Anion‐Coordination‐Induced Turn‐On Fluorescence of an Oligourea‐Functionalized Tetraphenylethene in a Wide Concentration Range1. (18th May 2014)

• Record Type: Journal Article
• Authors: Zhao, Jie; Yang, Dong; Zhao, Yanxia; Yang, Xiao‐Juan; Wang, Yao‐Yu; Wu, Biao
• Is Part Of: Angewandte Chemie. Volume 126:Number 26(2014)
• Page Start: 6750
• Page End: 6754
• Publication Date: 2014-05-18
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201402169
• Languages: English
• ISSNs: 0044-8249

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A tetrakis(bisurea)‐decorated tetraphenylethene (TPE) ligand (<bold>L²</bold>) was designed, which, upon coordination with phosphate ions, displays fluorescence "turn‐on" over a wide concentration range, from dilute to concentrated solutions and to the solid state. The fluorescence enhancement can be attributed to the restriction of the intramolecular rotation of TPE by anion coordination. The crystal structure of the A₄L₂ (A=anion) complex of <bold>L²</bold> with monohydrogen phosphate provides direct evidence for the coordination mode of the anion. This "anion‐coordination‐induced emission" (ACIE) is another approach for fluorescence turn‐on in addition to aggregation‐induced emission (AIE).</p> </abstract>