Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 5, 2024
Abstract
In
response
to
the
growing
concerns
about
unauthorized
use
of
advanced
secondary
explosives
such
as
TKX‐50
against
non‐combatant
targets,
there
is
an
urgent
need
for
effective
detection
methods
or
techniques
ensure
efficient
security
screening,
homeland
security,
and
public
safety.
Herein,
a
new
polymeric
receptor
(IV)
derived
from
functionalized
tetraphenylethylene
moiety
(TPE)
1,3,5‐tris(4‐aminophenyl)benzene
(TAPB)
moieties
through
‘switch
ON’
luminescence
upon
specific
binding
explosive,
reported.
The
observed
‘luminescence
rationalized
based
on
charge
transfer
complex
formation
between
IV
(
K
=
1.7
×
10
4
m
−1
).
This
validated
by
steady
excited‐state
studies,
along
with
detailed
computational
studies.
authors’
presumptions
are
further
adequate
control
studies
using
appropriate
monomeric
derivative
(III)
TPE.
Moreover,
this
can
be
integrated
into
smart
user‐friendly
Internet
Things
(IoT)‐based
prototype
device.
device
effectively
convert
optical
responses
digital
output
develop
real‐time
in
solution.
lightweight,
portable
ideally
suited
remote
surveillance
monitoring
TKX‐50;
examples
rare
contemporary
literature.
Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 10, 2025
In
recent
years,
nitro
explosives
have
posed
a
threat
to
national
security
and
human
health
due
their
hazard
environmental
contamination.
The
rapid
effective
detection
of
remains
challenge.
this
work,
new
Schiff
base
ligand
H2L
was
carefully
designed
successfully
synthesized,
=
1,1'-((1E,1'E)-(cyclohexane-1,4-diylbis
(azanylidene))
bis
(methylidene)
(naphthalene-2-ol).
Two
coordination
polymers,
[Zn2L2]n
[La(NO3)3
(H2L)2CH3OH]n,
were
constructed
by
solvothermal
reaction.
aforementioned
polymers
characterized
X-ray,
PXRD,
TGA,
FT-IR,
the
results
demonstrated
that
Zn-CP
La-CP
exhibited
one-dimensional
chain
structure
two-dimensional
reticular
structure.
Given
excellent
performance
(CPs)
in
field
fluorescence
analysis
sensing,
sensing
experiments
conducted
on
explosives.
experimental
high
selectivity
sensitivity
for
2,4,6-trinitrophenol
(TNP)
quenching,
with
limit
4
×
10-6
M.
TNP
even
as
low
0.78
M,
quenching
effect
constants
KSV
7.03
103
1.59
104
M-1.
Through
experimentation
density
functional
theory
calculations,
observed
can
be
attributed
three
mechanisms:
photoinduced
electron
transfer,
resonance
energy
electrostatic
interactions
between
CPs
NACs.
Moreover,
sensor-coated
portable
test
strip
devices
fabricated
easy
on-site
explosive.
Chemistry - An Asian Journal,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 30, 2025
Abstract
π‐Electron
rich
highly
luminescent
borondipyrromethene
(BODIPY)
and
fluorene‐based
A‐
alt
‐B
type
copolymers
with
(
P1
)
or
without
P2
triazolyl
moiety
in
the
polymeric
chain
were
designed
synthesized.
The
characterized
by
NMR
spectra
tetradetector
GPC
exhibiting
molecular
weight
(M
n
of
22.4
kDa
for
23.1
polydispersity
indices
1.31
1.48,
respectively.
emissive
π‐conjugated
investigated
as
fluorescent
chemosensors
detecting
nitroaromatic
compounds
(NACs)
solution,
vapor,
contact
modes.
polymer
probe
bearing
polar
1,2,3‐triazolyl
unit
backbone
showed
superior
sensing
property
towards
NACs
over
due
to
favorable
supramolecular
interaction
between
electron
deficient
NACs,
facilitated
unit.
Detailed
photophysical
studies
conducted
elucidate
fluorescence
quenching
mechanism
via
photoinduced
transfer
(PET)
mechanism.
presence
long
alkyl
chains
on
BODIPY
fluorene
units
enabled
solid‐state
emission
preventing
aggregation
induced
quenching.
This
allowed
trace
detection
nanomolar
picric
acid
sample
bare
eye,
providing
a
quick,
simple,
cost‐effective
way
NACs.
