Self-assemblies of luminescent rare earth compounds in capsules and multilayers.
This review addresses luminescent rare earth compounds assembled in microcapsules as well as in planar films fabricated by the layer-by-layer (LbL) technique, the Langmuir-Blodgett (LB) method and in self-assembled monolayers. Chemical precipitation, electrostatic, van der Waals interactions and covalent bonds are involved in the assembly of these compounds. Self-organized ring patterns of rare earth complexes in Langmuir monolayers and on planar surfaces with stripe patterns, as well as fluorescence enhancement due to donor-acceptor pairs, microcavities, enrichment of rare earth compounds, and shell protection against water are described. Recent information on the tuning of luminescence intensity and multicolors by the excitation wavelength and the ratio of rare earth ions, respectively, are also reviewed. Potential applications of luminescent rare earth complex assemblies serving as biological probes, temperature and gas sensors are pointed out.
Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, Shandong University, Jinan 250199, China; Key Laboratory of Special Functional Aggregated Materials of the Ministry of Education, Shandong University, Jinan 250199, China. Electronic address: zhrj@sdu.edu.cn.
Renjie
R
Zhang
Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, Shandong University, Jinan 250199, China.
Juanjuan
J
Shang
Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, Shandong University, Jinan 250199, China.
Jing
J
Xin
Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, Shandong University, Jinan 250199, China.
Beibei
B
Xie
Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, Shandong University, Jinan 250199, China.
Ya
Y
Li
Department of Interfaces, Max Planck Institute of Colloids and Interfaces, Potsdam 14424, Germany.
Helmuth
H
Möhwald
Fluorescence; Langmuir–Blodgett (LB) films; Layer-by-layer (LbL); Microcapsules; Rare earth compounds; Self-assembled monolayers (SAMs)