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Perylene-Fused,Aggregation-Free Polycyclic Aromatic Hydrocarbons for Solution-Processed Distributed Feedback Lasers |
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| Authors: | Ya Zou Víctor Bonal Sergio Moles Quintero Dr. Pedro G. Boj Dr. José M. Villalvilla Dr. José A. Quintana Dr. Guangwu Li Shaofei Wu Dr. Qing Jiang Dr. Yong Ni Prof. Juan Casado Prof. María A. Díaz-García Prof. Jishan Wu |
| Affiliation: | 1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore, Singapore These authors contributed equally to this work.;2. Departamento Física Aplicada, and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, 03080 Alicante, Spain These authors contributed equally to this work.;3. Department of Physical Chemistry, University of Malaga, Campus de Teations s/n, 229071 Malaga, Spain These authors contributed equally to this work.;4. Departamento Óptica, Farmacología y Anatomía, and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, 03080 Alicante, Spain;5. Departamento Física Aplicada, and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, 03080 Alicante, Spain;6. Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore, Singapore;7. Department of Physical Chemistry, University of Malaga, Campus de Teations s/n, 229071 Malaga, Spain |
| Abstract: | Perylene-fused, aggregation-free polycyclic aromatic hydrocarbons with partial zigzag periphery ( ZY-01 , ZY-02 , and ZY-03 ) were synthesized. X-ray crystallographic analysis reveals that there is no intermolecular π–π stacking in any of the three molecules, and as a result, they show moderate-to-high photoluminescence quantum yield in both solution and in the solid state. They also display the characteristic absorption and emission spectra of perylene dyes. ZY-01 and ZY-02 with a nearly planar π-conjugated skeleton exhibit amplified spontaneous emission (ASE) when dispersed in polystyrene thin films. Solution-processed distributed feedback lasers have been fabricated using ZY-01 and ZY-02 as active gain materials, both showing narrow emission linewidth (<0.4 nm) at wavelengths around 515 and 570 nm, respectively. In contrast, ZY-03 did not show ASE and lasing, presumably due to its highly twisted backbone, which facilitates nonradiative internal conversion and intersystem crossing. |
| Keywords: | amplified spontaneous emission dyes organic lasers perylene polycyclic aromatic hydrocarbons |
