Spectroscopy: NMR, Fluorescence, FT-IR - download pdf or read online

By Ernst D. von Meerwall (auth.)

ISBN-10: 0387125914

ISBN-13: 9780387125916

ISBN-10: 3540125914

ISBN-13: 9783540125914

ISBN-10: 3540386556

ISBN-13: 9783540386551

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Phys. 36, 2995 (1962) 52. King, T. , McAdam, J. D. G. : Polymer 14, 293 (1973) 53. , Tomich, D. , Fetters, L. , Hadjichrisfidis, N. : Macromoleeules (in press) 54. Callaghan, P. , Pinder, D. : Polymer Bull. 5, 305 0981) 55. , Johnsen, R. M. : J. Polym. , Polym. Phys. Ed. 20, 177t (1982) 56. : Ber. Bunscnges, Phys. Chem. 73, 368 (1969) 57. Woessner, D. : J. Phys. Chem. 67, 1365 (1963) 58. : Kolloid-Z. 247, 801 (1971) 59. Williams, M. , Landel, R. , Ferry, J. : J. Amer. Chem. Soc. 77, 3701 (1955) 60.

1 Theoretical Approaches . . . . . . . . . . . . . . . N. Semerak and C. W. 3 Fluorescence Considerations . . . . . . . . . . . . . 3 Excimer Structure in Constrained Systems . . . . . . . . . . . 1 Crystals of Aromatic Hydrocarbons . . . . . . . . . . 2 Monochromophoric Compounds in Glassy Matrices . . . 3 Phane Compounds . . . . . . . . . . . . . . . . . . 4 Photodimers . . . .

They found that degassed and air-saturated films gave the same value of xM for pyrene, to within 5 ~. Moreover, zu was independent of the polymer host. 1 Introduction Phosphorescence and delayed monomer and excimer fluorescence have been observed in P1VN 50-54) and P2VN 5s-ss) in dilute glassy solution and in neat films at 77 K. The basic mechanism for the delayed fluorescence for P1VN and P2VN is considered to be triplet formation 3M* through monomer (kTM) or excimer (kxo) intersystem crossing, followed by migrative annihilation of two triplets to form one excited singlet (kMTT)- Competing with triplet-triplet annihilation is the normal process of triplet decay (kit), comprised of intersystem crossing to ground (ktT) and phosphorescence (kpr).

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Spectroscopy: NMR, Fluorescence, FT-IR by Ernst D. von Meerwall (auth.)


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