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Article Abstract
Bismuth-halide-based inorganic-organic hybrid materials (Bi-IOHMs) are desirable in luminescence-related applications due to their advantages such as low toxicity and chemical stability. Herein, two Bi-IOHMs of [Bpy][BiCl(Phen)] (, Bpy = -butylpyridinium, Phen = 1,10-phenanthroline) and [PP14][BiCl(Phen)]·0.25HO (, PP14 = -butyl--methylpiperidinium), containing different ionic liquid cations and same anionic units, have been synthesized and characterized. Single-crystal X-ray diffraction reveals that compounds and crystallize in the monoclinic space group of 2/ and 2, respectively. They both possess zero-dimensional ionic structures and exhibit phosphorescence at room temperature upon excitation of UV light (375 nm for , 390 nm for ), with microsecond lifetime (24.13 μs for and 95.37 μs for ). Hirshfeld surface analysis has been utilized to visually exhibit the different packing motifs and intermolecular interactions in and . The variation in ionic liquids makes compound have a more rigid supramolecular structure than , resulting in a significant enhancement in photoluminescence quantum yield (PLQY), that is, 0.68% for and 33.24% for . In addition, the ratio of the emission intensities for compounds and shows a correlation with temperature. This work provides new insight into luminescence enhancement and temperature sensing applications involving Bi-IOHMs.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10005380 | PMC |
| http://dx.doi.org/10.3390/molecules28052380 | DOI Listing |
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