scholarly journals Benzothiazolylhydrazone-Based Turn-on Fluorescent Probe for Detecting Cu2+: S-donor as a Cu2+-induced Fluorescence Quenching Inhibitor

2021 ◽  
Vol 68 (3) ◽  
pp. 562-566
Author(s):  
Qiao Li ◽  
Yang Zhao ◽  
Enju Wang
Keyword(s):  
Public Health ◽  
Excited State ◽  
Fluorescent Probe ◽  
Fluorescence Enhancement ◽  
Delayed Fluorescence ◽  
Environmental Security ◽  
Gradual Transition ◽  
Response Delay ◽  
New Approach ◽  
Turn On

The fluorescent turn-on detection of metal ions is highly desirable for public health and environmental security. Herein, we report a rationally designed fluorescent probe (1) for the detection of Cu2+ synthesized by integrating 2-hydrazinylbenzothiazole with 3-acetyl-7-hydroxycoumarin. The probe alone is non-fluorescent due to the isomerization of C=N in the excited state. The addition of Cu2+ can cause a delayed fluorescence enhancement. A comparative study of 1 and its analogues indicated that the turn-on fluorescence response was thanks to the sulfur atom coordinating to Cu2+. The response delay of 1 in sensing Cu2+ was ascribed to the gradual transition from N-coordination to S-coordination (N and S in thiazole moiety). The proposed new function of S-donor would provide a new approach for the turn-on fluorescence sensation of Cu2+.

A highly selective turn-on fluorescent sensor for fluoride and its application in imaging of living cells

2014 ◽  
Vol 38 (12) ◽  
pp. 6198-6204 ◽  
Author(s):  
Jiun-Ting Yeh ◽  
Parthiban Venkatesan ◽  
Shu-Pao Wu
Keyword(s):  
Fluorescent Probe ◽  
Fluorescence Enhancement ◽  
Fluorescent Sensor ◽  
Living Cells ◽  
Green Fluorescence ◽  
Turn On ◽  
Highly Sensitive

A highly sensitive and selective fluorescent probe (FS) is based on a fluoride-specific desilylation reaction to yield a significant green fluorescence enhancement.

A new turn-on fluorescent probe towards hypochlorite in living cells

2017 ◽  
Vol 9 (5) ◽  
pp. 864-870 ◽  
Author(s):  
Jing Guo ◽  
Zhixiang Zhang ◽  
Ziyu Kuai ◽  
Rui Wang ◽  
Qingbiao Yang ◽  
...  
Keyword(s):  
Excited State ◽  
Fluorescent Probe ◽  
Fluorescent Sensor ◽  
Living Cells ◽  
Turn On ◽  
First Excited State

A novel turn-on fluorescent sensor PIPH based on changes in the internal conformation between the ground and first excited state.

scholarly journals A new 3-hydroxyphthalimide-based turn-on fluorescent probe for Hg2+ detection in aqueous solution

2020 ◽  
Vol 44 (5-6) ◽  
pp. 349-353
Author(s):  
Xue-Tao Pan ◽  
Qiao Li ◽  
Yuan-Yuan Xu ◽  
Sheng-Li Hu
Keyword(s):  
Aqueous Solution ◽  
Excited State ◽  
Detection Limit ◽  
Fluorescent Probe ◽  
High Selectivity ◽  
Intramolecular Proton Transfer ◽  
Recognition Mechanism ◽  
Turn On ◽  
Transfer Mechanisms ◽  
Analytical Detection

A new 3-hydroxyphthalimide-based turn-on fluorescent probe is designed and synthesized. This probe can be used to determine the presence of Hg2+ ions by fluorescence spectroscope with high selectivity over other metal ions in aqueous solution. The analytical detection limit for Hg2+ is as low as 6.5 × 10−7 M. The recognition mechanism is attributed to Hg2+-promoted carbonothioate group cleavage and a subsequent excited-state intramolecular proton transfer mechanisms.

A highly selective and sensitive fluorescent probe for thiols based on a benzothiazole derivative

2016 ◽  
Vol 8 (38) ◽  
pp. 6832-6839 ◽  
Author(s):  
Suxiang Feng ◽  
Xian li ◽  
Qiujuan Ma ◽  
Beibei Liang ◽  
Zhuoyi Ma
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Fluorescent Probe ◽  
Intramolecular Proton Transfer ◽  
Benzothiazole Derivative ◽  
Turn On

In this work, a selective turn-on fluorescent probe1for detecting biological thiols was designed and synthesized based on modulation of the excited-state intramolecular proton transfer (ESIPT) process of 2-(2′-hydroxy-4′-diethylaminophenyl)benzothiazole.

A Boronic Acid-Based Fluorescence Hydrogel for Monosaccharide Detection

2018 ◽  
Author(s):  
Suying Xu ◽  
Adam Sedgwick ◽  
Souad Elfecky ◽  
Wenbo Chen ◽  
Ashley Jones ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Boronic Acid ◽  
Binding Constants ◽  
Strong Fluorescence ◽  
Fluorescence Response ◽  
Turn On ◽  
Fluorescence Turn On ◽  
Hydrogel System

<p>A boronic acid-based anthracene fluorescent probe was functionalised with an acrylamide unit to incorporate into a hydrogel system for monosaccharide detection<i>. </i>In solution, the fluorescent probe<b> </b>displayed a strong fluorescence turn-on response upon exposure to fructose, and an expected trend in apparent binding constants, as judged by a fluorescence response where D-fructose > D-galactose > D-mannose > D-glucose. The hydrogel incorporating the boronic acid monomer demonstrated the ability to detect monosaccharides by fluorescence with the same overall trend as the monomer in solution with the addition of fructose resulting in a 10-fold enhancement (≤ 0.25 M). <b><u></u></b></p>

Highly selective turn-on fluorescent probe for detection of cyanide in water and food materials

2019 ◽  
Vol 7 (2) ◽  
pp. 025003 ◽  
Author(s):  
Govindaraj Mahalakshmi ◽  
Paramasivam SaravanaKumar ◽  
Pandi RajaLakshmi ◽  
Muthu Seenivasaperumal ◽  
Kuppanagounder P Elango
Keyword(s):  
Fluorescent Probe ◽  
Turn On

A phenanthrene[9,10-d]imidazole-phenol-based fluorescent probe combined ESIPT and AIE for “turn-on” detection of Cu2+ with a green-emitting and improved stokes shift and its application

2021 ◽  
Author(s):  
Jiahui Du ◽  
Bing Zhao ◽  
Wei Kan ◽  
Haochun Yin ◽  
Tianshu Song ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Stokes Shift ◽  
Fluorescent Sensors ◽  
Turn On ◽  
Highly Sensitive

Development of highly sensitive and selective fluorescent sensors toward Cu2+ has gained considerable attention in view of its application of environmental and biological fields. However, the strategy of sensing by...

A matrix targeted fluorescent probe to monitor mitochondrial dynamics

2021 ◽  
Author(s):  
Madhu Ramesh ◽  
Kolla Rajasekhar ◽  
Kavya Gupta ◽  
Vardhaman Babagond ◽  
Deepak Kumar Saini ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Chemical Stability ◽  
Mitochondrial Dynamics ◽  
Mitochondrial Matrix ◽  
Turn On

A far-red turn-on fluorescent probe (Mito-TG) with excellent biocompatibility, photostability, chemical stability targets mitochondrial matrix. The insensitivity of probe under different pH and ROS enabled tracking of mitophagy and Aβ induced mitochondrial dynamics.

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