Strategic modification of ligands for remarkable piezochromic luminescence (PCL) based on a neutral Ir(iii) phosphor

Li, Dan; Li, Guangfu; Xie, Jiaxin; Zhu, Dongxia; Su, Zhongmin; Bryce, Martin R.

Abstract

A new aggregation-induced emission (AIE)-active neutral Ir(III) complex has been rationally designed and synthesized by introducing carboxyl and F substituents into the ancillary and cyclometalating ligands, respectively, to construct different kinds of intermolecular interaction, leading to excellent piezochromic luminescence (PCL) properties. The emission colours are tunable by a grinding–fuming/heating process with good reversibility in the solid state. A combination of powder X-ray diffraction, differential scanning calorimetry, 1H NMR, X-ray photoelectron and Fourier-transform infrared spectroscopy unambiguously confirm that the mechanism of PCL involves disruption of the intermolecular π–π interactions and hydrogen bonding. The combined AIE and PCL properties have enabled an efficient re-writable data recording device to be fabricated using the Ir(III) complex as the active material.

Citation

Li, D., Li, G., Xie, J., Zhu, D., Su, Z., & Bryce, M. R. (2019). Strategic modification of ligands for remarkable piezochromic luminescence (PCL) based on a neutral Ir(iii) phosphor. Journal of Materials Chemistry C Materials for optical and electronic devices, 7(35), 10876-10880. https://doi.org/10.1039/c9tc03646f

• Journal Article Type: Article
• Acceptance Date: Aug 19, 2019
• Online Publication Date: Aug 29, 2019
• Publication Date: Sep 21, 2019
• Deposit Date: Oct 10, 2019
• Publicly Available Date: Aug 19, 2020
• Journal: Journal of Materials Chemistry C Materials for optical and electronic devices
• Print ISSN: 2050-7526
• Electronic ISSN: 2050-7534
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 7
• Issue: 35
• Pages: 10876-10880
• DOI: https://doi.org/10.1039/c9tc03646f
• Public URL: https://durham-repository.worktribe.com/output/1288779