European Journal of Organic Chemistry,
Год журнала:
2024,
Номер
27(43)
Опубликована: Авг. 20, 2024
Abstract
Host‐guest
conjugate
is
a
promising
strategy
for
providing
outstanding
molecules.
Herein,
we
designed
host‐guest
HG1
,
which
comprises
hydrophilic
host
unit,
tetraaza[2.2.1.2.2.1]paracyclophane
CPX
2
with
microhydrophobic
cavity,
and
guest
2,3‐naphthalimide
fused
two
benzothiophenes
G1
exhibiting
fluorosolvatochromism,
linked
an
oxyethylene
chain.
initially
showed
fluorescence
band
at
585
nm
in
MeOH/H
O
(1/499
v/v);
however,
this
decreased
time,
instead,
new
430
appeared.
The
CIE
chromaticity
diagram
that
the
fluorescent
color
changed
from
yellow‐orange
to
blue
via
white.
NMR
analysis
of
methanol‐d
4
exhibited
different
signals
unit
between
yellow
structures.
structures
asymmetrical
assigned
as
affected
by
cavity
environment
unit.
Consequently,
can
form
conformations:
In‐form
Out‐form.
In
In‐form,
inside
hydrophobic
shows
fluorescence.
Out‐form,
outside
aqueous
solvent.
Therefore,
performs
ratiometric
fluorophore
depending
on
in/out
isomerism
conjugate.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 12, 2025
Abstract
Blue
phase
liquid
crystal
(BPLC)
dynamic
patterns
have
attracted
wide
attention
for
promising
applications
in
optical
information
manipulation
and
visualization
sensing,
owing
to
unique
3D
chiral
helix
superstructure
adjustable
bright/abundant
colors
response
extra
fields.
Inkjet
printing
has
become
an
efficient
approach
achieving
programmable
BPLC
patterns.
However,
it
remains
a
challenge
achieve
independent
“on/off”
control
of
regional
using
the
same
ink
due
unrevealed
temperature‐time‐dependent
color
change
behavior
determined
by
different
inks.
Herein,
comprehensive
understanding
reflective
bandgap
shift
law
versus
temperature/time
is
established
investigating
diffusion
kinetics
multiple
inks
(5CB,
6CB,
8CB)
hydrophobically
modified
blue‐phase
polymer
templates.
The
three
induce
redshift
followed
blueshift
color/reflectance
wavelengths,
but
triggering
times
differ
significantly
at
temperature,
which
attributed
inks'
transition
characteristics,
fluid
properties,
interaction
with
network.
Dynamic
multi‐color
selective
region
are
successfully
fabricated
based
on
time‐temperature
controlled
multi‐ink
technique
displaying
time‐series
multi‐level
encryption
(including
“growing
apple
tree”
“nested
QR
codes”).
This
study
provides
important
insights
into
design
fabrication
advanced
devices
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 28, 2024
Constructing
circularly
polarized
luminescence
(CPL)
materials
that
exhibit
dynamic
handedness
inversion
and
emissive
color
modulation
for
multimodal
information
encryption
presents
both
a
significant
challenge
compelling
opportunity.
Here,
we
have
developed
pyridinethiazole
acrylonitrile-cholesterol
derivative
(Z-PTC)
exhibits
wavelength-dependent
photoisomerization
photocyclization,
enabling
in
supramolecular
assemblies
with
decent
CPL
activity.
Coordination
Ag
Chemical Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Network
measures
have
proven
very
successful
in
identifying
structural
patterns
complex
systems
(e.g.,
a
living
cell,
neural
network,
the
Internet).
How
such
can
be
applied
to
understand
rational
and
experimental
design
of
chemical
reaction
networks
(CRNs)
is
unknown.
Here,
we
develop
procedure
model
CRNs
as
mathematical
graph
on
which
network
random
analysis
applied.
We
used
an
enzymatic
CRN
(for
mass-action
was
previously
developed)
show
that
provides
insights
into
its
structure
properties.
Temporal
analyses,
particular,
revealed
when
feedback
interactions
emerge
indicating
comprise
various
reactions
are
being
added
removed
over
time.
envision
procedure,
including
temporal
method,
could
broadly
chemistry
characterize
properties
many
other
CRNs,
promising
data-driven
future
molecular
ever
greater
complexity.
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 14, 2025
Abstract
Supramolecular
dynamic
room
temperature
phosphorescence
(RTP)
is
the
focus
of
current
research
because
its
wide
application
in
biological
imaging
and
information
anti‐counterfeiting.
Herein,
a
time‐dependent
supramolecular
lanthanide
phosphorescent
4D
assembly
material
with
multicolor
luminescence
including
white,
which
composed
4‐(4‐bromophenyl)‐pyridine
salt
derivative
(G),
inorganic
clay
(LP)/Eu
complex
pyridine
dicarboxylic
acid
(DPA)
reported.
Compared
self‐assembled
nanoparticle
G,
lamellar
G/LP
showed
double
emission
fluorescence
at
380
nm
516
over
time.
Within
60
min,
lifetime
quantum
yield
increases
from
none
to
7.4
ms
27.53%
respectively,
achieving
emission,
due
limitation
progressive
stacking
LP
electrostatically
driven
“domino
effect.”
Furthermore,
DPA
G/LP/Eu
leads
time‐resolved
colorless
purple
successfully
applied
multi‐level
logic
anti‐counterfeiting
efficiently
antibiotic
selective
sensor.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 16, 2024
Abstract
Stimuli‐responsive
circularly
polarized
luminescence
(CPL)
materials
based
on
cholesteric
liquid
crystal
(CLC)
platforms
show
great
promise
for
applications
in
information
encryption
and
anticounterfeiting.
In
this
study,
we
constructed
a
mercury
ion‐responsive
CPL
system
CLCs
by
controlling
the
conjugation
degree
of
axially
chiral
binaphthyl
derivatives.
Two
derivatives
(
R
/
S
‐1
‐2)
were
initially
used
as
dopants
to
demonstrate
that
inversion
g
lum
values
from
0.5/‐0.44
−0.53/0.48)
could
be
achieved
modulating
binaphthyls.
Based
concept,
thioacetal
‐2S
was
developed
mercury‐responsive
dopant
CLCs.
Under
Hg
ion
treatment,
sign
inverted
value
changed
0.22
−0.29)
due
transformation
into
an
aldehyde
group.
Additionally,
material
applied
encryption.
Chemical Communications,
Год журнала:
2024,
Номер
60(68), С. 9054 - 9057
Опубликована: Янв. 1, 2024
The
supramolecular
chirality
of
a
co-assembly
pyridine-cholesterol
gelator
and
solvent
monomer
is
captured
via
in
situ
photopolymerization.
Doping
with
achiral
dyes
enables
the
creation
multi-color
CPL
polymer
films
inverted
handedness.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 5, 2025
Abstract
Circularly
polarized
luminescence
(CPL)
material
has
been
widely
exploited
in
3D
display,
information
encryption,
etc.
However,
situ
generation
and
dynamic
modulation
of
CPL
signals
to
achieve
programmable
patterns
remains
challenging
due
elusory
interactions
between
fluorescence
the
chiral
microstructures.
A
novel
strategy
is
proposed
combining
controllable
magnetic
field‐assisted
assembly
photo‐patterning
technique
form
twisted
stacking
heterostructure,
consisting
orientated
Ag@Fe
3
O
4
nanowires
(NWs)
polydimethylsiloxane
(PDMS)
film
embedded
with
achiral
dyes
polydiacetylene
(PDA)
chains.
In
a
designed
system,
PDA
chains
after
photo‐polymerization
can
serve
as
polarizer
produce
linear
fluorescence,
while
aligned
NWs
on
surface
PDMS
films
act
phase
retarder,
favoring
generation.
Furthermore,
characteristics,
including
wavelength
handedness,
be
switched
by
thermo‐chromatic
transition
PDA,
thus,
micropatterns
tailorable
distributions
achieved.
By
employing
above
two
orthogonal
channels,
system
possesses
brilliant
storage
capabilities,
multistage
encryption.
This
study
proposes
for
fabrication
toward
multiple
