Advanced Optical Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 28, 2025
Abstract
Blue
is
one
of
the
three
primary
colors,
and
it
a
crucial
element
in
regulation
application
organic
room‐temperature
phosphorescence
(ORTP).
However,
considerable
Stokes
shift
small
molecules
presents
challenge
for
creating
blue
afterglow
materials.
To
address
this,
host‐guest‐doped
materials
are
prepared
by
selecting
compounds
with
similar
structures
self‐doping.
This
method
effectively
regulated
long‐lasting
phosphorescence.
Additionally,
persistent‐RTP
long‐persistent
luminescence
(LPL)
properties
can
be
further
enhanced
incorporating
rigid
or
flexible
polymer
network,
dense
environment
between
host
guest.
Remarkably,
lifetime
duration
polymer‐assisted
doped
≈5
times
greater
than
those
host‐guest
crystal
Apart
from
its
high
efficiency,
environmental
friendliness,
easy
synthesis,
this
ORTP
material
boasts
thermal
stability
flexibility.
Furthermore,
demonstrates
potential
applications
such
as
information
encryption
anti‐counterfeiting
across
various
media,
including
paper,
cotton
thread,
leaves.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(46)
Published: July 9, 2024
Abstract
In
recent
years,
there
is
a
growing
interest
in
developing
ultralong
organic
room‐temperature
phosphorescence
(ORTP)
with
lifetimes
the
range
of
seconds.
As
one
important
three
primary
colors,
blue
ORTP
an
indispensable
core
component
RTP
regulation
and
application,
however,
large
Stokes
shift
characteristics
pose
certain
challenges
ORTP.
Here,
new
family
phosphors
are
synthesized
realized
through
crystal
assembly
water
phase.
Remarkably,
compared
to
materials
obtained
phases,
enabled
long‐lived
up
2.3
s
quantum
yield
reached
as
high
29.27%.
addition
efficient
green
form,
such
dark
possessed
thermal
stability
flexible
tunability.
Moreover,
superiority
selected
components
demonstrated
by
comparing
them
polymer
proposed
show
great
potential
programmable
information
encryption/anti‐counterfeiting.
Smart Molecules,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 4, 2025
Abstract
Stimulus‐responsive
organic
room
temperature
phosphorescent
(RTP)
materials
have
received
significant
attention
in
bioimaging,
sensing,
and
data
storage
because
of
their
controllable
dynamic
variability
rapid
response.
Organic
co‐crystals,
with
tailor‐designed
optical
properties
through
manipulation
aggregate
structures,
proven
to
be
very
effective
elucidating
the
structure‐property
relationship
RTP
at
molecular
level.
Therefore,
enhancing
rigid
frameworks
that
promote
intersystem
crossing
is
a
valid
approach.
Notably,
realization
co‐crystal
performance
by
altering
components
or
adjusting
crystal
lattices
highly
appealing;
however,
this
has
not
been
fully
addressed.
In
study,
an
co‐crystal,
4,4′‐bipyridine
(44BD),
was
employed
as
host,
1,4‐diiodotetrafluorobenzene
(DITF)
4‐bromo‐2,3,5,6‐tetrafluorobenzoic
acid
(TFBA)
were
guests.
The
44BD‐DITF
exhibited
orange
RTP,
whereas
44BD‐TFBA
displayed
bright
yellow
RTP.
Crystal
analysis
theoretical
calculations
revealed
dense
packing
abundant
intermolecular
interactions
within
these
co‐crystals
are
crucial
for
emergence
both
show
reversible
acid/base
stimulus
response,
is,
exposure
hydrochloric
(HCl)
fumes
results
quenching
which
can
subsequently
restored
triethylamine
(TEA)
fumigation.
This
study
presents
approach
towards
switching
thus
offering
opportunities
development
stimulus‐responsive
next‐generation
applications.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 18, 2025
The
simultaneous
generation
and
stabilization
of
triplet
excitons
are
the
key
to
realizing
efficient
organic
room
temperature
phosphorescence
(RTP),
which
is
challenging
owing
obscure
mechanism
structure-property
relationships.
Herein,
a
strategy
lone-pair-mediated
multiple
through-space
interactions
(TSIs)
proposed
availably
induce
RTP.
By
incorporating
heteroatoms
facilitate
n-n
n-π
interactions,
lone
pairs
delocalized
throughout
structure,
resulting
in
dense
splitting
excited-state
energy
levels.
Thus,
more
matched
levels
with
small
gap
between
singlet
states
(ΔEST)
emerge,
intersystem
crossing
(ISC)
transition
channels
that
assist
generation.
strong
TSIs
also
effectively
rigidify
molecular
structures
thus
stabilize
for
radiation.
Furthermore,
manipulation
TSI
intensity
allows
efficiency
enhancement,
persistent
time
prolongation,
tolerance
high
temperatures
This
work
not
only
explores
fundamental
principle
RTP
from
new
view
but
provides
universal
ISC
promotion
triple
stabilization.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 16, 2024
Organic
phosphorescence
or
thermally
activated
delayed
fluorescence
(TADF)
scintillators,
while
effective
in
utilizing
triplet
excitons,
are
sensitive
to
temperature
changes,
which
can
impact
radioluminescence
performance.
In
this
study,
we
have
developed
a
type
of
temperature-adaptive
organic
scintillator
with
and
TADF
dual
emission.
These
scintillators
automatically
switch
modes
enabling
efficient
from
77
400
K.
The
highest
photoluminescence
quantum
yield
light
83.2%
78,229
±
562
photons
MeV
Chemical Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
Smart
optical
materials
with
tunable
fluorescence
and
room
temperature
phosphorescence
(RTP)
exhibit
promising
application
prospects
in
the
field
of
intelligent
switches,
information
security,
CrystEngComm,
Journal Year:
2024,
Volume and Issue:
26(35), P. 4751 - 4765
Published: Jan. 1, 2024
The
article
highlights
the
recent
developments
on
some
interesting
optical
traits
of
organic
charge
transfer
complexes.
Properties
like
room
temperature
phosphorescence,
thermally
activated
delayed
fluorescence,
circularly
polarised
luminescence,
etc.
,
are
summarized.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 23, 2024
Abstract
Double
phosphorescence
components
from
a
single
organic
molecule
is
rarely
reported
before
because
most
molecules
must
follow
Kasha's
rule
and
merely
emit
T
1
state.
We
discover
unique
phenomenon
of
conformation‐controlled
expression
double
components.
The
green
component
the
red
are
assigned
to
dinaphthylamine
moiety
pyrene
unit
N,N‐di(naphthalen‐2‐yl)pyren‐1‐amine
(NaPy),
respectively.
NaPy
shows
time‐dependent
excitation‐dependent
afterglow
color
change
in
copolymerized
MMA
film
at
room
temperature
due
simultaneous
However,
PMMA
MA
film,
just
expresses
component,
suggesting
that
matrix
rigidity
greatly
affects
via
altering
conformation
NaPy.
In
low‐rigidity
matrix,
dyanmic
free
rotation
triplet
excitons
relax
T1
state
inner
conversion
or
vibration
relaxation,
leading
sole
component.
high‐rigidity
highly
twisted
stabilized
limitation
2
return
S0
separately,
resulting
Thus,
follows
but
disobeys
matrix.
can
function
relatively
independently,
wide‐range
change.
