Highly Luminescent Copper Iodide Cluster Based Inks with Photoluminescence Quantum Efficiency Exceeding 98

Jing-Jing Wang; Chen Chen; Wei-Guo Chen; Ji-Song Yao; Jun-Nan Yang; Kun-Hua Wang; Yi-Chen Yin; Ming-Ming Yao; Li-Zhe Feng; Cheng Ma; Feng-Jia Fan; Hong-Bin Yao

doi:10.1021/jacs.9b12908

Highly Luminescent Copper Iodide Cluster Based Inks with Photoluminescence Quantum Efficiency Exceeding 98

J Am Chem Soc. 2020 Feb 26;142(8):3686-3690. doi: 10.1021/jacs.9b12908. Epub 2020 Feb 14.

Authors

Jing-Jing Wang^{1

2}, Chen Chen^{1

2}, Wei-Guo Chen^{3

4}, Ji-Song Yao^{1

2}, Jun-Nan Yang^{1

2}, Kun-Hua Wang^{1

2}, Yi-Chen Yin^{1

2}, Ming-Ming Yao^{1

2}, Li-Zhe Feng^{1

2}, Cheng Ma^{1

5}, Feng-Jia Fan^{3

4

6}, Hong-Bin Yao^{1

2}

Affiliations

¹ Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale , University of Science and Technology of China , Hefei , Anhui 230026 , China.
² Department of Applied Chemistry, Hefei Science Center of Chinese Academy of Sciences , University of Science and Technology of China , Hefei , Anhui 230026 , China.
³ Department of Physics, Hefei Science Center of Chinese Academy of Sciences , University of Science and Technology of China , Hefei , Anhui 230026 , China.
⁴ CAS Key Laboratory of Microscale Magnetic Resonance , University of Science and Technology of China , Hefei , Anhui 230026 , China.
⁵ Department of Materials Science and Engineering , University of Science and Technology of China , Hefei , Anhui 230026 , China.
⁶ Synergetic Innovation Center of Quantum Information and Quantum Physics , University of Science and Technology of China , Hefei , Anhui 230026 , China.

PMID: 32045234
DOI: 10.1021/jacs.9b12908

Abstract

Highly luminescent inks are desirable for various applications such as decorative coating, art painting, and anticounterfeiting, to name a few. However, present inks display low photoluminescent efficiency requiring a strong excitation light to make them glow. Here, we report a highly luminescent ink based on the copper-iodide/1-Propyl-1,4-diazabicyclo[2.2.2]octan-1-ium (Cu₄I₆(pr-ted)₂) hybrid cluster with a quantum efficiency exceeding 98%. Under the interaction between the Cu₄I₆(pr-ted)₂ hybrid cluster and polyvinylpyrrolidone (PVP), the highly luminescent Cu₄I₆(pr-ted)₂/PVP ink can be facilely prepared via the one-pot solution synthesis. The obtained ink exhibits strong green light emission that originates from the efficient phosphorescence of Cu₄I₆(pr-ted)₂ nanocrystals. Attractively, the ink displays high conversion efficiency for the ultraviolet light to bright green light emission due to its wide Stokes shift, implying great potential for anticounterfeiting and luminescent solar concentrator coating.