Self‐Assembly versus Stepwise Synthesis: Heterometal–Organic Frameworks Based on Metalloligands with Tunable Luminescence Properties. Issue 34 (12th July 2013)

• Record Type: Journal Article
• Authors: Zhang, Shu‐Ran; Du, Dong‐Ying; Tan, Ke; Qin, Jun‐Sheng; Dong, Hui‐Qing; Li, Shun‐Li; He, Wen‐Wen; Lan, Ya‐Qian; Shen, Ping; Su, Zhong‐Min
• Is Part Of: Chemistry. Volume 19:Issue 34(2013)
• Page Start: 11279
• Page End: 11286
• Publication Date: 2013-07-12
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201301536
• Languages: English
• ISSNs: 0947-6539

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A new family of heterometal–organic frameworks has been prepared by two synthesis strategies, in which <bold>IFMC‐26</bold> and <bold>IFMC‐27</bold> are constructed by self‐assembly and <bold>IFMC‐28</bold> is obtained by stepwise synthesis based on the metalloligand (IFMC=Institute of Functional Material Chemistry). <bold>IFMC‐26</bold> is a (3, 6)‐connected net and <bold>IFMC‐27</bold> 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 <bold>IFMC‐28</bold>. Notably, <bold>IFMC‐26‐Eu</bold>_{<italic><bold>x</bold></italic>}<bold>Tb</bold>_{<italic><bold>y</bold></italic>} and <bold>IFMC‐28‐Eu</bold>_{<italic><bold>x</bold></italic>}<bold>Tb</bold>_{<italic><bold>y</bold></italic>} have been obtained by changing the molar ratios of raw materials. Owing to the porosity of <bold>IFMC‐26</bold>, <bold>Tb³⁺@IFMC‐26‐Eu</bold> and <bold>Eu³⁺@IFMC‐26‐Tb</bold> are obtained by postencapsulating Tb^III and Eu^III 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 Ln^III ions.</p> </abstract>