Tang, Zhuo; Jiang, Fan; Yu, Luo-Ting; Cui, Xin; Gong, Liu-Zhu; Mi, Ai-Qiao; Jiang, Yao-Zhong; Wu, Yun-Dong Journal of the American Chemical Society, 2003 , vol. 125, # 18 p. 5262 - 5263