Polarized absorption spectroscopy of trans-azobenzene and trans-stilbene in stretched polyethylene films
β Scribed by P. Uznanski; M. Kryszewski; E.W. Thulstrup
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 294 KB
- Volume
- 46
- Category
- Article
- ISSN
- 1386-1425
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A study of the linear dichroism and fluorescence polarization of diphenylpolyenes (CeHs -(CLi=CH)]r-Cells) wirh II = 1.2, X.4.6. 8 in stretched polyethylene films sho\vs tllat the polyencs orient in the anisotropic matris with their Iransition dipole (emission and absorption, n + IT\*) aligned with
vis linear dichroism spectra of trans-and cis-azobenzene in stretched poly(ethylene) (PE) films are reported. Trans --,cis photo-isomerization kinetics were measured at 337 nm using polarized light with the electric vector either parallel or perpendicular to the stretching direction of the matrix. T
The genera! applk=bdity of the strrtchcd fdm technique has been studied from lumincscenrr polarization data of the rehtrti home-md hetero-aromrrtic compounds (~0 benzene zrnd p) rnzinr zrnd (b) ffuorene. mrbszole and drbenzofumn. It is shot\" that corresponding molecules are oriented similarly in st