Covalent anchoring of atomically precise glutathione-protected gold nanoclusters on graphene oxide nanosheets
| Autor: | Martina Perić Bakulić, Pierre Mignon, Nandakumar Kalarikkal, Pierre F. Brevet, Rodolphe Antoine, Sabu Thomas, Franck Bertorelle, Srestha Basu, Isabelle Russier-Antoine, Hussein Fakhouri |
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| Přispěvatelé: | Optique non linéaire et interfaces (ONLI), Institut Lumière Matière [Villeurbanne] (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Spectrométrie des biomolécules et agrégats (SPECTROBIO), Ctr Excellence Sci & Technol Integrat Mediterrane (ICAST), University of Split, Physico-chimie théorique (THEOCHEM), International and Interuniversity Centre for Nanoscience and Nanotechnology (IIUCNN), Mahatma Gandhi University, School of Pure and Applied Physics |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
optoelectronics Electrospray ionization Oxide Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Nanoclusters law.invention chemistry.chemical_compound law Nanocomposite Graphene nonlinear optics Nonlinear optics [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology Fluorescence gold nanoclusters photovoltaics graphene oxide 0104 chemical sciences chemistry Covalent bond 0210 nano-technology [CHIM.OTHE]Chemical Sciences/Other |
| Zdroj: | Nano Express Nano Express, 2020, 1 (3), pp.030005. ⟨10.1088/2632-959X/abbe31⟩ |
| ISSN: | 2632-959X |
| Popis: | This paper describes the development of a novel method of producing nanocomposites consisting of gold nanoclusters anchored on graphene oxide nanosheets in a cost-effective and reproducible manner. The novelty of the technique hinges on the covalent functionalization of atomically precise subnanometer gold clusters protected by glutathione (Au15SG13 and Au25SG18) on to graphene oxide (GO) nanosheets according to the 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride crosslinking method, using the existing carboxylic groups present both at the surfaces of the nanoclusters and the GO nanosheets. The atomic precision of glutathione-protected gold nanoclusters was evidenced by electrospray ionization mass spectrometry. The formed hybrid nanocomposites were characterized by TEM measurements and exhibit nonlinear optical properties characteristic of GO, in particular a strong second harmonic scattering response as well as a multi-photon excited fluorescence spectrum characterized by a broad band in the visible range between 350 and 700 nm. Atomically precise nanoclusters covalently linked to GO nanosheets are therefore promising for new applications in the areas of optoelectronics and photovoltaics. |
| Databáze: | OpenAIRE |
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