A two-dimensional coordination polymer with Eu(III) luminescence sensitized by an aromatic 4,8-disulfonyl-2,6-naphthalenedicarboxylic acid ligand

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• 作者：Ning Zhang ; Qing-Yan Liu ; ^{qyliuchem@hotmail.com} ; Yu-Ling Wang ; ^{ylwangchem@gmail.com} ; Li-Li Chen ; Zu-Biao Wen
• 关键词：Eu(III) coordination polymer ; 4 ; 8-disulfonyl-2 ; 6-naphthalenedicarboxylic acid ; Luminescence
• 刊名：Inorganic Chemistry Communications
• 出版年：2012
• 期刊代码：39_13877003
• 类别：ch
• 出版时间：June, 2012
• 卷：20
• 期：Complete
• 页码：299-302
• 文件大小：497 K

摘要

A multifunctional ligand of 4,8-disulfonyl-2,6-naphthalenedicarboxylic acid (H₄-DSNDA) and its Eu(III) coordination polymer {(H-dpp)[Eu(DSNDA)(H₂O)₄](H₂O)₄}_n (dpp = 1,3-di(4-pyridyl)propane) (1) have been synthesized. Compound 1 is a 2D anionic network based on the paddle-wheel Eu₂(CO₂)₄ building blocks charge-balanced by the monoprotonated H-dpp molecules. Compound 1 shows intense red characteristic europium(III)-centered emission. The Eu(III) emissive state exhibits a single-exponential decay with a lifetime of 0.212 ms as measured at 613 nm after excitation at 346 nm. No observable emission peak arising from the DSNDA^{4鈭?/sup> ligand (位_em = 408 nm) is observed in the emission spectrum of compound 1, indicating an efficient energy transfer occurs from DSNDA4鈭?/sup> organic ligand to Eu(III) ions. The results reveal the large 蟺-rich aromatic organic ligand is a suitable chromophoric moiety for sensitization of Eu(III) luminescence.}