Electrochemiluminscnce (ECL) is about light generation in the course of an efficient electron transfer in the vicinity of an electrode. ECL has been propagated at the interface of electroanalytical and spectroscopic techniques, and has found worldwide applications in, for example, healthcare, physical and analytical chemistry fields. There have been a vast number of molecules and nanomaterials that are examined as ECL emitters. Among those emitters atomically precise thiolate-protected gold nanoclusters stood out rapidly owing to their well-defined geometric structures and inherent molecular-type opto-electronic properties. Recently, we showed that these gold nanoclusters emit ECL at Near-IR region, that is well-suited for biological applications (e.g., bio-imaging). Here, we report one-pot preparation of a gold nanocluster that decorated with a bulky aliphatic ligand (e.g., tert-buthyl thiol). The ECL mechanistic investigations, using conventional and newly established ECL spooling spectroscopy, show that this nanocluster emits ECL light at the Near-IR region.
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