ATBTA-Eu3 is widely utilized in the field of luminescent materials due to its strong red emission under ultraviolet light. It is particularly effective in applications requiring high sensitivity and stability, such as in fluorescent sensors for detecting specific ions or molecules in environmental and biological samples. The compound's ability to emit intense red light makes it valuable in the development of advanced display technologies, including LED screens and lighting systems. Additionally, ATBTA-Eu3 is employed in anti-counterfeiting measures, where its unique luminescent properties are used to create secure markings on documents, currency, and high-value products. Its use in bioimaging is also notable, as it helps in visualizing cellular structures and processes with high clarity.