Riboflavin
was
first
isolated
from
milk
and
widely
used
in
food,
biological
pharmaceutical
fields.
Accurate
detection
of
riboflavin
content
is
great
significance
for
the
treatment
related
diseases
supervision
food/drug
quality.
In
this
paper,
a
1D
chain
copper-based
coordination
polymer
with
excellent
water
stability
synthesized
by
hydrothermal
method
using
rigid
ligand
1,10-phenanthroline
flexible
1,4-phenylenedioxydiacetic
acid,
named
Cu-phen-PEDA.
Based
on
Förster
resonance
energy
transfer
(FRET)
mechanism,
emission
spectrum
Cu-phen-PEDA
overlaps
absorption
riboflavin.
As
an
donor
case,
significantly
increases
fluorescence
intensity
(energy
acceptor),
while
simultaneously
decreasing
its
own
intensity,
which
effective
proportional-building
strategy.
lower
concentration
range,
can
be
specifically
recognized
ratiometric
good
linear
relationship,
limit
as
low
0.23
μM.
The
potential
aspects
specificity,
stability,
reusability
practical
application
were
explored.
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(35), P. 16243 - 16250
Published: Aug. 19, 2024
Photocatalytic
water
decomposition
using
solar
energy
is
one
of
the
most
effective
hydrogen
production
technologies.
The
development
a
structurally
stable
photocatalyst
for
without
cocatalysts
and
photosensitizers
remains
great
challenge.
In
this
paper,
complex
compounds
1
2
with
different
crystal
structures
were
designed
obtained
by
connecting
4′-(2,4-disulfophenyl)-4,2′:6′,4″-terpyridine
organic
ligands
Zn(Ac)2·2H2O
CdCO3.
These
products
used
photocatalytic
separately,
rates
0.66
mol·mol–1·h–1
0.12
mol·mol–1·h–1,
respectively,
addition
any
photosensitizers,
their
charge
separation
transfer
processes
verified
PL,
time-resolved
photocurrent.
Compound
was
tested
in
6
cycles
over
18
h
showed
high
stability
reproducibility.
Crystal Growth & Design,
Journal Year:
2024,
Volume and Issue:
24(21), P. 9133 - 9145
Published: Oct. 10, 2024
Based
on
the
hard
and
soft
acid
base
(HSAB)
theory,
three
heterometallic
uranyl
organic
frameworks
(UOFs),
namely,
[Zn(UO2)(npa)2(2,2′-bpy)(H2O)]
(1),
[Zn(UO2)(nip)2(2,9-dm-1,10-phen)]
(2),
[Zn(UO2)(ntp)2(4,7-dm-1,10-phen)(H2O)]·(H2O)
(3),
have
been
solvothermally
synthesized
by
using
a
variety
of
different
substituted
nitro-benzenedicarboxylic
(H2npa
=
3-nitrophthalic
acid,
H2nip
5-nitroisophthalic
H2ntp
2-nitroterephthalic
acid)
zinc
acetate,
in
presence
N-bearing
coligands,
including
2,2′-bipyridine
(2,2′-bpy),
2,9-dimethyl-1,10-phenanthroline
(2,9-dm-
1,10-phen),
4,7-dimethyl-1,10-phenanthroline
(4,7-dm-1,10-phen).
The
results
single-crystal
X-ray
diffraction
analysis
show
that
each
them
presents
interaction
between
Zn2+
centers.
UOFs
2
3
adopt
three-dimensional
(3D)
with
architectures,
while
UOF
1
exhibits
one-dimensional
(1D)
chain
assembly.
Furthermore,
can
be
used
as
bifunctional
luminescent
sensor
for
detection
metamitron
(MMT)
Cr2O72–
aqueous
solution
limit
(LOD)
4.06
×
10–6
2.52
M,
respectively.
sensing
mechanism
was
also
investigated
detail
through
ultraviolet–visible
(UV–vis)
absorption
spectroscopy,
density
functional
theory
calculations
(DFT),
fluorescence
lifetime
analysis.
This
work
provides
valuable
guidance
facile
effective
design
construction
to
employ
multiresponsive
sensors
environmental
pollutants
solution.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(12), P. 2755 - 2755
Published: June 9, 2024
2,6-pyridine
dicarboxylic
acid
(DPA)
is
an
exceptional
biomarker
of
notorious
anthrax
spores.
Therefore,
the
rapid,
sensitive,
and
selective
quantitative
detection
DPA
extremely
significant
urgent.
This
paper
reports
a
Zn(II)
metal–organic
framework
with
formula
{[Zn6(NDA)6(DPBT)3]
2H2O·3DMF}n
(MOF-1),
which
consists
2,6-naphthalenedicarboxylic
(2,6-NDA),
4,7-di(4-pyridyl)-2,1,3-benzothiadiazole
(DPBT),
ions.
Structural
analysis
indicated
that
MOF-1
three-dimensional
(3D)
network
crystallized
in
monoclinic
system
C2/c
space
group,
revealing
high
pH,
solvent,
thermal
stability.
Luminescence
sensing
studies
demonstrated
had
potential
to
be
highly
selective,
recyclable
fluorescence
sensor
for
identification
DPA.
Furthermore,
fluorescent
test
was
made
detect
promptly
color
changes.
The
enhancement
mechanism
established
by
hydrogen-bonding
interaction
photoinduced
electron
transfer
transition
between
molecules.
