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Dual-emitting barium based metal-organic nanosheets as a potential sensor for temperature and anthrax biomarkers

机译：双发射钡基金属 - 有机纳米片作为温度和炭疽生物标志物的潜在传感器

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The development of novel 2D materials, due to the promising applications they have enabled through their unique properties, has attracted increasingly more research interest. In this regard, novel dual-emitting coordination polymer nanosheets were developed by doping Eu3+ and Tb3+ ions into the nanostructures of the [Ba(DPA)(2)(H2O)(2)](n) (DPA = dipicolinic acid) coordination polymer (BCP). Single crystal x-ray crystallography revealed that BCP is a 1D coordination polymer and its three-dimensional supramolecular architecture is constructed with a relatively strong hydrogen bonding in the ac crystallographic plane and weak non-covalent interactions along the b axis. Using energetic ultrasound irradiations, synthesis of nanoscale BCP along with the unzipping of the weak interactions between the ac layers was accomplished. The resulting BCP nanosheets was used as the host lattice and was doped with Eu3+ and Tb3+ ions. Remarkably, the sensing ability of both Eu3+ and Tb3+ doped coordination polymer (Ln@BCP) nanosheets towards temperature and the DPA anthrax biomarker were investigate. The high relative sensitivity value of 2.42% K-1 and their reusability, makes Ln@BCP nanosheets an ideal candidate for the nanothermometry. They also exhibited high selective detection characteristics towards the DPA anthrax biomarker with a 0.03 nM detection limit. Therefore, Ln@BCP nanosheets can also be considered as an efficient multi-responsive optical sensor.
机译：新型2D材料的发展，由于他们通过独特的财产启用的有前途的应用，引起了越来越多的研究兴趣。在这方面，新型的双发射配位聚合物纳米片被掺杂铕和铽离子进入的纳米结构开发[巴（DPA）（2）（H 2 O）（2）]（N）（DPA =吡啶二羧酸）配位聚合物（BCP）。单晶X射线晶体术显示，BCP是1D配位聚合物，其三维超分子架构在AC晶体平面中具有相对强的氢键合，并且沿B轴弱的非共价相互作用。完成了使用能量超声照射，完成了纳米级BCP的合成以及非AC层之间的弱相互作用。将得到的纳米片BCP被用作主晶格和掺杂了铕和铽离子。值得注意的是，这两种铕和铽的感测能力掺杂配位聚合物（LN @ BCP）朝温度和DPA炭疽生物标志物进行了调查纳米片。高相比灵敏度值为2.42％K-1及其可重用性，使LN @ BCP纳米纸张是纳米热测定法的理想候选者。它们还向DPA Anthrax生物标志物展现出具有0.03nm检测限的高选择性检测特性。因此，LN @ BCP Nanoshs也可以被认为是一种有效的多响应光学传感器。

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