Synthesis of PMMA star polymers with siloxane cores via group-transfer polymerization using silyl ketene acetal functionalized cyclic siloxanes

1992 ◽  
Vol 25 (26) ◽  
pp. 7330-7333 ◽  
Author(s):  
Z. Zhu ◽  
J. Rider ◽  
C. Y. Yang ◽  
M. E. Gilmartin ◽  
G. E. Wnek
Keyword(s):  
Star Polymers ◽  
Group Transfer ◽  
Ketene Acetal ◽  
Cyclic Siloxanes

B(C6F5)3-catalyzed group transfer polymerization of alkyl methacrylates with dimethylphenylsilane through in situ formation of silyl ketene acetal by B(C6F5)3-catalyzed 1,4-hydrosilylation of methacrylate monomer

2015 ◽  
Vol 6 (18) ◽  
pp. 3502-3511 ◽  
Author(s):  
Yougen Chen ◽  
Kodai Kitano ◽  
Shinji Tsuchida ◽  
Seiya Kikuchi ◽  
Kenji Takada ◽  
...  
Keyword(s):  
Group Transfer ◽  
Ketene Acetal ◽  
Methacrylate Monomer ◽  
In Situ Formation ◽  
Alkyl Methacrylates

The B(C6F5)3-catalyzed GTP of alkyl methacrylates using hydrosilane has been studied in this study.

Main-chain degradable star polymers comprised of pH-responsive hyperbranched cores and thermoresponsive polyethylene glycol-based coronas

2018 ◽  
Vol 9 (39) ◽  
pp. 4824-4839 ◽  
Author(s):  
Ulrike Wais ◽  
Lohitha Rao Chennamaneni ◽  
Praveen Thoniyot ◽  
Haifei Zhang ◽  
Alexander W. Jackson
Keyword(s):  
Polyethylene Glycol ◽  
Ring Opening ◽  
Main Chain ◽  
Star Polymers ◽  
Hyperbranched Polymers ◽  
Ph Responsive ◽  
Radical Ring ◽  
Ketene Acetal

Dual stimuliresponsive main-chain degradable star hyperbranched polymers have been synthesized via cyclic ketene acetal radical ring-opening and RAFT-based methacrylate copolymerization.

A Review of Group-Transfer Polymerization

1992 ◽  
Vol 65 (3) ◽  
pp. 580-600 ◽  
Author(s):  
William J. Brittain
Keyword(s):  
Anionic Polymerization ◽  
Room Temperature ◽  
Living Polymerization ◽  
Small Concentration ◽  
Polymerization Process ◽  
Synthetic Method ◽  
Group Transfer ◽  
Ketene Acetal ◽  
Acrylic Ester ◽  
Complex Polymer

Abstract Group-transfer polymerization is a very useful synthetic method for the preparation of acrylic ester polymers. This living polymerization process works well at room temperature and can be used to prepare a wide variety of complex polymer structures. Mechanistic work suggests that GTP is a form of anionic polymerization where propagation occurs via a small concentration of enolate anions which are in equilibrium with dormant silyl ketene acetal chain ends. GTP will find the most use in specialty applications including dispersants, toners, photoresists, and rheology control agents.

scholarly journals Organic acids as efficient catalysts for group transfer polymerization of N,N-disubstituted acrylamide with silyl ketene acetal: polymerization mechanism and synthesis of diblock copolymers

2015 ◽  
Vol 6 (38) ◽  
pp. 6845-6856 ◽  
Author(s):  
Seiya Kikuchi ◽  
Yougen Chen ◽  
Kodai Kitano ◽  
Kenji Takada ◽  
Toshifumi Satoh ◽  
...  
Keyword(s):  
Organic Acids ◽  
Organic Acid ◽  
Diblock Copolymers ◽  
Polymerization Mechanism ◽  
Group Transfer ◽  
Ketene Acetal

The GTP of N,N-disubstituted acrylamide using organic acid and silyl ketene acetal was intensively investigated.

Porphyrin-functionalized coordination star polymers and their potential applications in photodynamic therapy

2019 ◽  
Vol 10 (45) ◽  
pp. 6116-6121 ◽  
Author(s):  
Tan Ji ◽  
Lei Xia ◽  
Wei Zheng ◽  
Guang-Qiang Yin ◽  
Tao Yue ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Self Assembly ◽  
Star Polymers ◽  
New Family ◽  
Potential Applications

We present a new family of porphyrin-functionalized coordination star polymers prepared through combination of coordination-driven self-assembly and post-assembly polymerization. Their self-assembly behaviour in water and potential for photodynamic therapy were demonstrated.

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