<p>Fluorescent corrosion indicators can identify underlying corrosion on metallic substrates by detecting metal ions resulting from corrosion processes. Nevertheless, the direct incorporation of fluorescent probes into the coating may result in numerous adverse effects. To maximize effective application, encapsulating these probes in specific carriers is considered to be a viable technique. In this work, the design and application of a new fluorescent probe were reported, which contains o-benzylaminophenol (BC) as fluorophores and nanomesoporous silica (MSP) as carrier. MSP, characterized by an average particle size of 90&#xa0;nm, was synthesized using a sol-gel process. BC was synthesized, which exhibited yellowish-green fluorescence upon the addition of aluminum nitrate, methanol, and water. A novel intelligent container with the function of early corrosion warning was developed by incorporating BC into the MSP carrier by vacuum impregnation. BC@MSP smart containers were included in the solvent-based polyurethane coatings and applied on 2024-T3 aluminum alloy. The coating is engineered to identify corrosion within 24&#xa0;h following exposure to 3.5 wt.% NaCl by the formation of a complex by BC reacting with metal ions (Al³⁺). Electrochemical impedance evidenced that the epoxy coating with 4 wt.% BC@MSP presents high corrosion resistance even after 28 d.</p>