A
key
factor
in
enhancing
molecular-level
detection
is
the
analyte's
potential
to
direct
a
visible
photophysical
characteristic.
Here,
we
describe
molecular
probe,
Xanth-CHO,
and
studies
on
how
ethylenediamine
(EDA)
1,3-diaminopropane
(DAP)
cause
fluorescence
turn-on
reactions
that
allow
their
an
aqueous
buffer.
Since
Xanth-CHO
aggregate
state
buffer,
presence
of
EDA
or
DAP
modifies
this
causes
probe
undergo
radiative
decay
by
producing
imine
products
Xanth-CHO.
The
intensity
rises
linearly
with
increasing
concentrations,
permitting
limit
at
nanomolar
level.
efficiency
detecting
has
been
demonstrated
competitive
analysis
evaluation
real
water
samples.
Further,
probe-coated
TLC
strips,
as
low-cost
tool,
were
deployed
for
vapor
phase
recognition
vapors
during
fish
spoilage.
Advanced Optical Materials,
Год журнала:
2023,
Номер
12(5)
Опубликована: Окт. 15, 2023
Abstract
Despite
achieving
a
significant
demand,
single‐component
white
light
(SCWL)
generation
from
polymeric
materials
is
fundamental
challenge.
Moreover,
SCWL
emission
conjugated
microporous
polymers
(CMPs)
sporadic.
So
far,
all
these
emissive
CMPs
are
typically
constructed
by
linking
electron‐donor
and
acceptor
systems
using
expensive
metal/ligands
at
higher
temperatures
long
duration.
Herein,
facile
metal/ligand‐free
approach
developed
to
access
newly
designed,
conformationally
twisted,
electron‐rich,
vinylene‐linked
dual‐state
WL
polymer
quantitatively
25
°C
via
Horner‐Wadsworth‐Emmons
reaction.
This
CMP
emits
intense
in
solution
yellow
the
solid
state,
after
blending
with
polyvinyl
alcohol,
generates
flexible,
thin
film.
Among
incorporated
electron‐rich
units,
suitably
oriented
triphenylamine
acts
as
donor
anthracene
an
acceptor.
Such
donor–acceptor
units
facilitate
emitting
entire
visible
region.
The
[CIE
(Commission
Internationale
de
l'Éclairage):
0.29,
0.32]
tuned
adjusting
concentration
dimethyl
sulfoxide,
film
state
produces
CIE
of
(0.30,
0.32).
Based
on
observations,
origin
anticipated
blue‐emissive
yellow‐emissive
cores
intramolecular
charge
transfer
process.
It
introduces
easy
economical
SCWL‐emissive
for
potential
device
applications.
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
89(7), С. 4384 - 4394
Опубликована: Март 15, 2024
This
work
introduces
metal/column-free
facile
quantitative
access
to
conformationally
twisted
catechol-linked
organophosphonate
(CAP)
as
a
blue-emitting
solid
that
could
reversibly
detect
only
1,3-diaminopropane
(DAP)
and
1,2-ethylenediamine
(EDA)
vapors,
belonging
industrially
pharmaceutically
abundant
crucial
diamines.
In
CAP,
two
adjacent
hydroxy
groups
in
benzene
ring
facilitate
selective
diamine–dihydroxy
(amine–phenol
type)
interactions
the
phase,
leading
quenched
emission
with
selectively
smaller
aliphatic
PAs,
is,
DAP
EDA.
The
disparity
was
noticed
an
isomeric
resorcinol-linked
emitter
(RAP),
detecting
various
polyamine
vapors
superior
sensitivity.
A
one-carbon-away
placed
group
RAP
can
generate
monoamine–hydroxy
complex,
not
diamine–dihydroxy.
more
acidic
nature
of
resorcinol
would
prefer
ionizing
amines
and,
consequently,
creating
amine/hydroxy
interactions.
More
systematic
investigations
reveal
exciting
role
amine–hydroxy
realization
for
catechol
analog
phase
syn–anti
conformation
CAP.
Unlike
RAP's
available
crystal
void
space
creates
considerable
room
which
come
closer
facilitates
amine–phenol
phosphonates
detection
PAs
is
also
examined.
Observed
outcomes
are
substantiated
by
FT-IR,
single-crystal
X-ray
diffraction,
SEM,
XPS,
mass
spectroscopic
studies.
proposed
further
supported
DFT-optimized
molecular
structures.
Current Organic Chemistry,
Год журнала:
2024,
Номер
28(17), С. 1380 - 1386
Опубликована: Май 15, 2024
:
A
luminescent
calix[5]arene
with
a
covalently
linked
dansyl
chromophore
substituent
has
been
successfully
used,
both
in
solution
and
the
gas
phase
(ESI-MS),
for
recognition
of
biogenic
amines
that
contain
linear
alkylammonium
structural
unit.
Binding
constant
values,
determined
by
fluorescence
spectroscopy,
revealed
greater
affinity
cadaverine,
spermidine,
L-lysine,
which
terminal
ammonium
group
allows
additional
stabilizing
interactions
moiety.
