An AIE-active phosphorescent Ir(iii) complex with piezochromic luminescence (PCL) and its application for monitoring volatile organic compounds (VOCs). Issue 46 (20th November 2017)

• Record Type: Journal Article
• Authors: Jiang, Yang; Li, Guangfu; Zhu, Dongxia; Su, Zhongmin; Bryce, Martin R.
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 46(2017)
• Page Start: 12189
• Page End: 12193
• Publication Date: 2017-11-20
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7tc04066k
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : A neutral multifunctional dinuclear Ir(iii ) complex1 with a Schiff base bridging ligand is shown to combine aggregation-induced emission (AIE), piezochromic luminescence (PCL) and vapochromism. Abstract : A neutral multifunctional dinuclear Ir(iii ) complex1 with a Schiff base bridging ligand is shown to combine aggregation-induced emission (AIE), piezochromic luminescence (PCL) and vapochromism. The complex displays a reversible colour change in its phosphorescence in the solid state between faint red and bright orange with high contrast intensity, triggered by high polarity volatile organic compounds (VOCs) or by mechanical grinding within 10 s. Notably, unlike many known vapochromic systems, complex1 exhibits ultrahigh stability, with the orange colour remaining unchanged in air for several months at room temperature. A simple and efficient monitoring device has been fabricated in which highly polar VOCs act as a switch to "turn on" the device by changing the aggregation state of complex1 .