Oxygen, Light, and Mechanical Force Mediated Radical Polymerization Toward Precision Polymer Synthesis
Chemical Communications,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
This
article
highlights
the
advancements
in
controlled
radical
polymerization
facilitated
by
three
external
regulations
of
oxygen,
light,
and
mechanical
force,
outlines
future
directions
polymerization.
Language: Английский
Oxygen-Driven Atom Transfer Radical Polymerization
Yuxuan Du,
No information about this author
Zhe Chen,
No information about this author
Zhikang Xie
No information about this author
et al.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 16, 2025
In
traditional
atom
transfer
radical
polymerization
(ATRP),
oxygen
must
be
meticulously
eliminated
due
to
its
propensity
quench
species
and
halt
the
process.
Additionally,
oxidizes
lower-valent
Cu
catalyst,
compromising
ability
activate
alkyl
halides
propagate
polymerization.
this
study,
we
present
an
oxygen-driven
ATRP
utilizing
alkylborane
compounds,
a
method
that
not
only
circumvents
need
for
stringent
removal
but
also
exploits
as
essential
cofactor
promote
This
approach
exhibits
broad
compatibility
in
organic
or
aqueous
media,
yielding
well-defined
polymers
with
low
dispersity
(Đ
1.11)
molecular
weights
closely
aligned
theoretical
values.
Triethylborane
(Et3B)
air-stable
triethylborane-amine
complex
(Et3B-DMAP)
facilitate
controlled
under
open-to-air
conditions,
demonstrating
efficiency
across
wide
range
of
monomers.
Moreover,
technique
enables
successful
synthesis
protein–polymer
conjugates
supports
surface
modifications
nanoparticles
silicon
wafers
aerobic
conditions.
represents
robust
versatile
platform
precision
far-reaching
implications
materials
science,
biomedicine,
advanced
engineering.
Language: Английский
Entropy spontaneous ratiometric electrochemical aptasensor based on polymerization and AuNPs signal amplification for Acetamiprid residue analysis
Wei‐Ming Li,
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Yuzhen Jia,
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Kunyilan Chen
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et al.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 26, 2025
Abstract
Acetamiprid
(ACE),
a
next-generation
chlorinated
neonicotinoid
insecticide,
has
been
extensively
employed
for
pest
control.
However,
its
excessive
residues
in
food
and
the
environment
have
raised
significant
concerns
regarding
human
health.
To
address
need
simple,
accurate,
efficient
ACE
detection
method,
this
study
developed
ratiometric
electrochemical
aptasensor
utilizing
dual
signal
amplification
strategy
involving
atom
transfer
radical
polymerization
(ATRP)
gold
nanoparticles
(AuNPs).
Methylene
blue
(MB)
served
as
internal
reference
signal,
which
was
attached
to
aptamer-DNA
1
(dsDNA)
through
electrostatic
adsorption
intercalation.
Ferrocenyl
methyl
methacrylate
(FMMA)
polymerized
into
long
chains
via
ATRP,
generating
significantly
amplified
electrical
compared
that
of
monomeric
FMMA.
AuNPs,
known
their
bioconjugability,
were
linked
DNA
2
(AuNPs-DNA
2),
enhancing
loading
capacity
expanding
ATRP
reaction
sites.
In
presence
ACE,
MB
decreased
while
FMMA
polymer
increased,
achieving
with
limit
(LOD)
19.26
pg/mL.
This
not
only
enhances
selectivity
but
also
mitigates
influence
background
currents,
offering
novel
effective
approach
real-world
sample
analysis.
Language: Английский
Visible-light-driven rhodamine 6G mediated in situ poly-ferrocene strategy for highly sensitive quantification of esophageal cancer biomarkers
Shuaibing Yu,
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Qinyuan Xu,
No information about this author
Fenghong Zhang
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et al.
Talanta,
Journal Year:
2025,
Volume and Issue:
295, P. 128291 - 128291
Published: May 8, 2025
Language: Английский
Riboflavin‐Catalyzed Photoinduced Atom Transfer Radical Polymerization
Halil Ibrahim Coskun,
No information about this author
Thomas Votruba‐Drzal,
No information about this author
Hanshu Wu
No information about this author
et al.
Macromolecular Chemistry and Physics,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 20, 2024
Abstract
The
photoATRP
of
methyl
acrylate
(MA)
is
investigated
using
riboflavin
(RF)
and
CuBr
2
/Me
6
TREN
as
a
dual
catalyst
system
under
green
LED
irradiation
(λ
≈
525
nm).
Both
RF
enhanced
oxygen
tolerance,
enabling
effective
ATRP
in
the
presence
residual
oxygen.
High
molar
mass
polymers
(up
to
M
n
129
000
g·mol
−1
)
with
low
dispersity
(
Đ
≤
1.16)
are
prepared,
chain‐end
fidelity
confirmed
through
successful
chain
extension.
molecular
masses
obtained
polymer
increased
linearly
conversion
showed
high
initiation
efficiency.
Mechanistic
studies
by
laser
flash
photolysis
reveal
that
predominant
activator
generation
mechanism
reductive
quenching
Me
(83%,
[CuBr
]/[Me
TREN]
=
1/3
condition),
supported
polymerization
kinetics
thermodynamic
calculations.
Language: Английский