1 MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China. huangsl@bit.edu.cn liutf@bit.edu.cn ygy@bit.edu.cn.
A series of metallarectangles 1-5 were synthesized by the selective combination of (p-cymene)Ru-corner, bis(β-diketone) arms and bifunctional pyridyl linkers. They exhibited a very rare phenomenon of haloalkane-induced fluorescence enhancement.