Fine-tuning nanoparticle size by oligo(guanine)n templated synthesis of CdS: An AFM study

Lorenzo Berti, Andrea Alessandrini, Manuele Bellesia, Paolo Facci

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


We are presenting a method for modulating the size of CdS nanoparticles by templating their formation with oligo(guanine)noligomers where n varied from 5 to 20. The variation in template length resulted in observable changes in the size distribution of the CdS nanoparticles. Statistical analysis of AFM images showed a general trend whereby the CdS average height decreased for longer oligoGn and increased for shorter oligoGn. Concomitantly, shorter oligoGn yielded more dispersed populations, while longer oligoGn gave less dispersed populations. This synthetic methodology could be extended to the synthesis of other nanoparticles and even to mixed-metal nanoparticles resulting in a powerful method for fine-tuning size-dependent properties.

Original languageEnglish (US)
Pages (from-to)10891-10892
Number of pages2
Issue number22
StatePublished - Oct 23 2007
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry


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