陈朝晖; 马颖; 姚建年
A novel high efficient photochromic self assembly multilayered film has been fabricat ed from WO3 and 1,10 DAD solution using molecular deposition technique.The dependence of photochromic behavior on aggregation of WO3 in the WO3 polymer/1,10 DAD self assembly film was discussed in comparison with WO3/ 4,4'-BAMBp system.The results clearly show that organic molecules determine the charge density of the substrate,then affect the assembled structure of inorganic precursor and the stablility of the photo induced charge transfer complexes,and thus manipulate the structure and the photochromic properties of the films.
The extractions of U(VI) from nitric acid medium by tri-n-butylphosphate (TBP) dissolved in non-traditional diluent, namely 1-octyl-3-methylimidazolium hexafluorophosphate ([C8mim][PF6]) and 1-butyl-3-methylimidazolium hexafluorophosphate ([C4mim][PF6]) ionic liquid (IL), were studied. The experimental results indicated that, TBP/[C8mim][PF6] demonstrated more performance for extracting uranium than TBP/[C4mim][PF6], due to the better hydrophobicity of [C8mim][PF6]. The distribution ratio for the extraction of U(VI) from nitric acid by TBP/IL was increased with gaining nitric acid concentration. Furthermore, the extraction of strontium using t-BAMBP(4-tert-butyl-2-(α-methylbenzyl) phenol) as extractant instead of crown ethers was also studied in this paper. The preliminary results showed that the better extraction efficiency values (ESr2+∼94.26%) can be achieved using [C4mim][PF6] as diluent. (authors)