ACS Macro Letters,
Год журнала:
2024,
Номер
unknown, С. 35 - 42
Опубликована: Дек. 19, 2024
Nanobowls
show
promising
potential
in
biomedical
applications,
such
as
bioimaging,
cargo
delivery,
and
disease
theranostics,
due
to
their
unique
concave
structure
interior
cavities.
However,
the
lack
of
biodegradable
nanobowls
with
manipulable
size
(especially
dent
size)
still
exists
an
obstacle
for
in-depth
exploration
application
fields.
Herein,
polypeptide-based
are
successfully
obtained
by
self-assembly
a
graft
polypeptide
[named
TPE-P(GAAzo
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 7, 2025
Abstract
The
development
of
near‐infrared
(NIR)
luminophores
offers
significant
potential
in
the
life
sciences,
yet
constructing
pure
organic
clusteroluminescence
(CL)
from
nonconjugated
polymers
via
through‐space
interaction
(TSI)
remains
a
substantial
challenge.
Herein,
it
is
revealed
that
sulfur
(S)
functions
as
bridge
between
isolated
ester
groups
small
molecule
models,
facilitating
(
n
,
π*)
transitions.
Building
on
this,
RCP1
‐
RCP5
and
P1
P4
are
synthesized
to
produce
NIR‐CL
luminophores.
introduction
S
enhances
chain
clustering
polyesters
modulates
inter‐/intra‐chain
TSI,
while
micro‐folding
within
chains
promotes
adjacent
atoms,
resulting
marked
redshift.
Notably,
displayed
fluorescence
peak
at
800
nm,
extending
883
which
sets
new
record
for
CL.
Additionally,
full‐color
fluorescent
fibers
fabricated
explored
application
clusteroluminescent
dyes.
This
work
deepens
understanding
CL
mechanisms
provides
critical
insights
developing
high‐efficiency
materials.
ACS Macro Letters,
Год журнала:
2024,
Номер
13(11), С. 1396 - 1402
Опубликована: Окт. 8, 2024
The
controlled
synthesis
of
star-shaped
bottlebrush
polymers
with
tunable
topologies
is
a
challenge.
However,
such
materials
may
exhibit
distinct
photoluminescence
properties.
Bottlebrush
have
polymerization-induced
emission
(PIE)
properties
due
to
their
aggregated
side
chains,
and
aggregation-induced
(AIE)
also
unique
luminescent
property.
In
this
work,
we
prepared
variety
highly
active
alkyne
Pd
catalysts
polymerized
poly(L/D-lactic
acid)
macromonomers
containing
polymerizable
phenylisocyanide
groups
as
end
obtain
topologically
structured
controllable
molecular
weights
narrow
weight
distributions.
tetraphenyl
ethylene
(TPE)
units
the
core
circularly
polarized
luminescence
We
propose
that
are
AIE
characteristics
TPE
unit
combined
PIE
polymer.
Abstract
Materials
with
circularly
polarized
luminescence
(CPL)
exhibit
great
application
potential
in
biological
scenes
such
as
cell
imaging,
optical
probes,
etc.
However,
most
developed
materials
are
non‐aqueous
and
toxic,
which
seriously
restricts
their
compatibility
the
life
systems.
Thus,
it
is
necessary
to
explore
a
water‐based
CPL
system
high
biocompatibility
so
that
promote
biologic
process.
Herein,
facile
efficient
route
achieve
properties
of
functional
aqueous
solution
demonstrated
by
combination
0D
quantum
dots
(QDs)
2D
chiral
nanosheets.
Benefited
specific
absorption
ability
nanosheets
for
left/right‐handed
CPL,
QDs
adsorbed
onto
surface
through
hydrogen
bond
interactions
showed
apparent
features.
In
addition,
this
has
good
extensibility
property
can
be
effectively
regulated
changing
kind
emissive
QDs.
More
importantly,
nano‐composite
fabrication
process
(one‐step
mixing)
suitable
real
applications,
undoubtedly
beneficial
further
progress
materials.
Abstract
Inherent
luminescent
short
peptides
essentially
provide
opportunities
to
rationally
manipulate
supramolecular
chirality
and
chiral
luminescence.
Herein,
a
facile
protocol
construct
series
of
naphthalimide‐appended
dipeptides
is
reported
that
show
ultrasound
wave‐activated
regulated
by
odd‐even
law.
Naphthalimide
luminophores
are
conjugated
the
dipeptide
skeleton
with
variable
alkyl
spacers.
The
presence
tyrosine
interferes
kinetic
aggregation
into
achiral
nanoparticles
without
transfer
scale.
However,
treatment
initiates
nanoparticle‐to‐helix
transition
accompanied
appeared
optics,
including
Cotton
effect
circularly
polarized
luminescence
(CPL).
parameters,
handedness
helices
chiroptical
behaviors,
follow
law
spacers
in
bearing
non‐substituted
naphthalimides.
amine‐substitution
boosted
quantum
yields
whereas
no
effect.
two
types
constituted
ideal
energy
pairs
enable
efficient
as
well
transportation
containing
substituted
This
work
sheds
light
on
construction
applications
precise
control
over
Chemistry - A European Journal,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 23, 2024
Abstract
The
construction
of
helical
nanotubes
based
on
chiral
coordination
polymers
(CPs)
is
an
intriguing
but
challenging
task,
which
important
for
the
development
functional
materials
that
combine
macroscopic
chirality
with
tube‐related
properties.
Here,
we
selected
a
europium
phosphonate
system,
e.
g.,
Eu(NO
3
)
/
R‐,S
‐pempH
2
,
and
carried
out
systematic
work.
By
controlling
hydrothermal
reaction
conditions
such
as
pH
value
mixture,
molar
ratio
concentration
reactants,
obtained
block‐like
crystals
R/S
‐1
b
rod‐like
‐3
r
hollow
superhelices
‐2
hh
solid
‐4
sh
.
In
latter
two
cases,
has
been
successfully
transferred
amplificated
from
molecular
level
to
level.
Interestingly,
compounds
have
same
chemical
composition
Eu(
‐pempH)
⋅2H
O
show
identical
PXRD
patterns,
thus
can
be
considered
material
except
different
morphologies.
We
further
investigated
their
circularly
polarized
luminescence
(CPL)
properties
found
superhelix
had
larger
dissymmetry
factor
than
This
study
not
only
provides
first
example
CPs,
also
offers
possibility
modulating
chiroptical
CPs
through
morphological
control.
A
new
methodological
design
is
proposed
for
carbon
dots
(CDs)-based
crystallization-induced
phosphorescence
(CIP)
materials
via
one-step
self-assembled
packaging
controlled
by
NH
Angewandte Chemie,
Год журнала:
2024,
Номер
136(42)
Опубликована: Июль 17, 2024
Abstract
Herein
we
report
on
circularly
polarized
luminescence
(CPL)
emission
originating
from
supramolecular
chirality
of
organic
microcrystals
with
a
|
g
lum
value
up
to
0.11.
The
were
prepared
highly
emissive
difluoroboron
β‐diketonate
(BF
2
dbk)
dyes
R
‐
1
or
S
chiral
binaphthol
(BINOL)
skeletons.
and
exhibit
undetectable
CPL
signals
in
solution
but
manifest
intense
their
microcrystals.
superstructures
induced
by
BINOL
skeletons
confirmed
single‐crystal
XRD
analysis.
Spectral
analysis
theoretical
calculations
indicate
that
intermolecular
electronic
coupling,
mediated
the
asymmetric
stacking
superstructures,
effectively
alters
excited‐state
structures
facilitates
electron
transitions
perpendicular
BF
bdk
planes.
coupling
increases
cos
θ
μ
,
m
0.05
(monomer)
0.86
(tetramer)
triggers
optical
activity
bdk.
results
demonstrate
chromophores
within
assemblies
can
be
regulated
both
orientation
extent
couplings.
