Citation: Zeng, Jin-Ping; Zhang, Shi-Min; Zhang, Yun-Qian; Tao, Zhu; Zhu, Qian-Jiang; Xue, Sai-Feng; Wei, Gang (2010). Use of Silver(I) and Copper(II) Ions to Assist the Self-Assembly of Polyrotaxanes Incorporating Symmetrical \a,\a′,\d,\d′-Tetramethyl-cucurbit[6]uril. Crystal Growth & Design, 10, pp. 4509-.