Studies of the electronic energy migration and trapping in styrene copolymers

1985 ◽  
Vol 18 (12) ◽  
pp. 2714-2719 ◽  
Author(s):  
K. Sienicki ◽  
C. Bojarski
Keyword(s):  
Electronic Energy ◽  
Energy Migration ◽  
Styrene Copolymers

On the analyses of fluorescence depolarisation data in the presence of electronic energy migration. Part II: Applying and evaluating two-photon excited fluorescence

2012 ◽  
Vol 14 (6) ◽  
pp. 1917
Author(s):  
Oleg Opanasyuk ◽  
Therese Mikaelsson ◽  
Linus Ryderfors ◽  
Emad Mukhtar ◽  
Lennart B.-Å. Johansson
Keyword(s):  
Electronic Energy ◽  
Energy Migration ◽  
Two Photon

Two-photon excited fluorescence depolarisation and electronic energy migration within donor–donor pairs

2009 ◽  
Vol 11 (33) ◽  
pp. 7152 ◽  
Author(s):  
Oleg Opanasyuk ◽  
Linus Ryderfors ◽  
Emad Mukhtar ◽  
Lennart B.-Å. Johansson
Keyword(s):  
Electronic Energy ◽  
Energy Migration ◽  
Two Photon

Electronic Energy Migration (or Hopping)

2016 ◽  
Author(s):  
Silvia E. Braslavsky ◽  
André M. Braun ◽  
Alberto E. Cassano ◽  
Alexei V. Emeline ◽  
Marta I. Litter ◽  
...  
Keyword(s):  
Electronic Energy ◽  
Energy Migration

Energy migration in the aromatic vinyl polymers. 5. Poly(2-vinyl naphthalene) and polystyrene

1985 ◽  
Vol 63 (6) ◽  
pp. 1328-1332 ◽  
Author(s):  
Steven N. Semerak ◽  
Curtis W. Frank
Keyword(s):  
Nearest Neighbor ◽  
Transport Model ◽  
Homogeneous System ◽  
Electronic Energy ◽  
Energy Migration ◽  
Periodic Lattice ◽  
Single Chain ◽  
Vinyl Polymers ◽  
Chain Fraction ◽  
Ring Pair

Electronic energy migration in pure poly(2-vinyl naphthalene) (P2VN) is analyzed in terms of a theory for three-dimensional transport and trapping in a homogeneous system of randomly distributed chromophores. A simpler theory for 3-D transport on a spatially periodic lattice, which was applied previously to polystyrene (PS) gave self-contradictory results for P2VN because of higher transport rates in P2VN. The fraction of rings in excimer-forming sites (EFS) in pure P2VN, analyzed by the former theory, is found to be 0.072 – moderately larger than the single-chain fraction of 0.026. In contrast, the EFS ring fraction in pure PS was 0.33, much larger than the single-chain fraction of 0.051. This reflects the reduced probability, relative to a phenyl ring pair, of packing a naphthyl ring pair into the necessary sandwich arrangement in the pure polymers. Energy migration in very dilute, miscible blends containing P2VN is analyzed by a one-dimensional transport model, which was applied previously to similar blends containing PS. The nearest-neighbor migration rates obtained from the data for both P2VN and PS are about one hundred times higher than the expected dipole–dipole rates. This suggests that (1) migration is not limited to nearest-neighbor rings, (2) the morphology of the dilute blends does not consist of isolated chains of the aromatic vinyl polymers, or (3) short-range electronic interactions other than dipole–dipole are involved in energy migration.

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