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Electrical, optical and structural properties of AgInSe 2 thin films deposited on glass substrates are studied for different substrate and post-deposition annealing temperatures. The substrate temperature is varied in the range 300-773 K. The activation energy (E A ) has been calculated for the films using the Arrhenius plot and the bandgap (E g ) has been obtained from the optical transmission spectra. The activation energy varied from 76 meV to 330 meV for E A1 in the impurity scattering region and for E A2 the value is around 700 meV in the intrinsic region. Optical absorption spectra show variation in the bandgap, varying from 1.18 to 1.42 eV as the substrate temperature varied from 300-773 K. Films deposited at higher substrate temperatures give a = 5.93 Å and c = 11.22 Å for the tetragonal phase. The mean grain size of the films is 0.2 µm for polycrystalline films.

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Several anthraquinones containing the [2-[(2-hydroxyethyl)amino]ethyl]amino, the [2-(dimethylamino)ethyl]amino, and the 2-(dimethylamino)ethoxy groups were prepared. Preparation of a lucanthone analogue, a 7-chloroquinoline derivative, and derivatives of naphthoquinones containing the [2-[(2-hydroxyethyl)amino]ethyl]amino side chain and related amino-substituted side chains was also conducted. It was found that the antineoplastic activity of anthraquinones containing the [2-[(2-hydroxyethyl)amino]ethyl]amino side chain is superior to those containing the tertiary amino side chain. However, the presence of the [2-[(2-hydroxyethyl)amino]ethyl]amino chain is an important, but not a sufficient, factor for good antineoplastic activity, as indicated by the lack of significant biological activity of other ring systems containing this side chain.