A rhodol-based fluorescent chemosensor for hydrazine and its application in live cell bioimaging
摘要:
A rhodol cinnamate fluorescent chemosensor (RC) has been developed for selective detection of hydrazine (N2H4). In aqueous medium, the rhodol-based probe exhibited high selectivity for hydrazine among other molecules. The addition of hydrazine triggered a fluorescence emission with 48-fold enhancement based on hydrazinolysis and a subsequent ring-opening process. The chemical probe also displayed a selective colorimetric response toward N2H4 from colorless solution to pink, readily observed by the naked eye. The detection limit of RC for hydrazine was calculated to be 300 nM (9.6 ppb). RC is membrane permeable and was successfully demonstrated to detect hydrazine in live HepG2 cells by confocal fluorescence microscopy. (C) 2017 Elsevier B.V. All rights reserved.
Highly selective and sensitive fluorescent sensing of N-acetylcysteine: Effective discrimination of N-acetylcysteine from cysteine
作者:Weihua Dong、Hui Wen、Xiao-Feng Yang、Hua Li
DOI:10.1016/j.dyepig.2012.10.014
日期:2013.3
it gives only a dim response at the same reaction conditions. The significant difference in reaction rates can be explained via the fact that NAC shows more hydrophobicity than Cys, therefore the Meisenheimer complex intermediate (2a) of its nucleophilicaromaticsubstitution with 1 can embed in CTAB micelles effectively, which will facilitate the formation of 2a and hence affords an acceleration of
Construction of a turn-on probe for fast detection of H<sub>2</sub>S in living cells based on a novel H<sub>2</sub>S trap group with an electron rich dye
A fluorescent probeANRbased on a novel H2S trap group was synthesized for discriminating detection of H2S in living cells.
基于一种新型的H2S捕获基团,合成了荧光探针ANR,用于区分活细胞中的H2S的检测。
FLUORESCENT PROBES FOR DETECTION OF COPPER
申请人:The Regents Of The University Of California
公开号:US20140051863A1
公开(公告)日:2014-02-20
The invention provides fluorescent sensors for the selective detection of a metal such as copper. The sensors may be considered to be derivatives of cyanine, fluorescein, rhodamine, rhodol, Tokyo green, or BODIPY. The sensors find particular use in detecting copper in cells and living animals.
Construction of a Library of Rhodol Fluorophores for Developing New Fluorescent Probes
作者:Tao Peng、Dan Yang
DOI:10.1021/ol902706b
日期:2010.2.5
A highly efficient and concise synthetic scheme for rhodol fluorophores is developed with palladium-catalyzedamination reaction as the key step. This new synthetic route is utilized to construct a rhodol library, potentially useful for the design of novel fluorescent probes.
off/on control, such as photoinduced electron transfer (PeT) and Förster resonance energy transfer (FRET). Here we establish a new molecular design strategy to rationally develop activatable fluorescent probes, which exhibit a fluorescence off/on change in response to target biomolecules, by controlling the twistedintramolecularchargetransfer (TICT) process. This approach was developed on the basis