In Situ Visualization of Assembly and Photonic Signal Processing in a Triplet Light-Harvesting Nanosystem,Journal of the American Chemical Society

当前位置： X-MOL 学术 › J. Am. Chem. Soc. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

In Situ Visualization of Assembly and Photonic Signal Processing in a Triplet Light-Harvesting Nanosystem
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2018-03-09 , DOI: 10.1021/jacs.7b12519
Meng-Jia Sun _{1,

2} , Yingying Liu _{1,

2} , Yaming Yan _{2,

3} , Rui Li _{1,

2} , Qiang Shi _{2,

3} , Yong Sheng Zhao _{1,

2} , Yu-Wu Zhong _{1,

2} , Jiannian Yao _{1,

2}

Affiliation

Real-time visualization of assembly processes and sophisticated signal processing at the nanoscale are two challenging topics in photonic nanomaterials. Here, high-quality light-harvesting crystalline nanorods were developed by the coassembly of two polypyridyl Ir(III) and Ru(II) metallophosphors, behaving as the antenna chromophore and energy acceptor, respectively. By using a one-pot or stepwise growth condition, homogeneous and multiblock heterojunction nanorods were prepared, respectively. These nanostructures display multicolor phosphorescence from green to red due to the efficient triplet energy transfer and light-harvesting capability at low acceptor doping ratios. Heterojunction nanorods show gradient emission-color switches during different growth stages, in which the real-time stepwise assembly can be vividly visualized using fluorescence microscopy techniques. Triplet excitons were successfully manipulated in both homogeneous and heterojunction nanorods to realize waveguided green, orange, and red emissions and advanced photonic signal logics and encoding/decoding on single multiblock heterojunction nanorod.

中文翻译：

三重光捕获纳米系统中组装和光子信号处理的原位可视化

组装过程的实时可视化和纳米级复杂的信号处理是光子纳米材料中的两个具有挑战性的课题。在这里，通过将两种多吡啶基 Ir(III) 和 Ru(II) 金属磷光体共组装，开发了高质量的捕光晶体纳米棒，分别充当天线发色团和能量受体。通过使用一锅法或逐步生长条件，分别制备了均质和多嵌段异质结纳米棒。由于在低受体掺杂比下有效的三重态能量转移和光捕获能力，这些纳米结构显示出从绿色到红色的多色磷光。异质结纳米棒在不同的生长阶段显示出梯度发射颜色切换，其中实时逐步组装可以使用荧光显微镜技术生动地可视化。在同质和异质结纳米棒中成功操纵三重激子以实现波导绿色、橙色和红色发射以及先进的光子信号逻辑和编码/解码单个多块异质结纳米棒。

更新日期：2018-03-09

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11