Journal
ANALYST
Volume 136, Issue 5, Pages 955-961Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0an00927j
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Funding
- NSFC (National Science Fund of China) [90813031, 30973605, 21072155, 20921062]
- National Key Foundation for Infectious Diseases [2008ZX10003-005]
- State Key Laboratory of Bio-Organic & Natural Products Chemisty, Shanghai Institute of Organic Chemistry
- Ministry of Education of the People's Republic of China [20100471141]
- Fundamental Research Funds for the Central Universities
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In the present work, a novel water-soluble cationic triazatetrabenzcorrole compound was synthesised. Its aggregation and fluorescence quenching properties are demonstrated by serval methods, such as UV-vis and fluorescence spectroscopic studies and naked-eye visualization. Unlike the traditional Hg2+ sensor based on thymine-Hg2+-thymine, we use a novel approach, exploiting the high affinity of Hg2+ for sulfur in phosphorothioate DNA. Based on the S-Hg2+-S pairs, we designed the phosphorothioate DNA T4G4-S3 as an Hg2+ sensor, which can detect Hg2+ sensitively and selectively in aqueous solution. And this sensing system is fairly fast and convenient.
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