Functionalized Azo Dyes by Direct Ullmann Coupling
A variety of thermally stable 4-(N,N-diarylamino)-4'-nitroazobenzene dyes can be produced by direct copper-mediated C-N bond formation on preformed amino substituted azo dyes, thus avoiding a troublesome azo coupling step; the products are useful chromophores for high temperature nonlinear optical applications.
Synthesis and 2nd order nonlinear optical properties of soluble polyimides bearing nitroazobenzene type chromophore pendants attached in side-on mode
An organic soluble polyimide was prepared from 3,3′-dihydroxybenzidine and 2,2-bis(phthalic anhydride)hexafluoropropane. The two hydroxy groups in the repeating unit of the polyimide thus prepared were utilized in attaching 4-nitro-4′-diphenylaminoazobenz
Jeon, Bong-Jin,Soon, Wook Cha,Jeong, Mi-Yun,Tong, Kun Lim,Jin, Jung-Il
p. 546 - 552
(2007/10/03)
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