Effect of Hybridization on the Photoluminescence Properties of Atomically Precise Silver Nanoclusters

The Förster Resonance Energy Transfer (FRET) is a widely used mechanism harnessed for sensing applications. For temporal stability of the energy transfer between donor and acceptor molecules their photostability and maintenance of the coupling geometry are important. A donor‐acceptor system was crea...

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Bibliographic Details
Published in:ChemNanoMat : chemistry of nanomaterials for energy, biology and more biology and more, 2024-08, Vol.10 (8), p.n/a
Main Authors: Becker, Charline, Graf, Sebastian, Mews, Alf, Parak, Wolfgang J., Chakraborty, Indranath
Format: Article
Language:English
Subjects:
Nanocluster
Nanohybrids
Photoluminescence
Silicon
Silver
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Summary:The Förster Resonance Energy Transfer (FRET) is a widely used mechanism harnessed for sensing applications. For temporal stability of the energy transfer between donor and acceptor molecules their photostability and maintenance of the coupling geometry are important. A donor‐acceptor system was created from silicon nanoclusters (Si NCs) and silver nanoclusters (dihydrolopic acid (DHLA)‐protected Ag29 NCs). Optical spectroscopy and lifetime measurements helped to understand the energy transfer process between the Si NCs and Ag29 NCs. Compared with donor‐acceptor pairs based on gold nanocluster and organic dyes, the FRET pair formed between Si NCs and Ag29 (DHLA)12 NCs reaches a coequal efficiency of 60 %. A fine‐tuning of the system‘s parameters opens the door to investigating the sensitivity of the two nanocluster FRET system to various species and incorporating highly photostable moieties in a process relying on photoluminescence. The photophysical properties of Förster Resonance Energy Transfer (FRET) pairs formed between silicon nanoclusters (Si NCs) and silver nanoclusters (Ag29 (DHLA)12 NCs) were investigated. Hereby different modes of linkage between the different nanoclusters were examined. The usability of this FRET system was demonstrated by ratiometric pH sensing. Photostability, which is crucial for such application was demonstrated.
ISSN:2199-692X
2199-692X
DOI:10.1002/cnma.202300453