Synthesis of Perfluoroalkylsulfonyl-Containing Azo Dyes and Their Second-Order Nonlinearity

1.已经合成了全氟烷基磺酰取代苯。与相应的硝基衍生物（dr1）相比，全氟烷基磺酰取代偶氮染料在掺PMMA中表现出更高的二阶非线性系数（d_<33>）和更好的弛豫行为。这可归因于全氟烷基磺酰基较强的吸电子性、长和刚性。与相应的硝基衍生物（dr1）相比，与全氟烷基磺酰取代偶氮染料连接的MMA共聚物具有增强的二阶非线性系数（d_<33>）和更好的弛豫行为。偶联组分中n -烷基链长越短，玻璃化瞬态温度（Tg）越高。全氟烷基磺酰基的链长对聚合物的Tg没有影响。

1.Perfluoroalkylsulfonyl-substituted benzenes have been synthesized.2.Perfluoroalkylsulfonyl-substituted azo dyes showed enhanced second-order nonlinear coefficients (d_<33>) and better relaxation behavior than the corresponding nitro derivative (DR 1) in doped PMMA.These can be attributed to stronger electron-withdrawing, long and rigid nature of the perfluoroalkylsulfonyl groups.3.MMA co-polymers attached with perfluoroalkylsulfonyl-substituted azo dyes showed enhanced second-order nonlinear coefficients (d_<33>) and better relaxation behavior than the corresponding nitro derivative (DR 1). The shorter the N-alkyl chain length in coupling component, the high the glass transient temperature (Tg). Chain length of pefluoroalkylsulfonyl group did not affect Tg of the polymers.