White‐Light Emission from Dual‐Way Photon Energy Conversion in a Dye‐Encapsulated Metal–Organic Framework. (25th June 2019)

• Record Type: Journal Article
• Authors: Wang, Zheng; Zhu, Cheng‐Yi; Mo, Jun‐Ting; Fu, Peng‐Yan; Zhao, Yan‐Wu; Yin, Shao‐Yun; Jiang, Ji‐Jun; Pan, Mei; Su, Cheng‐Yong
• Is Part Of: Angewandte Chemie. Volume 131:Number 29(2019)
• Page Start: 9854
• Page End: 9859
• Publication Date: 2019-06-25
• Subjects: Farbstoffe/Pigmente -- Metall-organische Gerüste -- Photonenkonversion -- Weißlichtemission -- Wirt-Gast-Systeme; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201905186
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: The design of white‐light phosphors is attractive in solid‐state lighting (SSL) and related fields. A new strategy in obtaining white light emission (WLE) from dual‐way photon energy conversion in a series of dye@MOF (LIFM‐WZ‐6 ) systems is presented. Besides the traditional UV‐excited one‐photon absorption (OPA) pathway, white‐light modulation can also be gained from the combination of NIR‐excited green and red emissions of MOF backbone and encapsulated dyes via two‐photon absorption (TPA) pathway. As a result, down‐conversion OPA white light was obtained for RhB + @LIFM‐WZ‐6 (0.1 wt %), BR‐2 + @LIFM‐WZ‐6 (2 wt %), and APFG + @LIFM‐WZ‐6 (0.1 wt %) samples under 365 nm excitation. RhB + @LIFM‐WZ‐6 (0.05 wt %), BR‐2 + @LIFM‐WZ‐6 (1 wt %) and APFG + @LIFM‐WZ‐6 (0.05 wt %) exhibit up‐conversion TPA white light under the excitation of 800, 790, and 730 nm, respectively. This new WLE generation strategy combines different photon energy conversion mechanisms together. Abstract : Weiß auf zweierlei Weise : Weißlichtemission (WLE) wurde in Farbstoff@MOFs erhalten. Zusätzlich zum traditionellen UV‐angeregten Ein‐Photonen‐Absorptions(OPA)‐Weg kann eine Modulation auch aus der Kombination NIR‐angeregter grüner und roter Emissionen des MOF‐Rückgrats und verkapselter Farbstoffe über einen Zwei‐Photonen‐Absorptions(TPA)‐Weg erzielt werden. MOF: Metall‐organisches Gerüst.