1. Intercalation of Europium Inclusion Complex of -Cyclodextrin into Layered Double Hydroxides Through Layer-By-Layer Assembly and Its Luminescent Properties.
- Author
-
Zhang, Wenjun, Chen, Yi, Li, Yanlin, Guan, Sumin, Chen, Yan, Yang, Qian-Qian, Liu, Lu, Xue, Qing-Chen, and Guang, Yu-Cui
- Subjects
- *
EUROPIUM , *CLATHRATE compounds , *COMPLEX compounds , *CYCLODEXTRINS , *LAYERED double hydroxides , *MOLECULAR self-assembly , *LUMINESCENCE - Abstract
In this work, organic-inorganic hybrid ultrathin transparent films (UTFs), produced by layer-by-layer (LBL) assembly of the europium inclusion complex of -cyclodextrin (-CD) and Mg-Al-layered double hydroxide (MgAl-NO3-LDHs) nanosheets, are reported. UV-visible (UV-Vis) absorption and fluorescence spectroscopy show orderly growth of the europium inclusion complex of -CD/layered double hydroxide (EICC/LDH) films with an increasing number of deposition cycles. X-ray diffraction and scanning electron microscopy measurements indicate that the films feature periodic layered structures with uniform surface morphology. Moreover, when EICC is assembled with inorganic rigid LDH nanosheets, the lifetimes are prolonged due to the isolation effect, and the UTFs are transparent with high brightness, which indicate that these films could serve as new optical materials. Transparent and high-brightness fluorescent ultrathin films (UTFs) were fabricated via layer-by-layer assembly deposition of europium inclusion of -cyclodextrin (EICC) and MgAl-NO3- layered dual hydroxide (LDH) nanosheets. EICC was assembled with inorganic rigid LDH nanosheets, which prolonged the lifetimes. The UTF showed a periodic long-range ordered and regular structure and tunable red emission intensity. These hybrid films have considerable potential for applications in the design of various LDH-based optical devices. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF