A New Langmuir-Blodgett Film Forming Azo Compound with High Second-Order Molecular Hyperpolarizability

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (4): 510.

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A New Langmuir-Blodgett Film Forming Azo Compound with High Second-Order Molecular Hyperpolarizability

GAO Li-Hua¹, HUANG Chun-Hui¹, LIHui¹, WANG Ke-Zhi¹, LI Tian-Kai², XU Jing-Mei², ZHAO Xin-Sheng³, XIA Xiao-Hua³

1. The State Key Laboratory of Rare Earth Material Chemistry and Applications, Pking University, Beijing, 100871;
2. Institute of Photographic Chemistry, Academia Sinica;
3. College of Chemistry and Moleorclar Engneering, Peking Clniversyty

Received:1994-11-09 Revised:1994-01-01 Online:1995-04-24 Published:1995-04-24

Abstract

Abstract: Anew azo compound,(E)-N-methyl-4-{2[4-(dihexadecylamino) phenyl]azo}azopyridinium iodide, was prepared, its molecular structure is shown as follows: The monolayer formed by spreading its chloroform solution on a pure water substrate (18℃, pH5.4) can be transferred onto hydrophilic quartz substrate with transfer ratio very close to unity. From second-harmonic generation experiment, the second-order molecular hyperpolarizability was evaluated to be 4.7× 10^-27esu.

Key words: Azo compound, Langmuir-Blodgett film, Second-harmonic generation

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GAO Li-Hua, HUANG Chun-Hui, LIHui, WANG Ke-Zhi, LI Tian-Kai, XU Jing-Mei, ZHAO Xin-Sheng, XIA Xiao-Hua. A New Langmuir-Blodgett Film Forming Azo Compound with High Second-Order Molecular Hyperpolarizability[J]. Chem. J. Chinese Universities, 1995, 16(4): 510.

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A New Langmuir-Blodgett Film Forming Azo Compound with High Second-Order Molecular Hyperpolarizability

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