Fluorescent
nanosensors
operating
in
planta
have
shown
recent
success
toward
informing
basic
plant
biology
and
agricultural
applications.
We
developed
near-infrared
(NIR)
fluorescent
using
the
Corona
Phase
Molecular
Recognition
(CoPhMoRe)
technique
that
distinguish
Fe(II)
Fe(III)
species
with
limit
of
detection
as
low
10
nM.
An
anionic
poly(p-phenyleneethynylene)
(PPE)
polyelectrolyte
wrapped
single-walled
carbon
nanotube
(SWNT)
shows
up
to
200%
turn-on
85%
turn-off
responses
Fe(III),
respectively,
allowing
spatial
temporal
analysis
iron
uptake
both
foliar
root-to-shoot
pathways.
Our
findings
reveal
species-dependent
efficiency,
mobility,
utilization
rates,
which
we
show
is
primarily
affected
by
chelation
status
source
physiological
conditions
such
deficiency
treatment
stress
hormone,
abscisic
acid
(ABA).
The
broad
applicability
this
sensor
across
important
highlights
potential
nanotechnology-enabled
sensors
enable
precise
sustainable
nutrient
management.
Advanced Materials,
Год журнала:
2024,
Номер
36(30)
Опубликована: Май 4, 2024
Abstract
Low
efficacy
of
immunotherapy
due
to
the
poor
immunogenicity
most
tumors
and
their
insufficient
infiltration
by
immune
cells
highlights
importance
inducing
immunogenic
cell
death
activating
system
for
achieving
better
treatment
outcomes.
Herein,
ferroelectric
Bi
2
CuO
4
nanoparticles
with
rich
copper
vacancies
(named
BCO‐V
Cu
)
are
rationally
designed
engineered
ferroelectricity‐enhanced
apoptosis,
cuproptosis,
subsequently
evoked
immunotherapy.
In
this
structure,
suppressed
recombination
electron–hole
pairs
band
bending
polarization
lead
high
catalytic
activity,
triggering
reactive
oxygen
species
bursts
apoptosis.
The
fragments
produced
apoptosis
serve
as
antigens
activate
T
cells.
Moreover,
generated
charge
catalysis,
nanomedicine
can
act
“a
smart
switch”
open
membrane,
promote
nanomaterial
endocytosis,
shut
down
+
outflow
pathway
evoke
thus
a
strong
response
is
triggered
reduced
content
adenosine
triphosphate.
Ribonucleic
acid
transcription
tests
reveal
pathways
related
activation.
Thus,
study
firstly
demonstrates
feasible
strategy
enhancing
using
single
semiconductor‐induced
cuproptosis.
CrystEngComm,
Год журнала:
2024,
Номер
26(5), С. 577 - 593
Опубликована: Янв. 1, 2024
Luminescent
metal–organic
frameworks
(LMOFs)
have
emerged
as
promising
luminescent
sensors
for
remarkable
and
selective
sensing
towards
Fe
3+
Cu
2+
via
a
“turn-off/turn-on”
strategy.
Journal of Agricultural and Food Chemistry,
Год журнала:
2022,
Номер
70(35), С. 10899 - 10906
Опубликована: Авг. 23, 2022
Despite
their
status
of
being
widely
used
as
food
additives,
bisulfite
(HSO3-)/sulfite
(SO32-)
can
pose
serious
health
risks
when
they
are
excessively
added.
Therefore,
it
is
vital
to
develop
a
new
method
for
detecting
HSO3-/SO32-
in
foodstuff.
In
this
paper,
benzopyran-benzothiazole
derivative
(probe
DCA-Btl)
with
near-infrared
emission
was
designed
and
synthesized
by
constructing
"push-pull"
electronic
system.
DCA-Btl
selectively
recognize
via
colorimetric
fluorescence
dual
channel
DMF/PBS
(1:1,
v/v,
pH
=
8.4),
the
wavelength
reach
710
nm.
The
quenching
after
recognition
HSO3-
attributed
photoinduced
electron
transfer
(PET)
process
adduct
DCA-Btl-HSO3-
evaluated
DFT/TD-DFT
method.
addition,
has
many
advantages,
including
large
Stokes
shift
(95
nm),
good
anti-interference
ability,
little
cytotoxicity.
What's
more,
been
successfully
applied
detection
actual
water
samples
such
sugar,
red
wine,
biscuits
satisfying
results,
well
fluorescent
imaging
living
MCF-7
cells.
ACS Omega,
Год журнала:
2023,
Номер
8(34), С. 31410 - 31418
Опубликована: Авг. 18, 2023
A
facile
one-step
carbonization
approach
is
reported
herein
for
the
sustainable
hydrothermal
synthesis
of
fluorescent
blue
nitrogen-doped
carbon
quantum
dots
(NCQDs)
using
banana
petioles
obtained
as
biomass
waste.
These
NCQDs
were
used
to
design
a
"turn-off"
probe,
which
exhibited
excellent
sensing
capability
toward
selective
detection
micronutrient,
Fe3+
ion,
with
limit
(LOD)
0.21
nM.
The
turn-off
process
involves
formation
nonradiative
charge
transfer
complex
via
photoinduced
electron
process.
sensor
showed
linear
range
from
5
200
nM
and
was
estimation
ions
in
real
plant
samples.
Further,
paper-based
assay
developed
quantitative
LOD
values
0.47
solution-based
0.94
smartphone-based
readout
potential
on-field
applications
precision
agriculture.
Bioimaging
studies
on
leaf
cells
revealed
staining
stomata
openings
lamella.
Therefore,
this
work
provides
way
valorization
waste
into
functional
nanomaterials
without
any
extra
chemicals.
Analytical Chemistry,
Год журнала:
2023,
Номер
95(21), С. 8348 - 8356
Опубликована: Май 17, 2023
Copper
ions
play
vital
roles
in
regulating
life
processes
and
being
closely
involved
several
diseases
such
as
cancer.
Although
detection
methods
based
on
fluorescent
sensors
or
other
strategies
have
been
developed,
it
still
remains
a
challenge
to
simultaneously
realize
the
convenience,
specificity,
accuracy
intracellular
copper
ion
analysis.
Herein,
we
propose
an
aptamer-functionalized
DNA
sensor
(AFDS)
for
accurate
specific
of
Cu(II)
both
vitro
cells
by
engineering
linkage
two
aptamers,
namely,
Lettuce
aptamer
AS1411
aptamer,
achieve
manner
recognition
response.
Taking
advantage
functions
each
tumor
cell
capability
high-contrast
performance
are
equipped
AFDS.
Furthermore,
AFDS
shows
high
specificity
selectivity
response
avoid
interference
from
common
metal
ions,
chelators,
reactants
associated
with
irreversible
interaction
between
nucleobases
Cu(II),
which
can
destroy
topological
structures
switch
off
fluorescence
It
also
enables
sensitive
limit
lower
0.1
μM
wide
linear
range
300
μM.
The
feasibility
superiority
provide
opportunity
reveal
concentration-dependent
time-dependent
responses
living
cells.
Therefore,
has
achieved
novel
exhibit
great
potential
exploring
copper-related
biological
pathological
research.
