Polyol process has provided detailed insight for precise shape control of silver nanostructures. However, despite the significant progress in studying shape control and polyol process, research in this context <i>via </i>1,3-propanediol has been explored to a limited extent. In this study, we explore the versatile properties of 1,3-propanediol-based polyol synthesis in order to investigate the tunability of shapes of silver nanostructures. The type, strength and concentration of reducing agents as well as the presence of polyvinylpyrrolidone (PVP) contribute advanced effects for precise tuning in nanostructures formation. We found that the high yield of monodispersed nanorods occurs as a result of precise combination of mild reducing agents and moderate molecular weight of PVP at a defined reaction temperature in 1,3-propanediol. Similarly, monodispersed nanocubes formation is dependent on PVP with high molecular weight dissolved in 1,3-propanediol. The self-seeding synthesis process is the generation of Single-crystal seed which is believed to form uniform nanocubes. On the other hand, nanorods are the product obtained in the form of Penta twinned seeds. Beyond the structural aspect, in-situ surface functionalization helps to form layer-by-layer assembly system for the potential sensing applications. The assembly process <i>via</i> metal-catalyzed metal enforcement was performed on the surface of nanorods, nanocubes, multi-faceted nanoparticles and nanobullets and analyzed using surface-enhanced Raman scattering (SERS) sensing.

Colloidal nanostructures through polyol synthesis and their functional assemblies for SERS sensing applications

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.