The
selectivity
of
novel
chemosensor,
based
on
modified
nitrobenzofurazan
(thereafter,
named
NBD-Morph),
has
been
investigated
for
heavy
metal
cations
(Co2+,
Pb2+,
Mg2+,
Ag+,
Cu2+,
Hg2+,
Ni2+,
and
Zn2+)
Detection.
ligand
NBD-Morph
was
characterized
through
spectroscopic
techniques
including
FT-IR
1H-NMR.
vibrational
frequencies
measured
in
the
proton
NMR
(1H)
chemical
shifts
were
accurately
predicted
employing
density
functional
theory
(DFT)
at
B3LYP
level
theory.
Additionally,
structural,
electronic,
quantum
properties
studied
discussed.
DFT
calculations
also
carried
out
to
investigate
complex
formation
ability
with
Co2+,
Ni2+
or
Zn2+
cations.
adsorption
energies
all
possible
conformations
are
compared
it
is
deduced
that
more
sensitive
selected
However,
evaluation
their
reactivity
using
QTAIM
topological
parameters
demonstrated
greater
complexation
toward
Cu2+
than
those
formed
by
Pb2+
Ag+.
Further,
molecular
electrostatic
potential
(MEP),
Hirshfeld
surfaces,
associated
2D-
fingerprint
plots
applied
a
detailed
study
H-bonding
donor-acceptor
NBD---X
(X=Pb2+,
Ag+
Ni2+)
complexes.
electron
localization
function
(ELF)
localized-orbital
locator
(LOL)
generated
charge
transfer
interactions
inside
electrochemical
analysis
supports
theoretical
findings
predicting
sensory
towards
Ultimately,
NBD-Ni2+
particularly
promoted
as
good
performance
sensor.
ACS Omega,
Journal Year:
2024,
Volume and Issue:
9(36), P. 37702 - 37715
Published: Aug. 28, 2024
The
design
and
synthesis
of
molecular
nanoswitches
using
organic
molecules
represent
a
crucial
research
field
within
electronics.
To
understand
the
switching
mechanisms,
it
is
essential
to
investigate
various
factors,
such
as
charge/energy
transfer,
electron
nonlinear
optical
properties
(NLO),
current-voltage
(I-V)
curves,
Joule-like
(LJL)
Peltier-like
(LPL)
intramolecular
phenomenological
coefficients,
well
energy
levels
highest
occupied
orbital
(HOMO)
lowest
unoccupied
(LUMO)
boundary
orbitals.
In
this
Article,
novel
approach
designing
nanoswitch
understanding
its
ON/OFF
mechanism
presented,
utilizing
quantum
theory
atoms
in
(QTAIM),
density
functional
(DFT),
Landauer
(LT).
These
analyses
contribute
significantly
deep
effects
electronic
systems.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(5), P. e26709 - e26709
Published: Feb. 23, 2024
The
selectivity
of
a
novel
chemosensor,
based
on
modified
nitrobenzofurazan
referred
to
as
NBD-Morph,
has
been
investigated
for
the
detection
heavy
metal
cations
(Co2+,
Pb2+,
Mg2+,
Ag+,
Cu2+,
Hg2+,
Ni2+,
and
Zn2+).
ligand,
4-morpholino-7-nitrobenzofurazan
(NBD-Morph),
was
characterized
using
spectroscopic
techniques
including
FT-IR
1H
NMR.
Vibrational
frequencies
obtained
from
proton
NMR
(1H)
chemical
shifts
were
accurately
predicted
employing
density
functional
theory
(DFT)
at
B3LYP
level
theory.
Furthermore,
an
examination
structural,
electronic,
quantum
properties
conducted
discussed.
DFT
calculations
employed
explore
complex
formation
ability
NBD-Morph
ligand
with
Co2+,
Zn2+
cations.
comparison
adsorption
energies
all
possible
conformations
reveals
that
exhibits
sensitivity
towards
ions,
Ni2+.
However,
assessment
their
reactivity
QTAIM
topological
parameters
demonstrated
ligand's
greater
complexation
toward
Cu2+
or
Ni2+
than
those
formed
by
Pb2+
Ag+.
Additionally,
molecular
electrostatic
potential
(MEP),
Hirshfeld
surfaces,
associated
2D-fingerprint
plots
applied
detailed
study
inter-molecular
interactions
in
NBD-Morph-X
(X
=
Ni2+)
complexes.
electron
localization
function
(ELF)
localized-orbital
locator
(LOL)
generated
investigate
charge
transfer
donor-acceptor
within
Electrochemical
analysis
further
corroborates
theoretical
findings,
supporting
prediction
NBD-Morph's
sensory
In
conclusion,
stands
out
promising
sensor
Results in Chemistry,
Journal Year:
2024,
Volume and Issue:
8, P. 101580 - 101580
Published: June 1, 2024
Photodynamic
therapy
(PDT)
is
based
on
the
reactive
oxygen
species
(ROS)
generated
by
light-activated
photosensitizers
in
presence
of
oxygen.
Phytochemicals
are
promising
natural
photosensitizers,
offering
a
potentially
less
toxic
alternative
for
cancer
treatments.
Nonlinear
optics
(NLO)
phenomena,
such
as
second-harmonic
generation
(SHG),
third-harmonic
(THG),
and
two-photon
absorption
(TPA),
can
enhance
light
interaction,
benefiting
photosensitizing
applications
PDT.
Analyzing
NLO
properties
phytochemicals
optimize
their
use
PDT
improving
photosensitizer
performance
efficacy.
This
study
aims
to
examine
selected
reported
polyherbal
formulation
understand
potential
effective
PDT,
thereby
advancing
treatment
options.
Quantum
computational
calculations
were
conducted
at
B3LYP/6311
G++(d,p)
level
theory
unveil
crucial
information
about
structural
geometry
nonlinear
optical
properties.
The
bandgap
aloe
emodin,
emodin
curcumin,
scopoletin
berberine,
furanocoumarin,
rubiadin
3.279
eV,
3.395
3.247
3.930
2.878
4.463
eV
3.546
respectively.
results
highlight
berberine
most
compound,
demonstrating
high
softness
low
hardness.
Curcumin
furanocoumarin
exhibit
distinct
electron-donating
accepting
tendencies,
respectively
In
MESP
map
scopoletin,
Rubiadin
electro-negative
region
highly
oriented
around
ketone
group
(=O)
partially
another
O
atom
pentagon.
compensating
electropositive
charge
was
distributed
elsewhere.
curcumin
electronegativity
while
electropositivity
observed
substituted
hydroxyl
functional
groups.
Berberine
electro
negative
very
it
more
electro-positive.
All
compounds
have
significantly
greater
dipole
moment
than
standard
Urea
(1.3732Debye),
specifically
Scopoletin
has
8
times
value
Urea.
Concerning
chemical
potential,
emerges
easily
reactive,
identified
chemically
reactive.
evaluation
properties,
including
(µ),
polarizability
(α),
mean
first
hyperpolarizability
(β),
underscores
superiority
making
activated
during
laser
irradiation.
exhibits
superior
marked
reactivity,
substantial
softness,
significant
hyperpolarizability,
among
studied
enhancing
efficacy
RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(26), P. 18646 - 18662
Published: Jan. 1, 2024
Organic
light
emitting
diode
(OLED)
and
organic
solar
cell
(OSC)
properties
of
ethyl
4-[(
E
)-(2-hydroxy-4-methoxyphenyl)methyleneamino]benzoate
(EMAB)
its
Pt
2+
,
Pd
Ni
Ir
3+
Rh
Zn
complexes
have
been
theoretically
studied
herein.