Free radical induced nuclear magnetic resonance shifts: comments on contact shift mechanisms

1981 ◽  
Vol 103 (5) ◽  
pp. 1041-1047 ◽  
Author(s):  
Dan Draney ◽  
Charles A. Kingsbury
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Free Radical ◽  
Magnetic Resonance ◽  
Contact Shift ◽  
Nuclear Magnetic

Electron delocalization in mixed-valence biferrocenium salts: nuclear magnetic resonance contact shift studies

1990 ◽  
Vol 29 (1) ◽  
pp. 80-84 ◽  
Author(s):  
Teng Yuan Dong ◽  
Ming Yhu Hwang ◽  
Tsui Ling Hsu ◽  
Chi Chang Schei ◽  
Show Kei Yeh
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Mixed Valence ◽  
Electron Delocalization ◽  
Contact Shift ◽  
Nuclear Magnetic

The Synthesis of Polystyrene-B-Poly(4-Vinylpyridine) by Nitroxide-Medium Controllable Free Radical Polymerization

2012 ◽  
Vol 531 ◽  
pp. 366-369
Author(s):  
Si Kai Zhou ◽  
Ya Juan Xu ◽  
Shao Ming Fang ◽  
Zhi Jun Chen
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Free Radical ◽  
Magnetic Resonance ◽  
Radical Polymerization ◽  
Diblock Copolymers ◽  
Free Radical Polymerization ◽  
Gel Permeation Chromatography ◽  
1H Nuclear Magnetic Resonance ◽  
Gel Permeation ◽  
Nuclear Magnetic

In this paper, a system polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) were synthesized by nitroxide-medium controllable free radical polymerization. PS-b-P4VP were characterized by 1H-nuclear magnetic resonance (1H-NMR), infrared spectrum (FTIR) and gel permeation chromatography (GPC). The results have indicated that diblock copolymers can be prepared and with molecular polydispersities in the range of 1.08 to 1.31. The structure of diblock was showed by 1H-nuclear magnetic resonance.

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