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Luminescent Polynuclear Zn- and Cd-Ln Square-Like Nanoclusters With a Flexible Long-Chain Schiff Base Ligand.

ABSTRACT: Two series of Zn-Ln and Cd-Ln nanoclusters [Ln4Zn8L2(OAc)20(OH)4] [Ln = Nd (1), Yb (2), and Sm (3)] and [Ln2Cd2L2(OAc)2(OH)2(OCH3)2] [Ln = Nd (4), Yb (5), and Sm (6)] were prepared using a long-chain Schiff base ligand with a flexible (CH2)2O(CH2)2O(CH2)2 chain. All these clusters show square-like structures. The Schiff base ligands show "linear" configurations in the structures of 1-6, and the metric dimensions of Zn-Ln and Cd-Ln clusters measure ~8 × 14 × 21 and 8 × 12 × 12 Å, respectively. The study of luminescence properties shows that the Zn/L and Cd/L chromophores can effectively transfer energy to the lanthanide ions, and 1-6 show visible and NIR emissions.

SUBMITTER: Zhu T 

PROVIDER: S-EPMC6080591 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Luminescent Polynuclear Zn- and Cd-Ln Square-Like Nanoclusters With a Flexible Long-Chain Schiff Base Ligand.

Zhu Ting T   Yang Xiaoping X   Zheng Xiaohui X   Wang Shiqing S   Bo Le L   Wang Chengri C   Chen Hongfen H   Jiang Dongmei D   Schipper Desmond D  

Frontiers in chemistry 20180731

Two series of Zn-Ln and Cd-Ln nanoclusters [Ln<sub>4</sub>Zn<sub>8</sub>L<sub>2</sub>(OAc)<sub>20</sub>(OH)<sub>4</sub>] [Ln = Nd (<b>1</b>), Yb (<b>2</b>), and Sm (<b>3</b>)] and [Ln<sub>2</sub>Cd<sub>2</sub>L<sub>2</sub>(OAc)<sub>2</sub>(OH)<sub>2</sub>(OCH<sub>3</sub>)<sub>2</sub>] [Ln = Nd (<b>4</b>), Yb (<b>5</b>), and Sm (<b>6</b>)] were prepared using a long-chain Schiff base ligand with a flexible (CH<sub>2</sub>)<sub>2</sub>O(CH<sub>2</sub>)<sub>2</sub>O(CH<sub>2</sub>)<sub>2</sub> chai  ...[more]

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