Self‐Assembly versus Stepwise Synthesis: Heterometal–Organic Frameworks Based on Metalloligands with Tunable Luminescence Properties |
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| Authors: | Dr Shu‐Ran Zhang Dr Dong‐Ying Du Prof Ke Tan Dr Jun‐Sheng Qin Dr Hui‐Qing Dong Prof Shun‐Li Li Dr Wen‐Wen He Prof Ya‐Qian Lan Dr Ping Shen Prof Zhong‐Min Su |
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| Institution: | 1. Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin (P. R. China), Fax: (+86)?431‐85684009;2. Biological Scientific and Technical College, Changchun University, Changchun 130022, Jilin (P. R. China);3. Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, Jiangsu (P. R. China) |
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| Abstract: | A new family of heterometal–organic frameworks has been prepared by two synthesis strategies, in which IFMC‐26 and IFMC‐27 are constructed by self‐assembly and IFMC‐28 is obtained by stepwise synthesis based on the metalloligand (IFMC=Institute of Functional Material Chemistry). IFMC‐26 is a (3,6)‐connected net and IFMC‐27 is a (4,8)‐connected 3D framework. The metalloligands {Ni(H4L)}(NO3)2 are connected by binuclear lanthanide clusters giving rise to a 2D sheet structure in IFMC‐28 . Notably, IFMC‐26‐Eu x Tb y and IFMC‐28‐Eu x Tb y have been obtained by changing the molar ratios of raw materials. Owing to the porosity of IFMC‐26 , Tb3+@IFMC‐26‐Eu and Eu3+@IFMC‐26‐Tb are obtained by postencapsulating TbIII and EuIII ions into the pores, respectively. Tunable luminescence in metal–organic frameworks is achieved by the two kinds of doping methods. In particular, the quantum yields of heterometal–organic frameworks are apparently enhanced by postencapsulation of LnIII ions. |
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| Keywords: | luminescence metal– organic frameworks metalloligands self‐assembly stepwise synthesis |
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