Ni, X. L., Zeng, X., Redshaw, C., & Yamato, T. (2011). Synthesis and evaluation of a novel pyrenyl-appended triazole-based thiacalix[4]arene as a fluorescent sensor for Ag+ ion. Tetrahedron, 67(18), 3248-3253. https://doi.org/10.1016/j.tet.2011.03.008