Lanthanide-centered inorganic/organic hybrids from functionalized 2-pyrrolidinone-5-carboxylic acid bridge: Covalently bonded assembly and luminescence |
| |
Authors: | Bing Yan Hai-Feng Lu |
| |
Institution: | Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, China |
| |
Abstract: | A series of organic-inorganic hybrid material with chemically bonding have been prepared through the precursor (PDCA-Si) derived from 2-pyrrolidinone-5-carboxylic acid, which exhibits a self-organization cooperation interaction under the coordination to RE3+ (Eu3+, Tb3+). The pure organic silica hybrids (PDCA-Si) without RE3+ presents the small particle size and main blue luminescence with maximum peak 462 nm occupying a broad band from 425 to 550 nm. When Eu3+ and Tb3+ are introduced, the particle size of the hybrids increases, indicating the coordination effect has influence on the microstructure of hybrids. Besides, the corresponding Eu and Tb hybrids (Eu-PDCA-Si, Tb-PDCA-Si) show the characteristic red and green luminescence of Eu3+ and Tb3+, respectively, which suggests that the efficient intramolecular energy transfer process take place between carboxylic groups and lanthanide ions take place. The luminescence lifetimes and quantum efficiencies of them are determined and energy transfer efficiency between PDCA-Si and Eu3+ (Tb3+) is calculated. |
| |
Keywords: | Organic-inorganic hybrids Chemically bonded Lanthanide ion Photophysical property Organometallic molecular hybrids |
本文献已被 ScienceDirect 等数据库收录! |
|