UV-Vis and STM Studies of LB Films of Octa-Tetrahydrofuryloxy Nd-Bisphthalocyanine

Chinese Journal of Applied Chemistry ›› 1997, Vol. 0 ›› Issue (1): 21-24.

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UV-Vis and STM Studies of LB Films of Octa-Tetrahydrofuryloxy Nd-Bisphthalocyanine

Wang Yan, Li Wei, Li Jing, Chen Wenqi, Xi Shiquan

Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Received:1996-05-21 Revised:1996-07-23 Published:1997-02-10 Online:1997-02-10

Abstract

Abstract: Surface pressure/monomolecular area(π-A)isotherm of octa-tetrahydrofuryloxy Nd-bisphthalocyanine monolayer on the water subphase has been investigated. LB films have been prepared and characterized using UV-Vis absorption spectroscopy. LB films on highly oriented pyrolytic graphite(HOPG)were investigated using STM. It can be seen from the micrograph that Nd-bisphthalocyanine molecules distributed randomly in multimers on HOPG, but uniformly and dispersively in an ordered form when a layer of stearic acid has been deposited on HOPGbefore LBpreparation. All results showed that Nd-bisphthalo-cyanine macrocycles oriented perpendicular to the substrate.

Key words: Nd-bisphthalocyanine, LB film, UV-Vis absorption spectroscopy, scanning tunneling microscope

Wang Yan, Li Wei, Li Jing, Chen Wenqi, Xi Shiquan. UV-Vis and STM Studies of LB Films of Octa-Tetrahydrofuryloxy Nd-Bisphthalocyanine[J]. Chinese Journal of Applied Chemistry, 1997, 0(1): 21-24.

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UV-Vis and STM Studies of LB Films of Octa-Tetrahydrofuryloxy Nd-Bisphthalocyanine

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