Biosensors,
Год журнала:
2023,
Номер
13(2), С. 233 - 233
Опубликована: Фев. 7, 2023
Carbon
dots
(CDs)
are
widely
used
in
the
detection
of
foodborne
contaminants
because
their
biocompatibility,
photoluminescence
stability,
and
ease
chemical
modification.
In
order
to
solve
interference
problem
complexity
food
matrices,
development
ratiometric
fluorescence
sensors
shows
great
prospects.
this
review,
progress
based
on
CDs
contaminant
recent
years
will
be
summarized,
focusing
functionalized
modification
CDs,
sensing
mechanism,
types
sensors,
application
portable
devices.
addition,
outlook
field
presented,
with
smartphone
applications
related
software
helping
better
enable
on-site
ensure
safety
human
health.
Environmental Science & Technology,
Год журнала:
2023,
Номер
57(4), С. 1680 - 1691
Опубликована: Янв. 16, 2023
Precise
and
reliable
onsite
detection
of
methyl
mercaptan
(CH3SH)
is
great
significance
for
environmental
surveillance.
Here,
we
synthesized
a
novel
blue
fluorescence
nanozyme
CeO2@TPE
with
high
peroxidase-like
activity
by
employing
aggregation-induced
emission
(AIE)
tetraphenylethene
(TPE)
to
embed
into
hollow
CeO2
nanospheres.
In
the
presence
ethanol
oxidase
(AOX)
o-phenylenediamine
(OPD),
engineered
an
enzymatic
cascade
activation
ratiometric
fluorescence-colorimetric
dual-mode
system
AOX/CeO2@TPE
+
OPD
toward
CH3SH.
this
design,
CH3SH
initiated
AOX
catalytic
convert
it
H2O2
activating
CeO2@TPE,
producing
•OH
oxidizing
naked-eye
colorless
deep
yellow
2,3-diaminophenazine
(DAP)
absorption
enhancement
at
∼425
nm,
companied
new
peak
∼550
nm
match
intrinsic
∼441
observing
response,
enabling
analysis.
Interestingly,
both
colorimetric
signals
could
be
gathered
being
converted
hue
parameter
on
smartphone-based
sensor,
achieving
visual
in
real
media
acceptable
results.
This
study
gave
insight
designing
target-responsive
system-based
efficient
point-of-care
sensors
safeguarding
health.
ECS Sensors Plus,
Год журнала:
2022,
Номер
1(4), С. 044601 - 044601
Опубликована: Окт. 27, 2022
Traditional
laboratory-based
sensing
strategies
for
food
contaminant
detection
are
often
limited
because
they
time-consuming
and
expensive
require
trained
personnel,
which
makes
them
unsuitable
routine
sensing.
Therefore,
the
scientific
industrial
community
is
showing
enormous
interest
in
design
development
of
portable
devices
on-site
point-of-care
contaminants.
Portability
one
chief
characteristic
features
designing
contemporary
analytical
devices.
Portable
have
received
tremendous
attention,
as
these
novel
advanced
field
Various
been
utilized
Among
these,
electrochemical
emerged
vigorously
past
few
years.
Scientists
industrialists
worked
effortlessly
to
develop
a
minute
amount
water
bodies
products.
The
current
work
aims
demonstrate
recent
research
progress
related
design,
development,
improvement
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(27)
Опубликована: Март 18, 2023
Abstract
Biogenic
amines
(BAs)
are
important
indicators
for
the
evaluation
of
food
spoilage
and
disease
diagnosis.
Thus,
detection
BAs
with
high
practical
potential
is
great
importance.
In
this
work,
a
new
fluorescent
probe
design
strategy
proposed
by
intramolecular
charge
transfer
(ICT)
enhancement
probes,
which
induced
hydrogen
bond
interaction
between
probes
analyte.
The
T1
T2
donor–acceptor
structure
not
only
present
140
nm
bathochromic‐shifted
emission,
ultrafast
responses
(15
s
25
),
sensitivity
(detection
limit
1.3
ppm
2.6
)
to
cadaverine
(the
typical
representative
BAs)
but
also
discriminate
series
simply
reused
at
least
30
times
after
air
blowing.
Further,
quantitative
system
obtained
based
on
films.
Through
Red/Green/Blue
analysis
smartphone,
total
volatile
basic
nitrogen
(an
international
standard
assess
spoilage)
value
can
be
output
quantitatively
evaluate
freshness
food.
fast,
visual,
accurate,
non‐destructive,
enabling
consumers
all
stakeholders
in
supply
chain
monitor
freshness.
