Investigation on solvent casting films of surfactant-encapsulated clusters.
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).
Surfactant-encapsulated polyoxometalloeuropate: polarized Eu3+ emission in the highly ordered self-organizing film.
An organic/inorganic composite, (DODA)(9)EuW(10)O(36).9H(2)O, can form a highly ordered self-organizing film with a layered structure and almost fully interdigitated alkyl chains at solid supports. EuW10O36(9-) is deduced to be oriented in its self-organizing film, resulting in its polarized emission, which offers an accessible approach to fabricating the functional thin films containing polyoxometalates.
The First Organoxenon(IV) Compound: Pentafluorophenyldifluoroxenonium(IV) Tetrafluoroborate.
Xenon(IV) - carbon bonding has been realized for the first time in the product formed from the reaction of XeF(4) with C(6)F(5)BF(2) in CH(2)Cl(2) at -55 degrees C [Eq. (1)]. [C(6)F(5)XeF(2)][BF(4)] is a strong oxidative fluorinating agent. This xenon(IV) compound fluorinates (C(6)F(5))(3)P to (C(6)F(5))(3)PF(2), C(6)F(5)I to C(6)F(5)IF(2), and I(2) to IF(5). In all cases, [C(6)F(5)Xe][BF(4)] was obtained as a by-product.