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.

doi:10.1039/c9tc03646f

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.

Authors

Dan Li

Guangfu Li

Jiaxin Xie

Dongxia Zhu

Zhongmin Su

Professor Martin Bryce m.r.bryce@durham.ac.uk
Professor

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