Issue 36, 2024

Multipodal Au–C grafting of calix[4]arene molecules on gold nanorods

Abstract

The interface robustness and spatial arrangement of functional molecules on metallic nanomaterials play a key part in the potential applications of functional nano-objects. The design of mechanically stable and electronically coupled attachments with the underlying metal is essential to bring specific desirable properties to the resulting hybrid materials. In this context, rigid multipodal platforms constitute a unique opportunity for the controllable grafting of functionality. Herein, we provide for the first time an in-depth description of the interface between gold nanorods and a chemically-grafted multipodal platform based on diazonium salts. Thanks to Raman and X-ray photoelectron spectroscopies and theoretical modeling, we deliver insights on the structural and electronic properties of the hybrid material. More importantly, it allows for the accurate assignment of Raman bands. The combination of experimental and theoretical results establishes the formation of four carbon–gold anchors for the calix[4]arene macrocycle leading to the exceptional stability of the functionalized nano-objects. Our results lay the foundations for the future design of robust and versatile platforms.

Graphical abstract: Multipodal Au–C grafting of calix[4]arene molecules on gold nanorods

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Article information

Article type
Edge Article
Submitted
09 Apr 2024
Accepted
11 Aug 2024
First published
16 Aug 2024
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2024,15, 14677-14684

Multipodal Au–C grafting of calix[4]arene molecules on gold nanorods

A. Tetenoire, A. Omelchuk, V. Malytskyi, I. Jabin, V. Lepeintre, G. Bruylants, Y. Luo, A. Fihey, M. Kepenekian and C. Lagrost, Chem. Sci., 2024, 15, 14677 DOI: 10.1039/D4SC02355B

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