scholarly journals Carboxylato-Pillar[6]arene-Based Fluorescent Indicator Displacement Assays for Caffeine Sensing

2021 ◽  
Vol 9 ◽  
Author(s):  
Qunpeng Duan ◽  
Yibo Xing ◽  
Kainan Guo
Keyword(s):  
Charge Transfer ◽  
Fluorescence Enhancement ◽  
Intramolecular Charge Transfer ◽  
Colour Change ◽  
Fluorescent Dye ◽  
Water Soluble ◽  
Selective Detection ◽  
Fluorescent Indicator ◽  
Displacement System ◽  
Displacement Assays

In the present work, we have developed a new indicator displacement system based on pillararene for anionic water-soluble carboxylato pillar [6] arene (WP6) and aromatic fluorescent dye safranine T (ST). A large fluorescence enhancement and colour change of ST were observed after complexation with electron-rich cavity in WP6 because of host-guest twisted intramolecular charge-transfer interactions. The constructed pillararene-indicator displacement system can be applied for caffeine selective detection in water.

scholarly journals A real-time ratiometric fluorescent probe for imaging of SO2 derivatives in mitochondria of living cells

RSC Advances ◽  
2019 ◽  
Vol 9 (39) ◽  
pp. 22348-22354 ◽  
Author(s):  
Junwei Shi ◽  
Wei Shu ◽  
Yong Tian ◽  
Yulong Wu ◽  
Jing Jing ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Real Time ◽  
Fluorescent Probe ◽  
Intramolecular Charge Transfer ◽  
Living Cells ◽  
Selective Detection ◽  
Hemicyanine Dye ◽  
Ratiometric Fluorescent Probe

A real-time ratiometric fluorescent probe (IN-CZ) for highly selective detection of sulfite was designed and synthesized, which is based on modulating the intramolecular charge transfer of the hemicyanine dye platform.

Development of a near-infrared ratiometric fluorescent probe for glutathione using an intramolecular charge transfer signaling mechanism and its bioimaging application in living cells

2019 ◽  
Vol 7 (5) ◽  
pp. 809-814 ◽  
Author(s):  
Yong Zhou ◽  
Li Zhang ◽  
Xuan Zhang ◽  
Zhi-Jia Zhu
Keyword(s):  
Aqueous Solution ◽  
Charge Transfer ◽  
Fluorescent Probe ◽  
Near Infrared ◽  
Intramolecular Charge Transfer ◽  
Living Cells ◽  
Selective Detection ◽  
Signaling Mechanism ◽  
Acetyl Group ◽  
Ratiometric Fluorescent Probe

A novel NIR ratiometric fluorescent probe HBT-GSH was developed for the selective detection of GSH over Cys and Hcy in aqueous solution. The signaling mechanism of the GSH-induced removal of an acetyl group and the switching on of ICT fluorescence was proposed.

Intramolecular charge transfer ampholytes with water-induced pendulum-type fluorescence variation

2020 ◽  
Vol 56 (73) ◽  
pp. 10702-10705
Author(s):  
Xiao-Bin Dong ◽  
Ling Chen ◽  
Mei Pan ◽  
Wen-Jie Huang ◽  
Hua Xiang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Colour Change

Tuning the ICT effect and ionizability in the luminophor was effective to realize a cyclic pendulum fluorescence colour change.

A novel rhodamine-based fluorescent probe for selective detection of ClO– and its application in living cell imaging

2018 ◽  
Vol 96 (12) ◽  
pp. 1129-1133
Author(s):  
Changping Yang ◽  
Mingliang Zuo ◽  
Xiaoli Hu ◽  
Xuelin Chen ◽  
Duoduo Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Cell Imaging ◽  
High Selectivity ◽  
Fluorescence Enhancement ◽  
Colour Change ◽  
Living Cells ◽  
Fluorescent Imaging ◽  
Selective Detection ◽  
Living Cell Imaging ◽  
Interfering Ions

A novel fluorescent rhodamine-based probe L for selective responding to ClO– has been synthesized and characterized. The spectroscopy showed that probe L can detect ClO– in aqueous solution without interaction with other interfering ions, and the detection is also evident by the colour change from colourless to reddish purple under white light. The remarkable fluorescence enhancement showed the high selectivity and sensitivity of probe L for the detection of ClO–. Furthermore, probe L was applied to intracellular fluorescent imaging of HeLa cells treated with ClO– and MTT assay showed nontoxicity in living cells.

An efficient ICT based fluorescent turn-on dyad for selective detection of fluoride and carbon dioxide

2016 ◽  
Vol 40 (1) ◽  
pp. 162-170 ◽  
Author(s):  
Rashid Ali ◽  
Syed S. Razi ◽  
Ramesh C. Gupta ◽  
Sushil K. Dwivedi ◽  
Arvind Misra
Keyword(s):  
Carbon Dioxide ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
High Sensitivity ◽  
Selective Detection ◽  
Turn On ◽  
Ratiometric Probe

A new intramolecular charge transfer based fluorescent turn-on ratiometric probe exhibiting high sensitivity for F− and CO2.

Solvatochromism and mechanochromism observed in a triphenylamine derivative

2019 ◽  
Vol 75 (5) ◽  
pp. 839-844
Author(s):  
Chunyang Guo ◽  
Qi Zhang ◽  
Bingqing Zhu ◽  
Bin Zhu ◽  
Weiqun Zhou ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Solid State ◽  
Intramolecular Charge Transfer ◽  
Theoretical Calculations ◽  
Fluorescent Dye ◽  
Fluorescent Properties ◽  
Polar Solvents ◽  
Solid States ◽  
Triphenylamine Derivative

A donor–π–acceptor fluorescent dye, 4-[N,N-di(4-phenyl)amino]benzaldehyde 4-chlorobenzoyl hydrazone (TPA-CBH), based on a triphenylamine derivative (TPA) and 4-chlorobenzoyl hydrazine (CBH) was designed and synthesized. The optical properties of this luminogen were investigated in solutions as well as in the solid states. In the intramolecular charge-transfer (CT) mechanism, TPA-CBH exhibits solvatochromism when dissolved in various polar solvents. Aggregation-induced emission was observed with the changes of tetrahydrofuran/water ratios. In the solid state, mechanochromic fluorescence is observed when the samples are stressed under different conditions. Based on structural analyses and theoretical calculations, it is found that intra- and intermolecular CT processes play a key role in the diversity of fluorescent properties.

Photo-Induced Fluorescence Enhancement of BOPIM–dma in Moderate Polar Solvents

2014 ◽  
Vol 488-489 ◽  
pp. 193-196
Author(s):  
Jin Dong Gong ◽  
Wei Zhang ◽  
Ping Shen ◽  
Ming Xun Yan ◽  
Chang Ying Yang
Keyword(s):  
Charge Transfer ◽  
Uv Irradiation ◽  
Emission Intensity ◽  
Fluorescence Enhancement ◽  
Polar Solvent ◽  
Intramolecular Charge Transfer ◽  
Fluorescence Emission ◽  
Polar Solvents ◽  
Quenching Process ◽  
Fluorescence Emission Intensity

The photo-induced fluorescence enhancement for a BOPIM derivate, which was found weak or no fluorescence in solvents due to twisted intramolecular charge transfer (TICT) was investigated. The quenching process because of TICT state is substantially removed and fluorescence emission intensity increased remarkably, induced by UV-irradiation. This phenomenon could only found in moderate polar solvent, such as CHCl3, THF and 1, 4-dioxane (DIOX), but not in more polarity solvent, such as CH3CN, CH3OH. It is indicated that the transformation from TICT to ICT state take place easily in moderate polar solvents.

Photophysical processes of an intramolecular charge transfer fluorescent dye with carbazole units

Luminescence ◽  
2012 ◽  
Vol 28 (3) ◽  
pp. 412-418 ◽  
Author(s):  
Shouqin Gao ◽  
Liling Hao ◽  
Junfen Li ◽  
Peihua Lin ◽  
Duxin Li ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Fluorescent Dye ◽  
Photophysical Processes
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