150830-92-5Relevant academic research and scientific papers
Synthesis of and ferromagnetic coupling in poly(phenylenevinylene)s bearing built-in t-butyl nitroxides
Nishide, Hiroyuki,Kaneko, Takashi,Toriu, Shuichi,Kuzumaki, Yoshihiro,Tsuchida, Eishun
, p. 499 - 508 (1996)
Poly[[2- or 4-[N-t-butyl-N-(triethylsiloxy- or t-butyldimethylsiloxy)amino]-1,4- or 1,2-phenylene]vinylene] was synthesized by polymerizing 4- or 2-bromo-2- or 4-[N-t-butyl-N-(triethylsiloxy- or t-butyldimethylsiloxy)amino]styrene with a palladium catalyst, respectively. They were deprotected and chemically oxidized to yield poly(1,4- or 1,2-phenylenevinylene)s bearing a 2- or 4-substituted built-in nitroxide radical. The polyradicals were chemically stable, and their spin concentration was increased to 0.8 spin/unit. A SQUID measurement which included the corresponding diradicals and triradicals indicated that a partial, but strong, intramolecular ferromagnetic coupling was established through the conjugated backbone, despite a spin defect in the side radical moiety, for the poly(1,2- phenylenevinylene) bearing 4-substituted built-in nitroxide radical.
Poly(phenylenevinylene) Bearing Built-in tert-Butylnitroxide. A Polyradical Ferromagnetically Coupled in the Intrachain
Kaneko, Takashi,Toriu, Shuichi,Kuzumaki, Yoshihiro,Nishide, Hiroyuki,Tsuchida, Eishun
, p. 2135 - 2138 (2007/10/02)
Poly(1,4- or 1,2-phenylenevinylene)s bearing a 2- or 4-substituted nitroxide radical were synthesized by polymerizing >styrenes with a palladium catalyst.The polyradicals were chemically stable, and their ESR an
