Structural Evaluation of the Aggregate of Palladium(II)-Pyridylazophenol Complex at the Heptane-Water Interface by the Centrifugal Liquid Membrane Method

• OHASHI Akira

  College of Science, Ibaraki University

• KIMINARITA Takafusa

  Graduate School of Science and Engineering, Ibaraki University

• WATARAI Hitoshi

  Institute for NanoScience Design, Osaka University

Abstract

The formation and aggregation of the Pd(II) complex with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (HL) at the heptane-water interface was investigated by UV-vis absorption and resonance Raman spectrometry using the centrifugal liquid membrane (CLM) method. The interfacial aggregate had an absorption maximum wavelength at 488 nm, showing a hypsochromic shift from the absorption maximum wavelength at 580 nm of the complex monomer (PdLCl). The critical aggregation concentration of PdLCl was determined to be 2.6 × 10^-10 mol cm^-2. The observed UV-vis absorption and resonance Raman spectra implied that the ligand in the interfacial aggregate was mainly in the state of azo form, because the spectra were very similar to those of the PdLCl complex obtained in a low-polarity solvent such as toluene.

Journal

• Solvent Extraction Research and Development, Japan

  Solvent Extraction Research and Development, Japan 24 (2), 105-111, 2017

  Japan Association of Solvent Extraction

Keywords

• General Chemical Engineering
• General Chemistry

Details

• CRID: 1390001205741375104
• NII Article ID: 130005689384
• NII Book ID: AA11114608
• DOI: 10.15261/serdj.24.105
• ISSN: 21884765
• ISSN: 13417215
• NDL BIB ID: 028289345
• Web Site: http://id.ndl.go.jp/bib/028289345
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I028289345
• Web Site: https://www.jstage.jst.go.jp/article/serdj/24/2/24_105/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed