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

1.全氟烷基磺酰基取代偶氮染料synthesized.2.Perfluoroalkylsulfonyl-substituted显示出比相应的硝基衍生物(DR1)更强的二阶非线性系数和更好的驰豫行为，这可以归因于全氟烷基磺酰基的更强的吸电子能力和更长的刚性。3.与相应的硝基衍生物(DR1)相比，全氟烷基磺酰基取代偶氮染料的MMA共聚物具有更强的二阶非线性系数(33&gt；)和更好的松弛行为。偶联组分中N-烷基链长越短，玻璃化转变温度(Tg)越高。聚氟烷基磺酰基的链长不影响聚合物的玻璃化转变温度。

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.