Green-emitting AIEgen for fluorescent switch-off detection of multi-cations and applications
Abstract
An
easy-to-synthesize
Schiff
base
HNSA
was
obtained
by
condensing
equimolar
amount
of
3-hydroxy-2-naphthohydrazide
and
salicylaldehyde.
In
pure
DMSO,
is
non-fluorescent,
but
increasing
the
HEPES
(10
mM,
pH
7.4)
fraction
(f HEPES)
≥
90%,
it
showed
a
strong
green
fluorescent
with
maximum
fluorescence
intensity
at
515
nm.
The
changes
in
behavior
due
to
formation
sheet-like
self-aggregates
HNSA.
aggregates
were
found
be
emissive
over
wide
range
between
2.20
7.50.
Further,
metal
ion
sensing
ability
aggregation-induced
emission
luminogen
(AIEgen)
performed
f HEPES
95%.
Addition
Co2+,
Ni2+,
Cu2+
Fe2+
ions
shows
decrease
AIEgen
an
estimated
detection
limit
0.43
µM,
0.48
6.26
6.74
respectively.
coated
paper
strips
developed
visually
detect
these
ions.
Also,
successfully
utilized
qualitatively
chickpea
lima
bean
sprouts.
addition,
used
prepare
gelatin
gel
invisible
ink
write
on
filter
transfer
confidential
information.
probe
employed
for
real
environmental
water
samples.
Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 19, 2024
Language: Английский