Efficient photoluminescence and electroluminescence from a soluble polyfluorene

Journal of the American Chemical Society

Volumn 118, Issue 31, 1996, Pages 7416-7417

  Pei, Qibing ^a   Yang, Yang ^a  

^a DUPONT COMPANY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

POLYMER;

ARTICLE; CHEMOLUMINESCENCE; PHOTOCHEMISTRY;

EID: 0029765128     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja9615233     Document Type: Article

References (19)

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14. The 367 nm line of a mercury lamp is used as the excitation source. The luminescence is collected with an integrating sphere. Coumarin 102 in a dilute solution in ethanol with a reported PL yield of 93% (Fletcher, A. N.; Bliss, D. E., Appl. Phys. 1978, 16, 289) is used as the standard. This solution was purged with argon prior to measurement. The measurement of the photoluminescent yield of the dilute solution and the thin film of BDOH-PF was carried out in air.
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16. Interchain excimer formation has already been observed in other conjugated polymers with fused aromatic ring units (Jenekhe, S. A.; Osaheni, J. A. Science 1994, 265, 765). As added proof, in alkyl-PFs we have found that the PL color of the thin films is dependent on the size of the side groups: 9-hexyl-PF, pure green; 9,9-dihexyl-PF, blue-green; 9-hexyl-9-(2-ethylhexyl)-PF, sky blue (with green component); 9-(2-ethylhexyl)-9-(3,6,9-trioxadecyl)-PF, pure blue. All these polymers in solutions emit the same blue color.
17. (a) Staring, E. G. J.; Demandt, R. C. J. E.; Braun, D.; Rikken, L. J.; Kessener, Y.A. R. R.; Venhuizen, T. H. J.; Wynberg, H.; von Hoeve, W.; Spoelstra, K. J. Adv. Mater. 1994, 6, 934.
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