Hg2+-selective chromogenic and fluorogenic chemodosimeter based on thiocoumarins
作者:Myung Gil Choi、Youn Hwan Kim、Ji Eun Namgoong、Suk-Kyu Chang
DOI:10.1039/b905612b
日期:——
The highly selective chemodosimetric behavior of thiocoumarins toward Hg2+ ions was investigated; significant chromogenic and fluorogenic signaling of Hg2+ ions occurs from the transformation of thiocoumarin to coumarin by Hg2+-induced selective desulfurization.
A thiocoumarin-based colorimetric and ratiometric fluorescent probe for Hg<sup>2+</sup> in aqueous solution and its application in live-cell imaging
作者:Siyao Qin、Bo Chen、Jing Huang、Yifeng Han
DOI:10.1039/c8nj01491d
日期:——
colorimetric and ratiometricfluorescent chemodosimeter for the detection of Hg2+ has been rationally designed and developed. The probe operates via the specific mercury-promoted desulfurization reaction of thiocoumarin to coumarin and exhibits high selectivity and sensitivity in almost pure aqueoussolution (containing only 1% DMSO) with a low detection limit of 1.85 ppb. Furthermore, the probe was successfully
Single-Atom Fluorescence Switch: A General Approach toward Visible-Light-Activated Dyes for Biological Imaging
作者:Juan Tang、Michael A. Robichaux、Kuan-Lin Wu、Jingqi Pei、Nhung T. Nguyen、Yubin Zhou、Theodore G. Wensel、Han Xiao
DOI:10.1021/jacs.9b06237
日期:2019.9.18
general strategy to obtain photoactivatable fluorogenicdyes across a broad spectral range. Thiocarbon-yl substitution within fluorophores results in significant loss of fluorescence via a photoinduced electron transfer-quenching mechanism as suggested by theoretical calculations. Significantly, upon exposure to air and visiblelight residing in their absorption regime (365 nm - 630 nm), thio-caged fluorophores
VISIBLE LIGHT-ACTIVATED DYES AND METHODS OF USE THEREOF
申请人:William Marsh Rice University
公开号:US20200271587A1
公开(公告)日:2020-08-27
Disclosed herein are photoactivable fluorophores comprising one or more thiocarbonyl groups as well as conjugates and compositions thereof. The present disclosure also provides methods of preparing photoactivatable fluorophores as well as methods of imaging using the photoactivatable fluorophores, conjugates, and compositions of the present disclosure.
Conformational restraint as a strategy for navigating towards lysosomes
作者:Xing-Guang Liang、Juan Cheng、Siyao Qin、Ling-Xiao Shao、Ming-Zhu Huang、Gang Wang、Yifeng Han、Feng Han、Xin Li
DOI:10.1039/c8cc06155f
日期:——
Using the conformational restraint strategy, we developed a hydrazonate-derived coumarin into a lysosome targeting probe for imaging native formaldehyde at the subcellular level.