| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9582296 | Chemical Physics Letters | 2005 | 5 Pages |
Abstract
We have investigated the optical properties of a Ï-conjugated poly(arylene-ethynylene) co-polymer, the poly-{[(2,5-dioctyloxy)-1,4-phenylene acetylene]-co-2,6-pyridylene acetylene}, in liquid solutions and blended films with nonconjugated polymers. The red-shifted emission from excimers strongly influences the photoluminescence of solid-state samples but it can be suppressed by using in-vacuum thermal ageing or photoirradiation. Experimental observations suggest this quenching is due to structural reorganization processes that still occur in blends within phase-separated regions of pure co-polymer. Significantly, the suppression of the excimer band does not affect the exciton blue emission in blends, which could help improve color purity for OLEDs and display applications.
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Authors
R. Pizzoferrato, T. Ziller, A. Micozzi, A. Ricci, C. Lo Sterzo, A. Ustione, C. Oliva, A. Cricenti,