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Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/10102

Title: A Pyrenyl-appended Triazole-based Ribose as a Fluorescent Sensor for Hg2+ Ion
Authors: Chen, Kuan-Hao;Lu, Cheng-Yi;Cheng, Hsiu-Jung;Chen, Shau-Jiun;Hu, Ching-Han;Wu, An-Tai
Contributors: 化學系
Keywords: Chemosensor;Ribose;Fluorescence;Pyrene
Date: 2010-11
Issue Date: 2012-05-03T06:18:18Z
Publisher: Elsevier
Abstract: For the efficient detection of toxic trace metal ions, two pyrenyl-appended triazole-based d-ribose fluorescent chemosensors 6 and 7 were prepared and their fluoroionophoric properties toward transition metal ions were investigated. Chemosensors 6 and 7 exhibit highly selective recognition toward Hg2+ ion among a series of tested metal ions in CH2Cl2/MeOH solution. The association constants of 6 and 7 are calculated to be 1.73 × 105 M−1 and 4.44 × 105 M−1, respectively. Both 6 and 7 formed complexes with the Hg2+ ion at a 1:1 ligand-to-metal ratio with a detection limit of 10–15 μM Hg2+. Computational analysis demonstrated that the Hg2+ ion occupied the coordination center of 6 with N2 and N3 atoms in two triazole groups, thus separating and distorting the two parallel pyrenes away from each other.
Relation: Carbohydrate Res., 345(17): 2557-2561
Appears in Collections:[化學系] 期刊論文

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