Aggregation-induced emission has provided fluorescence enhancement strategies for metal nanoclusters. However, the morphology of the aggregated nanoclusters tended to be irregular due to the random aggregated route, which would result in the formation of an unstable product. Herein, copper nanoclusters were directly synthesized by using l-cysteine as both the reducing and protection ligand. Initially, the structure of the product was irregular. Furthermore, Ce³⁺ was introduced to re-arrange the aggregates through a crosslinking avenue. It was interesting to find that well-ordered three-dimensional nanomaterials with mesoporous sphere structures were obtained after re-aggregation. On the basis of the stability test at a relatively high temperature and the light-emitting diode fabrication investigation, it revealed that the regulated product demonstrated more promising stability and color purity for practical applications than the random aggregated product with irregular structures.

Infections from antibiotic-resistant bacteria have caused huge economic loss and numerous deaths over the past decades.

The increasing expense and complexity of conventional physical exams may lead to delayed disease diagnoses, creating substantial difficulties for many patients. In response, smartphone-based sensing technologies have emerged, offering a promising solution to make health diagnostics more accessible. Perovskite-based nanomaterials stand out with their adaptable structure, making them an important player in sensor enhancement due to their wide-ranging sensing capabilities and excellent physicochemical characteristics. While perovskites demonstrate advantageous optoelectronic properties, fortifying their stability is a crucial aspect that continues to be a central theme in current research and development endeavors. This article examines the advancement of smartphone-based sensors via the incorporation of Perovskite-based nanomaterials and suggests strategies for further optimizing their characteristics. It provides a detailed overview of their applications in different smartphone sensing areas, including but not limited to optical and photothermal-pyroelectric methods. Our in-depth analysis highlights the crucial role of Perovskite-based nanomaterials in the development of devices and the complexity of sensor manufacturing. We also explore their potential in seamlessly integrating with wearable devices connected to smartphones, thus streamlining the diagnosis process. Moreover, we anticipate their revolutionary impact in advancing smartphone sensors. This combination is poised to establish a more accessible and unified method for health monitoring.