Biosensors,
Год журнала:
2022,
Номер
12(2), С. 51 - 51
Опубликована: Янв. 19, 2022
The
efficient
and
selective
detection
of
volatile
organic
compounds
(VOCs)
provides
key
information
for
various
purposes
ranging
from
the
toxicological
analysis
indoor/outdoor
environments
to
diagnosis
diseases
or
investigation
biological
processes.
In
last
decade,
different
sensors
biosensors
providing
reliable,
rapid,
economic
responses
in
VOCs
have
been
successfully
conceived
applied
numerous
practical
cases;
however,
global
necessity
a
sustainable
development,
has
driven
design
devices
greener
methods.
this
review,
most
recent
innovative
VOC
with
features
are
presented.
grouped
into
three
main
industrial
sectors
daily
life,
including
environmental
analysis,
highly
important
toxicity
issues,
food
packaging
tools,
especially
aimed
at
avoiding
spoilage
meat
fish,
diseases,
crucial
early
relevant
pathological
conditions
such
as
cancer
diabetes.
research
outcomes
presented
review
underly
preparing
higher
efficiency,
lower
limits,
improved
selectivity,
enhanced
characteristics
fully
address
manufacturing
biosensors.
Abstract
This
study
investigated
the
sensing
properties
of
electrospun
NFs
composed
polyacrylonitrile
(PAN)
and
polyvinylidene
fluoride
(PVDF)
coated
on
quartz
crystal
microbalance
(QCM)
in
response
to
different
volatile
organic
compounds
(VOCs),
including
dichloromethane,
chloroform,
carbon
tetrachloride,
benzene,
trichloroethylene.
Characterization
PAN/PVDF
was
performed
using
scanning
electron
microscopy
(SEM),
thermogravimetric
analysis
(TGA),
Brunauer–Emmett–Teller
(BET)
analysis.
Five
concentrations
PVDF
were
tried
obtain
well‐ordered
straightforward
morphology
with
a
thin
diameter
nanofiber
characterization
results
indicated
that
containing
25
wt%
displayed
desired
average
183.6
±
40
nm.
Besides,
high
surface
area
26.0464
m
2
/g
37.3729
nm
pore
size.
The
QCM
sensor
demonstrated
highest
dichloromethane
vapor
among
VOCs
tested.
values
sensitivity
LOD
for
calculated
as
0.0249
Hz
ppm
−1
132.53
ppm,
respectively.
kinetic
data
vapors
nonlinear
autoregressive
neural
network
exogenous
input
utilized
most
accurate
molecular
modelling
based
frequency
shift
values.
artificial
(NARX‐ANN)
model
exhibited
superior
performance
fitting
experimental
compared
other
VOCs,
shown
by
correlation
coefficient
For
all
VOC
results,
ranged
from
approximately
0.9815–0.9964.
Molecules,
Год журнала:
2025,
Номер
30(8), С. 1659 - 1659
Опубликована: Апрель 8, 2025
2-(2'-aminophenyl)benzothiazole
is
a
readily
tunable
fluorescent
core
with
widespread
applications
in
coordination
chemistry,
sensing,
light-emitting
processes,
medicinal
and
catalysis.
This
review
provides
an
overview
of
the
synthetic
methodologies
to
access
its
organic
derivatives,
including
various
phosphorous
silane
pincer
ligands.
The
luminescent
properties
will
be
discussed,
special
focus
on
ESIPT
AIE
processes.
transition
metals
lanthanides
presented,
as
well
their
influence
biological
properties.
derivatives
have
also
been
employed
sensors
for
range
cations
anions
due
binding
modes,
bioimaging
purposes.
Recently,
first
application
photocatalysis
has
emerged,
showing
one
many
openings
these
building
blocks
future.
Biotechnology and Applied Biochemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 18, 2025
ABSTRACT
Macrocyclic
calix[
n
]arenes
have
many
applications,
with
diverse
structures
that
can
easily
be
functionalized
either
on
upper
or
lower
rims,
mostly
to
impart
solubility
and
improve
biological
activities.
In
this
study,
triazole‐based
p
‐
tert
‐butylcalix[4]arene
conjugates
(
AT10a
AT10b
)
their
‐butylphenol
analogs
AT11b
were
synthesized
in
good
yields
characterized
using
13
C
NMR
1
H
experiments.
The
compounds
evaluated
for
antimicrobial
(AM)
activity
against
Gram‐positive
bacteria
Staphylococcus
aureus
,
Enterococcus
faecalis
Listeria
monocytogenes
),
Gram‐negative
Escherichia
coli
Salmonella
typhi
Pseudomonas
aeruginosa
fungi
Candida
albicans
tropicalis
minimal/minimum
inhibitory
concentration
(MIC)
values
varied
from
19
2500
µg/mL.
AM
activities
of
the
most
strains,
S.
aureus,
L.
C.
being
susceptible.
inhibited
violacein
synthesis
Chromobacterium
violaceum
CV12472
MIC
sub‐MIC
concentrations.
AT11a
all
showed
100%
inhibition
at
1/2
concentrations,
whereas
compound
had
85.1%
±
2.1%
90.7%
1.2%
inhibitions
MIC.
quorum
sensing
(QS)
CV026
MIC,
active
diameters
18.50
0.75
mm
11.50
0.47
(1/2
MIC).
QS
indicates
could
disrupt
communication
coordinated
behavior
bacteria.
swarming
swimming
motilities
P.
PA01
implying
they
reduce
spread
cross‐infections
through
surface
colonization.
concentration‐dependent
biofilm
a
range
pathogenic
sub‐MIC.
biofilms
susceptible
compared
others.
Inhibition
is
an
indication
possible
eradication
resistance
results
suggest
calixarene
derivatives
are
suitable
scaffolds
development
AMs,
which
quench
cell‐to‐cell
signaling
attenuate
virulence
factors
Molecular Systems Design & Engineering,
Год журнала:
2021,
Номер
6(12), С. 1056 - 1065
Опубликована: Янв. 1, 2021
Three
novel
phosphinoamines
based
on
phenylbenzothiazole
feature
excitation-dependent
room-temperature
phosphorescence
with
a
glowing
color
change
from
green
through
white
to
blue
upon
changing
the
excitation
wavelength.
Abstract
The
detection
of
ammonia
vapor
in
the
air
is
always
challenging
and
great
demand,
with
main
issues
are
their
low
sensitivity.
In
this
contribution,
we
developed
a
quartz
crystal
microbalance
(QCM)
gas
sensor
to
detect
using
electrospun
polyacrylonitrile
(PAN)
nanofiber
mixed
citric
acid
(CA)
as
its
sensing
material.
nanostructured
morphology
as‐prepared
sensors
was
confirmed
scanning
electron
microscopy
(SEM),
while
existence
CA
PAN/CA
confirms
Fourier
transform
infrared
(FTIR)
spectroscopy.
average
diameter
PAN
sample
found
range
260
nm
307
nm.
highest
sensitivity
obtained
by
PAN/CA4
value
0.28
Hz/ppm,
increasing
almost
4
times
compared
unmodified
(0.075
Hz/ppm).
Moreover,
also
shows
good
reversibility,
fast
response/recovery
time,
excellent
repeatability
performance.
addition
into
structures
enhances
sensitivity,
probably
due
enrichment
carboxyl
group
at
surface.
This
work
could
become
promising
alternative
way
enhance
QCM
modified
polymers
doped
suitable
compounds.
Symmetry,
Год журнала:
2023,
Номер
15(1), С. 157 - 157
Опубликована: Янв. 5, 2023
This
work
reports
the
synthesis
and
crystal
structure
of
new
closely
related
coordination
compounds,
[ML2]·nTHF,
where
M
is
Zn
or
Mn;
L
a
phosphorylmethylamide
derivative
benzothiadiazole;
n
=
1
(M
Zn)
1,
2
Mn);
THF
tetrahydrofuran.
The
zinc
compound,
1·THF,
crystallizes
in
high-symmetry
space
group,
I41/a,
that
relatively
rare
for
compounds
with
organic
ligands.
corresponding
manganese
congener,
2·THF,
similar
packing,
features
pseudosymmetrical
P21/c
doubled
volume
unit
cell
as
compared
to
1·THF.
main
difference
between
structures
lies
different
arrangement
solvate
molecules,
which
likely
modulates
packing
complexes.
Another
solvatomorph,
2·2THF,
reveals
fundamentally
while
exhibiting
geometry
complex.
We
consider
problem
localization
molecules
types
their
disorder
by
example
1–2.
Inorganics,
Год журнала:
2022,
Номер
10(9), С. 138 - 138
Опубликована: Сен. 15, 2022
We
report
a
comparative
study
of
coordination
behaviour
2-(2-aminophenyl)benzothiazole
(NH2-pbt)
and
its
phosphorus-containing
derivative,
α-aminophosphine
oxide
(PCNH-pbt),
towards
zinc
halides.
The
corresponding
compounds
[Zn(L)2Hal2]
(L
=
PCNH-pbt,
Hal
Cl,
1
Br,
2)
[Zn(L’)Hal2]
(L’
NH2-pbt,
3
4)
were
obtained
as
single
phases.
As
evidenced
by
single-crystal
X-ray
diffraction
analysis,
L’
ligand
coordinates
to
Zn
in
chelate
manner
via
two
N
atoms.
Despite
similar
mode
complexes
4,
the
spatial
geometry
differs
notably,
which
implies
relatively
high
flexibility
NH2-pbt.
L
exhibits
another
mode,
binding
with
only
oxygen
P=O
group.
differences
structures
their
counterparts,
2,
induce
solid-state
photoluminescence
properties.
former
group
conventional
single-band
emission,
while
latter
reveals
bands.
minor
band
at
450
nm
is
ascribed
radiative
transition
for
regular
amine
species,
major
520–550
can
be
associated
either
proton-transferred
imine
species
(ESIPT
mechanism)
or
charge
transfer
state
(TICT)
different
geometry.
ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
6(12), С. 6937 - 6945
Опубликована: Июнь 18, 2024
Sulfur
dioxide
(SO2)
is
a
hazardous
pollutant
that
significantly
poses
risk
to
human
health
and
the
environment.
However,
development
of
SO2
sensors
work
at
room
temperature
has
been
hindered
due
their
inadequate
recovery
properties.
In
this
context,
we
have
introduced
thiazole
decorated
conjugated
polymer
(BBT)
for
detection
25
°C.
Moreover,
improve
sensing
performance
°C
by
modifying
backbone
BBT
with
benzo[2,1,3]selenadiazole
ring
(BSe),
resulting
in
BBTBSe.
The
BBTBSe
sensor
exhibits
4.3×
higher
response
compared
sensor.
When
exposed
100
ppm
SO2,
show
values
(Rg/Ra)
199.4
45.7,
respectively,
rapid
response/recovery
time
60/70
s
Additionally,
both
excellent
selectivity
comparison
other
gases,
factor
greater
than
5.3.
linear
behavior
concentration
range
1–50
ppm,
limit
(LOD)
qualification
(LOQ)
0.23
0.76
ppb,
respectively.
also
complete
reversibility
repeatability
prolonged
stability.
possible
mechanism
proposed,
based
on
acid–base
dipole–dipole
interactions
between
lone
pair
nitrogen
gas
molecules.
As
result,
believe
results
offer
significant
opportunity
develop
high
sensitivity
selectivity,
expanding
its
application
medical
diagnosis
environmental
pollution
monitoring.
