期刊
TETRAHEDRON LETTERS
卷 49, 期 11, 页码 1843-1846出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2008.01.037
关键词
transition metals; porphyrins; sensors; luminescence; silver
An expanded porphyrin [26]hexaphyrin(1.1.1.1.1.1) was exploited as a fluorescent chemodosimeter for Ag+ ions with high sensitivity and selectivity via near-infrared luminescence above 900 nm, a region that is free from optical interference in the visible wavelength range induced by the commonly used matrix and other organic compounds. The association constant for the Ag+-porphyrin complexation was evaluated by spectroscopic titration method to be 7.24 x 10(10) M-1. (C) 2008 Elsevier Ltd. All rights reserved.
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