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Tunneling Electron Induced Fluorescence from Single Porphyrin Molecules Decoupled by Striped-Phase Octanethiol Self-assembled Monolayer
Yan-min Kuang,Yun-jie Yu,Yang Luo,Jia-zhe Zhu,Yuan Liao,Yang Zhang,Zhen-chao Dong
Author NameAffiliationE-mail
Yan-min Kuang Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China  
Yun-jie Yu Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China  
Yang Luo Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China  
Jia-zhe Zhu Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China  
Yuan Liao Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China  
Yang Zhang Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China zcdong@ustc.edu.cn 
Zhen-chao Dong Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China zhyangnano@ustc.edu.cn 
Abstract:
We investigate tunneling electron induced luminescence from isolated single porphyrin molecules that are decoupled by striped-phase self-assembled monolayer of octanethiol from the underneath Au(111) substrate. Intrinsic single-molecule electroluminescence has been realized by such decoupling at both bias polarities. The photon emission intensity acquired from the molecular lobe is found stronger than that from the molecular center. These re-sults provide useful information on the understanding of electroluminescent behavior and mechanism in molecular tunnel junctions.
Key words:  Scanning tunneling microscope induced luminescence  Plasmonics  Porphyrin  Octanethiol  Self-assembled monolayer  Striped-phase
FundProject:
隧道电子激发的辛硫醇条纹相自组装膜上卟啉单分子荧光
邝艳敏,郁云杰,骆阳,朱嘉哲,廖源,张杨,董振超
摘要:
利用扫描隧道显微镜诱导发光技术,对单个卟啉分子的电致荧光现象进行了研究. 为了避免金属衬底对单个卟啉分子的荧光淬灭,利用条纹状辛硫醇自组装膜作为脱耦合层,实现了单个中性卟啉分子的电致荧光,并且发现分子荧光的产生呈现双极性特征. 另外,分子瓣上的荧光强度要强于分子中心的荧光强度.
关键词:  扫描隧道显微镜诱导发光  等离激元光子学  卟啉分子  辛硫醇  自组装膜  条纹相
DOI:10.1063/1674-0068/29/cjcp1506122
分类号: