This article has been retracted on the initiative of the corresponding author because significant portions were copied verbatim by the first author from an article that had already been published in Chemical Communications, 2011, 47, 11721–11723, doi:10.1039/C1CC14687D. Authors have admitted their mistake and apologized unreservedly to the authors of the above mentioned manuscript, to Springer, and to the readers of Applied Nanoscience. The online version of this article contains the full text of the retracted article as electronic supplementary material.