Dynamic Features Of Rod-Shaped Au Nanoclusters
PHYSICAL CHEMISTRY OF INTERFACES AND NANOMATERIALS XIV(2015)
Abstract
Gold nanoclusters hold many potential applications such as biosensing and optics due to their emission characteristics, small size, and non-toxicity. However, their low quantum yields remain problematic for further applications, and their fluorescence mechanism is still unclear. To increase the low quantum yields, various methods have been performed: doping, tuning structures, and changing number of gold atoms. In the past, most characterizations have been performed on spherical shaped nanoclusters; in this paper, several characterizations of various rod-shaped Au nanoclusters specifically on Au-25 are shown. It has been determined that the central gold atom in Au-25 nano-rod is crucial in fluorescence. Furthermore, single molecule analysis of silver doped Au-25 nano-rod revealed that it has more photo-stability than conjugated polymers and quantum dots.
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Key words
Au nanocluster,single molecule,fluorescence
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