Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 29, 2024
Abstract
Kinetically
trapped
and
thermodynamic
nanospheres
with
opposite
macroscopic
P
/
M
chirality
circularly
polarized
luminescence
(CPL)
can
be
obtained
from
a
single
helical
polymer‐metal
complex
under
the
same
environmental
conditions.
To
prepare
these
nanospheres,
chiral
poly(diphenylacetylene)
(PDPA)
[poly‐(
L
)‐
1
]
large
energy
barrier
between
senses
is
chosen
as
source
of
chirality,
while
Ba
2+
metal
ions
are
selected
crosslinking
agents.
As
result,
poly‐(
/Ba
generate
both
kinetically
(Agg
1,
nanospheres)
2,
aggregates,
which
dispersed
in
solvent.
Due
to
high
helix
inversion
process
for
complete
evolution
aggregate
one
takes
more
than
75
days
at
room
temperature,
accelerated
higher
temperatures.
These
stable
remain
solution
up
8
months
without
further
aggregation.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
A
bottom-up
investigation
strategy
for
eumelanin's
structure–property
relationship
by
a
multidisciplinary
approach,
using
3D
electron
diffraction,
solid-state
NMR,
density
functional
theory
and
electronic
spectroscopy.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 10, 2025
Abstract
Heterostructures
comprise
two
or
more
different
semiconducting
materials
stacked
either
as
co‐assemblies
self‐sorted
based
on
their
dynamics
of
aggregates.
However,
self‐sorting
in
heterostructures
is
rather
significant
improving
the
short
exciton
diffusion
length
and
charge
separation.
Despite
small
organic
molecules
being
known
for
nature,
macrocyclic
are
hitherto
unknown
owing
to
unrestrained
assemblies
from
extended
π‐conjugated
systems.
Herein,
near
infrared
region
(NIR)
active
comprised
porphyrin
appended
D‐π‐D
(
1
)
A‐π‐A
2
have
been
reported
show
self‐assembled
0D
2D
nanostructures
via
J‐aggregates.
Interestingly,
mixture
reveals
at
molecular
level
promoting
nanosphere
sheet
structures
which
further
rolled
over
spheres
through
π
–
stacking
leading
core–shell
type
heterostructure.
Consequently,
electrical
conductivity
10
times
higher
than
individual
due
excited
state
electron
transfer
a
mixture,
confirmed
by
femto
second‐transient
absorption
spectroscopy
electrochemical
impedance
spectroscopy.
These
results
suggest
that
controlling
fosters
refining
electronic
properties
pave
way
designing
novel
NIR‐absorbed
solar
cells
(OSCs).
Chemical Communications,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Hydrogen-bonded
supramolecular
assembly
of
an
acceptor-donor-acceptor
(ADA)-type
ambipolar
π-system
containing
naphthalene-diimide
(π-acceptor)
and
thiophene
(π-donor)
conjugated
chromophores
is
examined
for
promising
pyroelectric
(PY)
photo-PY
properties.
A
maximum
PY
coefficient
∼206
μC
m-2
K-1
(at
Tc)
multifold
enhancement
after
light
irradiation
reported.
High
energy
density,
power
density
scaled
efficiency
indicate
the
efficacy
such
a
nontrivial
system
flexible
sensors.
Langmuir,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 27, 2025
This
manuscript
reports
H-bonding
regulated
morphology
control
in
aqueous
supramolecular
assemblies
of
naphthalene-diimide
(NDI)-derived
sulfated
amphiphiles
and
its
direct
correlation
with
antiviral
activity.
NDI-1
a
hydrazide
group
produces
polymersome
structure
an
efficient
display
the
sulfate
groups
on
outer
surface,
resulting
excellent
activity
by
fusion
mechanism.
NDI-3
lacking
any
or
NDI-2
having
amide
particle-like
worm-like
structures,
respectively,
significantly
low
Confocal
microscopy
images
show
that
is
able
to
fully
deactivate
stop
entry
virus
host
cell,
indicating
great
promise
for
future
medicinal
use,
especially
as
it
exhibits
negligible
toxicity
toward
mammalian
cell.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 28, 2025
Controlling
the
self-assembly
of
dyes
is
essential
for
designing
functional
materials
with
tailored
optical,
electronic,
and
mechanical
properties.
However,
achieving
precise
structures
from
two
distinct
chromophores
remains
a
major
challenge
in
field,
requiring
sophisticated
strategies
to
direct
their
organization
at
molecular
level.
In
present
work,
we
report
novel
approach
engineer
complex
liquid-crystalline
(LC)
columnar
nanostructures
through
coassembly
bis-dendronized
chromophores:
tris(p-phenyleneethynylene)
(TPE)
dicarboxylic
acid
(1)
tris(p-phenylenevinylene)
(TPV)
bis(pyridine)
(2).
TPE
1
forms
an
unconventional
four-stranded
orthogonal
LC
phase
via
hydrogen
bonding
between
carboxylic
groups,
while
TPV
2
adopts
lamellar
soft-crystalline
phase.
Remarkably,
equimolar
mixture
(1·2)
gives
rise
unprecedented
two-component
liquid
crystal.
This
grounded
on
complementary
pyridine
groups
that
leads
formation
1D
strands
composed
alternating
molecules
2.
These
hierarchically
organize
by
π-π
interactions
into
eight-stranded
which
1/2
are
oriented
transition
dipole
moments
parallel
axis.
configuration
promotes
slipped
J-type
coupling
components,
resulting
fluorescent
material.
work
paves
way
design
precision
multicomponent
assemblies,
opening
exciting
avenues
advanced
optoelectronic
photonic
materials.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 24, 2024
Abstract
Tetrakisporphyrin
monomers
with
amino
acid
side
chains
at
each
end
form
intramolecular
antiparallel
hydrogen‐bonds
to
adopt
chirally
twisted
pseudo‐macrocyclic
structures
that
result
in
right‐handed
and
left‐handed
(
P
)‐
M
)‐conformations.
The
tetrakisporphyrin
self‐assembled
supramolecular
helical
pseudo‐polycatenane
polymers
via
head‐to‐head
complementary
dimerization
of
the
bisporphyrin
cleft
units
an
isodesmic
manner.
formation
one‐handed
was
confirmed
by
circular
dichroism
(CD)
spectroscopy.
methyl
iso
‐propyl
groups
stereogenic
center
greatly
enhanced
induced
Soret
bands
polymers.
CDs
were
reduced
upon
introduction
large
‐butyl
tert
groups.
Atomic
force
microscopy
revealed
well‐grown
long
polymer
chain
lengths
range
361
13.6
nm.
established
self‐assembly
)‐conformation
monomer.
