[1] [1] Xu X Y, Robert R, Gu Y L, et al. J. Am. Chem. Soc., 2004, 126(40): 12736.

[2] [2] Wang Y F, Hu A G. J. Mater. Chem. C, 2014, 2(34): 6921.

[3] [3] Li H, Kang Z, Liu Y, et al. J. Mater. Chem., 2012, 22(46): 24230.

[4] [4] Lu W, Qin X, Liu S, et al. Analytical Chemistry, 2012, 84(12): 5351.

[5] [5] Zhao H X, Liu L Q, Liu Z D, et al. Chem. Commun., 2011, 47(9): 2604.

[6] [6] Li J Z, Wang N Y, Tran T T, et al. Analyst, 2013, 138(7): 2038.

[8] [8] Clarkson T. W, Magos L. Crit. Rev. Toxicol., 2006, 36(8): 609.

[9] [9] Zhang R, Chen W. Biosensors and Bioelectronics, 2014, 55: 83.

[10] [10] Lu J, Yang J X, Wang J Z, et al. ACS Nano, 2009, 3(8): 2367.

[11] [11] Zhu C, Zhai J F, Dong S. Chem. Commun., 2012, 48(75): 9367.

[12] [12] Liu H P, Ye T, Mao C D. Angew. Chem. Int. Ed., 2007, 46(34): 6473.

[13] [13] Zhou J G, Booker C, Li R Y, et al. J. Am. Chem. Soc., 2007, 129(4): 744.

[14] [14] Li H T, He X D, Kang Z H, et al. Angew. Chem. Int. Ed., 2010, 49(26): 4430.