Yellow
phosphorescence
emission
of
1,8-naphthalimide
guest
was
activated
by
doping
it
into
m-bromobenzaldehyde
host
(energy
transfer
mechanism).
With
the
aim
alleviating
triplet-triplet
annihilation
benzaldehyde
itself,
m-dibromobenzene
introduced
as
third
component.
As
a
result,
quantum
yields
doped
crystallized
materials
significantly
increase
from
1.72%
for
NI@mBA
to
19.17%
NI@mBA@mDBB
(with
11
times
enhancement)
due
cascade
activation
in
three-component
system.
The
encryption/decryption
using
these
phosphorescent
provides
potential
application
security
field.
This
study
not
only
expands
scope
organic
molecules
capable
activating
properties
NI,
but
also
platform
developing
multi-component
systems
that
can
effectively
regulate
properties.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(10)
Published: Jan. 19, 2024
Abstract
In
this
work,
full‐color
and
stable
white
organic
afterglow
materials
with
outstanding
water,
solvents,
temperature
resistances
have
been
developed
for
the
first
time
by
embedding
selected
polycyclic
aromatic
hydrocarbons
into
melamine‐formaldehyde
polymer
via
solution
polymerization.
The
quantum
yields
lifetimes
of
resulting
films
were
up
to
22.7
%
4.83
s,
respectively,
under
ambient
conditions.
For
coronene‐doped
sample,
its
color
could
be
linearly
tuned
between
yellow
blue
adjusting
temperature,
it
still
emit
an
intense
a
lifetime
0.68
s
at
440
K.
Moreover,
showed
bright
370
K
2.80
maintained
excellent
performance
after
soaking
in
water
solvents
more
than
150
days.
addition,
application
potential
information
encryption
anti‐counterfeiting
was
also
demonstrated.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(7)
Published: Nov. 3, 2023
Abstract
Organic
room
temperature
phosphorescent
(ORTP)
materials
have
garnered
significant
interest
in
the
fields
of
anti‐counterfeiting,
optical
display,
and
bio‐imaging
owing
to
their
distinctive
properties.
However,
a
major
drawback
most
existing
ORTP
is
short
phosphorescence
lifetime
low
quantum
yields
(QYs),
which
greatly
limit
applicability
across
multiple
fields.
In
this
paper,
covalently
assisted
host‐guest
doping
strategy
that
involves
embedding
three
aminobenzoic
acids
with
different
carboxylate
substitution
positions
into
cyanuric
acid
(CA)
matrix
through
covalent
bonding
using
microwave
heating
proposed.
All
prepared
exhibit
long
exceeding
600
ms
high
(PhQYs)
surpassing
20%.
Among
them,
composite
2‐aminoterephthalic
(2‐A)
anuric
stands
out
its
unique
blue
phosphorescence,
boasting
an
exceptional
absolute
photoluminescence
yield
(PLQY)
98.95%
remarkable
(PhQY)
76.42%,
along
800
ms.
Importantly,
these
high‐performance
been
successfully
utilized
anti‐counterfeiting
display
applications.
FlexMat.,
Journal Year:
2024,
Volume and Issue:
1(2), P. 173 - 192
Published: June 14, 2024
Abstract
Purely
organic
room
temperature
phosphorescence
(RTP)
materials
have
shown
broad
application
prospects
in
light‐emitting
diodes
(OLEDs)
due
to
their
theoretical
100%
exciton
utilization,
cost‐effectiveness,
and
flexibility.
In
recent
years,
with
the
deepening
of
research,
various
luminescent
mechanisms
been
proposed,
RTP
made
significant
progress,
which
effectively
applied
OLEDs.
This
article
comprehensively
reviews
research
progress
OLEDs
introduces
development
a
series
high‐efficiency
from
perspective
molecular
design
strategies
photophysical
properties.
These
conclusions
draw
roadmap
address
inherent
challenges
utilizing
specifically
advance
investigation
Chemistry - An Asian Journal,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 23, 2025
Abstract
To
date,
organic
room‐temperature
phosphorescent
(RTP)
materials
have
received
much
attention
due
to
their
long
lifetime
and
large
Stokes
shift,
been
widely
used
in
anti‐counterfeiting
encryption,
bio‐imaging,
sensing
monitoring.
Researchers
a
variety
of
approaches
construct
ultra‐long,
efficient
RTP
materials,
with
the
confinement
chromophores
polymers
being
favored
improve
performance.
The
polymer
entanglement
structure
restricts
vibration
rotation
chromophore,
which
successfully
suppresses
non‐radiative
excitation
triplet
exciton
protects
from
external
environment
(oxygen,
water),
is
conducive
realization
ultra‐long
bright
emission,
makes
material
easy
process,
broadens
application
range
material.
This
review
summarizes
recent
advances
study
polymeric
underlying
mechanisms
design
strategies,
discusses
properties
amorphous
crystalline
respectively,
as
well
latest
applications
polymers,
finally
challenges
for
development
outlook
future.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 6, 2025
Abstract
Organic
phosphorescence
holds
significant
potential
for
its
important
applications
in
sensors,
optoelectronics,
and
security
technologies.
However,
achieving
long‐lived
blue
phosphorescence,
particularly
at
high
temperatures,
remains
a
challenge.
In
this
work,
an
unusual
thermally
enhanced
is
investigated
observed
readily
synthesized
polymer
(P1),
which
created
by
copolymerizing
acrylamide
with
phenyl
terpyridine‐containing
monomer
(M1).
Remarkably,
P1
exhibits
ultra‐long
cyan
493
nm
lifetime
of
1.04
s
room
temperature
450
when
exposed
to
150
°C.
Experimental
simulation
results
suggest
that
the
high‐temperature
originates
from
activated
rotation
terpyridine
group,
triggering
conformational
transition
low‐energy
Iso2
high‐energy
Iso3
state.
Furthermore,
heat‐resistant
phosphorescent
can
be
easily
fabricated
into
optical
waveguide
low
loss
coefficient,
making
it
suitable
high‐performance
switches.
This
work
provides
novel
strategy
designing
high‐temperature‐resistant
materials,
promising
advanced
photonic
optoelectronic
devices.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(44)
Published: Oct. 8, 2024
Abstract
Chiral
recognition
is
crucial
for
applications
in
chiral
purity
assessment
and
biomedical
fields.
However,
achieving
through
visible
room
temperature
phosphorescence
remains
challenging.
Here,
two
molecules,
designated
as
host
guest
are
synthesized,
which
possess
similar
structural
configurations.
A
viable
strategy
involving
a
configuration‐dependent
energy
transfer
process
to
enable
selective
expression
proposed,
thereby
enabling
host‐guest
doping
system.
The
similarity
between
facilitates
efficient
Dexter
due
the
reduced
spatial
distance
molecules.
This
mechanism
significantly
enhances
intensity
of
red
from
molecule,
characterized
by
an
emission
peak
at
612
nm
prolonged
lifetime
32.7
ms.
work
elucidates
chiral‐dependent
transfer,
demonstrating
its
potential
selectively
expressing
recognition.
We
report
a
series
of
dibenzyl
isophthalates
(DBIs)
as
versatile
hosts
for
room-temperature
phosphorescence
(RTP)
systems,
leading
to
host-guest
systems
with
quantum
yields
(QY)
up
77
%
or
lifetimes
21.0
s
the
guest
coronene
d12.
Furthermore,
4,4’-Br
substituted
DBI
was
used
form
RTP
15
different
aromatic
molecules,
tune
emission
color
from
blue
red
and
demonstrate
versatility
host.
Mechanistic
insights
were
gained
through
host-guest-matrix
system
which
shows
already
by
trace
combinations
4,4’
Br
host
(0.10
wt%)
pyrene-d10
(0.01
in
an
otherwise
non-RTP-emissive
matrix
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(10)
Published: Jan. 19, 2024
Abstract
In
this
work,
full‐color
and
stable
white
organic
afterglow
materials
with
outstanding
water,
solvents,
temperature
resistances
have
been
developed
for
the
first
time
by
embedding
selected
polycyclic
aromatic
hydrocarbons
into
melamine‐formaldehyde
polymer
via
solution
polymerization.
The
quantum
yields
lifetimes
of
resulting
films
were
up
to
22.7
%
4.83
s,
respectively,
under
ambient
conditions.
For
coronene‐doped
sample,
its
color
could
be
linearly
tuned
between
yellow
blue
adjusting
temperature,
it
still
emit
an
intense
a
lifetime
0.68
s
at
440
K.
Moreover,
showed
bright
370
K
2.80
maintained
excellent
performance
after
soaking
in
water
solvents
more
than
150
days.
addition,
application
potential
information
encryption
anti‐counterfeiting
was
also
demonstrated.
Polymer-based
organic
room
temperature
phosphorescence
(RTP)
materials
are
of
critical
importance
in
light-emitting
diodes,
displays,
and
anti-counterfeiting
applications.
Nevertheless,
the
development
heavy-atom-free
that
exhibit
long
RTP
lifetimes
high
quantum
yields
via
a
straightforward,
cost-effective,
environmentally
friendly
preparation
remains
significant
challenge.
In
this
study,
we
design
construct
an
sustainable
highly
efficient
hydrogen-bonding
network
(QA/PAM)
employing
commercially
available
quinoline
carboxylic
acid
(QA)
derivatives
water-soluble
polymer
polyacrylamide
(PAM)
with
hydrogen
bond
capacity.
By
increasing
conjugation
degree
number
carboxyl
groups
QA,
can
effectively
enhance
π-π*
n-π*
transitions,
thereby
reducing
energy
gap
between
S1
T1
states,
resulting
offering
ability
to
adjust
colors
from
blue
green
subsequently
yellow-green.
Particularly,
BQDA/PAM-0.3
wt%
system
shows
average
lifetime
392.46
ms
QY
26.93%
under
300
nm
excitation
at
297
K.
Anti-counterfeiting
patterns
2D
code
fabricated
by
BQDA/PAM
solution
screen
printing
be
facilely
deciphered
mobile
phone,
potential
applications
optical
digital
information
security
for
commercial
production.
