A novel layered rare-earth hydroxides/polyvinyl alcohol hydrogel with multicolor photoluminescence behavior. (15th March 2021)

• Record Type: Journal Article
• Authors: Shao, Baiyi; Zhang, Xiaobao; Sang, Song; Guo, Aoping; Cui, Fangming; Yang, Xiaojing
• Is Part Of: European polymer journal. Volume 147(2021)
• Publication Date: 2021-03-15
• Subjects: Layered rare-earth hydroxides -- PVA hydrogels -- Photoluminescence -- Energy transfer -- Multicolor; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; Polymerization; Polymers; Periodicals; Electronic journals; 547.705
• DOI: 10.1016/j.eurpolymj.2021.110324
• Languages: English
• ISSNs: 0014-3057

Abstract

Graphical abstract: LEux Tb1-x Hs nanosheets can be stably isolated in the hydrogels through hydrogen bonds between the hydroxyl groups of LEux Tb1-x Hs and PVA, which avoids the energy transfer from Tb 3+ to Eu 3+ in adjacent layers to fully achieve multicolor photoluminescence emission. Highlights: A novel NSs-LEux Tb1-x Hs/PVA hydrogel with the multicolor PL behavior was prepared. Nanosheets were stably isolated in the hydrogels through hydrogen bonds. The multicolor PL behavior was due to absence of energy transfer between Eu 3+ and Tb 3+ . Abstract: The layered rare-earth hydroxides LEux Tb1-x Hs nanosheets were stably isolated in polyvinyl alcohol (PVA) hydrogels via a freeze–thaw method (x: 0–1) due to the hydrogen bond interactions between LEux Tb1-x Hs and PVA. The energy transfer from Tb 3+ to Eu 3+ and the Eu 3+ concentration quenching effect were inhibited in LEux Tb1-x Hs/PVA hydrogels, resulting in the independent photoluminescence (PL) emissions of Eu 3+ and Tb 3+ in and a corresponding multicolor PL.