首页> 外文期刊>Nano letters >Metal-enhanced fluorescence of chlorophylls in single light-harvesting complexes
【24h】

Metal-enhanced fluorescence of chlorophylls in single light-harvesting complexes

机译:单采光复合物中叶绿素的金属增强荧光

获取原文
获取原文并翻译 | 示例
           

摘要

Ensemble and single-molecule spectroscopy demonstrates that both emission and absorption of peridinin-chlorophyll-protein photosynthetic antennae can be largely enhanced through plasmonic interactions. We find up to 18-fold increase of the chlorophyll fluorescence for complexes placed near a silver metal layer. This enhancement, which leaves no measurable effects on the protein structure, is observed when exciting either chlorophyll or carotenoid and is attributed predominantly to an increase of the excitation rate in the antenna. The enhancement mechanism comes from plasmon-induced amplification of electromagnetic fields inside the complex. This result is an important step toward applying plasmonic nanostructures for controlling the optical response of complex biomolecules and improving the design and functioning of artificial light-harvesting systems.
机译:集成和单分子光谱表明,通过等离激元相互作用可以大大提高皮兰定-叶绿素-蛋白光合触角的发射和吸收。我们发现放置在金属银层附近的络合物的叶绿素荧光增加了18倍。当激发叶绿素或类胡萝卜素时,观察到这种增强,对蛋白质结构没有可测量的影响,并且主要归因于天线中激发速率的增加。增强机制来自等离激元诱导的复合体内电磁场的放大。这一结果是朝着应用等离激元纳米结构来控制复杂生物分子的光学响应并改善人工光收集系统的设计和功能的重要一步。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号