title: Interaction between the exchanged Mn2+and Yb3+ions confined in zeolite-Y and their luminescence behaviours.
abstract: Luminescent zeolites exchanged with two distinct and interacted emissive ions are vital but less-studied for the potential applications in white light emitting diodes, solar cells, optical codes, biomedicine and so on. Typical transition metal ion Mn2+and lanthanide ion Yb3+are adopted as a case study via their characteristic transitions and the interaction between them. The option is considered with that the former with d-d transition has a large gap between the first excited state4T1and the ground state6A1(normally >17,000 cm-1) while the latter with f-f transition has no metastable excited state above 10,000 cm-1, which requires the vicinity of these two ions for energy transfer. The results of various characterizations, including BET measurement, photoluminescence spectroscopy, solid-state NMR, and X-ray absorption spectroscopy, etc., show that Yb3+would preferably enter into the zeolite-Y pores and introduction of Mn2+would cause aggregation of each other. Herein, cation-cation repulsion may play a significant role for the high valence of Mn2+and Yb3+when exchanging the original cations with +1 valence. Energy transfer phenomena between Mn2+and Yb3+occur only at elevated contents in the confined pores of zeolite. The research would benefit the design of zeolite composite opto-functional materials.
authors.affiliation: State Key Lab of Luminescent Materials and Devices, and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510641, China.
authors.forename: Shi
authors.initials: S
authors.lastname: Ye
authors.affiliation: State Key Lab of Luminescent Materials and Devices, and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510641, China.
authors.forename: Jiayi
authors.initials: J
authors.lastname: Sun
authors.affiliation: State Key Lab of Luminescent Materials and Devices, and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510641, China.
authors.forename: Xiong
authors.initials: X
authors.lastname: Yi
authors.affiliation: High Pressure Synergetic Consortium (HPSynC), Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, USA.
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Wang
authors.affiliation: State Key Lab of Luminescent Materials and Devices, and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510641, China.
authors.forename: Qinyuan
authors.initials: Q
authors.lastname: Zhang