ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(32), С. 42794 - 42801
Опубликована: Авг. 1, 2024
The
development
of
pure
organic
room-temperature
phosphorescent
(RTP)
materials
greatly
facilitates
the
integrated
application
luminescent
materials.
Herein,
a
type
photoactivated
red
RTP
material
was
constructed
by
simply
doping
4-(benzo[c][1,2,5]thiadiazol-5-ylthio)benzonitrile
(p-NNS)
into
poly(methyl
methacrylate)
(PMMA)
matrix.
obtained
film
realized
controllable
photoactivation
process
regulation
diverse
solvent
levels,
demonstrating
potential
advantages
in
optical
anti-counterfeiting
applications.
Furthermore,
properties
doped
were
utilized
to
detect
oxygen
content
from
2.00%
4.90%,
which
revealed
exact
consumption
ambient
under
UV
light.
Every
CIE
point
luminescence
corresponds
certain
content,
illustrating
visualization
content.
remarkable
effect
and
this
work
will
provide
competitive
for
further
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(20)
Опубликована: Фев. 28, 2024
Abstract
Recently,
stimulus‐responsive
organic
materials
with
room‐temperature
phosphorescence
(RTP)
properties
have
attracted
significant
attention
owing
to
their
potential
applications
in
chemical
sensing,
anticounterfeiting,
and
displays.
However,
molecular
design
currently
lacks
systematicity
effectiveness.
Herein,
we
report
a
capture‐release
strategy
for
the
construction
of
reversible
RTP
via
B/N
Lewis
pairs.
Specifically,
acid
7‐bromo‐5,9‐dioxa‐13b‐boranaphtho[3,2,1‐de]anthracene
(BrBA)
can
be
deactivated
through
capturing
by
base,
N
,
‐diphenyl‐4‐(pyridin‐4‐yl)aniline
(TPAPy),
reactivated
dissociation
B−N
bonds
release
BrBA.
Reversible
is
attributed
exceptional
self‐assembly
capability
BrBA,
whereas
tunable
colors
are
derived
from
distinct
Förster
resonance
energy
transfer
(FRET)
processes.
The
information
storage
anti‐counterfeiting
were
also
experimentally
validated.
approach
proposed
this
study
offers
an
effective
designing
materials.
JACS Au,
Год журнала:
2024,
Номер
4(5), С. 1954 - 1965
Опубликована: Май 9, 2024
Materials
with
stimuli-responsive
purely
organic
room-temperature
phosphorescence
(RTP)
exempt
from
exquisite
molecular
design
and
complex
preparation
are
highly
desirable
but
still
relatively
rare.
Moreover,
most
of
them
work
in
a
single
switching
mode.
Herein,
we
employ
versatile
host-guest-doped
strategy
to
facilely
construct
efficient
RTP
systems
multimode
stimuli-responsiveness
without
ingenious
design.
By
conveniently
doping
butterfly-like
guests,
namely,
Chem & Bio Engineering,
Год журнала:
2024,
Номер
1(1), С. 13 - 25
Опубликована: Янв. 29, 2024
Recently,
organic
room-temperature
phosphorescence
(RTP)
materials,
especially
those
with
reversible
responses
to
external
stimuli,
have
attracted
extensive
attention.
A
dynamic
regulation
strategy
enables
the
materials
rapidly
respond
gifting
varied
RTP
performance
and
greater
application
potential
in
sensitive
sensing,
detection,
so
on.
For
these
reasons,
this
Review
summarizes
progress
of
recent
years.
It
focuses
on
physical
regulatory
factors
including
light,
heat,
mechanical
force
as
well
chemical
water,
pH,
oxygen.
is
expected
be
beneficial
for
developing
smart
future.
Abstract
Avoiding
the
tedious
process
of
crystal
cultivation
and
directly
obtaining
organic
crystals
with
desirable
phosphorescent
performance
is
great
significance
for
studying
their
structure
properties.
Herein,
a
set
benzophenone‐cored
phosphors
bright
green
afterglow
are
obtained
on
large
scale
through
in‐situ
generation
via
an
end‐capping
strategy
to
suppress
non‐radiative
triplet
excitons
reinforce
intermolecular
interactions.
The
ordered
arrangement
alkyl‐cyano
groups
as
regulators
crucial
enhancement
room‐temperature
phosphorescence
(RTP)
emission,
which
has
been
further
verified
by
attenuated
lifetimes
in
isolated
states
formation
inclusion
complexes
upon
binding
pillar[5]arenes.
Moreover,
hierarchical
interactions
phosphors,
including
hydrogen
bonding,
π‐π
stacking
interactions,
van
der
Waals
forces,
quantified
structures
theoretical
calculation
deeply
interpret
origins
RTP
emission.
With
this
study,
we
provide
potential
direct
acquisition
crystalline
modulation
RTP.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Июнь 13, 2024
Abstract
Photoluminescence
(PL)
colour-changing
materials
in
response
to
photostimulus
play
an
increasingly
significant
role
intelligent
applications
for
their
programmability.
Nevertheless,
current
research
mainly
focuses
on
photochemical
processes,
with
less
attention
PL
transformation
through
uniform
aggregation
mode
adjustment.
Here
we
show
photochromic
luminescence
organic
crystals
(e.g.
dimethyl
terephthalate)
varying
from
dark
blue
purple,
then
bright
orange-red,
and
finally
red.
This
change
is
attributed
the
emergence
of
clusters
red
emission,
which
barely
achieved
single-benzene-based
structures,
thanks
subtle
molecular
rearrangements
prompted
by
light.
Crucial
this
process
are
through-space
electron
interactions
among
molecules
moderate
short
contacts
between
ester
groups.
The
irradiated
exhibit
reversible
upon
sufficient
relaxation,
showing
promising
information
storage
smart
optoelectronic
devices.
contributes
development
luminescent
colour
transformations
rearrangement.
Polymeric
room-temperature
phosphorescence
(RTP)
materials
especially
multicolor
RTP
systems
hold
great
promise
in
concrete
applications.
A
key
feature
these
applications
is
a
triplet
charge
transfer
transition.
Aromatic
electron
donors
and
acceptors
are
often
essential
to
ensure
persistent
RTP.
There
much
interest
fabricating
non-aromatic
charge-transfer-mediated
it
still
remains
formidable
challenge
achieve
color-tunable
via
transfer.
Herein,
material
by
embedding
quinoline
derivatives
within
polymer
matrix
such
as
polyacrylamide
(PAM)
or
polyvinyl
alcohol
(PVA)
developed.
Through-space
(TSCT)
achieved
upon
alkali-
heat
treatment
realize
long
lifetime
of
up
629.90
ms,
high
quantum
yield
20.51%,
green-to-blue
afterglow
for
more
than
20
s
at
room
temperature.
This
emerges
from
nonaromatic
single
phosphor
that
has
rarely
been
reported
before.
finding
suggests
an
effective
simple
approach
can
deliver
new
including
display,
information
encryption,
gas
detection.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
63(8)
Опубликована: Дек. 20, 2023
Abstract
In
current
approaches
for
circularly
polarized
phosphorescent
materials,
the
crystallization
of
chiral
phosphors
suffers
from
poor
processability,
while
integrating
them
into
an
amorphous
polymer
matrix
results
in
unsatisfactory
chiroptical
signals
due
to
absence
chirality
communication.
Here,
we
have
developed
innovative
strategy
through
supramolecular
polymerization
benzil
facilitated
by
intermolecular
hydrogen
bonds.
The
inherent
film‐forming
capabilities
non‐covalent
polymers
obviate
need
external
matrix.
pronounced
helical
asymmetry
resulting
leads
enhanced
phosphorescence
compared
their
non‐hydrogen‐bonded
counterparts.
can
be
further
modulated
varying
location
stereogenic
centers
or
introducing
halogen
bonding
benzils.
Incorporation
platinum(II)
phosphor
induces
both
and
triplet‐to‐triplet
energy
transfer,
leading
a
change
color
yellow
red.
summary,
represents
novel
effective
approach
materials.
Advanced Optical Materials,
Год журнала:
2024,
Номер
12(15)
Опубликована: Фев. 13, 2024
Abstract
Development
of
purely
organic
room
temperature
phosphors
can
often
be
obtained
via
introduction
heavy
atoms
into
the
scaffold.
However,
task
controlling
emission
properties
in
phosphorescent
(RTP)
crystals
atom
substitution
has
met
limited
success.
Herein,
two
classes
molecules
(
NI
p
Br
1‐2
and
m
)
are
designed
by
varying
position
para
meta
as
well
number
bromo
substituents
1,8‐naphthalimide
to
modulate
intermolecular
interactions
their
phosphorescence
properties.
2
features
only
halogen
bonding.
,
NImBr
feature
H‐aggregation
crystalline
packing
wherein
efficiency
increases
<
.
also
bonding
addition
H‐aggregation.
Relative
intensity,
lifetime
quantum
yield
increase
order
B
r
endorsing
cruciality
bromine
positioning
numbering
tuning
RTP
performance.
Amplification
derivatives
over
congeners
leads
tunable
color
from
blue
orange.
These
results
outline
a
predictive
structure‐property
relationship
judicious
choice
both
help
regulating
behavior,
providing
major
step
forward
expanding
fundamentals
RTP.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 8, 2024
Abstract
Manipulating
and
optimizing
the
room
temperature
phosphorescence
(RTP)
behavior
of
organic
luminophores
is
highly
desirable
for
exploring
their
extensive
potential
applications.
However,
achieving
tailored
precise
control
over
RTP
emission
colors
remains
a
challenging
task.
Herein,
three
regioisomers,
namely
o
‐Br
,
m
p
‐Br,
are
developed
by
directly
bonding
nitrogen
atom
commercial
carbazole
sulfur
sulfonylbenzene
group.
This
design
not
only
features
bromine
substitution
at
different
positions
but
also
leads
to
formation
N─S═O
resonance
linkages.
With
variation
in
position
from
ortho
para
color
changes
yellow
red.
Experimental
investigations
theoretical
calculations
demonstrate
that
this
arises
modulation
contributions
canonical
forms
N─S═O,
which
can
be
attributed
regioisomerization
atoms
fine‐tuning
intra‐
intermolecular
interactions.
Additionally,
vitro
cell
imaging
successfully
realized
employing
red
nanoparticles
prepared
luminophore.
study
reveals
simple
effective
approach
customizing
through
integration
isomerization
control.
