Molecules,
Journal Year:
2023,
Volume and Issue:
28(3), P. 1275 - 1275
Published: Jan. 28, 2023
Novel
1,8-naphthalimide-based
fluorescent
probes
NI-1
and
NI-2
were
designed
screened
for
use
as
chemosensors
detection
of
heavy
metal
ions.
Two
moieties,
methylpyridine
(NI-1)
hydroxyphenyl
(NI-2),
attached
via
piperazine
at
the
C-4
position
napthalimide
core
resulting
in
a
notable
effect
on
their
spectroscopic
properties.
are
pH
sensitive
show
an
increase
fluorescence
intensity
around
525
nm
(switch
"on")
acidic
environment,
with
pKa
values
4.98
2.91,
respectively.
Amongst
ions
only
Cu2+
Hg2+
had
significant
The
is
quenched
presence
either
or
which
attributed
to
formation
1:1
metal-ligand
complexes
binding
constants
3.6
×
105
3.9
104,
chemosensor
can
be
used
quantification
sub-micromolar
quantities,
linear
range
from
250
nM
4.0
μM
limit
1.5
10-8
M.
determination
2
10
μM,
8.8
Conversely,
behaves
like
typical
photoinduced
electron
transfer
(PET)
sensor
Here,
complex
(binding
constant
8.3
103)
turns
green
into
"on"
state.
showed
remarkable
selectivity
towards
ions,
allowing
concentration
over
1.3
25
4.1
10-7
Sensors,
Journal Year:
2023,
Volume and Issue:
23(8), P. 4125 - 4125
Published: April 20, 2023
Heavy
metal
ions,
one
of
the
major
pollutants
in
environment,
exhibit
non-degradable
and
bio-chain
accumulation
characteristics,
seriously
damage
threaten
human
health.
Traditional
heavy
ion
detection
methods
often
require
complex
expensive
instruments,
professional
operation,
tedious
sample
preparation,
high
requirements
for
laboratory
conditions,
operator
professionalism,
they
cannot
be
widely
used
field
real-time
rapid
detection.
Therefore,
developing
portable,
highly
sensitive,
selective,
economical
sensors
is
necessary
toxic
ions
field.
This
paper
presents
portable
sensing
based
on
optical
electrochemical
situ
trace
ions.
Progress
research
sensor
devices
fluorescence,
colorimetric,
surface
Raman
enhancement,
plasmon
resonance,
various
electrical
parameter
analysis
principles
highlighted,
characteristics
limits,
linear
ranges,
stability
are
analyzed.
Accordingly,
this
review
provides
a
reference
design
sensing.
ACS Omega,
Journal Year:
2024,
Volume and Issue:
9(9), P. 9946 - 9960
Published: Feb. 20, 2024
Myocardial
infarction
(MI)
is
a
cardiovascular
disease
that
occurs
when
there
an
elevated
demand
for
myocardial
oxygen
as
result
of
the
rupture
or
erosion
atherosclerotic
plaques.
Globally,
mortality
rates
associated
with
MI
are
steadily
on
rise.
Traditional
diagnostic
biomarkers
employed
in
clinical
settings
diagnosis
have
various
drawbacks,
prompting
researchers
to
investigate
fast,
precise,
and
highly
sensitive
biosensor
platforms
technologies.
Biosensors
analytical
devices
combine
biological
elements
physicochemical
transducers
detect
quantify
specific
compounds
analytes.
These
play
crucial
role
fields
including
healthcare,
environmental
monitoring,
food
safety,
biotechnology.
developed
detection
cardiac
typically
electrochemical,
mass,
optical
biosensors.
Nanomaterials
emerged
revolutionary
components
field
biosensing,
offering
unique
properties
significantly
enhance
sensitivity
specificity
systems.
This
review
provides
comprehensive
overview
advancements
applications
nanomaterial-based
biosensing
Beginning
exploration
fundamental
principles
governing
nanomaterials,
we
delve
into
their
diverse
properties,
but
not
limited
electrical,
optical,
magnetic,
thermal
characteristics.
The
integration
these
nanomaterials
biosensors
has
paved
way
unprecedented
developments
techniques.
Moreover,
types
explained
detail.
current
biomarker
also
discussed,
elaboration
pros
cons
existing
concluding
future
perspectives.
