title: Lanthanide(III)-Based Multicolor Luminescent Hybrid Gel for Amine Sensing.
abstract: 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 C3-symmetrical benzene central core moiety, capable of sensitizing the luminescence of Eu3+and Tb3+is reported. Tunable, full-color luminescent gels were facilely prepared by mixing the as-synthesized precursor and Ln3+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 pKa(<5) from those with higher pKa(>9).
authors.affiliation: School of Chemical Engineering and Technology, Hebei University of Technology, Guang Rong Dao 8, Hongqiao District, Tianjin, 300130, China.
authors.forename: Caixia
authors.initials: C
authors.lastname: Liu
authors.affiliation: School of Chemical Engineering and Technology, Hebei University of Technology, Guang Rong Dao 8, Hongqiao District, Tianjin, 300130, China.
authors.forename: Tianren
authors.initials: T
authors.lastname: Wang
authors.affiliation: School of Chemical Engineering and Technology, Hebei University of Technology, Guang Rong Dao 8, Hongqiao District, Tianjin, 300130, China.
authors.forename: Daqing
authors.initials: D
authors.lastname: Yang
authors.affiliation: School of Chemical Engineering and Technology, Hebei University of Technology, Guang Rong Dao 8, Hongqiao District, Tianjin, 300130, China.
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Li
authors.affiliation: School of Chemical Engineering and Technology, Hebei University of Technology, Guang Rong Dao 8, Hongqiao District, Tianjin, 300130, China.
authors.forename: Huanrong
authors.initials: H
authors.lastname: Li
keywords: amines; gels; luminescence; polysilsesquioxanes; sensors