Crystal Growth & Design,
Год журнала:
2024,
Номер
24(17), С. 7082 - 7091
Опубликована: Авг. 22, 2024
Purely
persistent
room-temperature
phosphorescence
(p-RTP)
materials
have
attracted
a
great
deal
of
attention
due
to
their
extensive
applications.
However,
trace
impurities,
which
are
formed
in
synthesis,
may
cause
an
unpredictable
effect
on
the
luminescence
properties.
In
this
work,
we
carefully
separated
and
purified
organic
compounds
eliminate
effects
impurities
luminescence,
managed
obtain
three
fascinating
afterglow
materials,
(p-mba)n
(PMBA),
{[Ca(p-mba)2(H2O)]}n
(Ca-PMBA),
[Sr(p-mba)2(H2O)]n
(Sr-PMBA),
based
pure
p-methoxybenzoic
acid
(p-mba).
It
is
found
that
resulting
PMBA
can
produce
long-lived
efficient
afterglow,
with
τafterglow
Φafterglow
reaching
up
1.08
s
27.94%,
respectively,
demonstrating
high
performance
field
phosphorescence.
Additionally,
Ca-PMBA
Sr-PMBA
two
rare
examples
showing
green
long-afterglow
0.95
(ΦPhos
=
4.44%)
0.53
9.72%),
these
rank
first
third
among
alkaline-earth
(AE)
metal-based
MOFs.
Inspired
by
distinctive
properties,
potential
applications
for
anticounterfeiting
information
encryption
been
explored
through
utilization
compounds.
Moreover,
our
results
clearly
demonstrate
had
no
remarkable
properties
above-mentioned
compounds,
different
from
previous
reports,
more
research
data
need
be
accumulated
analyzed
further
investigate
phosphorescent
Advanced Materials,
Год журнала:
2024,
Номер
36(18)
Опубликована: Янв. 25, 2024
Abstract
Long‐lived
and
highly
efficient
room
temperature
phosphorescence
(RTP)
materials
are
in
high
demand
for
practical
applications
lighting
display,
security
signboards,
anti‐counterfeiting.
Achieving
RTP
aqueous
solutions,
near‐infrared
(NIR)
emission,
NIR‐excited
crucial
bio‐imaging,
but
these
goals
pose
significant
challenges.
Supramolecular
self‐assembly
provides
an
effective
strategy
to
address
the
above
problems.
This
review
focuses
on
recent
advances
enhancement
of
via
supramolecular
self‐assembly,
covering
four
key
aspects:
small
molecular
cocrystals,
macrocyclic
hosts
guests,
multi‐stage
self‐assembly.
not
only
highlights
progress
areas
also
underscores
prominent
challenges
associated
with
developing
materials.
The
resulting
strategies
development
high‐performance
discussed,
aiming
satisfy
biomedical
science.
CrystEngComm,
Год журнала:
2024,
Номер
26(35), С. 4751 - 4765
Опубликована: Янв. 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.
Macromolecular Chemistry and Physics,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 8, 2025
Abstract
In
recent
years,
organic
room
temperature
phosphorescence
(RTP)
materials
have
been
well
developed.
Especially,
when
the
compounds
are
doped
into
a
rigid
polymeric
matrix,
their
RTP
performances
can
be
greatly
enhanced.
However,
dispersibility
and
stability
of
difficult
to
controlled.
Herein,
an
amorphous
homo‐polymer
(
P1
)
containing
naphthalimide
units
is
synthesized
further
dispersed
polyvinyl
alcohol
(PVA)
matrix
via
solution
mixing
procedure.
The
resultant
composites
P1@PVA
exhibit
yellow
afterglow
under
temperature.
,
chromophores
constrained
in
aggregation
state.
Unlike
crystalline
state,
intermolecular
interactions
between
aggregated
enhanced,
while
π–π
interaction
weakened.
presence
PVA,
non‐radiative
decay
synergistically
suppressed
by
external
hydrogen
bonds
internal
interactions.
As
results,
much
Comparing
with
PVA
compounds,
lifetime
prolonged
as
1.5
folds.
Chinese Journal of Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 18, 2024
Comprehensive
Summary
Considering
their
oriented
crystalline
structure
and
high
luminescent
efficiency,
the
exploration
of
multi‐component
organic
cocrystal
systems
with
tunable
supramolecular
nanostructures
potential
RGB
light
emission
has
emerged
as
a
captivating
but
challenging
subject.
Here,
we
propose
straightforward
synthetic
strategy
to
precisely
govern
assembly,
structure‐property
relationship
cocrystals.
By
employing
single‐crystalline
template‐assisted
epitaxial
growth
(SCT‐EG)
method,
two‐dimensional
(2D)
highly‐aligned
nanomeshes
are
firstly
developed
afford
an
exceptional
trichromatic
system,
triggering
cross‐modulation
white
(WLE)
remarkable
stability
regeneration
capacity
over
six
months.
The
transformation
from
random
1D
microstructures
uniformly‐oriented
2D
can
be
attributed
regulatory
competitive
intermolecular
π‐π,
CT
interactions,
partial
H
bond
interactions
among
Moreover,
successful
construction
system
holds
promise
generate
full‐color
display,
which
function
multicolor
inks
for
photonic
dynamic
recognition,
information
encryption,
decryption.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 24, 2024
Abstract
Organic
cocrystals
formed
through
multicomponent
self‐assembly
have
attracted
significant
interest
owing
to
their
clear
structure
and
tunable
optical
properties.
However,
most
cocrystal
systems
suffer
from
inefficient
long‐wavelength
emission
low
phosphorescence
efficiency
due
strong
non‐radiative
processes
governed
by
the
energy
gap
law.
Herein,
an
efficient
long‐lived
red
afterglow
is
achieved
using
a
pyrene
(Py)
system
incorporating
second
component
(NPYC4)
with
thermally
activated
delayed
fluorescence
(TADF)
ultralong
organic
(UOP)
The
(NPYC4‐Py)
not
only
inherits
excellent
luminescence
of
its
monomeric
counterparts,
but
also
exhibits
unique
dual‐mode
characteristics,
including
persistent
TADF
UOP
high
quantum
yield
58
%
lifetime
362
ms.
precise
stacking
distinctly
reveals
that
intermolecular
interactions
lock
formation
weaken
π‐π
between
NPYC4
Py,
thereby
stabilizing
excited
triplet
excitons.
Furthermore,
favorable
level
acts
as
bridge,
reducing
S
1
T
states
for
therefore
activating
Py.
This
research
provides
direct
insights
into
achieving
co‐crystallization.
