Advanced Optical Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 26, 2024
Abstract
Stimulus‐responsive
fluorescent
polymeric
materials
(
FPMs
)
that
can
change
their
states
via
external
stimuli
have
been
widely
applied
in
multi‐level
information
encryption
and
anti‐counterfeiting.
While
many
efforts
mainly
focused
on
the
design
of
dual‐stimuli
responsive
,
construction
orthogonal
photo‐
thermo‐regulation
systems
remains
a
challenge.
Here,
thermo‐responsive
hydrogels
PTFPHs
containing
capsules
with
phase
(PCMs),
photoresponsive
molecules
(DTE),
thermally
(TPA‐DCPP)
are
reported.
They
capable
reconfiguring
fluorescence
(none,
green,
yellow,
red)
thermo‐induced
resonance
energy
transfer
(FRET)
process.
Additionally,
not
only
thermochromic
property
be
regulated
by
modulating
composition
PCMs,
but
photochromic
properties
also
tuned
using
SDS
to
control
size
capsules.
The
developed
exhibited
high
contrast,
fast
response,
excellent
reversibility.
successfully
integrated
application
between
temperature
monitoring
works
represented
strategy
for
developing
multi‐stimuli
advanced
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 13, 2024
Vacancy-ordered
perovskites
and
derivatives
represent
an
important
subclass
of
hybrid
metal
halides
with
promise
in
applications
including
light
emitting
devices
photovoltaics.
Understanding
the
vacancy-property
relationship
is
crucial
for
designing
related
task-specific
materials,
yet
research
this
field
remains
sporadic.
For
first
time,
we
use
Connolly
surface
to
quantitatively
calculate
volume
vacancy
(V□,
□=vacancy)
vacancy-ordered
double
perovskite
(VDPDs).
A
between
void
fraction
structure,
photoluminescent
properties
humidity
stability
was
established
based
on
zero-dimensional
(0-D)
[N(alkyl)
Crystal Growth & Design,
Год журнала:
2024,
Номер
24(12), С. 5211 - 5221
Опубликована: Июнь 3, 2024
Molecular
crystals
with
desirable
structures
and
tunable
photoluminescence
are
highly
important
for
multiscenario
field
applications
as
lasers,
sensors,
light-emitting
devices.
However,
purposeful
controls
on
the
still
challenging
because
of
high
sensitivity
molecular
stackings
to
surroundings.
Herein,
solid-state
assembly
photoluminescent
behavior
nine
5-(9H-carbazol-9-yl)
isophthalic
acid
(CzIp)-based
have
been
crystallographically,
spectroscopically,
theoretically
investigated
by
incorporation
electron-deficient
acceptors
polar
solvent
molecules.
As
compared
self-aggregation
green-emissive
CzIp,
methanol-solvated
CzIp-CH3OH
hydrated
CzIp-H2O
exhibit
tailorable
structural
overlaps
π-stacked
CzIp–CzIp
dimers,
emitting
high-energy
cyan
blue
fluorescence
upon
excitation
UV
light.
These
blue-shifted
emissions
from
different
local
excited
states
dimers.
By
contrast,
six
cocrystals
1:1
2:1
stoichiometry
and/or
cocrystallized
constructed,
respectively,
π–π
stacked
CzIp-acceptor
or
pairs,
which
assembled
into
one-dimensional
ribbons
(for
CzIp-OFN,
CzIp-TCNB,
CzIp-DCTFB,
CzIp-TCNQ,
OFN
=
octafluoronaphthalene,
TCNB
1,2,4,5-tetracyanobenzene,
DCTFB
2,3,5,6-tetrafluoro-1,4-dicyanobenzene,
TCNQ
7,7,8,8-tetracyanoquinodimethane),
two-dimensional
sheet
CzIp-DITFB,
DITFB
1,4-diiodotetrafluorobenzene),
discrete
cyclic
tetramer
CzIp-TND,
TND
1,4,5,8-naphthalenetetracarboxdiimide)
through
intermolecular
hydrogen-
halogen-bonding
interactions.
emit
switchable
quenched
intense
blue,
green,
orange,
near-infrared
photoluminescence.
Further
comparisons
theoretical
calculations
demonstrate
that
wide-range
multicolor
luminescence
is
either
state
charge
transfer,
in
donor–acceptor
pair,
suitable
energy
levels,
band
gap,
well
rational
hole–electron
distributions,
manipulate
synergistically
transfer-induced
findings
offer
in-depth
insights
relationships
photoluminescence,
advancing
development
organic
optoelectronic
properties.
Abstract
A
pair
of
1,8‐naphthalimides
(NPIs)
were
designed
and
successfully
synthesized
through
embellishing
amino‐containing
NPI
with
4‐diethylaminosalicyladehyde
4‐diethylaminobenzaldehyde,
respectively.
Their
structures
fully
confirmed
by
1
H/
13
C
NMR,
HR‐MS
FT‐IR
spectroscopic
studies.
photophysical
properties
systematically
investigated
in
different
solvents
varied
polarity,
THF/water
mixtures
varying
water
fractions
(
f
w
),
THF
solvent
concentrations
NPIs.
It
inferred
that
the
distinct
differences
emission
between
two
NPIs
during
self‐assembled
process
could
be
ascribed
hydroxyl‐containing
allowed
excited‐state
intramolecular
proton
transfer
‐OH
CH=N
units
aggregation
state.
Interestingly,
solid
4‐diethylaminosalicyladehyde‐functionalized
exhibited
multi‐stimuli‐responsive
fluorescence
changes
involving
mechanofluorochromism
HCl/NH
3
vapor
stimulus‐induced
conversion.
However,
no
remarkable
change
was
observed
photoluminescence
(PL)
spectra
for
4‐diethylaminobenzaldehyde‐functionalized
under
stimuli
mechanical
force
organic
solvent.
Advanced Optical Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 26, 2024
Abstract
Stimulus‐responsive
fluorescent
polymeric
materials
(
FPMs
)
that
can
change
their
states
via
external
stimuli
have
been
widely
applied
in
multi‐level
information
encryption
and
anti‐counterfeiting.
While
many
efforts
mainly
focused
on
the
design
of
dual‐stimuli
responsive
,
construction
orthogonal
photo‐
thermo‐regulation
systems
remains
a
challenge.
Here,
thermo‐responsive
hydrogels
PTFPHs
containing
capsules
with
phase
(PCMs),
photoresponsive
molecules
(DTE),
thermally
(TPA‐DCPP)
are
reported.
They
capable
reconfiguring
fluorescence
(none,
green,
yellow,
red)
thermo‐induced
resonance
energy
transfer
(FRET)
process.
Additionally,
not
only
thermochromic
property
be
regulated
by
modulating
composition
PCMs,
but
photochromic
properties
also
tuned
using
SDS
to
control
size
capsules.
The
developed
exhibited
high
contrast,
fast
response,
excellent
reversibility.
successfully
integrated
application
between
temperature
monitoring
works
represented
strategy
for
developing
multi‐stimuli
advanced
