Luminescence,
Journal Year:
2024,
Volume and Issue:
39(12)
Published: Dec. 1, 2024
Trimethylamine
oxide
(TMAO),
a
microbial
metabolite
commonly
found
in
foods,
has
been
attracting
increasing
attention
as
it
is
associated
with
the
risk
of
several
diseases.
Simple
and
accurate
analytical
methods
are
crucial
for
TMAO
study.
In
present
study,
we
proposed
chemical
reaction-based
fluorescence
assay
detection
using
synthetic
small
molecular
probes.
After
systematic
screening
optimization,
sensitive
selective
quantification
achieved
based
on
probe
P6
(3-iodopropanyl
group
modified
resorufin).
Excellent
linearity
(R
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(15), P. 17748 - 17758
Published: July 30, 2024
Thanks
to
the
superior
photoluminescence
performance
of
lanthanide(III)
ions
sensitized
by
organic
ligands
via
an
"antenna
effect"
and
host–guest
interactions
between
a
MOF
material
targeted
analytes,
nanoporous
can
achieve
luminescence
dynamics
through
influence
thus
endowing
with
ratiometric
sensing
application.
Consequently,
3D
Eu(III)
based
material,
{[Eu(BPDC)(μ3–OH)(H2O)]·H2O·DMF}n
(Eu-MOF,
2,2′-bipyridine-4,4′-dicarboxylic
acid
=
H2BPDC),
assembled
H2BPDC
ligand
Eu3+
for
achieving
on–off
inflammatory
marker
neopterin
(Neo)
detection,
has
been
fabricated.
The
Eu-MOF
is
consist
1D
Eu(μ3–OH)
chains,
which
could
further
be
connected
deprotonated
build
framework,
showing
nanosized
aperture
ca.
12.6
Å
×
along
a-direction.
titration
experiments
demonstrate
that
exhibit
simultaneous
behavior
Neo,
regulating
interactions.
More
importantly,
visible
color
change
observation
from
red
bluish
violet
naked
eyes
in
response
concentrations
Neo
indicator
facile
achieved
luminescent
test
strips
portable
hydrogels.
A
combination
competitive
absorption
contribute
confirmed
UV–vis
spectral
overlap
experiment
density
functional
theory
calculations.
Critical Reviews in Analytical Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 18
Published: Feb. 11, 2025
Due
to
their
natural
biocompatibility,
cost-effectiveness,
and
strong
interfacial
adhesion,
biopolymers
have
highly
favorable
properties
for
electrochemical
biosensors.
this
endogenous
catecholamine's
versatile
chemistry,
dopamine's
oxidation
self-polymerization
recently
attracted
considerable
interest.
Polydopamine
(PDA)'s
application
surface
deposition,
molecular
imprinting,
electrochemistry
is
especially
noteworthy.
This
review
aims
propose
the
role
of
PDA
in
quantitative
applications,
evaluate
analytical
performance,
cost,
reproducibility,
versatility
methods
developed,
standard
(bio)analytical
platforms.
First,
parameters
that
influence
polymerization
dopamine
are
discussed.
Then,
different
functionalities
its
recent
applications
biosensing
purposes
reviewed
build
bioanalytical
The
discussion
concludes
with
emerging
PDA-integrated
biosensor
Finally,
future
perspectives
improved
use
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(22), P. 25805 - 25814
Published: Oct. 31, 2024
Developing
a
sensitive,
rapid,
and
accurate
method
for
the
quantitative
visual
detection
of
anthrax
biomarker
dipicolinic
acid
(DPA)
is
great
significance
to
human
health
public
safety.
Due
presence
"antenna
effect",
sensitization
Eu3+
ions
Tb3+
can
be
facilely
achieved
by
organic
ligands
with
different
degrees
exhibits
excellent
luminescence
behavior
ions,
enabling
dual-centered
lanthanide
metal–organic
framework
(Ln-MOF)
promising
ratiometric
fluorescence
sensor
trace
DPA
determination.
Herein,
we
present
series
nanoporous
frameworks,
denoted
as
{EuxTb1–x(BPDC)(μ3-OH)(H2O)·H2O·DMF}n
(EuxTb1–x-BPDC)
assembled
2,2′-bipyridine-4,4′-dicarboxylic
(H2BPDC),
sensors
DPA.
Among
these,
Eu0.5Tb0.5-BPDC
stands
out
optimal
material,
exhibiting
superior
performance
quantitative,
visual,
detection.
Moreover,
demonstrates
stability
in
aqueous
solution
capability
remarkable
sensitivity
(limit
(LOD)
=
0.608
μM),
selectivity
(Ksv
6.46
×
106
M–1),
anti-interference,
impressive
reusability.
contribution
blocked
energy
transfer
between
mixed-lanthanide
competitive
absorption
DPA,
color
change
observation
from
red
greenish-yellow
under
illumination
ultraviolet
light.
Most
importantly,
colorimetric
test
strips
portable
hydrogels,
facilitating
practical
application
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(38), P. 26132 - 26146
Published: Jan. 1, 2024
The
designed
H-MOF/MXene-based
sensor
had
high
selectivity
for
NH
3
at
RT,
provided
humidity-independent
detection,
and
response
with
reliable
characteristics.
