Amphiphilic gemini-iridium (III) complex for rapid and selective detection of picric acid in water and intracellular.
Amphiphilic gemini-iridium (III) complex for rapid and selective detection of picric acid in water and intracellular.
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DOI：
10.1016/j.talanta.2019.120372
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发表时间：
2020-02
期刊：
影响因子：
6.1
通讯作者：
Sili Yi;Zhen Lu;Zeng-hong Xie;Linxi Hou
中科院分区：
文献类型：
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作者：
Sili Yi;Zhen Lu;Zeng-hong Xie;Linxi Hou
受双子表面活性剂的结构和性质的启发，开发了一种新型的两亲性双子铱配合物（GIC-Ir），该配合物在水中能自发自组装形成囊泡，并具有良好的稳定性和高的发光强度。由于GIC-Ir囊泡中的芳香基团和两个带正电荷的长链季铵基团，使得GIC-Ir囊泡具有捕获带负电荷的苦味酸（PA）的能力，并能快速选择性地猝灭GIC-Ir的发光，极大地促进了GIC-Ir与PA之间的相互作用。理论计算和光谱研究表明，光诱导电子转移和共振能量转移可能是导致发射猝灭的原因。此外，真实的水样和体外研究进一步证明，GIC-Ir可以作为一种有前途的化学传感器，用于检测水和细胞内的PA。
Inspired by the structure and properties of gemini surfactant, a novel amphiphilic gemini-iridium complex (GIC-Ir) has been developed, which can spontaneously form vesicles by self-assembly and exhibit excellent dispersibility and high emission intensity in water. The emission of GIC-Ir can be rapidly and selectively quenched by picric acid (PA) due to the aromatic groups and two long-chain quaternary ammonium (QA) groups with positive charge, which endow GIC-Ir vesicles outstanding capability to capture negatively charged PA, and greatly promote the interaction between GIC-Ir and PA. Theoretical calculations and spectral studied indicated that the photoinduced electron transfer and resonance energy transfer may be responsible to the emission quenching. Furthermore, the real water samples and in vitro studies further prove that GIC-Ir can be used as a promising chemosensor for the detection of PA both in water and intracellular.