Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 150, Issue -, Pages 731-736Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2015.06.021
Keywords
Fluorescent chemosensor; Logic gates; Dithienosilole; Terpyridine; Spectroscopic properties
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Funding
- National Natural Science Foundation of China [91127032, 21174035, 21274034]
- Excellent Young Teachers in Zhejiang Province
- Hangzhou Normal University [HNUEYT 2011-01-019]
- Zhejiang Province's Xinmiao Talent Plan [2014R421064]
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A chemosensor consisting of two terpyridines covalently linked to a dithienosilole unit (1) has been synthesized, and its optical and metal sensing properties have been investigated. Due to the metal-organic coordination function, 1 can bind with many transition metal ions and display different fluorescence responses that cause it to function as a turn-off' fluorescent chemosensor. A significant bathochromic shift in the fluorescence spectra is observed in the presence of Zn2+. Meanwhile, the emission of 1 is weakened upon exposure to Ag+ and Fe2+ and completely quenched by Ni2+, Co2+, and Cu2+. Based on the observed results, several logic gates, such as XNOR, INHIBIT, and IMPLICATION, have been achieved by controlling the chemical inputs. (C) 2015 Elsevier B.V. All rights reserved.
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