Chemical Transformation of Amphiphilic Ru Complexes Containing 2,6-Pyridinedicarboxylate at the Air-Water Interface
作者:
Kezhi Wang,
Masa-Aki Haga,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 2000)
卷期:
Volume 342,
issue 1
页码: 225-230
ISSN:1058-725X
年代: 2000
DOI:10.1080/10587250008038269
出版商: Taylor & Francis Group
关键词: amphiphilic Ru complex;chemical transformation at interface;LB film
数据来源: Taylor
摘要:
A novel amphiphilic Ru complex, [Ru(L18)(pdc)], was synthesized, where L18=2,6-bis(2′-(1′-octadecylbenzimidazolyl))pyridine and pdc = 2,6-pyridinedicarboxylate. When this complex was spread on the air-water interface as a Langmuir-Blodgett (LB) monolayer, the chemical reaction at the interface with water occurred. The resulting product at the interface could be transferred on glass or indium-tin oxide (ITO) substrate as a stable LB film. The in-situ UV spectra indicates the MLCT band at 500 nm was shifted to a longer wave-length (680 nm). The v(CO) stretching of [Ru(L18)(pdc)] was changed from 1646 cm−1to 1735 cm−1. These results strongly suggest that the coordinated carboxylate groups were protonated at the air-water interface to obtain the [Ru(L18)(py(COOH)2)(OH)2].
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