Investigation on solvent casting films of surfactant-encapsulated clusters |
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Authors: | Bu Weifeng Wu Lixin Hou Xueliang Fan Hailin Hu Changwen Zhang Xi |
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Institution: | Key Laboratory for Supramolecular Structure and Spectroscopy of Ministry of Education, Jilin University, Changchun, 130023, People's Republic of China. |
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Abstract: | The surfactant-encapsulated cluster (SEC) composed of a hydrophobic dimethyl dioctadecyl ammonium (DODA) shell and an encapsulated hydrophilic polyoxoanion core can form casting films. The structure of the casting film is influenced by evaporation rates of organic solvent. When the casting films are prepared by slow evaporation of chloroform, the alkyl chains are considered to possess a partial interdigitation, and the interdigitated length is 1.6 nm. The casting film structure is characterized by scanning force microscopy (SFM), Fourier transformation infrared (FT-IR), wide-angle X-ray diffraction, and differential scanning calorimetry (DSC). |
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