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首页> 外文期刊>ACS applied materials & interfaces >Fabrication of Stable and Luminescent Copper Nanocluster-Based AIE Particles and Their Application in beta-Galactosidase Activity Assay
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Fabrication of Stable and Luminescent Copper Nanocluster-Based AIE Particles and Their Application in beta-Galactosidase Activity Assay

机译：基于稳定的发光铜纳米光栅AIE颗粒的制备及其在β-半乳糖苷酶活性测定中的应用

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摘要

Thiolated copper nanoclusters (CuNCs) with aggregation-induced emission characteristic are becoming a novel luminescent material, but it is still a challenging task to retain its bright luminescence in a neutral solution. In this work, we report a new copper nanocluster with aggregation-induced emission (AIE) enhancement property using a hydrophobic molecule as the protecting ligand, and brightly luminescent AIE particles of copper nanocluster were prepared via hydrophobic interaction. These CuNCs AIE particles possess uniform rod-like shapes, with sizes in hundreds of nanometer, and an intense luminescence; more importantly, its luminescence remains stable in neutral and alkaline solutions. It is found that 4-nitrophenol is able to effectively quench the luminescence of CuNC AIE particles through strong hydrophobic interaction and electron transfer between them. This strong quenching effect was adopted to develop a luminescent assay for beta-galactosidase at physiological condition. This work presents a demonstration of preparing CuNC AIE particles with bright luminescence at neutral condition and gives an example of the use of AIE particles in monitoring the enzyme activity.
机译：具有聚集诱导的发射特性的硫醇化铜纳米能器（CINC）正在成为一种新的发光材料，但仍然是在中性溶液中保持其亮的发光仍然是一个具有挑战性的任务。在这项工作中，我们使用疏水分子作为保护配体报告具有聚集诱导的发射（AIE）增强性的新铜纳米铜簇，并通过疏水相互作用制备铜纳米光泽颗粒的明亮的发光AIE颗粒。这些封闭件AIE颗粒具有均匀的棒状形状，尺寸在数百纳米和强烈的发光中;更重要的是，其发光在中性和碱性溶液中保持稳定。结果发现，4-硝基苯酚能够通过强烈的疏水相互作用和它们之间的电子转移来有效地终止Cunc Aie颗粒的发光。采用这种强烈的淬火效果在生理条件下为β-半乳糖苷酶进行发光测定。该工作呈现了在中性条件下用明亮的发光制备Cinc AIE颗粒的证明，并赋予使用AIE颗粒监测酶活性的实施例。

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