✦ LIBER ✦
Controlled Fluorescence Bursts from Conjugated Polymers Induced by Triplet Quenching
✍ Scribed by F. Schindler; J. M. Lupton; J. Feldmann; U. Scherf
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 127 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0935-9648
No coin nor oath required. For personal study only.
✦ Synopsis
Dramatic fluorescence bursts (see Figure and cover) from conjugated polymers are observed upon exposure to air. The burst occurs prior to photo‐oxidation and is imaged in single molecules of a ladder‐type polymer, but is also found in bulk films. Triplet shelving is identified as an important mechanism limiting the fluorescence yield of conjugated polymers due to both a reduction in photon cycling rates and singlet–triplet quenching in the multichromophoric system.