Migration in polystyrene

Gelles R, Frank CW (1982) Energy migration in the aromatic vinyl-polymers. 3. -3-dimensional migration in polystyrene polyvinyl methyl-ether). Macromolecules 15 (3) 747-752. doi 10.1021/ma00231a013... 

P.O.64 shows good migration resistance in plasticized PVC and exhibits medium tinctorial strength. The pigment is also used in polystyrene and similar polymers and is also recommended as a colorant for rubber. 

Evidence for Energy Migration in Poiy(2-vinylnaphthalene) and Polystyrene... 

Some simple fluorescence decay laws are given which result from models concerned with relaxation phenomena, heterogeneity, molecular motion and excitation migration in synthetic polymers exhibiting fluorescence. Application of such laws to decays from a poly (diacetylene) in rigid crystal form to polystyrene in fluid solution, and to vinyl naphthalene co-polymers in fluid solution are considered briefly. 

Excimer formation has been studied in polystyrene and poly(a-alkylstyrenes)189 (PS), poly(vinylcarbazole),139>140 poly-(2-vinylnaphthalene), and poly-(4-vinyl-biphenyl).141 For polystyrene films, David et a/.189 showed that the fluorescence yield increased with increasing crystallinity, at both ambient temperature and 77 K. The contribution of excimer fluorescence yield increased in the sequence atactic (0.7) < atactic oriented (0.60) < isotactic amorphous (0.28) < isotactic crystallized (0.01), with normal yields relative to excimer given in parentheses. Similar results were obtained for poly(vinylcarbazole), PVCZ, although the contribution of excimer fluorescence at 77 was independent of crystallinity. The results can be interpreted in terms of electronic energy migration to low-energy defect sites from which excimer emission can occur. In PVCZ copolymers with fumaronitrile (10), diethyl fumarate (11), and diethyl maleate (12) (Scheme 6),... 

---