Xu, Z., Chen, F., Gao, H., Chen, E., Wang, Y., Huang, H. (2026). π ‐Conjugated Aligned Polar [CO 3 ] Triangulars Synergizing Hydroxylation Enables Stress‐Enhanced Geometric–Electronic Asymmetries for Hydrogen Piezoevolution. Advanced Materials. https://doi.org/10.1002/adma.74229