Conformationally Constrained Bidentate Ligands Drive Record-High NIR Quantum Yield in Cu Nanoclusters - Ze-Yu Liu; Bao-Liang Han; Min Wei; Ling-Yun Hu; Geng-Geng Luo; Zhong-Hua Pan; Zhi-Lin Yang; Taeyeon Kim; Di Sun (Journal of the American Chemical Society, 2026)