Electrostatically entrapped DNA molecules in lipid thin films as templates for the in situ growth of silver nanoparticles

Ashavani Kumar, Vidya Ramakrishnan, Rajesh Gonnade, Krishna N. Ganesh, Murali Sastry

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)


The electrostatic entrapment of double-helical DNA molecules in thermally evaporated fatty amine films and their use as templates for the growth of Ag nanoparticles by an ion exchange/reduction process has been described. Entrapment of the DNA molecules in the amine matrix leads to charge overcompensation and the possibility of binding metal cations such as Ag+ to the surface of the immobilized DNA molecules. In situ reduction of the Ag+ ions leads to the formation of silver nanoparticles on the surface of the DNA templating molecules in a close-packed structure within the lipid matrix.

Original languageEnglish
Pages (from-to)597-600
Number of pages4
Issue number5
Publication statusPublished - Oct 2002
Externally publishedYes

Cite this