A silicon-cored fluoranthene derivative as a fluorescent probe for detecting nitroaromatic compounds
作者:Huanling Xie、Hua Wang、Zhen Xu、Ruijing Qiao、Xuefeng Wang、Xianming Wang、Lianfeng Wu、Haifeng Lu、Shengyu Feng
DOI:10.1039/c4tc01183j
日期:——
Two fluoranthene derivatives, nonsilicon-cored 7,10-diphenylfluoranthene (DF) and silicon-cored bis(7,10-diphenylfluoranthen-8-yl)diphenylsilane (BDS), were synthesized via the Knoevenagel/Diels–Alder method. The thermal properties and fluorescence quenching behavior of the derivatives with nitroaromatic compounds were investigated. Aside from its better thermal properties, BDS also showed lower detection limit, higher sensitivity, and higher quenching efficiency in detecting nitrobenzene and m-dinitrobenzene than DF. The detection limits of BDS were 50 and 10 ppm toward nitrobenzene and m-dinitrobenzene, respectively. Moreover, the Stern–Volmer plot of BDS swiftly curved upward, suggesting a super amplification effect. This result can be attributed to the special tetrahedral structure of BDS. Thus, BDS has great potential in the detection of explosives. This work may serve as a basis for designing new organic materials with great efficiency and sensitivity in fluorescence detection.
通过 Knoevenagel/Diels-Alder 方法合成了两种荧蒽衍生物,即非硅包壳的 7,10-二苯基荧蒽(DF)和硅包壳的双(7,10-二苯基荧蒽-8-基)二苯基硅烷(BDS)。研究了这些衍生物与硝基芳香族化合物的热性能和荧光淬灭行为。与 DF 相比,BDS 除了具有更好的热性能外,在检测硝基苯和间二硝基苯时还表现出更低的检测限、更高的灵敏度和更高的淬灭效率。BDS 对硝基苯和间二硝基苯的检测限分别为 50 和 10 ppm。此外,BDS 的斯特恩-沃尔默曲线迅速向上弯曲,表明其具有超强的放大效应。这一结果可归因于 BDS 的特殊四面体结构。因此,BDS 在检测爆炸物方面具有很大的潜力。这项工作可作为设计新型有机材料的基础,使其在荧光检测方面具有更高的效率和灵敏度。