Large Third-Order Optical Nonlinearity of a Novel Copper Phthalocyanine--Ferrocene Dyad

¹The Key Lab of Organic Photoelectrons and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084 ²Department of Chemical and Material Engineering, Jilin Institute of Chemical Technology, Jilin 132022 ³Department of Application Technology, Northeast Dianli University, Jilin 132012

Received Date: March 11, 2008

Published Date: August 31, 2008

Abstract

Third-order optical nonlinearity of a novel copper phthalocyanine--ferrocene dyad is measured by femtosecond forward degenerate four-wave mixing (DFWM) technique at 800nm. The second-order hyperpolarizability of the novel copper phthalocyanine--ferrocene dyad is measured to be 1.74×10^-30 esu. This large and ultrafast third-order optical nonlinear response is mainly enhanced by the formation of intramolecular charge-transfer which can enhance the delocalized movements of the large π-electrons in the molecules.

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