Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(33), P. 18260 - 18275
Published: Aug. 2, 2023
Photon
energy
conversion
can
be
accomplished
in
many
different
ways,
including
the
two
opposing
manners,
down-conversion
(i.e.,
singlet
fission,
SF)
and
up-conversion
triplet-triplet
annihilation
up-conversion,
TTA-UC).
Both
processes
have
potential
to
help
overcome
detailed
balance
limit
of
single-junction
solar
cells.
Tetracene,
which
energies
lowest
excited
state
twice
triplet
are
comparable,
exhibits
both
down-
up-conversion.
Here,
we
designed
meta-diethynylphenylene-
1,3-diethynyladamantyl-linked
tetracene
dimers,
feature
electronic
coupling,
characterize
interplay
between
intramolecular
SF
(intra-SF)
TTA-UC
(intra-TTA-UC)
via
steady-state
time-resolved
absorption
fluorescence
spectroscopy.
Furthermore,
used
Pd-phthalocyanine
as
a
sensitizer
enable
intra-TTA-UC
dimers
indirect
photoexcitation
near-infrared
part
spectrum.
The
work
is
rounded
off
by
temperature-dependent
measurements,
outline
key
aspects
how
thermal
effects
impact
intra-SF
dimers.
Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
52(4), P. 1331 - 1381
Published: Jan. 1, 2023
A
comprehensive
summary
and
deep
insights
into
the
synthesis,
characterization
multi-functional
device
applications
of
n-type
ambipolar
organic
semiconductors
are
provided
in
this
study.
ACS Nano,
Journal Year:
2023,
Volume and Issue:
17(4), P. 3259 - 3288
Published: Feb. 17, 2023
Using
light
to
control
matter
has
captured
the
imagination
of
scientists
for
generations,
as
there
is
an
abundance
photons
at
our
disposal.
Yet
delivering
beyond
surface
many
photoresponsive
systems
proven
challenging,
particularly
scale,
due
attenuation
via
absorption
and
scattering
losses.
Triplet–triplet
annihilation
upconversion
(TTA-UC),
a
process
which
allows
low
energy
be
converted
high
photons,
poised
overcome
these
challenges
by
allowing
precise
spatial
generation
its
nonlinear
nature.
With
wide
range
sensitizer
annihilator
motifs
available
TTA-UC,
researchers
seek
integrate
materials
in
solution
or
solid-state
applications.
In
this
Review,
we
discuss
nanoengineering
deployment
strategies
highlight
their
uses
recent
state-of-the-art
examples
TTA-UC
integrated
both
Considering
implementation
tactics
application-specific
requirements,
identify
critical
needs
push
TTA-UC-based
applications
from
academic
curiosity
scalable
technology.
Chemical Reviews,
Journal Year:
2023,
Volume and Issue:
123(18), P. 10877 - 10919
Published: Sept. 8, 2023
The
interaction
between
molecular
electronic
transitions
and
electromagnetic
fields
can
be
enlarged
to
the
point
where
distinct
hybrid
light-matter
states,
polaritons,
emerge.
photonic
contribution
these
states
results
in
increased
complexity
as
well
an
opening
modify
photophysics
photochemistry
beyond
what
normally
seen
organic
molecules.
It
is
today
evident
that
polaritons
offer
opportunities
for
photophysics,
which
has
caused
ever-rising
interest
field.
Focusing
on
experimental
landmarks,
this
review
takes
its
reader
from
advent
of
field
polaritonic
chemistry,
over
split
into
polariton
chemistry
photochemistry,
present
day
status
within
photophysics.
To
introduce
field,
starts
with
a
general
description
interactions,
how
enhance
these,
characterizes
coupling
strength.
Then
strongly
coupled
systems
using
Fabry-Perot
plasmonic
cavities
are
described.
This
followed
by
room-temperature
Bose-Einstein
condensation/polariton
lasing
systems.
ends
discussion
benefits,
limitations,
future
developments
strong
exciton-photon
ACS Materials Letters,
Journal Year:
2023,
Volume and Issue:
5(3), P. 822 - 845
Published: Feb. 12, 2023
Efficient
and
stable
blue
organic
light-emitting
devices
(OLEDs)
represent
one
of
the
most
important
components
in
future
solid-state
lighting
full
color
displays.
Although
red
green
OLEDs
have
been
successfully
commercialized,
it
remains
challenging
to
realize
showing
high
efficiency
stability
simultaneously,
restricting
their
commercialization.
Triplet–triplet
annihilation
(TTA)-based
materials
emerging
as
a
new
category
electroluminescent
or
host
with
promising
potential
for
highly
efficient
due
appealing
photophysical
properties
(e.g.,
ability
generate
emissive
singlet
excited
states
through
TTA
process,
photoluminescence
quantum
yield,
ease
molecular
design,
etc.).
Recently,
research
on
TTA-based
toward
high-performance
has
received
an
increasing
attention.
In
this
review,
recent
advances
design
strategies,
(both
emitters
materials),
mechanism
electroluminescence,
well
OLED
applications
are
presented
comprehensively.
Moreover,
perspectives
opportunities
field
also
described.
We
believe
that
will
bring
more
developing
large
family
novel
photofunctional
tunable
properties,
thus
providing
high-efficiency
electroluminescence
future.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 10, 2025
High
mobility
emissive
organic
semiconductors
(HMEOSCs)
are
a
kind
of
unique
semiconducting
material
that
simultaneously
integrates
high
charge
carrier
and
strong
emission
features,
which
not
only
crucial
for
overcoming
the
performance
bottlenecks
current
optoelectronic
devices
but
also
important
constructing
high-density
integrated
devices/circuits
potential
smart
display
technologies
electrically
pumped
lasers.
However,
development
HMEOSCs
is
facing
great
challenges
due
to
mutually
exclusive
requirements
molecular
structures
packing
modes
between
solid-state
emission.
Encouragingly,
considerable
advances
on
have
been
made
with
continuous
efforts,
successful
integration
these
two
properties
within
individual
currently
presents
promising
research
direction
in
electronics.
Representative
progress,
including
design
HMEOSCs,
exploration
their
applications
photoelectric
conversion
electroluminescent
devices,
especially
photovoltaic
cells,
light-emitting
diodes,
transistors,
summarized
timely
manner.
The
developing
other
related
lasers,
spin
transistors
discussed.
We
hope
this
perspective
will
boost
rapid
new
mechanism
understanding
wide
different
fields
entering
stage.
Journal of Materials Chemistry C,
Journal Year:
2021,
Volume and Issue:
10(7), P. 2411 - 2430
Published: Nov. 27, 2021
Polycyclic
aromatic
hydrocarbons
(PAHs)
as
a
typical
class
of
organic
semiconductors
demonstrate
unique
optical,
electrical,
magnetic
and
other
interesting
properties
due
to
their
extended
conjugation
diverse
structures.
Journal of Materials Chemistry C,
Journal Year:
2021,
Volume and Issue:
9(47), P. 16843 - 16858
Published: Jan. 1, 2021
In
this
review,
beside
the
formation
mechanism
and
emission
process
of
exciplexes,
we
mainly
discuss
donor–acceptor
contacting
modes
luminescence
properties,
which
are
important
to
develop
high-performance
multifunctional
optoelectronics.
