کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1309512 | 975210 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Red to near-infrared electrophosphorescence from an iridium complex coordinated with 2-phenylpyridine and 8-hydroxyquinoline Red to near-infrared electrophosphorescence from an iridium complex coordinated with 2-phenylpyridine and 8-hydroxyquinoline](/preview/png/1309512.png)
An iridium complex coordinated with 2-phenylpyridine (ppy) and 8-hydroxyquinoline (q), ppy2Irq, was synthesized and its thermal stability, absorption, photoluminescence, crystal structure and electrophosphorescence were characterized. The melting point of this material reaches as high as 374 °C and does not suffer decomposition upon heating at high vacuum therefore can be well sublimated. When ppy2Irq was used as a guest emitting material in the electrophosphorescent device, the emission is 100% saturated red light starting at ∼600 nm, extending into the near-infrared region. The bathochromic shift, compared to the fluorescence and phosphorescence from Alq3, Ptq2 and Ir(ppy)3, was analyzed to originate from the triplet excited state of 8-hydroxyquinoline ligand and the crystal structure analysis excludes the origin of π–π intermolecular interactions.
Ppy2Irq was synthesized and used as a guest material in an electrophosphorescent device. The device exhibits red to near-infrared emission.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 360, Issue 11, 1 August 2007, Pages 3493–3498