“Synthesis of fluorescent a-chymotrypsin A-functionalized gold nanoclusters and their application to blot-based technology for Hg2+ detection” Pengchang Liu, Li Shang, Hongwei Li, Yuxiao Cui, Yongmei Qin, Yuqing Wu, J. Kalervo Hiltunen, Zhijun Chen* and Jiacong Shen RSC Adv., 2014, 4, 31536-31543.