Triphenylamine-porphyrin conjugates as antenna modular systems towards the detection of 1-hexanol through surface photovoltage under UV and visible light illumination using the scanning Kelvin probe
Prasanth Palanisamy,
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Mageshwari Anandan,
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Sheethal Sasi
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et al.
Sustainable materials and technologies,
Journal Year:
2025,
Volume and Issue:
43, P. e01239 - e01239
Published: Jan. 6, 2025
Language: Английский
Tuning Mn-MOF by Incorporating a Phthalocyanine Derivative as an Enzyme Mimic for Efficient EGFET-based Ascorbic Acid Detection
ACS Applied Materials & Interfaces,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 28, 2025
In
this
study,
we
present
the
effect
of
catalytic
performance
in
Mn-MOF
upon
incorporating
varied
concentrations
phthalocyanine
derivative
(H2PcP8OH16)
for
ascorbic
acid
detection
an
extended
gate
field-effect
transistor
(EGFET)
configuration.
The
fabricated
Mn-OM-MOF-2/CP
electrode
demonstrated
notable
selectivity
toward
physiological
conditions
sweat,
with
a
sensitivity
71.375
μA·mM–1·cm–2,
response
time
less
than
6
s,
and
linear
range
from
5
to
240
μM.
limit
(LOD)
quantification
(LOQ)
were
found
be
0.26
0.78
μM,
respectively.
Remarkably,
prepared
electrodes
followed
Michaelis–Menten
kinetics.
Among
them,
highest
affinity
acid,
Km
value
0.142
mM.
To
gain
deeper
insights
into
charge
transfer
mechanism
during
interaction
Mn-OM-MOF-2/CP,
employed
scanning
Kelvin
probe
(SKP)
technique
conducted
post-FTIR
analysis
understand
sensing
mechanism.
Additionally,
post-UV–visible
(UV–vis)
measurements
performed
explore
how
incorporation
enhances
affinity.
Additional
studies
using
standard
artificial
sweat
have
confirmed
electrode's
good
recovery.
Overall,
results
EGFET
method
suitability
rapid,
noninvasive,
single-use
1×
phosphate
buffer
saline
(1×
PBS).
Language: Английский
Porphyrinoid-Functionalized ZnO Nanoflowers for Visible Light-Enhanced and Selective Benzylamine Detection at Room Temperature
Sheethal Sasi,
No information about this author
Prasanth Palanisamy,
No information about this author
Rence Painappallil Reji
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et al.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(44), P. 61204 - 61217
Published: Oct. 22, 2024
Functionalization
of
hybrid
organic
molecules
as
layers
on
ZnO
nanoflowers
(NFs)
gives
an
excellent
combination
sensing
toward
visible
light
and
vapors
various
volatile
compounds
(VOCs).
In
this
work,
functionalized
NFs
were
utilized
for
the
photoinduced
detection
benzylamine
at
room
temperature.
The
synthesized
via
a
facile
solution
route
with
four
different
porphyrin-conjugated
namely
(i)
pyrene-porphyrin
(PP),
(ii)
pyrene-
porphyrinato
zinc
(ZnPP),
(iii)
triphenylamine-
porphyrin
(TP)
(iv)
(ZnTP).
diameter
flower-like
structure
was
found
to
be
∼3.2
μm
thickness
petals
being
∼24.1
nm.
gas
adsorption
performance
activation
temperature
studied
by
using
scanning
Kelvin
probe
(SKP)
system.
improved
properties
samples
can
attributed
heterojunctions
activation.
particular,
enhanced
response
ZnTP
(ZnTPZ)
observed.
Further,
static
experiments
ZnTPZ
under
concentrations
(1,
3,
5,
10,
15,
25
ppm)
both
in
dark
conditions
have
exhibited
linear
increase
response.
selectively
compared
that
pristine
thus
confirmed
1
ppm
benzylamine.
sensitivity
limit
sensor
calculated
0.0292
ppm-1
197
ppb,
respectively.
coordination
metal
(Zn)
has
helped
effective
charge
transfer
between
providing
additional
active
sites
interactions.
Also,
density
functional
theory
calculations
demonstrated
role
surface
improving
adsorption.
fresh
cabbage
real
sample
analysis
proposed
illumination
conditions,
obtained
low
evaluation
Overall,
results
suggest
development
novel
ZnTPZ-based
light-activated
sensors
These
kinds
used
track
freshness
vegetables
they
are
transported
from
farms
commercial
outlets.
Language: Английский
A Step Towards Non-Invasive Diagnosis of Diabetes Mellitus Using In-Situ Synthesized MOF-MXene Hybrid Material with Extended Gate Field-Effect Transistor Integration
Mallikarjuna Swamy Shabanur Matada,
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Rahul Suresh Ghuge,
No information about this author
Surya Velappa Jayaraman
No information about this author
et al.
Journal of Materials Chemistry B,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 2, 2024
Integration
of
MOF-MXene
hybrid
material
into
an
EGFET
configuration
for
enzyme-free
and
non-invasive
glucose
detection
to
diagnose
diabetes
mellitus.
Language: Английский