title: A series of inorganic-organic hybrid cadmium borates with novel Cd-centred [Cd@B14O20(OH)6](2-) clusters.
abstract: Four novel inorganic-organic hybrid cadmium borates, namely [EAH]2{(py)2Cd@[B14O20-(OH)6]} (1, py = pyridine, EA = ethylamine), [PAH]2{(py)2Cd@[B14O20(OH)6]} (2, PA = propylamine), [pyH]2{(py)2Cd@[B14O20(OH)6]} (3) and {(AImH)2Cd@[B14O20(OH)6]} (4, AIm = 1-(3-aminopropyl)imidazole) have been solvothermally synthesized and characterized by elemental analysis, thermogravimetric analysis, IR spectroscopy, UV-Vis-NIR spectroscopy, fluorescence spectroscopy, powder X-ray diffraction, and single-crystal X-ray diffraction, respectively. They represent the first hybrid cadmium borates that exhibit 3D supramolecular open-frameworks with different topologies. All the networks are formed by the unprecedented Cd-centred cluster [Cd@B14O20(OH)6](2-), and further link each other via a multipoint H-bond system. UV-Vis-NIR spectral investigation reveals that these borates are wide-band-gap semiconductors. Moreover, they display strong fluorescence emission around 430 nm, making them excellent candidates for optoelectronic applications as blue materials.
authors: MOE Key Laboratory of Cluster Science, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China. ygy@bit.edu.cn.
authors: Qi
authors: Q
authors: Wei
authors: Ya-Jun
authors: YJ
authors: Zhang
authors: Ying
authors: Y
authors: Song
authors: Guo-Yu
authors: GY
authors: Yang
authors: Xiaodong
authors: X
authors: Zou