Metal-induced photoluminescence quenching in thin organic films originating from noncontact energy transfer between single molecule and atom

被引：8
|
作者：
Wu, Y.
Wu, H. R.
Wang, M. L.
Lu, M.
Song, Q. L.
Ding, X. M.
Hou, X. Y. [1 ]
机构：
[1] Fudan Univ, Adv Mat Lab, Shanghai 200433, Peoples R China
[2] Fudan Univ, Surface Phys Lab Natl Key Lab, Shanghai 200433, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 15期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2721840
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Severe quenching of photoluminescence in dye-doped organic thin films is observed after submonolayer metal (metal atoms) deposition. Insertion of a spacer layer between the organic film and metal atoms has minor effect on eliminating the quenching, indicating that it is a long-range noncontact interaction. The phenomenon is regarded as a result of Forster energy transfer between organic molecules and metal atoms. The origin of the transfer is the coupling between dipoles in excited organic molecules and electron transitions in isolated atoms. Atoms among most elements rather than metals are capable of being involved in such a noncontact energy transfer process. (c) 2007 American Institute of Physics.
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