Acylhydrazone-Functionalized Waterborne Polyurethane Coating: An Intelligent Protective Material Integrating High Strength and Toughness, Self-Healing and Acid-Responsive Fluorescence. - Yang JY; Guo GY; Liu MH; Qiao JY; Chu JF; Tong XW; Yu HT; Pan GF (ACS macro letters, 2026)