Tetraphenylethylene-based color-tunable AIE-ESIPT chromophores. (April 2020)

• Record Type: Journal Article
• Authors: Hu, Zhen; Zhang, Haoke; Chen, Yan; Wang, Qingsong; Elsegood, Mark R.J.; Teat, Simon J.; Feng, Xing; Islam, Md Monarul; Wu, Fugen; Tang, Ben Zhong
• Is Part Of: Dyes and pigments. Volume 175(2020)
• Publication Date: 2020-04
• Subjects: Aggregation-induced emission -- Tetraphenylethene -- Excited-state intramolecular proton transfer -- Color-tunable chromophore; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2019.108175
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: There has been growing interest in the design and development of tunable light emissive materials that have potential applications in lighting and displays. In this paper, we have incorporated the aggregation induced emission (AIE) with excited-state intramolecular proton transfer (ESIPT) process into one molecular skeleton for generation of color-tunable emitting materials. As expected, the high air/photo-stability of TPE-based asymmetric Schiff-base chromophores 1 –2 displayed clear AIE characteristics and significant advantages in terms of tunable emission containing blue, warm white, as well as orange-red in solution. More importantly, all compounds 1 –4 display brilliant colors by adjusting the intensity of blue and red emission in a mixture with a polymer in the solid state. This innovative research would provide a new, efficient channel for the discovery of well-organized full color emitting organic materials. Graphical abstract: This paper presents a set of color-tunable emitting materials by incorporating the aggregation-induced emission (AIE) with excited-state intramolecular proton transfer (ESIPT) process into TPE-based asymmetric Schiff-base chromophores molecules, which displayed clear AIE characteristics and significant advantages in terms of tunable emission containing blue, warm white, as well as orange-red in solution and in thin film. Image 1 Highlights: Four new tetraphenylethylene-based Schiff base chromophores 1 –4 were prepared. The chromophores exhibited novel aggregation-induced emission plus excited-state intramolecular proton transfer characteristics. The high air/photo-stability of Schiff-base chromophores showed widely color-tunable emissive both in solution and in film.