Jump to main content
Jump to site search

Issue 9, 2001
Previous Article Next Article

Synthesis and crystal structures of dimethylaminoethanol adducts of Ni(II) acetate and Ni(II) acetylacetonate. Precursors for the sol–gel deposition of electrochromic nickel oxide thin films

Author affiliations

Abstract

The reaction between N,N-dimethylaminoethanol (dmaeH) and nickel(II) acetylacetonate, [Ni(acac)2]3 or Ni(II) acetate tetrahydrate, [Ni(CH3CO2)2(H2O)4] yields the new complexes [Ni(acac)2(dmaeH)] (1) and [Ni(CH3CO2)2(dmaeH)2] (2). Complexes (1) and (2) are mononuclear, containing six-coordinate Ni(II) atoms in slightly distorted octahedral environments. Complex (1) contains two bidentate and chelating acetylacetonate groups with a chelating dmaeH ligand. Complex (2) contains two monodentate acetate groups in a cis configuration and two chelating dmaeH ligands. Both complexes dissolve readily in dmaeH to form stable solutions, and are good precursors for the deposition of NiO thin films by sol–gel techniques. (1) and (2) were successfully used to grow electrochromic NiO thin films on conductive glass substrates. The surface morphology of the films was characterised by scanning electron microscopy (SEM) and atom force microscopy (AFM). The thin film performances were characterised by means of optical (transmittance) and electrochemical (cyclic voltammetry) methods. Upon cycling, the NiO thin films switch from brown to transparent in a reversible way exhibiting anodic electrochromic performance.

Graphical abstract: Synthesis and crystal structures of dimethylaminoethanol adducts of Ni(ii) acetate and Ni(ii) acetylacetonate. Precursors for the sol–gel deposition of electrochromic nickel oxide thin films

Back to tab navigation

Supplementary files

Publication details

The article was received on 12 Apr 2001, accepted on 11 Jun 2001 and first published on 02 Aug 2001


Article type: Paper
DOI: 10.1039/B103288G
Citation: J. Mater. Chem., 2001,11, 2329-2334
  •   Request permissions

    Synthesis and crystal structures of dimethylaminoethanol adducts of Ni(II) acetate and Ni(II) acetylacetonate. Precursors for the sol–gel deposition of electrochromic nickel oxide thin films

    P. A. Williams, A. C. Jones, J. F. Bickley, A. Steiner, H. O. Davies, T. J. Leedham, S. A. Impey, J. Garcia, S. Allen, A. Rougier and A. Blyr, J. Mater. Chem., 2001, 11, 2329
    DOI: 10.1039/B103288G

Search articles by author

Spotlight

Advertisements