FABRICATION AND CHARACTERIZATION OF SPIN SELF-ASSEMBLED PPV/MONTMORILLONITE MULTILAYER THIN FILMS

2004 ◽  
Vol 13 (03n04) ◽  
pp. 581-586
Author(s):  
TAE-HO KIM ◽  
O OK PARK
Keyword(s):  
Thin Films ◽  
Self Assembly ◽  
Environmental Stability ◽  
Phenylene Vinylene ◽  
Multilayer Thin Films ◽  
Layer By Layer ◽  
Assembly Method ◽  
Fabrication And Characterization ◽  
Self Assembled

Multilayer nanostructural thin films through a layer-by-layer spin self-assembly method were prepared using poly(p-phenylene vinylene)/montmorillonite. Sodium montmorillonite particles exfoliated into single sheets and cationic PPV precursor and such anionic MMT plates were spin self-assembled by electrostatic attraction. Self-assembled MMT layers blocked the penetration of oxygen and moisture and they reduced the photo-oxidation of the emitting material. Spin self-assembled films showed higher environmental stability and luminescence, and their PL spectra were somewhat different from that of bulk PPV films.

Fabrication and Characterization of LuminescentMultilayer Films Based on Polyoxometalates and Fuchsin Basic

2011 ◽  
Vol 66 (1) ◽  
pp. 43-48
Author(s):  
Changyun Chen ◽  
Jun Peng ◽  
Yan Shen ◽  
Dan Chen ◽  
Huanqiu Zhang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Multilayer Film ◽  
Photoelectron Spectra ◽  
Layer By Layer ◽  
X Ray ◽  
Force Microscopy ◽  
Assembly Method ◽  
Atomic Force ◽  
Fabrication And Characterization

A luminescent multilayer film has been fabricated from the polyoxometalate anion α- [PMo12O40]3− (α-PMo12) and the cation Fuchsin Basic (FB) through an electrostatic layer-by-layer (LbL) self-assembly method and characterized by UV/Vis spectra, atomic force microscopy and X-ray photoelectron spectra. The fluorescence properties of the LbL film have also been investigated. Cyclic voltammetry measurements have demonstrated that the electrochemical properties of the polyoxometalate and FB are maintained in the multilayer film, which exhibits electrocatalytic activity for the reduction of bromate

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