Anion-coordination-induced turn-on fluorescence of an oligourea- functionalized tetraphenylethene in a wide concentration range

Jie Zhao, Dong Yang, Yanxia Zhao, Xiao Juan Yang, Yao Yu Wang, Biao Wu*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

148 引用 (Scopus)

摘要

A tetrakis(bisurea)-decorated tetraphenylethene (TPE) ligand (L 2) 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 A4L 2 (A=anion) complex of L2 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). Phosphate ions in a bind: The tetrakis(bisurea)-decorated tetraphenylethene (TPE) displays fluorescence "turn-on" over a wide concentration range upon phosphate coordination. The fluorescence enhancement can be attributed to the restriction of the intramolecular rotation of TPE by anion coordination. This "anion-coordination-induced emission" (ACIE) is another approach for fluorescence turn-on.

源语言英语
页(从-至)6632-6636
页数5
期刊Angewandte Chemie - International Edition
53
26
DOI
出版状态已出版 - 23 6月 2014
已对外发布

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