1. Highly Efficient and Thermally Durable Luminescence of 1D Eu3+ Coordination Polymers with Arsenic Bridging Ligands.
- Author
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Shimoji, Haruki, Aoyama, Yuto, Inage, Kota, Nakamura, Masashi, Yanagihara, Takumi, Yuhara, Kazuhiro, Kitagawa, Yuichi, Hasegawa, Yasuchika, Ito, Shunichiro, Tanaka, Kazuo, Imoto, Hiroaki, and Naka, Kensuke
- Subjects
COORDINATION polymers ,BRIDGING ligands ,ELECTRIC dipole transitions ,LUMINESCENCE ,ARSENIC - Abstract
In this work, bisarsine oxides were evaluated as novel bridging ligands, aiming to develop practical and efficient luminescent lanthanide coordination polymers. We have synthesized one‐dimensional (1D) Eu3+ coordination polymers that incorporate bisarsine oxide bridging ligands and hexafluoroacetylacetonate anions. These polymers exhibited a denser packing of chains compared to analogous polymers bridged with bisphosphine oxides. The coordination polymers demonstrated exceptional thermal stability and substantial emission quantum yields. Additionally, the bisarsine oxides induced a pronounced polarization effect, facilitating a sensitive electric dipole transition that yields considerably narrow band red emission. Remarkably, the Eu3+ coordination polymers with bisarsine oxides maintained intense emission even at 550 K. A distinctive feature of these polymers is their heating‐induced emission enhancement observed when the temperature was increased from 300 K to 400 K. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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