This work was supported by the National Natural Science Foundation of China (21271149 and 21325102). We thank the referees for their helpful comments.
Anion-Coordination-Induced Turn-On Fluorescence of an Oligourea-Functionalized Tetraphenylethene in a Wide Concentration Range†
Article first published online: 18 MAY 2014
© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 53, Issue 26, pages 6632–6636, June 23, 2014
How to Cite
Zhao, J., Yang, D., Zhao, Y., Yang, X.-J., Wang, Y.-Y. and Wu, B. (2014), Anion-Coordination-Induced Turn-On Fluorescence of an Oligourea-Functionalized Tetraphenylethene in a Wide Concentration Range. Angew. Chem. Int. Ed., 53: 6632–6636. doi: 10.1002/anie.201402169
- Issue published online: 20 JUN 2014
- Article first published online: 18 MAY 2014
- Manuscript Received: 6 FEB 2014
- National Natural Science Foundation of China. Grant Numbers: 21271149, 21325102
- anion coordination;
- fluorescence turn-on;
A tetrakis(bisurea)-decorated tetraphenylethene (TPE) ligand (L2) 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 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).