Kapoor Sudhir, Joshi Ravi, Mukherjee Tulsi
Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India.
J Colloid Interface Sci. 2003 Nov 1;267(1):74-7. doi: 10.1016/j.jcis.2003.07.022.
In situ synthesis of fine thallium and cadmium particles has been carried out by gamma-irradiation at room temperature in a preorganized polyacrylamide gel. It appears that Cd and Tl ions are chelated by the polymer matrix through physical entrapment as well as by weak chemical complexation. The metallic nanoparticles of Cd or Tl are well dispersed in the polymer matrix. The nanoparticles are stable in air and transfer electrons to methyl viologen (paraquat; 1,1'-dimethyl-4,4'-dipyridinium dichloride; MV(2+)(Cl(-))(2)). The radical, MV(+.), formed upon electron transfer, also gets trapped in the polymer matrix and shows high stability even in the presence of air.
