The styrene pyridinium provided by the invention has good liner optical property, good water solubility and good consistency with PVA water solution;
本发明提供的苯乙烯吡啶盐具有良好的线性光学性能，水溶性好，与PVA水溶液有很好的相容性；
The styrene pyridinium provided by the invention has good liner optical property, good water solubility and good consistency with PVA water solution;
本发明提供的苯乙烯吡啶盐具有良好的线性光学性能，水溶性好，与PVA水溶液有很好的相容性；
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