ChemistrySelect,
Journal Year:
2025,
Volume and Issue:
10(4)
Published: Jan. 1, 2025
Abstract
If
optical
probes
with
different
sensitivity
could
be
performed
simultaneously
in
their
hard
states
(e.g.,
film),
soft
gel),
and
solution
states,
sensing
accuracy
enhanced
due
to
the
highly
mutual
calibration.
The
biomass
of
cellulose
nanocrystals
is
less
compatible
commonly
used
organo‐fluorescent
dyes
require
chemical
modification
improve
application
performance,
but
this
leads
less‐effective
material
cost.
In
work,
depending
on
electrostatic
attractions
between
negatively
charged
polymer
matrix
cationic
dyes,
(CNCs)‐based
emissive
membranes
were
prepared
by
vacuum
filtration
method.
Then,
resulting
materials
transformed
into
hydrogels,
or
dispersed
water
solutions,
further
absorbed
commercially
available
spheres
filter
papers,
devices
states.
It
worth
mentioning
that
preparation
process
does
not
addition
organic
dispersants,
thus
greatly
reducing
Finally,
behaviors
toward
several
important
stimuli,
such
as
temperature,
pollutants
like
Cr
(VI)
pH
changes,
successfully
carried
out.
Overall,
our
research
works
highlighted
a
processable
way
fabricate
fluorescent,
water‐dispersible,
portable,
long‐time‐storable,
cost‐effective
sensors
meet
versatile
requirements.
Superwetting
surfaces
have
attracted
considerable
attention
in
analytical
fields
due
to
their
unique
ability
concentrate
target
analytes
within
evaporating
droplets,
characterized
by
a
constant
contact
angle
and
centripetal
mobile
line.
While
previous
studies
underscored
the
resistance
of
superslippery
coffee-ring
effect,
our
research
presents
novel
strategy
that
dynamically
introduces
effect
on
such
for
visual
detection.
By
harnessing
synergistic
interaction
between
line
properties
surface,
work
leverages
affinity
recognition
functionalized
surface
analyte
droplet
create
defects
pinning,
thereby
generating
coffee
rings
enabling
qualitative
detection
based
distinct
patterns.
Moreover,
we
establish
linear
relationship
where
coffee-ring's
diameter
decreased
with
increasing
initial
concentration,
facilitating
quantitative
As
proof
concept,
demonstrate
naked-eye
capability
using
streptavidin
dilutions
ranging
from
10–7
10–11
M
Escherichia
coli
concentrations
108
104
CFU/mL,
visualized
suspended
micro-/nanoparticles.
To
best
knowledge,
it
is
first
time
utilized
pinning
ring
formation,
both
This
offers
user-friendly
easily
interpretable
method,
making
particularly
advantageous
point-of-care
testing.
Chemosensors,
Journal Year:
2025,
Volume and Issue:
13(4), P. 149 - 149
Published: April 18, 2025
Heavy
metal
ion
(HMI)
contamination
poses
significant
threats
to
public
health
and
environmental
safety,
necessitating
advanced
detection
technologies
that
are
rapid,
sensitive,
field-deployable.
While
conventional
methods
like
atomic
absorption
spectroscopy
(AAS)
inductively
coupled
plasma
mass
spectrometry
(ICP-MS)
remain
prevalent,
their
limitations—including
high
costs,
complex
workflows,
lack
of
portability—underscore
the
urgent
need
for
innovative
alternatives.
This
review
consolidates
advancements
in
last
five
years
microfluidic
HMI
detection,
emphasizing
transformative
potential
through
miniaturization,
integration,
automation.
We
critically
evaluate
synergy
microfluidics
with
cutting-edge
materials
(e.g.,
graphene
quantum
dots)
mechanisms
(electrochemical,
optical,
colorimetric),
enabling
ultra-trace
at
parts-per-billion
(ppb)
levels.
highlight
novel
device
architectures,
such
as
polydimethylsiloxane
(PDMS)-based
labs-on-chip
(LOCs),
paper-based
microfluidics,
3D-printed
systems,
digital
(DMF),
which
offer
unparalleled
portability,
cost-effectiveness,
multiplexing
capabilities.
Additionally,
we
address
persistent
challenges
selectivity
scalability)
propose
future
directions,
including
AI
integration
sustainable
fabrication.
By
bridging
gaps
between
laboratory
research
practical
deployment,
this
provides
a
roadmap
next-generation
solutions,
positioning
them
indispensable
tools
global
monitoring.
