A NIR rhodamine fluorescent chemodosimeter specific for glutathione: Knoevenagel condensation, detection of intracellular glutathione and living cell imaging

2018 ◽  
Vol 6 (12) ◽  
pp. 1791-1798 ◽  
Author(s):  
Lulu Tong ◽  
Ying Qian
Keyword(s):  
Detection Limit ◽  
Near Infrared ◽  
Cell Imaging ◽  
Knoevenagel Condensation ◽  
High Sensitivity ◽  
Conjugate Addition ◽  
Intracellular Glutathione ◽  
Living Cell Imaging ◽  
Fluorescent Chemodosimeter ◽  
Spirolactam Opening

A new near-infrared probe for detecting glutathione based on conjugate addition and intramolecular amino induced spirolactam opening named RhAN was designed and synthesized. Its emission intensity enhance more than 90-fold upon addition of GSH. In addition, it also has high sensitivity with low detection limit of 0.1 μM.

A highly selective turn-on fluorescent chemodosimeter for Cr(vi) and its application in living cell imaging

RSC Advances ◽  
2014 ◽  
Vol 4 (6) ◽  
pp. 2989-2992 ◽  
Author(s):  
Jia-Hai Ye ◽  
Yixin Wang ◽  
Yang Bai ◽  
Wenchao Zhang ◽  
Weijiang He
Keyword(s):  
Living Cell ◽  
Cell Imaging ◽  
Turn On ◽  
Living Cell Imaging ◽  
Fluorescent Chemodosimeter

A near-infrared “on–off” fluorescent and colourimetric cyanide chemodosimeter based on phenothiazine with applications in living cell imaging

RSC Advances ◽  
2014 ◽  
Vol 4 (104) ◽  
pp. 59809-59816 ◽  
Author(s):  
Qi Zou ◽  
Xin Li ◽  
Qunjie Xu ◽  
Hans Ågren ◽  
Wandong Zhao ◽  
...  
Keyword(s):  
Living Cell ◽  
Near Infrared ◽  
Cell Imaging ◽  
Living Cell Imaging

scholarly journals Tetraphenylethylene- and fluorene-functionalized near-infrared aza-BODIPY dyes for living cell imaging

RSC Advances ◽  
2017 ◽  
Vol 7 (88) ◽  
pp. 55839-55845 ◽  
Author(s):  
Li Zhu ◽  
Wensheng Xie ◽  
Lingyun Zhao ◽  
Yongjie Zhang ◽  
Zhijian Chen
Keyword(s):  
Living Cell ◽  
Near Infrared ◽  
Cell Imaging ◽  
Application Potential ◽  
Living Cell Imaging

The new NIR absorbing aza-BODIPY dyes bearing tetraphenylethylene and fluorinyl substituents were synthesized and characterized. The application potential of these new dyes in living cell imaging was demonstrated.

A near-infrared fluorescent probe for the ratiometric detection and living cell imaging of β-galactosidase

2019 ◽  
Vol 411 (30) ◽  
pp. 7957-7966 ◽  
Author(s):  
Xueyan Zhang ◽  
Xiangzhu Chen ◽  
Yuanyuan Zhang ◽  
Kaizheng Liu ◽  
Hongjing Shen ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Living Cell ◽  
Near Infrared ◽  
Cell Imaging ◽  
Ratiometric Detection ◽  
Living Cell Imaging

A Near‐Infrared Fluorescence Chemosensor Based on Isothiocyanate‐Aza‐BODIPY for Cyanide Detection at the Parts per Billion Level: Applications in Buffer Media and Living Cell Imaging

ChemPlusChem ◽  
2019 ◽  
Vol 84 (3) ◽  
pp. 252-259 ◽  
Author(s):  
Pornthip Piyanuch ◽  
Jitnapa Sirirak ◽  
Anyanee Kamkaew ◽  
Oratai Weeranantanapan ◽  
Vinich Promarak ◽  
...  
Keyword(s):  
Living Cell ◽  
Near Infrared ◽  
Cell Imaging ◽  
Near Infrared Fluorescence ◽  
Living Cell Imaging

scholarly journals Highly luminescent, biocompatible ytterbium(iii) complexes as near-infrared fluorophores for living cell imaging

2018 ◽  
Vol 9 (15) ◽  
pp. 3742-3753 ◽  
Author(s):  
Yingying Ning ◽  
Juan Tang ◽  
Yi-Wei Liu ◽  
Jing Jing ◽  
Yuansheng Sun ◽  
...  
Keyword(s):  
Living Cell ◽  
Near Infrared ◽  
Cell Imaging ◽  
Aqueous Media ◽  
Synthetic Methods ◽  
Quantum Yields ◽  
Fluorescence Lifetime Imaging ◽  
Time Resolved ◽  
Lifetime Imaging ◽  
Living Cell Imaging

We report three synthetic methods to prepare biocompatible Yb3+complexes, which displayed high NIR luminescence with quantum yields up to 13% in aqueous media. This renders β-fluorinated Yb3+porphyrinoids a new class of NIR probes for living cell imaging including time-resolved fluorescence lifetime imaging.

Computational design of a two-photon excited FRET-based ratiometric fluorescent Cu2+ probe for living cell imaging

RSC Advances ◽  
2015 ◽  
Vol 5 (119) ◽  
pp. 98144-98153 ◽  
Author(s):  
Dan Wang ◽  
Ai-Min Ren ◽  
Jing-Fu Guo ◽  
Lu-Yi Zou ◽  
Shuang Huang
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Cell Imaging ◽  
Computational Design ◽  
Energy Transfer Efficiency ◽  
Infrared Light ◽  
Two Photon ◽  
Light Region ◽  
Living Cell Imaging ◽  
Ratiometric Fluorescent Probe

A novel TP FRET ratiometric fluorescent probe 2a for Cu2+ is designed. 2a has a large TPA peak in the near-infrared light region and its energy transfer efficiency is nearly 100%.

scholarly journals Comparison of laser-based photoacoustic and optical detection of methane

2021 ◽  
Vol 10 (1) ◽  
pp. 25-35 ◽  
Author(s):  
Thomas Strahl ◽  
Johannes Herbst ◽  
Eric Maier ◽  
Sven Rademacher ◽  
Christian Weber ◽  
...  
Keyword(s):  
Detection Limit ◽  
Near Infrared ◽  
Dynamic Range ◽  
High Sensitivity ◽  
Environmental Research ◽  
Detection Techniques ◽  
Direct Absorption Spectroscopy ◽  
Cell Dimensions ◽  
Potential Applications ◽  
Path Lengths

Abstract. The measurement of low methane (CH4) concentrations is a key objective for safety of industrial and public infrastructures and in environmental research. Laser spectroscopy is best suited for this purpose because it offers high sensitivity, selectivity, dynamic range, and a fast measurement rate. The physical basis of this technique is infrared absorption of molecular gases. Two detection schemes – direct absorption spectroscopy (DAS) and photoacoustic spectroscopy (PAS) – are compared at three wavelength regions in the near-infrared (NIR), mid-wavelength (MWIR), and long-wavelength (LWIR) infrared ranges. For each spectral range a suitable semiconductor laser is selected and used for both detection techniques: a diode laser (DL), an interband cascade laser (ICL), and a quantum cascade laser (QCL) for NIR, MWIR and LWIR, respectively. For DAS short absorption path lengths comparable to the cell dimensions of the photoacoustic cell for PAS are employed. We show that for DAS the lowest detection limit can be achieved in the MWIR range with noise-equivalent concentrations (NECs) below 10 ppb. Using PAS, lower detection limits and higher system stabilities can be reached compared to DAS, especially for long integration times. The lowest detection limit for PAS is obtained in the LWIR with a NEC of 7 ppb. The different DAS and PAS configurations are discussed with respect to potential applications.

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