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黄金纳米集团的超明亮发光:使Au (I) - 硫酸盐外具有度

Kyunglim Pyo¹, Viraj Dhanushka Thanthirige², Kyuju Kwak¹

¹†Department of Chemistry, Yonsei University, Seoul 120-749, Korea.

Journal of the American Chemical Society

|June 11, 2015

概括

研究人员通过将它们的外硬化为四氧化 (TOA) 离子来增强黄金集群的发光. 这一策略实现了超过60%的量子产量,为先进的光学和生物医学应用铺平了道路.

科学领域:

纳米材料科学科学纳米材料科学
摄影化学的使用.
材料化学材料化学

背景情况:

发光纳米材料对于显示器,光电子和生物医学成像至关重要.
原子精确的黄金集群为高光发光效率提供了潜力.
控制集群外结构是优化发光的关键.

研究的目的:

为了增强黄金集群的光发光量子产量.
为了研究外刚度对发光效率的影响.
为改进基于黄金集群的光学应用制定战略.

主要方法:

合成Au22 (((SG) 18黄金集群的合成.
采用四氧化 (TOA) 离子对黄金外进行化.
时间分辨率和温度依赖的光学测量.

主要成果:

在室温下达到超过60%的发光量子产量.
证明外刚度显著提高了发光量的量子效率.
证实了刚性Au(I) - thiolate外在增强发光中的作用.

结论:

硬化金是一种有效的策略,可以提高金中的光发光效率.
开发的方法为创建高性能发光黄金纳米材料提供了一条途径.
这项研究推进了黄金集群在发光显示器,传感器和生物医学成像中的潜力.

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