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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/38485

Title: Photoluminescent gold nanodots: role of the accessing ligands
Authors: Yu-Ting Tseng;Zhiqin Yuan;Ya-Yun Yang;Chih-Ching Huang;Huan-Tsung Chang
Contributors: 國立臺灣海洋大學:生命科學暨生物科技學系
Date: 2014
Issue Date: 2016-09-07T07:01:41Z
Publisher: RSC Advances
Abstract: Astract: In this study, we prepared a series of photoluminescent gold nanodots (Au NDs) from gold nanoparticles (∼3 nm) via etching with 11-mercaptoundecanoic acid (11-MUA) under various ionic strengths or various co-accessing alkanethiol (RSH) ligands. We have demonstrated that self-assembly of 11-MUA molecules on Au NDs under various salt concentrations, and co-immobilization of (11-mercaptoundecyl)trimethylammonium bromide/11-MUA or α-lipoic acid/11-MUA on Au NDs play significant roles in determining particle sizes and thus their optical properties, such as quantum yield, absorption and emission wavelength, and emission lifetime. Our findings reveal that the photoluminescence of Au NDs depends on the ligand density, chain length and electron donation of alkanethiols, and the core size.
Relation: 4
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/38485
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