Molecules,
Journal Year:
2023,
Volume and Issue:
28(15), P. 5847 - 5847
Published: Aug. 3, 2023
In
this
study,
a
red-green
dual-emitting
fluorescent
composite
(RhB@MOFs)
was
constructed
by
introducing
the
red-emitting
organic
dye
rhodamine
B
(RhB)
into
metal-organic
frameworks
(Tb-MOFs).
The
sample
can
be
used
as
ratiometric
probe,
which
not
only
avoids
errors
caused
instrument
and
environmental
instability
but
also
has
multiple
applications
in
detection.
results
indicated
that
RhB@MOFs
exhibited
turned-off
response
toward
Fe3+
turned-on
for
continuous
detection
of
ascorbic
acid
(AA).
This
probe
possessed
high
sensitivity
excellent
selectivity
determination
AA.
It
is
worth
mentioning
remarkable
fluorescence
change
could
clearly
observed
naked
eye
under
UV
lamp,
more
convenient
applications.
addition,
mechanisms
Fe3+-
AA-induced
quench
recovery
are
discussed
detail.
displayed
outstanding
recognition
heavy
metal
ions
biomolecules,
providing
potential
water
quality
monitoring
biomolecule
determination.
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(17), P. 21239 - 21251
Published: April 18, 2023
The
development
of
artificial
nanozymes
with
superior
catalytic
performance
and
excellent
stability
has
been
a
long-standing
objective
for
chemists.
total
antioxidant
capacity
(TAC)
is
one
the
most
important
bioanalytical
measures
oxidative
stress
in
body.
present
work
aims
to
develop
smartphone-assisted
visual
detection
sensor
using
cerium-doped
strontium-based
metal-organic
frameworks
(Ce-SrMOFs)
as
peroxidase-like
rapid,
low-cost,
on-site
TAC.
pristine
SrMOF
functioned
peroxidase
nanozyme,
its
enzymatic
activity
was
enhanced
after
doping
it
Ce(IV)
ions
because
multivalent
nature
synergistic
impact
heteroatoms.
Ce-SrMOFs
were
sensitive
single
electron
transfer
hydrogen
atom
processes,
which
implies
that
can
serve
an
ideal
nanozyme
candidate
TAC
analysis.
investigated
mechanism
revealed
•OH
active
oxygen
species
activity.
exhibited
strong
affinity
3,3',5,5'-tetramethylbenzidine
(TMB)
H2O2,
Km
values
0.082
0.427
mM,
are
5.29-
8.67-fold
lower
than
those
horseradish
(HRP),
respectively.
used
ascorbic
acid,
cysteine,
glutathione,
limits
44,
53,
512
nM,
proposed
method
proved
effective
measuring
saliva
samples
from
lung
cancer
patients,
thereby
yielding
results
satisfactory
precision
accuracy.
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(39), P. 46098 - 46107
Published: Sept. 21, 2023
Dual-state
emitters
(DSEs)
are
entities
that
exhibit
fluorescence
in
both
the
solution
and
solid
state,
which
open
up
a
wide
range
of
possibilities
for
their
utilization
various
fields.
The
development
detection
platforms
using
intrinsic
luminescent
metal-organic
frameworks
(LMOFs)
is
highly
desirable
variety
applications.
DSE
MOFs
as
subclass
LMOFs
attractive
due
to
no
need
encapsulation/functionalization
by
fluorophores
and/or
linkers.
Herein,
stable
dual-state
blue
emission
(λem
=
425
nm)
zinc-based
MOF
with
rodlike
nanostructures
(denoted
UoZ-2)
was
synthesized
characterized.
To
best
our
knowledge,
Zn-MOFs
dispersed
form
solid-state
have
not
been
reported
yet.
When
tetracycline
(TC)
added,
continuous
color
evolution
from
greenish-yellow
dramatic
enhancement
observed
aggregation
induced
(AIE).
Thus,
sensitive
ratiometry-based
visual
platform,
on
paper
independently,
designed
TC
exploiting
AIE
properties
UoZ-2
alone
UoZ-2:TC.
limit
estimated
be
4.5
nM,
considered
one
most
ratiometric
fluorescent
probes
sensing.
ratiometry
paper-based
sensor
displays
reliable
quantitative
analysis
recognizing
RGB
values
on-site
satisfactory
recoveries.
TrAC Trends in Analytical Chemistry,
Journal Year:
2023,
Volume and Issue:
170, P. 117425 - 117425
Published: Nov. 10, 2023
Carbon
nanomaterials
(CNMs)
have
attracted
widespread
attention
in
different
fields
due
to
their
superior
capabilities
terms
of
adsorption,
enhanced
oxidation,
and
photocatalysis.
CNMs
are
safer
more
eco-friendly
than
organic
compounds,
which
could
explain
the
growing
interest
developing
new
chemosensors
using
CNMs.
Metal-organic
frameworks
(MOFs)
been
widely
used
many
applications
regular
network
structure,
adaptable
morphology,
porous
nature,
large
specific
surface
area.
However,
most
MOFs
unstable
aqueous
solutions
self-decomposition,
limits
chemical
sensing.
Several
attempts
reported
increase
stability
water-based
matrices
through
modifications
stable
entities
such
as
via
MOF
hybridization
or
carbonization.
hybrids
retain
original
shape
depends
on
type,
while
MOF-derived
undergo
drastic
changes
structure.
This
review
discusses
recent
trends
MOF-hybrids
Hybridization
graphene,
carbon
fibers,
nanotubes
quantum
dots
described
with
emphasis
role
chemosensors.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(25), P. 31895 - 31921
Published: June 13, 2024
Bimetallic-metal
organic
frameworks
(BiM-MOFs)
or
bimetallic
represent
an
innovative
and
promising
class
of
porous
materials,
distinguished
from
traditional
monometallic
MOFs
by
their
incorporation
two
metal
ions
alongside
linkers.
BiM-MOFs,
with
unique
crystal
structure,
physicochemical
properties,
composition,
demonstrate
distinct
advantages
in
the
realm
biochemical
sensing
applications,
displaying
improvements
optical
stability,
selectivity,
sensitivity.
This
comprehensive
review
explores
into
recent
advancements
leveraging
BiM-MOFs
for
fluorescence-based
sensing,
providing
insights
design,
synthesis,
practical
applications
both
chemical
biological
sensing.
Emphasizing
fluorescence
emission
as
a
transduction
mechanism,
aims
to
guide
researchers
maximizing
potential
across
broader
spectrum
investigations.
Furthermore,
it
prospective
research
directions
addresses
challenges,
offering
valuable
perspectives
on
evolving
landscape
probes
rooted
BiM-MOFs.
Lab on a Chip,
Journal Year:
2024,
Volume and Issue:
24(8), P. 2306 - 2316
Published: Jan. 1, 2024
On-site
monitoring
of
ions
in
drinking
water
is
essential
for
safeguarding
public
health,
ensuring
high
quality,
and
preserving
the
ecological
balance
aquatic
ecosystems.
