Li, Z., Bian, Q., Zhu, G., Li, S., Yan, L., Dong, X., Li, J., Dong, B. (2026). Crystal‐Field‐Weakening Engineering Unlocks Ultra‐Efficient Eu 2+ Near‐Infrared Emission for Emerging Spectroscopic Applications. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.3509299