Quantifying Fluorescence Contrast of Latent Fingerprints Developed with Micro/Nanoparticles through Spectroscopic Analysis
Talanta,
Год журнала:
2025,
Номер
288, С. 127717 - 127717
Опубликована: Фев. 11, 2025
Язык: Английский
Multi‐Stimulus Responsive Nonconventional Fluorescent Supramolecular Polymeric Material
Macromolecular Chemistry and Physics,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 20, 2025
Abstract
Fluorescent
supramolecular
materials
have
attracted
a
lot
of
attention
over
the
past
few
decades.
However,
those
can
respond
to
multiple
stimuli
are
not
often
reported,
especially
for
nonconventional
fluorescent
materials.
Here,
material
is
reported
that
temperature/electrical
heating,
humidity,
volatile
acids/organic
amines,
and
mechanical
strain.
This
prepared
by
physical
mixing
oligomeric
polyethyleneimine
(o‐PEI)
polyacrylic
acid
(o‐PAA).
Although
they
almost
non‐fluorescent,
their
combination
produces
bright
fluorescence,
emission
bands
shift
longer
wavelengths
as
amount
o‐PAA
increases.
Calculations
based
on
Density
Functional
Theory
(DFT)
show
there
strong
noncovalent
interactions
between
o‐PEI
o‐PAA,
resulting
in
through‐space
conjugation
cluster‐triggered
emission.
By
studying
relationship
intensity,
temperature,
molecular
motion,
dependence
intensity
relaxation
time
established,
which
will
provide
insight
into
luminescence
origin
In
addition,
this
shows
good
self‐healing
ability.
The
luminescence,
responsiveness
self‐reparability
all
related
but
reversible
bonds
link
o‐PAA.
work
only
highlights
value
polymers,
also
enriches
research
Язык: Английский
Strategies for Enabling RGB Emission in Fused Carbazole Derivatives
Chemistry - An Asian Journal,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 1, 2025
The
development
of
organic
light-emitting
diodes
(OLEDs)
has
witnessed
remarkable
progress
in
material
design
and
device
architecture.
Recent
advancements,
particularly
the
fourth
generation
OLEDs,
have
introduced
groundbreaking
innovations
such
as
hyperfluorescence
multiresonance
(MR)
thermally
activated
delayed
fluorescence
(MRTADF)
emitters.
Carbazole
emerged
a
versatile
scaffold,
playing
pivotal
role
conventional
fluorescence,
TADF,
roomtemperature
phosphorescence
(RTP),
MRTADF
systems.
In
recent
years,
fused
carbazole
derivatives
gained
significant
attention
both
emitting
host
materials
OLEDs.
fusion
units
enhances
molecular
rigidity
extends
πconjugation,
enabling
precise
tuning
optoelectronic
properties
across
wide
color
gamut,
including
blue,
green,
orange,
yellow,
red
emissions.
This
review
systematically
explores
application
various
systems
indolocarbazole,
thienocarbazole,
furocarbazole,
indenocarbazole,
triazatruxene,
acridinecarbazole,
chromenocarbazole,
pyrenocarbazole,
helicene
carbazole,
carbazolefused
boron/carbonyl
emitters
discussion
is
organized
into
three
sections
based
on
their
providing
comprehensive
understanding
structure-property
relationships.
Additionally,
other
color-emitting
OLEDs
are
discussed
where
relevant,
offering
holistic
perspective
potential
next-generation
OLED
technologies.
Язык: Английский