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Synthesis and characterization of fluorescent gold nanoclusters
Author(s) -
Lien Nghiem Thi Ha,
Hoang Nguyen Dinh,
Nghia Nguyen Trong,
Hoa Do Quang
Publication year - 2018
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.1002/vjch.201800030
Subject(s) - nanoclusters , fluorescence , quantum yield , absorption (acoustics) , photochemistry , aqueous solution , materials science , absorption spectroscopy , characterization (materials science) , nanotechnology , chemistry , optics , physics , composite material
The fluorescent gold nanoclusters (AuNCs) have been synthesized using aqueous reduction of chloroaric acid with mecapto undecanoic acid (MuA) as a thiol protecting agent. These AuNCs exhibited a strong absorption at 370 nm and a fluorescent emission in visible region. The emission spectrum can be tuned from 520 to 560 nm by controlling the NaOH concentrations during the reaction process. The gold nanoclusters exhibit a quantum yield of few percents and a fluorescence lifetime of ~2 ns. These properties of AuNCs provide greatly promising for biological applications.