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Open AccessArticle

Highly Efficient Aggregation-Induced Room-Temperature Phosphorescence with Extremely Large Stokes Shift Emitted from Trinuclear Gold(I) Complex Crystals

Department of Applied Chemistry, Ritsumeikan University, 1–1–1 Nojihigashi, Kusatsu 525-8577, Japan
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Academic Editor: F. Christopher Pigge
Molecules 2019, 24(24), 4606; https://doi.org/10.3390/molecules24244606
Received: 25 November 2019 / Revised: 10 December 2019 / Accepted: 12 December 2019 / Published: 16 December 2019
(This article belongs to the Special Issue Aggregation-Induced Emission: Materials and Applications)
Highly efficient (≈75% quantum yield), aggregation-induced phosphorescence is reported. The phosphorescence is emitted at room temperature and in the presence of air from crystals of trinuclear Au(I) complexes, accompanied by an extremely large Stokes shift of 2.2 × 104 cm−1 (450 nm). The mechanism of the aggregation-induced room-temperature phosphorescence from the Au complex crystals was investigated in terms of the crystal packing structure and the primary structure of the molecules. It was found that two kinds of intermolecular interactions occurred in the crystals, and that these multiple dual-mode intermolecular interactions in the crystals play a crucial role in the in-air room-temperature phosphorescence of the trinuclear Au(I) complexes. View Full-Text
Keywords: Au complex; aggregation-induced emission; phosphorescence; Stokes shift Au complex; aggregation-induced emission; phosphorescence; Stokes shift
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Tsutsumi, O.; Tamaru, M.; Nakasato, H.; Shimai, S.; Panthai, S.; Kuroda, Y.; Yamaguchi, K.; Fujisawa, K.; Hisano, K. Highly Efficient Aggregation-Induced Room-Temperature Phosphorescence with Extremely Large Stokes Shift Emitted from Trinuclear Gold(I) Complex Crystals. Molecules 2019, 24, 4606.

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