Design, synthesis, and characterization of mesogenic amine-capped nematic gold nanoparticles with surface-enhanced plasmonic resonances

Yu, Chih H.; Schubert, Christopher P. J.; Schubert, Christopher P. J.; Welch, Chris; Tang, Bai J.; Tamba, M. Gabriela; Mehl, Georg H.

Abstract

The use of the liquid-crystalline state to control the assembly of large (>5 nm) gold nanoparticles (NPs) is of considerable interest because of the promise of novel metamaterial properties of such systems. Here we report on a new approach for the preparation of large nematic gold NPs using a bifunctional capping agent that enables control over the particle size and serves as a linkage for subsequent functionalization with mesogenic groups. Properties of the NPs were characterized by HRTEM, NMR, DSC, TGA, UV/vis, OPM, and XRD studies. The results confirmed the formation of a stable nematic mesophase above 37.5 °C for NPs in the 6–11 nm size range.

Citation

Yu, C. H., Schubert, C. P. J., Welch, C., Tang, B. J., Tamba, M. G., & Mehl, G. H. (2012). Design, synthesis, and characterization of mesogenic amine-capped nematic gold nanoparticles with surface-enhanced plasmonic resonances. Journal of the American Chemical Society, 134(11), 5076-5079. https://doi.org/10.1021/ja300492d

• Journal Article Type: Article
• Acceptance Date: Feb 2, 2012
• Online Publication Date: Mar 7, 2012
• Publication Date: Mar 21, 2012
• Deposit Date: Nov 13, 2014
• Journal: Journal Of The American Chemical Society
• Print ISSN: 0002-7863
• Electronic ISSN: 1520-5126
• Publisher: American Chemical Society
• Peer Reviewed: Peer Reviewed
• Volume: 134
• Issue: 11
• Pages: 5076-5079
• DOI: https://doi.org/10.1021/ja300492d
• Public URL: https://hull-repository.worktribe.com/output/467811
• Publisher URL: https://pubs.acs.org/doi/10.1021/ja300492d