Visible Light Photoinitiated Metal-Free Living Cationic Polymerization of 4-Methoxystyrene

2015 ◽  
Vol 137 (24) ◽  
pp. 7580-7583 ◽  
Author(s):  
Andrew J. Perkowski ◽  
Wei You ◽  
David A. Nicewicz
Keyword(s):  
Visible Light ◽  
Cationic Polymerization ◽  
Free Living ◽  
Metal Free ◽  
Living Cationic Polymerization

scholarly journals Metal-Free Living Cationic Polymerization via Carbon-Sulfur Bonds (2)

2015 ◽  
Vol 88 (12) ◽  
pp. 461-465
Author(s):  
Mineto UCHIYAMA ◽  
Kotaro SATOH ◽  
Masami KAMIGAITO
Keyword(s):  
Cationic Polymerization ◽  
Free Living ◽  
Metal Free ◽  
Living Cationic Polymerization

Metal-Free Living Cationic Polymerization Using Diaryliodonium Salts as Organic Lewis Acid Catalysts

2020 ◽  
Vol 53 (11) ◽  
pp. 4185-4192
Author(s):  
Rui Haraguchi ◽  
Tsuyoshi Nishikawa ◽  
Arihiro Kanazawa ◽  
Sadahito Aoshima
Keyword(s):  
Lewis Acid ◽  
Cationic Polymerization ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts ◽  
Free Living ◽  
Metal Free ◽  
Living Cationic Polymerization ◽  
Diaryliodonium Salts

scholarly journals Metal-Free Living Cationic Polymerization via Carbon-Sulfur Bonds (1)

2015 ◽  
Vol 88 (10) ◽  
pp. 391-396 ◽  
Author(s):  
Mineto UCHIYAMA ◽  
Kotaro SATOH ◽  
Masami KAMIGAITO
Keyword(s):  
Cationic Polymerization ◽  
Free Living ◽  
Metal Free ◽  
Living Cationic Polymerization

Effects of monomer and ether structure on metal-free living cationic polymerization of various vinyl ethers using hydrogen chloride with ether

2009 ◽  
Vol 64 (3) ◽  
pp. 209-220 ◽  
Author(s):  
Shinji Sugihara ◽  
Masaru Kitagawa ◽  
Yuichi Inagawa ◽  
Izabela Magdalena Zaleska ◽  
Isao Ikeda
Keyword(s):  
Hydrogen Chloride ◽  
Cationic Polymerization ◽  
Vinyl Ethers ◽  
Free Living ◽  
Metal Free ◽  
Living Cationic Polymerization

scholarly journals Visible Light-Controlled Living Cationic Polymerization of Methoxystyrene

2021 ◽  
Author(s):  
Lei Wang ◽  
Shaodong Zhang ◽  
Yongfeng Zhou ◽  
Yupo Xu ◽  
Quan Zuo ◽  
...  
Keyword(s):  
Visible Light ◽  
Cationic Polymerization ◽  
Molar Mass ◽  
Chain Transfer ◽  
Polymerization Reaction ◽  
Great Success ◽  
Living Cationic Polymerization ◽  
Green Led ◽  
Polymerization System ◽  
Lytic System

Photo-controlled living polymerization has received great attention in recent years. However, despite the great success therein, the report on photo-controlled living cationic polymerization has been greatly limited. We demonstrate here a novel decolorable, metal-free and visible light-controlled living cationic polymerization system by using tris(2,4-dimethoxyphenyl)methylium tetrafluoroborate as the photocatalyst and phosphate as the chain transfer agent (CTA) for polymerization of 4-methoxystyrene. This polymerization reaction under green LED light irradiation shows clear living characteristics including predictable molar mass, narrow molar-mass dispersity (Đ = 1.25), and sequential polymerization capability. In addition, the photocata-lytic system exits excellent “on-off” photo switchability and shows the longest “off period” of 36 h up to now for photo-controlled cationic polymerization. Furthermore, the residual photo-catalyst is easily deactivated and decolored with addition of a base after the polymerization.

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