Analytical Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 14, 2025
As
the
third
largest
class
of
dyes
in
world,
triphenylmethane
are
widely
applied
colorimetric
sensing.
However,
commonly
nonfluorescent,
which
limits
their
sensing
applications.
It
is
worthwhile
to
study
fluorescence
off/on
control
and
promote
applications
technology.
In
this
work,
was
investigated
by
employing
a
dye
xylenol
orange
(XO),
indicator
for
pH
metal
ions.
discovered
that
XO
exhibited
aggregation-induced
emission
(AIE),
thus,
its
controlled
intramolecular
rotation.
This
discovery
broadens
optical
properties
transforms
from
colorimetric/fluorescent
dual-mode
AIE
dye.
further
verified
AIE-based
improved
performance
XO.
A
bovine
serum
albumin-based
rotation
suppression
method
enhance
indication
Compared
with
sensing,
exhibits
higher
accuracy,
ascribed
self-validation
effect.
work
uncovers
breathes
new
life
into
dyes.
ACS Sensors,
Год журнала:
2022,
Номер
7(9), С. 2521 - 2536
Опубликована: Сен. 1, 2022
Fluorescence
sensing
can
not
only
identify
a
target
substrate
qualitatively
but
also
achieve
the
purpose
of
quantitative
detection
through
change
fluorescence
signal.
It
has
advantages
immense
sensitivity,
rapid
response,
and
excellent
selectivity.
The
proposed
aggregation-induced
emission
(AIE)
concept
solves
problem
traditional
fluorescent
molecules
becoming
weak
or
quenched
in
high
concentration
aggregated
state
conditions.
Schiff
base
probes
have
simple
synthesis,
low
toxicity,
easy
design.
They
are
often
used
for
various
substances.
In
this
review
we
cover
late
developments
compounds
with
AIE
characteristics
working
as
sensors.
ACS Omega,
Год журнала:
2022,
Номер
7(37), С. 33248 - 33257
Опубликована: Сен. 12, 2022
A
pyrene-based
fluorescent
chemosensor
APSB
[N-(pyrene-1-ylmethylene)
anthracen-2-amine]
was
designed
and
developed
by
a
simple
condensation
reaction
between
pyrene
carboxaldehyde
2-aminoanthracene.
The
sensor
selectively
binds
Fe3+
in
the
presence
of
other
metal
ions.
Apart
from
this,
shows
high
selectivity
sensitivity
toward
ion
detection.
detection
limit
for
1.95
nM,
binding
constant
(Kb)
obtained
as
8.20
×
105
M-1
DMSO/water
(95/5,
v/v)
medium.
fluorescence
quantum
yields
APSB-Fe3+
were
calculated
0.035
0.573,
respectively.
function
this
can
be
explained
through
photo-induced
electron
transfer
mechanism
which
further
proved
density
functional
theory
studies.
Finally,
live-cell
image
study
HeLa
cells
also
carried
out
to
investigate
cell
permeability
its
efficiency
selective
living
cells.
Molecules,
Год журнала:
2023,
Номер
28(10), С. 4252 - 4252
Опубликована: Май 22, 2023
Biothiols
such
as
cysteine,
homocysteine,
and
glutathione
play
significant
roles
in
important
biological
activities,
their
abnormal
concentrations
have
been
found
to
be
closely
associated
with
certain
diseases,
making
detection
a
critical
task.
To
this
end,
fluorescent
probes
become
increasingly
popular
due
numerous
advantages,
including
easy
handling,
desirable
spatiotemporal
resolution,
high
sensitivity,
fast
response,
favorable
biocompatibility.
As
result,
intensive
research
has
conducted
create
for
the
imaging
of
biothiols.
This
brief
review
summarizes
recent
advances
field
biothiol-responsive
probes,
an
emphasis
on
rational
probe
design,
reaction
mechanism,
discriminating
detection,
reversible
specific
detection.
Furthermore,
challenges
prospects
fluorescence
biothiols
are
also
outlined.
