State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
Anal Methods. 2020 Nov 28;12(44):5353-5359. doi: 10.1039/d0ay01456g. Epub 2020 Oct 26.
A hydroxyl functionalized perylene monoimide probe (PMI-OH) was prepared and self-assembled with the nonionic surfactant Triton X-100 (TX100) to fabricate a fluorescent micelle sensor for the selective and sensitive detection of picric acid (PA), a common explosive and environmental pollutant. The synthesized PMI-OH probe exhibited excimer fluorescence emission, and the intensity of the excimer fluorescence emission was significantly enhanced after the PMI-OH probe formed micelles with TX100. The obtained PMI-OH@TX100 micelles presented excellent photoluminescence properties and had a maximum fluorescence emission at 630 nm. The red fluorescence of the PMI-OH@TX100 micelles was quenched upon introduction of the nitro explosive PA due to electron transfer from the donor (PMI-OH) to the acceptor (PA). The fluorescence quenching of the fluorescent micelle sensor was proportional to the concentration of PA in the range of 2 to 10 μM. The limit of detection was 500 nM using 3σ/k. Thus, the developed PMI-OH@TX100 micelle sensor has great potential to detect PA in ordinary samples.
一种羟基功能化苝酰亚胺探针（PMI-OH）被制备出来，并与非离子表面活性剂 Triton X-100（TX100）自组装，以制造一种荧光胶束传感器，用于选择性和灵敏地检测苦味酸（PA），一种常见的爆炸物和环境污染物。合成的 PMI-OH 探针表现出激基缔合物荧光发射，并且在 PMI-OH 探针与 TX100 形成胶束后，激基缔合物荧光发射的强度显著增强。所得的 PMI-OH@TX100 胶束具有优异的光致发光性能，在 630nm 处具有最大荧光发射。由于电子从供体（PMI-OH）转移到受体（PA），当引入硝基爆炸物 PA 时，PMI-OH@TX100 胶束的红色荧光被猝灭。荧光胶束传感器的荧光猝灭与 PA 的浓度在 2 到 10μM 的范围内呈正比。使用 3σ/k，检测限为 500nM。因此，开发的 PMI-OH@TX100 胶束传感器具有在普通样品中检测 PA 的巨大潜力。
