Details

Autor(en) / Beteiligte

• Bian, Lifang
• Ma, Huili
• Ye, Wenpeng
• Lv, Anqi
• Wang, He
• Jia, Wenyong
• Gu, Long
• Shi, Huifang
• An, Zhongfu
• Huang, Wei

Titel

Color-tunable ultralong organic phosphorescence materials for visual UV-light detection

Ist Teil von

• Science China. Chemistry, 2020-10, Vol.63 (10), p.1443-1448

Ort / Verlag

Beijing: Science China Press

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Ultralong organic phosphorescence (UOP) materials have roused considerable attention in the field of photonics and optoelectronics owing to the feature of long-lived emission lifetimes. However, to develop UOP materials with color-tunability is still a formidable challenge. Here, we report a class of UOP materials containing carbonyl, amino or amide groups, exhibiting colortunable persistent luminescence ranging from blue (458 nm) to yellow-green (508 nm) under different UV wavelength excitation. Taken theoretical and experimental results together, we conclude that the excitation dependent color-tunable UOP emission is ascribed to multiple emission centers from single molecular and aggregated states in crystal. Given color-tunable UOP feature, these materials are used to successfully realize visual UV-light detection. This finding not only provides a strategy to design new organic phosphorescent molecules with colorful emission, but also extends the scope of the applications of purely organic phosphorescent materials.