Preparation of nanomaterials (NMs) using bio-molecules such as DNA as scaffolds is a simple, greener, and reliable way of designing the size and shape selective NMs. The Rh nanoparticles prepared on DNA scaffolds generate perfect nano-networks structure by utilizing a simple wet-chemical method in presence of NaBH4 as reducing agent. The prepared Rh nanoparticles on DNA scaffolds were effectively utilized for Surface-Enhanced Raman Scattering (SERS) studies using methylene blue (MB) as a SERS probe molecule. The DNA facilities to control the Rh NPs to grow below 5 nm in diameter and effectively utilized to increase the Raman signal. The highest SERS enhancement factor (EF) calculated was 1.19×105 for the lowest probe detection limit of 10-6 M. The stability of these Rh nano-networks were verified by aging the sample for more than six months which shows the same SERS efficiency.
Rh Nano-networks; Biomolecule; DNA; Hotspot; Enhancement factor Rh Nano-networks; Biomolecule; DNA; Hotspot; Enhancement factor Rh Nano-networks; Biomolecule; DNA; Hotspot; Enhancement factor