
dual-function
probe
remarkable
temperature-sensing
behavior
owing
high
linearity
between
intensity
temperature,
making
it
an
excellent
thermometer.
Carbon Energy,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 20, 2025
ABSTRACT
Carbon
electrocatalyst
materials
based
on
lignocellulosic
biomass
with
multi‐components,
various
dimensions,
high
carbon
content,
and
hierarchical
morphology
structures
have
gained
great
popularity
in
electrocatalytic
applications
recently.
Due
to
the
catalytic
deficiency
of
neutral
atoms,
usage
single
lignocellulosic‐based
electrocatalysis
involving
energy
storage
conversion
presents
unsatisfactory
applicability.
However,
atomic‐level
modulation
lignocellulose‐based
can
optimize
electronic
structures,
charge
separation,
transfer
processes,
so
forth,
which
results
substantially
enhanced
performance
carbon‐based
catalysts.
This
paper
reviews
recent
advances
rational
design
as
electrocatalysts
from
an
perspective,
such
self/external
heteroatom
doping
metal
modification.
Then,
through
systematic
discussion
principles
reaction
mechanisms
catalysts,
prepared
catalysts
rechargeable
batteries
are
reviewed.
Finally,
challenges
improving
prospects
diverse
review
contributes
synthesis
strategy
via
modulation,
turn
promotes
lignocellulose
valorization
for
conversion.
Macromolecular Rapid Communications,
Journal Year:
2024,
Volume and Issue:
45(10)
Published: Feb. 26, 2024
Abstract
Chemical
sensing
of
harmful
species
released
either
from
natural
or
anthropogenic
activities
is
critical
to
ensuring
human
safety
and
health.
Over
the
last
decade,
conjugated
microporous
polymers
(CMPs)
have
been
proven
be
potential
sensor
materials
with
possibility
realizing
devices
for
practical
applications.
CMPs
found
unique
among
other
porous
such
as
metal–organic
frameworks
(MOFs)
covalent
organic
(COFs)
due
their
high
chemical/thermal
stability,
surface
area,
microporosity,
efficient
host–guest
interactions
analyte,
exciton
migration
along
π‐conjugated
chains,
tailorable
structure
target
specific
analytes.
Several
CMP‐based
optical,
electrochemical,
colorimetric,
ratiometric
sensors
excellent
selectivity
performance
were
reported.
This
review
comprehensively
discusses
advances
in
CMP
chemical
(powders
thin
films)
detection
nitroaromatic
explosives,
warfare
agents,
anions,
metal
ions,
biomolecules,
iodine,
volatile
compounds
(VOCs),
simultaneous
delineation
design
strategy
principles
guiding
sensitivity
CMP.
Preceding
this,
various
photophysical
mechanisms
responsible
are
discussed
detail
convenience.
Finally,
future
challenges
addressed
field
discussed.
ACS Applied Polymer Materials,
Journal Year:
2024,
Volume and Issue:
6(10), P. 5674 - 5683
Published: April 10, 2024
Effective
adsorption
and
separation
of
organic
pollutants
from
wastewater
are
essential
to
protecting
the
environment
human
health.
In
this
study,
porous
polymers
(PAPOPs)
containing
a
tri(polyhydroxy-phenyl-azo-phenyl)
benzene
skeleton
structure
were
synthesized
through
diazotization
coupling
without
any
catalyst
participation.
It
was
found
that
PAPOPs
have
high
specific
surface
area,
mesoporous
structure,
good
thermal
stability,
electronegativity.
Based
on
these
characteristics,
demonstrated
maximum
capacity
1773.15
mg
g–1
for
rhodamine
B
(RhB),
1091.75
Congo
red,
306.33
tetracycline
hydrochloride.
Furthermore,
also
exhibited
selectivity
an
extremely
fast
rate
RhB.
The
efficiency
did
not
significantly
decrease
even
after
seven
repeated
uses,
indicating
their
broad
application
prospects
in
treatment.
