Ultrafast Solid-State Electron Transfer in Donor-Acceptor Conducting Polymers.

McBranch, D. W. ; Klimov, V. I. ; Kraabel, B. A. ; Maniloff, E. S. ; Xu, S.

Technical Information Center Oak Ridge Tennessee

关键词: Polymers;    Electron transfer;    Surface chemistry;    Image processing;    Optical switching;   

RP-ID  :  DE2001768861

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The objective of this project was to systematically study the nature of photoexcitations and the physics of electron transfer in donor-acceptor conducting polymer materials. Specifically we were interested in gaining a better understanding of the various steps involved in the charge transfer: the excitation events, the charge transfer itself, and the stabilization mechanism. Our studies provide an explanation for experimental observations that charge transfer is linear in pump intensity in donor-acceptor blends and is a quadratic process in films of pristine polymers. We demonstrated that charge transfer in polymeric systems can be used for generation of transient gratings applicable, for example, in ultrafast image processing, optical switching, and beam steering.