Dunyā.,
Journal Year:
2023,
Volume and Issue:
17(1), P. 11 - 20
Published: Jan. 1, 2023
Xanthene
and
its
derivatives
are
important
in
medical
diagnosis
laser
technology.In
this
work,
spectral
features
of
fluorescein
disodium
were
investigated
different
environments
with
polarity
characteristics.Hence,
the
absorption
fluorescence
spectra
molecule
studied
environments.Our
resultsshow
that
depend
strongly
on
substituents
structure
molecular
interactions.To
investigate
contribution
various
interactions
behavior
used
sample,
linear
solvation
energy
relationship
concept
is
used.Moreover,
dipole
moment
variations
from
ground
to
excited
states
estimated
using
solvent
media.According
results,
value
state
higher
than
state.
Triazole
derivatives
of
fluorescein
containing
N,N-dimethylaminopropyl
fragments
and
their
ammonium
salts
were
synthesized
with
yields
74
-
85%.
The
resulting
compounds
exhibit
fluorescent
properties
in
the
green
region
visible
spectrum.
critical
aggregation
concentration
(CAC)
was
estimated
using
a
py-rene
probe
corresponding
to
range
0.28
1.43
mM,
at
concentrations
above
CAC
form
stable
aggregates
ranging
from
165
202
nm.
A
relative
quantum
yield
5-24%
has
been
calculated
based
on
fluorescence
UV
spectra.
best
value
is
shown
by
derivative
tetradecyl
substituent.
When
studying
photocatalytic
through
reaction
between
N-substituted
1,2,3,4-tetrahydroisoquinoline
malonic
ester,
mono-tetradecyl
deriva-tive
demonstrated
results.
According
gas
chromatography-mass
spectrometry
(GC-MS)
data,
conversion
initial
heterocycle
reached
95%.
Therefore,
these
have
potential
act
as
an
effective
photocatalysts.
Organics,
Journal Year:
2024,
Volume and Issue:
5(3), P. 346 - 360
Published: Sept. 11, 2024
Triazole
derivatives
of
fluorescein-containing
N,N-dimethylaminopropyl
fragments
and
their
ammonium
salts
were
synthesized
with
yields
74–85%.
The
resulting
compounds
exhibit
fluorescent
properties
in
the
green
region
visible
spectrum.
critical
aggregation
concentration
(CAC)
was
estimated
using
a
pyrene
probe
corresponding
to
range
0.28–1.43
mM,
at
concentrations
above
CAC,
form
stable
aggregates
ranging
from
165
202
nm.
A
relative
quantum
yield
5–24%
has
been
calculated
based
on
fluorescence
UV
spectra.
best
value
is
shown
by
derivative
containing
tetradecyl
substituent.
When
studying
photocatalytic
through
reaction
between
N-substituted
1,2,3,4-tetrahydroisoquinoline
malonic
ester,
mono-tetradecyl
demonstrated
results.
According
gas
chromatography–mass
spectrometry
(GC-MS)
data,
conversion
initial
heterocycle
reached
95%.
Therefore,
these
have
potential
act
as
an
effective
photocatalysts.
RSC Advances,
Journal Year:
2023,
Volume and Issue:
13(43), P. 30420 - 30428
Published: Jan. 1, 2023
Two
novel
fluorescein
as
well
benzo-12-crown-4
ether
functionalized
dipyrromethane
receptors
(DPM3
and
DPM4)
have
successfully
been
synthesized.
The
anion
(used
their
TBA
salts)
binding
studies
of
thus
prepared
DPM3
DPM4
were
evaluated
by
the
UV-visible
spectrophotometric
titrations.
Binding
affinities
stoichiometry
determined
through
titrations
data
with
involvement
BindFit
(v0.5)
package
available
online
at
https://supramolecular.org.
Moreover,
events
validated
means
comparison
partial
1H-NMR
spectrum
simple
host
molecule
that
host-guest
complex,
1
:
further
confirmed
Job's
method
continuous
variation.
From
results,
we
observed
constant
(Ka)
values
DPM3/DPM4
various
tested
anions
in
range
516.07
M-1
to
63789.81
M-1,
depending
upon
nature/shape/size
anions.
anion-π
interactions
spectral
data,
supported
literature
reported
systems.
authors
hope
such
types
valued
will
be
benefitted
future
for
recognizing/binding
a
variety
biologically
important
Fluoride
ion
plays
crucial
roles
in
many
biological,
chemical,
medical
and
environmental
processes.
Constructing
a
highly
sensitive
florescent
probe
for
naked-eye
detection
F-
is
of
particular
importance
but
remains
challenging.
In
this
work,
we
developed
colorimetric
ratiometric
fluorescent
pyrrolopyrrole
aza-BODIPY
(PPAB)-based
polymer
(P1)
recognizing
F-.
presence
F-,
P1
showed
obvious
color
change
from
green
to
yellow
with
absorption
maximum
blueshift
670
nm
340
nm.
The
weak
emission
697
changed
strong
orange
fluorescence
appearance
new
broad
bands
at
520
642
was
capable
sensitively
selectively
detecting
low
limit
0.07
μM.
sensing
mechanism
revealed
that
B–N
bond
cleavage
following
hydrolysis
induced
by
responsible
the
distinct
signals.
results
indicated
PPAB
core
an
efficient
recognition
unit
first
time.
Finally,
silicone
or
test
paper-loaded
could
detect
can
successfully
applied
real
water
samples
concentration.
