Triggering White-Light Emission in a 2D Imine Covalent Organic Framework Through Lanthanide Augmentation

• DOI: 10.1021/acsami.9b07779
• Publication Date: 2019-07-05T19:12:50Z
• Authors: Chidharth Krishnaraj; Anna M. Kaczmarek; Himanshu Sekhar Jena; Karen Leus; Nicolas Chaoui; Johannes Schmidt; Rik Van Deun; Pascal Van Der Voort
• Keywords: Covalent organic framework; Imine; Green-light; Hybrid material

Recently, covalent organic frameworks (COFs) have emerged as an interesting class of porous materials, featuring tunable porosity and fluorescence properties based on reticular construction principles. Some COFs display highly emissive monocolored luminescence, but attaining white-light emission from is difficult it must account for a wide wavelength range. White-light desired solid-state lighting applications, obtaining usually demands the combination red-, green-, blue-light components. Hence, to achieve targeted emission, we report first time grafting lanthanides (Eu3+/Tb3+) two-dimensional imine COF (TTA-DFP-COF). We studied luminescence hybrid materials prepared by anchoring Eu3+ (red light) Tb3+ (green β-diketonate complexes onto TTA-DFP-COF. Reticular exploited design strong coordination ions into nitrogen-rich pockets COF. Mixed Eu3+/Tb3+ are then incorporate red green components along with inherent blue light moieties produce emission. show that potential hosting complexes, which can be tuned obtain excitations applications in field optoelectronics, microscopy, optical sensing, bioassay.