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Updated: Jul 11, 2026
A Simple Method for the Size Controlled Synthesis of Stable Oligomeric Clusters of Gold Nanoparticles under Ambient Conditions
Published on: February 5, 2016
Fine-tuning nanoparticle size by oligo(guanine)n templated synthesis of CdS: an AFM study
Lorenzo Berti1, Andrea Alessandrini, Manuele Bellesia
1National Research Center on nanoStructures and bioSystems at Surfaces S3, INFM-CNR, Via Campi 213/A, 41100 Modena, Italy. berti.lorenzo@unimo.it
Abstract:
We are presenting a method for modulating the size of CdS nanoparticles by templating their formation with oligo(guanine)n oligomers 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.
