School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, PR China.
J Photochem Photobiol B. 2013 Aug 5;125:8-12. doi: 10.1016/j.jphotobiol.2013.04.006. Epub 2013 Apr 25.
Two novel symmetrical stilbene optical brighteners based on 1,3,4-oxadiazole bearing sodium sulfonate unit were synthesized. The two target compounds were characterized by NMR and elemental analysis. The photophysical processes of the target compounds were investigated by UV-Vis absorption and fluorescence emission spectra in different solutions. The two optical brighteners were tested as radiation protectants for the Spodoptera litura nuclear polyhedrosis virus (SINPV) against 2nd-instar S. litura larvae. The results indicate that the two compounds exhibit strong blue fluorescence emission, and the fluorescence quantum yield in DMF is 0.86 and 0.75, respectively. The insecticidal effect of SINPV is increased by the addition of the two compounds and especially the compound 3b shows more obvious synergy effect.
合成了两种基于含磺酸钠单元的 1,3,4-噁二唑的新型对称二苯乙烯光学增亮剂。通过 NMR 和元素分析对两个目标化合物进行了表征。通过不同溶液中的紫外-可见吸收和荧光发射光谱研究了目标化合物的光物理过程。将这两种光学增亮剂用作斜纹夜蛾核多角体病毒（SINPV）对 2 龄斜纹夜蛾幼虫的辐射保护剂。结果表明，两种化合物均表现出强烈的蓝色荧光发射，在 DMF 中的荧光量子产率分别为 0.86 和 0.75。添加这两种化合物可提高 SINPV 的杀虫效果，特别是化合物 3b 表现出更明显的协同作用。
