Enhancing elevated temperature performance of alkali activated slag-dolomite concrete with Fly ash
Arjun Raj P.K.,
Ravi Joshi,
D Sarath
и другие.
Physics and Chemistry of the Earth Parts A/B/C,
Год журнала:
2025,
Номер
138, С. 103857 - 103857
Опубликована: Янв. 11, 2025
Язык: Английский
Conformational Stability of α-Lactalbumin and Lysozyme in Ammonium-Based Ionic Liquids: A Comprehensive Insight into Structure–Activity Relationship
Industrial & Engineering Chemistry Research,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 22, 2025
Язык: Английский
Unravelling Optical Properties and Self-Assembly Behavior of Ciprofloxacin in Ionic Liquid Environments: Probing the Role of Cationic Residues and Counter Anions
Dalton Transactions,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
This
study
investigated
the
interaction
of
ciprofloxacin
(CIP)
with
three
different
ionic
liquids
(ILs)
featuring
distinct
cationic
residues
(pyrrolidinium,
IL1,
vs.
imidazolium,
IL2,
bis(trifluoromethylsulfonyl)imide
as
counter
anion)
and
anions
bis(trifluoromethylsulfonyl)imide,
hexafluorophosphate,
IL3,
imidazolium
residue)
in
an
aqueous
environment.
A
series
spectroscopic
studies
have
been
performed
to
elucidate
role
ILs
optical
properties
well
aggregation
behavior
CIP.
The
fluorescence
quenching
experiment
indicated
that
IL
a
pyrrolidinium
residue
showed
stronger
binding
CIP,
while
was
preferred
anion.
These
effects
might
be
attributed
complex
formation
mediated
by
charge-pair
cation-π
interactions,
along
hydrogen
bonding.
Stern-Volmer
analysis
confirmed
static
mechanism,
constants
(Kb)
reflecting
affinity
IL1
due
hydrophobic
butyl
group
flexible
cation,
resulting
larger
aggregates.
In
contrast,
IL2
facilitated
π-π
hydrogen-bond
disrupting
CIP
smaller
clusters.
polarizable
nature
its
bond-accepting
ability
enabled
containing
this
anion
compared
hexafluorophosphate-containing
ILs.
Further
pH
6
is
optimum
for
CIP-IL
where
remained
zwitterionic
form.
Increased
temperature
strength
diminished
efficiency,
consistent
reduced
stability
complexes
under
such
conditions.
Язык: Английский
Porphyrinic metal-organic framework PCN-224 supported Prussian blue enables selective detection of casein and phytic acid
Talanta,
Год журнала:
2025,
Номер
unknown, С. 128121 - 128121
Опубликована: Апрель 1, 2025
Язык: Английский
Hydrogen-Bond-Assisted Dual-Mode Ratiometric Detection of Uric Acid Using Pyrimidine-Driven Charge Transfer Probes: From Mechanistic Studies to Real-Life Applications
ACS Applied Bio Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 30, 2025
The
study
highlights
the
design,
synthesis,
and
photophysical
evaluation
of
two
pyrimidine-based
charge
transfer
probes
(compounds
1
2)
for
selective
detection
uric
acid
(UA)
in
aqueous
environments
biological
fluids.
Both
exhibited
distinct
spectral
responses
attributable
to
their
structural
differences,
with
compound
demonstrating
superior
sensitivity.
Quantitative
analysis
revealed
a
strong
linear
correlation
(R2
=
0.998)
between
UA
concentration
fluorescence
intensity,
enabling
as
low
0.12
μM,
which
is
well
within
clinically
relevant
range.
Mechanistic
investigations
confirmed
indispensable
role
pyrimidine
unit
forming
multipoint
hydrogen-bonding
interactions
UA,
induced
spectroscopic
changes
disrupted
probe
aggregates.
Environmental
factors
such
pH,
polarity,
temperature
were
systematically
examined,
revealing
that
performance
was
optimal
at
moderate
pH
(4-8)
60-70%
water
content,
elevated
temperatures
(50
°C)
enhancing
response
due
dissociation
supramolecular
Screening
diluted
human
urine
validated
practical
applicability
probe,
high
recovery
rates
minimal
matrix
interference.
also
utilized
HeLa
cells.
Also,
chemically
modified
paper
strips
developed
rapid,
on-site
UA.
Язык: Английский
Membrane-Bound Bisindolyl-Based Chromogenic Probes: Analysis of Cyanogenic Glycosides in Agricultural Crops for Possible Remediation
ACS Applied Bio Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 10, 2024
Cyanogenic
glycosides
are
plant-derived,
nitrogen-containing
secondary
metabolites
that
release
toxic
cyanide
ions
upon
hydrolysis
by
glycosidic
enzymes.
Therefore,
consuming
food
items
enriched
with
such
compounds
without
proper
remediation
can
cause
acute
intoxication.
Thus,
in
this
work,
we
utilize
cyanide-responsive
oxidized
bisindole-based
chromogenic
probes
to
detect
cyanogenic
glycosides,
as
amygdalin
and
linamarin
(LOD:
0.12
μM),
phospholipid
membranes.
The
bilayer
surface,
owing
its
distinct
microenvironment,
enhances
both
the
sensitivity
specificity
of
toward
amygdalin.
response
(red
yellow)
is
influenced
nature
lipid
membrane
(order,
polarity,
interfacial
hydration)
well
number
bis-indolyl
units
probe
molecules.
Semiquantitative
analysis
samples
before
after
cooking
revealed
soaking
water
at
room
temperature
significantly
reduces
glycoside
content.
ability
directly
pretreatment
a
notable
aspect
investigation.
Язык: Английский
Can Conformational Flexibility Influence the Self-Assembly Behavior and Sensing Efficacy of Fluorogenic Amphiphiles? A Case Study with Bisbenzimidazole based Probes
Analytical Methods,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 13, 2024
In
this
work,
we
have
explored
the
metal
ion
sensing
properties
of
two
bisbenzimidazole-based
fluorescent
probes,
that
differ
in
their
conformational
flexibility,
an
aqueous
medium.
The
compound
with
a
flexible
methyl
spacer
(1)
experienced
blue
shifts
its
absorption
and
emission
maxima
(along
turn-off
response)
upon
addition
Hg2+
ions.
On
contrary,
relatively
rigid
structure
(2)
showed
red
both
when
treated
under
similar
conditions.
Detailed
mechanistic
studies
indicated
1
formed
:
2
complex
ions,
where
pyridine
nitrogen
ends
benzimidazole
units
are
involved
coordination.
However,
for
2,
binding
stoichiometry
changed
to
ions
remained
connected
only
through
ends.
Not
did
changes
molecular
level
interactions
alter
optical
response,
but
they
also
altered
efficacy
sensing;
degree
response
was
more
prominent
than
2.
Also,
it
observed
could
dissociate
preformed
aggregated
structures
1,
while
case
promotes
aggregate
formation.
sensor
further
utilized
analysis
real-life
water
samples
detection
intracellular
conditions
(HeLa
cells).
Язык: Английский