With the help of Self assemble approach,the molecular deposition films was formed by alternative deposition of WO 3 and bis quarternary ammonium salt.Characterization,using UV visible absorption spectra and LAXD,shows that the molecular deposition films have excellent ultrathin and ordered layer structure.
A novel high- efficient photochromic self- assembly multilayered film has been fabricated 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.
A novel Microporous decatungstate was synthesized by using cationic l,10-diaminode-cane as template under mile chemical donditions,This material was construdted from hoghly ordered hexahonal array of 1,10-diaminodecane and decatungstate polyanions.HR-TEM image ahowded that the decatungstate polyanions"packed"around the l,10-diaminodecane moledules.XRD pattern confirmed its hexagonal array(a=b=1.718nm,cunaknown).Atdlplate mechanosm was pro-posed to explain its formation prodess.It is evidenced that l,10-diaminodecane molecules play a crucial role in templating the inorganic framework.the cationic diaminodecane molecules "bond"decatungstate polyanions on esch end via supermolecular interation and thus form bolarform struc-ture units.These units pack together and ahexagonal phasa is constructed.
