2019年11月5日 · A sensitive and visible colorimetric strategy was proposed for Hg 2+ detection by thymine-Hg 2+-thymine (T-Hg 2+-T) coordination chemistry and entropy driven catalytic reaction. The sensitivity of this strategy can be reached to 7 pM.

2020年9月18日 · An ultrasensitive controlled release system electrochemical aptasensor (CRSEA) has been developed for supersensitive determination of mercury ions (Hg 2+), using gold nanoparticle-linked specific single-stranded DNA (Au NPs-ssDNA) as a molecular gate and mesoporous silica nanocontainers (MSNs) as containers.

2024年7月1日 · This study represents the inaugural establishment of a Thymine-Hg 2+-Thymine strategy combined with an electrochemical aptamer sensor for detecting PAEs. Furthermore, the sensor demonstrates the potential to extend its applicability to the detection of various other food contaminants, thereby opening new avenues for food pollutant detection.

2023年10月1日 · A novel and ultrasensitive PDANPs-Apt-EBSUCNPs sensor was developed for Hg 2+ via the FRET between EBSUCNPs and PDANPs and aptamer-modulated thymine-Hg 2+-thymine strategy. The sensor was constructed by the integration of EBSUCNPs, PDANPs, and T-rich aptamers to combine the distinctive characteristics of each substance.

2021年5月3日 · One especially intriguing property of Hg (II) is its ability to bind DNA directly, making interstrand cross-links between thymine nucleobases in AT-rich sequences. We have used a combination of small molecule X-ray diffraction, X-ray spectroscopies, and computational chemistry to study the interactions of Hg (II) with thymine.

2021年5月17日 · One especially intriguing property of Hg (II) is its ability to bind DNA directly, making interstrand cross-links between thymine nucleobases in AT-rich sequences. We have used a combination of small molecule X-ray diffraction, X-ray spectroscopies, and computational chemistry to study the interactions of Hg (II) with thymine.

2015年2月15日 · In the presence of Hg(2+), Hg(2+) binds to two thymine residues through T-Hg(2+)-T interactions and the formed T-Hg(2+)-T base pairs bring FAM and ethynyl from two matched sequences into close proximity.

2018年5月1日 · We report an ultrasensitive electrochemical sensor for Hg 2+ detection, on the basis of two Hg 2+ -specific oligonucleotide probes (a thiolated capture probe and a biotinated signal probe), “terminal” signal amplification of alkaline phosphatase catalyzed deposition of silver and in situ microliter-droplet anodic stripping voltammetry (ASV).

2019年7月12日 · An ultra-sensitive and visible Hg2+ detection strategy was established. It was based on T–Hg2+–T coordination chemistry and a dual-entropy-driven catalytic reaction (EDCR). The dual EDCR was initiated by T–Hg2+–T coordination chemistry, resulting in the release of a G-rich sequence to form a hemin/G-quadrupl

A sensitive and visible colorimetric strategy was proposed for Hg2+ detection by thymine-Hg2+-thymine (T-Hg2+-T) coordination chemistry and entropy driven catalytic reaction. The entropy driven catalytic reaction is induced by T-Hg2+-T coordination chemistry, resulting the releasing of G-riched sequence.