study, a novel red-emitting off-on fluorescent probe Cys-TCF was masterly constructed for discriminative detection of Cys. After a series of experimental assessment, Cys-TCF displayed higher selectivity and sensitivity for Cys over other biothilols with a low detection limit (0.04 μmol/L). More notably, the probe was also successfully applied to image Cys in livecells and live zebrafishes with low cytotoxicity
A novel long-wavelength fluorescent probe for discrimination of different palladium species based on Pd-catalyzed reactions
作者:Ting Yu、Guoxing Yin、Peng Yin、Ying Zeng、Haitao Li、Youyu Zhang、Shouzhuo Yao
DOI:10.1039/c7ra01731f
日期:——
synthesized a novel long-wavelengthfluorescentprobe MFC for detection of palladium (Pd0). This probe not only shows high selectivity for palladium, but also could quickly discriminate different palladium species (Pd0, Pd2+, Pd4+) in phosphate buffered solution. After the reaction with Pd(PPh3)4, the UV absorption of the probe MFC shifts from 334 nm to 594 nm within a few minutes. The probe MFC conjugated
for rapid and ultrasensitive detection of nitroxyl (HNO) is of great importance for biomedical researchers to investigate the detailed functions and mechanisms of HNO in living systems. Herein, based on an internal charge transfer (ICT) mechanism, we developed a novel ratiometric, colorimetric and far-red fluorescent probe (HNO-TCF) for the rapid and ultrasensitive detection of HNO in living cells. HNO-TCF
A highly selective long-wavelength turn-on fluorescentprobe has been developed for the detection of N2H4. The probe was prepared by conjugation the tricyanofuran-based D-π-A system with a recognizing moiety of acetyl group. In the presence of N2H4, the probe can be effectively hydrazinolysized and produce a turn-on fluorescent emission at 610 nm as well as a large red-shift in the absorption spectrum
已经开发出用于检测N 2 H 4的高选择性长波长开启荧光探针。通过使基于三氰呋喃的D-π-A系统与乙酰基的识别部分缀合来制备探针。在存在N 2 H 4的情况下,探针可以有效地进行肼解处理,并在610 nm处产生开启的荧光发射,并在吸收光谱中产生大的红移,对应于从黄色到蓝色的颜色变化。通过HPLC,MS,UV-vis,发射光谱和理论计算研究证实了传感机理。探针显示出对N 2 H 4的高选择性和敏感性LOD(检测限)为0.16μM。此外,该探针已成功地用于检测活细胞中的肼。