title: Linearly tunable emission colors obtained from a fluorescent-phosphorescent dual-emission compound by mechanical stimuli.
abstract: Organic mechanoluminochromic materials are mechano/piezo-responsive and promising for applications in sensors, displays, and data storage devices. However, their switching range of emission is seriously impeded by only one kind of emission (either a fluorescent or phosphorescent peak) in the spectrum of single organic compounds. This study presents a design strategy for pure organic compounds with excellent room-temperature fluorescent-phosphorescent dual-emission (rFPDE) properties, which combines the effective factors of dipenylsulfone group, crystalline state, and heavy atom effect. Following the principle of color mixing, myriad emission colors with a wide range from orange to purple and across white zone in a straight line in the chromaticity diagram of the Commission Internationale de l'Eclairage (CIE) can be obtained by simply mechanical grinding the compound. The unique properties could be concentrated on a pure organic compound through this design strategy, which provides a new efficient channel for the discovery of efficient mechano-responsive organic materials.
authors: PCFM Lab, GDHPPC Lab, KLGHEI of Environment and Energy Chemistry, State Key Laboratory of Optoelectronic Material and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China).
authors: Zhu
authors: Z
authors: Mao
authors: PCFM Lab, GDHPPC Lab, KLGHEI of Environment and Energy Chemistry, State Key Laboratory of Optoelectronic Material and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China).
authors: Zhiyong
authors: Z
authors: Yang
authors: Yingxiao
authors: Y
authors: Mu
authors: PCFM Lab, GDHPPC Lab, KLGHEI of Environment and Energy Chemistry, State Key Laboratory of Optoelectronic Material and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China). ceszy@mail.sysu.edu.cn.
authors: Yi
authors: Y
authors: Zhang
authors: Shenzhen China Star Optoelectronics Technology Co., Ltd, Guangdong (China).
authors: Yi-Fan
authors: YF
authors: Wang
authors: PCFM Lab, GDHPPC Lab, KLGHEI of Environment and Energy Chemistry, State Key Laboratory of Optoelectronic Material and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China). chizhg@mail.sysu.edu.cn.
authors: Zhenguo
authors: Z
authors: Chi
authors: Shenzhen China Star Optoelectronics Technology Co., Ltd, Guangdong (China).
authors: Chang-Cheng
authors: CC
authors: Lo
authors: PCFM Lab, GDHPPC Lab, KLGHEI of Environment and Energy Chemistry, State Key Laboratory of Optoelectronic Material and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China).
authors: Siwei
authors: S
authors: Liu
authors: TCL Corporate Research, Guangzhou (China).
authors: Alan
authors: A
authors: Lien
authors: PCFM Lab, GDHPPC Lab, KLGHEI of Environment and Energy Chemistry, State Key Laboratory of Optoelectronic Material and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China). xjr@mail.sysu.edu.cn.
authors: Jiarui
authors: J
authors: Xu
keywords: color mixing; dual emission; mechanochromic materials; phosphorescence; tunable emission