Triplet-Mediated Photon Upconversion via Near-Infrared-II Excitation without Tetracene Derivatives - Ran Li; Lin-Han Jiang; Dong-Xue Guo; Ying-Ze Li; Yun-Rong Li; Hong-Juan Feng; Ming-Yu Zhang; Ling Huang; Dai-Wen Pang (Journal of the American Chemical Society, 2026)