Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
63(12)
Published: Dec. 29, 2023
Abstract
Polymerization‐induced
self‐assembly
(PISA)
combines
polymerization
and
in
situ
of
block
copolymers
one
system
has
become
a
widely
used
method
to
prepare
copolymer
nanoparticles
at
high
concentrations.
The
persistence
polymers
the
environment
poses
huge
threat
ecosystem
represents
significant
waste
resources.
There
is
an
urgent
need
develop
novel
chemical
approaches
synthesize
degradable
polymers.
To
meet
with
this
demand,
it
crucial
install
degradability
into
PISA
nanoparticles.
Most
recently,
have
been
synthesized
by
introducing
degradation
mechanisms
either
shell‐forming
or
core‐forming
blocks.
This
Minireview
summarizes
development
PISA,
including
shell‐degradable,
core‐degradable,
all‐degradable
Future
will
benefit
from
expansion
techniques
new
adaptation
high‐throughput
for
both
syntheses
studies.
Chinese Journal of Chemistry,
Journal Year:
2022,
Volume and Issue:
41(1), P. 111 - 128
Published: Sept. 13, 2022
Comprehensive
Summary
Recently,
piezocatalysis
has
attracted
considerable
attention
as
a
new
type
of
renewable
mechanical
energy
conversion
technology,
which
relies
on
the
strain
induced
polarization
piezoelectric
material.
This
technology
been
extensively
applied
in
applications
water
splitting,
remediation,
gas
purification
and
tumor
therapy.
Despite
rapid
development
piezocatalysis,
utilization
materials
for
synthetic
purpose
is
still
under
exploration.
Piezoelectric
means
to
promote
organic
reactions
expand
scope
piezoelectrically
mediated
show
successes
both
polymer
synthesis.
Herein,
we
provide
comprehensive
review
recent
progress
reactions,
catalytic
mechanisms
last
few
years.
The
limitations
future
directions
this
area
are
also
discussed.
We
believe
will
insights
into
underlying
mechanism
electron
transfer
process
guide
design
chemistry.
Macromolecules,
Journal Year:
2022,
Volume and Issue:
55(10), P. 4056 - 4063
Published: May 4, 2022
A
well-controlled
piezoelectrically
mediated
reversible
addition–fragmentation
chain-transfer
polymerization
(piezo-RAFT)
was
carried
out
under
ultrasonic
agitation
with
piezoelectric
ZnO
nanoparticles
as
the
mechanochemical
transducer.
The
resulting
polymer
had
high
end-group
fidelity,
low
dispersity,
and
capacity
for
chain
extension.
This
involves
generation
of
alkyl
radical
through
an
electron
transfer
process
from
nanoparticle
to
bromide,
which
also
verified
by
1H
NMR,
liquid
chromatography–mass
spectrometry
(LC-MS),
spin
resonance
(ESR),
density
functional
theory
(DFT)
calculation.
chemistry
further
adopted
in
curing
composite
resins
circumvent
light
penetration
limit
ultraviolet
(UV)
curing.
work
opens
a
new
avenue
shows
good
potential
applications.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: June 24, 2022
Abstract
Photo-controlled
living
polymerization
has
received
great
attention
in
recent
years.
However,
despite
the
success
therein,
report
on
photo-controlled
cationic
been
greatly
limited.
We
demonstrate
here
a
novel
decolorable,
metal-free
and
visible
light-controlled
system
by
using
tris(2,4-dimethoxyphenyl)methylium
tetrafluoroborate
as
photocatalyst
phosphate
chain
transfer
agent
(CTA)
for
of
4-methoxystyrene.
This
reaction
under
green
LED
light
irradiation
shows
clear
characteristics
including
predictable
molar
mass,
low
molar-mass
dispersity
(
Đ
=
1.25),
sequential
capability.
In
addition,
photocatalytic
exits
excellent
“on-off”
photo
switchability
longest
“off
period”
36
h
up
to
now
polymerization.
Furthermore,
residual
photo-catalyst
is
easily
deactivated
decolored
with
addition
base
after
The
present
study
extended
systems
new
organic
photocatalysts,
CTA
polymerizable
monomer
well
properties
photostability
in-situ
capacity.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(37)
Published: July 29, 2023
Traditional
mechanochemically
controlled
reversible-deactivation
radical
polymerization
(RDRP)
utilizes
ultrasound
or
ball
milling
to
regenerate
activators,
which
induce
side
reactions
because
of
the
high-energy
and
high-frequency
stimuli.
Here,
we
propose
a
facile
approach
for
tribochemically
atom
transfer
(tribo-ATRP)
that
relies
on
contact-electro-catalysis
(CEC)
between
titanium
oxide
(TiO2
)
particles
CuBr2
/tris(2-pyridylmethylamine
(TPMA),
without
any
input.
Under
friction
induced
by
stirring,
TiO2
are
electrified,
continuously
reducing
/TPMA
into
CuBr/TPMA,
thereby
conversing
alkyl
halides
active
radicals
start
ATRP.
In
addition,
effect
reaction
was
elucidated
theoretical
simulation.
The
results
indicated
increasing
frequency
could
reduce
energy
barrier
electron
from
/TPMA.
this
study,
design
tribo-ATRP
successfully
achieved,
enabling
CEC
(ca.
10
Hz)
access
variety
polymers
with
predetermined
molecular
weights,
low
dispersity,
high
chain-end
fidelity.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
63(12)
Published: Dec. 29, 2023
Abstract
Polymerization‐induced
self‐assembly
(PISA)
combines
polymerization
and
in
situ
of
block
copolymers
one
system
has
become
a
widely
used
method
to
prepare
copolymer
nanoparticles
at
high
concentrations.
The
persistence
polymers
the
environment
poses
huge
threat
ecosystem
represents
significant
waste
resources.
There
is
an
urgent
need
develop
novel
chemical
approaches
synthesize
degradable
polymers.
To
meet
with
this
demand,
it
crucial
install
degradability
into
PISA
nanoparticles.
Most
recently,
have
been
synthesized
by
introducing
degradation
mechanisms
either
shell‐forming
or
core‐forming
blocks.
This
Minireview
summarizes
development
PISA,
including
shell‐degradable,
core‐degradable,
all‐degradable
Future
will
benefit
from
expansion
techniques
new
adaptation
high‐throughput
for
both
syntheses
studies.
