A General Strategy for Hollow Metal-Phytate Coordination Complex Micropolyhedra Enabled by Cation Exchange |
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Authors: | Meiling Chen Chenxi Peng Yaoquan Su Xue Chen Prof Yuezhou Zhang Prof Yu Wang Prof Juanjuan Peng Dr Qiang Sun Prof Xiaowang Liu Prof Wei Huang |
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Institution: | 1. Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Shaanxi Key Laboratory of Flexible Electronics, Xi'an Key Laboratory of Flexible Electronics, Xi'an Key Laboratory of Biomedical Materials & Engineering, Xi'an Institute of Flexible Electronics, Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, Xi'an, 710072 Shaanxi, China;2. State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198 China;3. SZU-NUS Collaborative Innovation Center, ICL-2DMOST, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060 China;4. Center for Functional Materials, NUS (Suzhou) Research Institute, Suzhou, Jiangsu, 215123 China |
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Abstract: | The ability to incorporate functional metal ions (Mn+) into metal–organic coordination complexes adds remarkable flexibility in the synthesis of multifunctional organic–inorganic hybrid materials with tailorable electronic, optical, and magnetic properties. We report the cation-exchanged synthesis of a diverse range of hollow Mn+-phytate (PA) micropolyhedra via the use of hollow Co2+-PA polyhedral networks as templates at room temperature. The attributes of the incoming Mn+, namely Lewis acidity and ionic radius, control the exchange of the parent Co2+ ions and the degree of morphological deformation of the resulting hollow micropolyhedra. New functions can be obtained for both completely and partially exchanged products, as supported by the observation of Ln3+ (Ln3+=Tb3+, Eu3+, and Sm3+) luminescence from as-prepared hollow Ln3+-PA micropolyhedra after surface modification with dipicolinic acid as an antenna. Moreover, Fe3+- and Mn2+-PA polyhedral complexes were employed as magnetic contrast agents. |
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Keywords: | cation exchange lanthanides metal–organic frameworks phytic acid polyhedra |
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