ABSTRACT

The direct utilization of fluorescent signals to explore biological property or sensing performance has been extensively studied in recent years, whereas the employment of lanthanide ions as tracking agents for the shape memory process will be very rare. In this work, polyvinyl alcohol (PVA) has been attached by tryptophan and such polymeric host could bind well with both europium and terbium ions. However, the intra-molecular energy transfer efficiency was relatively low and the second ligand marbofloxacin has been incorporated. In this way, typical red and green emissions derived from europium and terbium ions are afforded. These findings lead to the systematic exploitation of polymer chain network with striking lanthanide luminescence and the detailed shape memory evolution can be recorded. In addition, such organic-inorganic hybrid hydrogel is valuable in metal management and the selective fluorescent responses to copper ions are evaluated. Therefore, the new composite exhibits potentials in signaling and determination of target species with biological or environmental importance.

摘要

近年来，已经广泛研究了直接利用荧光信号来探索生物特性或传感性能，而使用镧系元素离子作为形状记忆过程的跟踪剂将非常罕见。在这项工作中，聚乙烯醇 (PVA) 已被色氨酸附着，这种聚合物主体可以与铕和铽离子很好地结合。然而，分子内能量转移效率相对较低，并且已掺入第二配体马波沙星。以这种方式，提供了源自铕和铽离子的典型红色和绿色发射。这些发现导致对具有惊人镧系元素发光的聚合物链网络的系统开发，并且可以记录详细的形状记忆演变。此外，这种有机-无机混合水凝胶在金属管理中很有价值，并且评估了对铜离子的选择性荧光响应。因此，新的复合材料在信号传递和确定具有生物学或环境重要性的目标物种方面具有潜力。