Lanthanide(III)-Based Multicolor Luminescent Hybrid Gel for Amine Sensing

作者：Liu, Caixia; Wang, Tianren; Yang, Daqing; Li, Zhiqiang; Li, Huanrong^*

来源：Chemistry-An Asian Journal, 2017, 12(7): 768-774.

DOI：10.1002/asia.201700026

• amines
• gels
• luminescence
• polysilsesquioxanes
• sensors

Bridged polysilsesquioxanes (BPs) show great potential in the development of lanthanide-based luminescent materials, owing to their capacity to loading lanthanide complexes with high concentration and their flexible processability. A novel BP precursor, consisting of a C-3-symmetrical benzene central core moiety, capable of sensitizing the luminescence of Eu3+ and Tb3+ is reported. Tunable, fullcolor luminescent gels were facilely prepared by mixing the as-synthesized precursor and Ln(3+) ions in appropriate solvents. By either changing the Eu3+ /Tb3+ molar ratio or altering the excitation wavelength, the emission colors of the final gels can be finely tuned. Additionally, the yellow-colored emissive gel with a molar ratio of Eu3+ to Tb3+ of 0.5 can be used as an effective ratiometric luminescent sensor for distinguishing amines with lower pK(a) (<5) from those with higher pK(a) (> 9).

• 出版日期2017-4-4
• 单位河北工业大学