Optical properties of silver clusters and their complexes with biomolecules at surfaces

银簇及其表面生物分子复合物的光学性质

• 批准号: 5406373
• 负责人: Professorin Dr. Vlasta Bonacic-Koutecky
• 金额: --
• 依托单位: Institut für Physikalische und Theoretische Chemie
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2003
• 资助国家: 德国
• 起止时间: 2002-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5406373?language=en
• 关键词: Optical; properties; silver; clusters; their

Photoactivated fluorescence has been recently produced upon visible illumination of silver oxide films. It is assumed that the silver nanoclusters being photochemically generated from the silver oxide are responsible for this finding. Such newly identified properties of nanoparticles open the possibility to photochemically control their fluorescent spectral features. Agn photoproduction from silver oxide might be utilized in optical storage materials to write data. Observed strong size dependent fluorescence in small Ag clusters produced by silver oxide represents a potential for parallel readout and increased storage capacity due to the possibility of color mixing from different cluster sizes. The mechanisms responsible for these phenomena are not known. The goal of this project is to find mechanisms controlling the multicolored fluorescent Ag nanocluster creation from silver oxides based on ab initio theoretical approach.

最近在氧化银薄膜的可见光照射下产生了光活化荧光。据推测，这一发现是由氧化银光化学产生的银纳米簇造成的。纳米粒子的这种新发现的特性为光化学控制其荧光光谱特征提供了可能性。氧化银产生的银光可用于光存储材料中写入数据。在氧化银产生的小银簇中观察到的强尺寸依赖性荧光代表了并行读出的潜力，并且由于不同簇尺寸的颜色混合的可能性而增加了存储容量。造成这些现象的机制尚不清楚。该项目的目标是基于从头算理论方法，找到控制由氧化银产生多色荧光银纳米团簇的机制。