A Dual‐Stimuli‐Responsive Coordination Network Featuring Reversible Wide‐Range Luminescence‐Tuning Behavior. Issue 17 (21st March 2019)

• Record Type: Journal Article
• Authors: Yao, Zhao‐Quan; Xu, Jian; Zou, Bo; Hu, Zhenpeng; Wang, Kai; Yuan, Yi‐Jia; Chen, Ya‐Ping; Feng, Rui; Xiong, Jian‐Bo; Hao, Jialei; Bu, Xian‐He
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 17(2019)
• Page Start: 5614
• Page End: 5618
• Publication Date: 2019-03-21
• Subjects: luminescence -- materials science -- piezofluorochromism -- stimuli-responsive materials -- thermofluorochromism; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201900190
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: We herein report a new coordination network that deforms in a smooth and reversible manner under either thermal or pressure stimulation. Concomitantly, the organic fluorophores coordinatively bound to the channel in a face‐to‐face arrangement respond to this structural deformation by finely adapting their conformation and arrangement. As a result, the material exhibits a remarkable dual‐stimuli‐responsive luminescence shift across almost the entire visible region: The emission color of the crystal gradually changes from cyan to green upon heating and then to red upon pressure compression. Furthermore, each stage exhibits a linear dependence of both the emission maximum and intensity on the stimulus and is fully reversible. Abstract : Coping with pressure and heat : In response to changes in temperature and pressure, the flexible scaffold of a luminescent coordination network underwent smooth and reversible structural deformation that regulated the conformation and arrangement of the emissive organic molecules coordinatively bound to the channel in the structure. As a result, a reversible fluorescence shift across almost the entire visible region was observed (see picture).