A turn-on AIE active fluorescent sensor for Hg2+ by combination of 1,1-bis(2-pyridyl)ethylene and thiophene/bithiophene fragments

2017 ◽  
Vol 1 (8) ◽  
pp. 1654-1661 ◽  
Author(s):  
Moustafa T. Gabr ◽  
F. Christopher Pigge
Keyword(s):  
Fluorescent Sensor ◽  
Enhanced Fluorescence ◽  
Active Compounds ◽  
Turn On ◽  
Chelation Enhanced Fluorescence

1,1-Bis(2-pyridyl)ethylenes with additional thiophene or bithiophene aryl substituents are AIE active compounds that exhibit selective red-shifted chelation enhanced fluorescence (CHEF) in the presence of Hg2+ ions.

A benzothiazole-based fluorescence turn-on sensor for copper(II)

2021 ◽  
Author(s):  
Gyeongjin Kim ◽  
Donghwan Choi ◽  
Cheal Kim
Keyword(s):  
Charge Transfer ◽  
Limit Of Detection ◽  
Theoretical Calculations ◽  
Enhanced Fluorescence ◽  
Turn On ◽  
Fluorescent Response ◽  
Chelation Enhanced Fluorescence ◽  
Fluorescence Turn On ◽  
Internal Charge Transfer ◽  
Internal Charge

Abstract A new benzothiazole-based chemosensor BTN (1-((Z)-(((E)-3-methylbenzo[d]thiazol-2(3H)-ylidene)hydrazono)methyl)naphthalen-2-ol) was synthesized for the detection of Cu2+. BTN could detect Cu2+ with “off-on” fluorescent response from colorless to yellow irrespective of presence of other cations. Limit of detection for Cu2+ was determined to be 3.3 µM. Binding ratio of BTN and Cu2+ turned out to be a 1:1 with the analysis of Job plot and ESI-MS. Sensing feature of Cu2+ by BTN was explained with theoretical calculations, which might be owing to internal charge transfer and chelation-enhanced fluorescence processes.

Highly selective turn-on fluorogenic chemosensor for Zn2+ based on chelation enhanced fluorescence

2019 ◽  
Vol 102 ◽  
pp. 171-179 ◽  
Author(s):  
Vetriarasu Venkatesan ◽  
Selva Kumar R ◽  
S.K. Ashok Kumar ◽  
Suban K. Sahoo
Keyword(s):  
Enhanced Fluorescence ◽  
Turn On ◽  
Chelation Enhanced Fluorescence

A novel quinolinyl-tetraphenylethene-based fluorescence “turn-on” sensor for Zn2+ with a large Stokes shift and its applications for portable test strips and biological imaging

2020 ◽  
Vol 4 (11) ◽  
pp. 3338-3348
Author(s):  
Jianxing Xu ◽  
Jingwen Xiong ◽  
Yanlin Qin ◽  
Zongzhi Li ◽  
Chengqiang Pan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Stokes Shift ◽  
Biological Imaging ◽  
Enhanced Fluorescence ◽  
Test Strips ◽  
Large Stokes Shift ◽  
Turn On ◽  
Neutral Aqueous Solution ◽  
Chelation Enhanced Fluorescence ◽  
Fluorescence Turn On

A new 8-hydroxyquinoline derivative TPE(OH)-8HQ, has been synthesized and evaluated as an efficient fluorescence “turn-on” sensor for detection of Zn2+ based on the chelation-enhanced fluorescence (CHEF) mechanism in neutral aqueous solution.

A pyridine based Schiff base as a selective and sensitive fluorescent probe for cadmium ions with “turn-on” fluorescence responses

2022 ◽  
Author(s):  
Jialin Ma ◽  
yuwei dong ◽  
Zhou Yu ◽  
Yan Wu ◽  
Zhen Zhao
Keyword(s):  
Schiff Base ◽  
Fluorescent Probe ◽  
Selective Detection ◽  
Enhanced Fluorescence ◽  
Cadmium Ions ◽  
Turn On ◽  
Chelation Enhanced Fluorescence

A new fluorescent probe based on pyridine Schiff base (2-(pyridine-2-ylmethylene)phenoxyaniline, PMPA) working with PET mechanism and chelation enhanced fluorescence (CHEF) was designed and synthesized for the selective detection of cadmium...

A simple coumarin as a turn-on fluorescence sensor for Al(iii) ions

2014 ◽  
Vol 43 (7) ◽  
pp. 2741-2743 ◽  
Author(s):  
Tianrong Li ◽  
Ran Fang ◽  
Baodui Wang ◽  
Yongliang Shao ◽  
Jian Liu ◽  
...  
Keyword(s):  
Fluorescence Sensor ◽  
Enhanced Fluorescence ◽  
Schiff’S Base ◽  
Bold Effect ◽  
Turn On ◽  
Type Molecule ◽  
Chelation Enhanced Fluorescence

A simple non-Schiff's base type molecule serves as a selective chemosensor for Al3+ based on the chelation-enhanced fluorescence (CHEF) effect.

scholarly journals A single point mutation converts a proton-pumping rhodopsin into a red-shifted, turn-on fluorescent sensor for chloride

2021 ◽  
Author(s):  
Jasmine N. Tutol ◽  
Jessica Lee ◽  
Hsichuan Chi ◽  
Farah N. Faizuddin ◽  
Sameera S. Abeyrathna ◽  
...  
Keyword(s):  
Point Mutation ◽  
Fluorescent Sensor ◽  
Single Point ◽  
Proton Pumping ◽  
Single Point Mutation ◽  
Turn On ◽  
Gloeobacter Violaceus

By utilizing laboratory-guided evolution, we have converted the fluorescent proton-pumping rhodopsin GR from Gloeobacter violaceus into GR1, a red-shifted, turn-on fluorescent sensor for chloride.

ChemInform Abstract: A Highly Efficient and Selective Turn-on Fluorescent Sensor for Cu2+ Ion.

ChemInform ◽  
2010 ◽  
Vol 42 (3) ◽  
pp. no-no
Author(s):  
Xuehua Wang ◽  
Jing Cao ◽  
Chuanfeng Chen
Keyword(s):  
Fluorescent Sensor ◽  
Turn On ◽  
Highly Efficient

Photolysis of a calixpyridinium-based supramolecular amphiphilic assembly and its selective turn-on fluorescence recognition of lysine in water

2019 ◽  
Vol 55 (81) ◽  
pp. 12235-12238 ◽  
Author(s):  
Kui Wang ◽  
Hong-Xi Dou ◽  
Meng-Meng Wang ◽  
Yue Wu ◽  
Ze-Hao Zhang ◽  
...  
Keyword(s):  
Fluorescent Sensor ◽  
Turn On ◽  
Recognition Motif

A new calixpyridinium-based light-responsive host–guest recognition motif was found in this work. This host–guest recognition motif was further discovered to be applied as a selective turn-on fluorescent sensor for lysine.

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