A Water-Stable Metal–Organic Framework with a Double-Helical Structure for Fluorescent Sensing

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• 作者：Xiao-Jing Liu ; Ying-Hui Zhang ; Ze Chang ; Ai-Lin Li ; Dan Tian ; Zhao-Quan Yao ; Yan-Yuan Jia ; Xian-He Bu
• 刊名：Inorganic Chemistry
• 出版年：2016
• 出版时间：August 1, 2016
• 年：2016
• 卷：55
• 期：15
• 页码：7326-7328
• 全文大小：273K
• 年卷期：0
• ISSN：1520-510X

文摘

Water instability is a crucial limiting factor in the practical application of most fluorescent metal–organic frameworks (MOFs). Here, by introducing a fascinating double-helical structure generated through dense stacking of organic ligands, a water-stable fluorescence MOF has been synthesized, namely, [Cd₂(tib)₂(bda)₂]·(solvent)_n (1) [tib =1,3,5-tris(1-imidazolyl) benzene; H₂bda = 2,2′-biphenyl dicarboxylic acid]. This helical structure helps to enhance the stability of 1 against common organic solvents and water, even acid/base aqueous solutions with a pH value ranging from 3 to 11. Furthermore, this material can be a potential fluorescent sensor for ketones.