pH-dependent color change of colloidal dispersions of gold nanoclusters: Effect of stabilizer Yukihide Shiraishi, Daisuke Arakawa and Naoki Toshima Eur. Phys. J. E, 8 4 (2002) 377-383 Published online: 25 January 2014 DOI: 10.1140/epje/i2000-10103-4