X-ray scintillation and photoluminescence of isomorphic ionic bismuth halides with [Amim]+ or [Ammim]+ cations. Issue 20 (25th August 2021)

• Record Type: Journal Article
• Authors: Jin, Jian-Ce; Lin, Yang-Peng; Chen, Da-Yi; Lin, Bing-Ye; Zhuang, Ting-Hui; Ma, Wen; Gong, Liao-Kuo; Du, Ke-Zhao; Jiang, Jiang; Huang, Xiao-Ying
• Is Part Of: Inorganic chemistry frontiers. Volume 8:Issue 20(2021)
• Page Start: 4474
• Page End: 4481
• Publication Date: 2021-08-25
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1qi00803j
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : X-ray scintillation and cyan phosphorescence are observed for three isomorphic ionic bismuth halides. Abstract : Three isomorphic ionic bismuth(iii ) halides were synthesized, utilizing 2, 2′-bipyridyl-1, 1′-dioxide (bp2do) as the organic ligand decorated on the halobismuthate(iii ) moieties, namely, [Ammim][BiBr4 (bp2do)] (1, Ammim = 1-allyl-2, 3-dimethylimidazolium), [Ammim][BiCl4 (bp2do)] (2 ) and [Amim][BiCl4 (bp2do)] (3, Amim = 1-allyl-3-methylimidazolium). They all crystallize in the space group of Pca 21 with a similar supramolecular packing mode. However, the average adjacent Bi–Bi distances are slightly different, that is 1 > 2 > 3 . Moreover, they possess different phosphorescence quantum yields (QYs) with 0.38% for 1, 27.83% for 2 and 34.76% for 3 . Note that the QY of 3 remains the highest for bp2do-based halobismuthate hybrids. Their phosphorescence originates from the organic ligand bp2do, in which an inorganic-to-organic charge transfer (IOCT) process exists, as confirmed by density functional theory (DFT) calculations. The three compounds possess X-ray scintillation properties. Eventually, a WLED could be fabricated by mixing commercial nitride red phosphor with cyan-emitting 3 . This study provides a method for the synthesis of organic ligand based ionic bismuth halide hybrids with higher QYs, and enriches X-ray scintillation materials.