Fluorescence turn-on detection of cysteine over homocysteine and glutathione based on “ESIPT” and “AIE”

2015 ◽  
Vol 7 (12) ◽  
pp. 5028-5033 ◽  
Author(s):  
Hualong Liu ◽  
Xiaoyan Wang ◽  
Yu Xiang ◽  
Aijun Tong
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Aggregation Induced Emission ◽  
Emission Properties ◽  
Turn On ◽  
Fluorescence Turn On

A turn-on detection of cysteine (Cys) based on excited-state intramolecular proton transfer and aggregation-induced emission properties of a salicylaldehyde azine derivative has been established.

A reactive probe for Cu2+ based on the ESIPT mechanism and its application in live-cell imaging

2015 ◽  
Vol 7 (8) ◽  
pp. 3327-3330 ◽  
Author(s):  
Chengyu Yang ◽  
Yu Chen ◽  
Kai Wu ◽  
Tin Wei ◽  
Jinglu Wang ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Intramolecular Proton Transfer ◽  
Live Cell ◽  
Sensitive Detection ◽  
Hydrolysis Reaction ◽  
Turn On ◽  
Fluorescence Turn On

A new excited-state intramolecular proton transfer (ESIPT) based fluorescence “turn-on” chemodosimeter for selective and sensitive detection of Cu2+ by the copper-induced hydrolysis reaction has been reported.

scholarly journals Nitrile-Substituted 2-(Oxazolinyl)-Phenols: Minimalistic Excited-State Intramolecular Proton Transfer (ESIPT)-Based Fluorophores

2020 ◽  
Author(s):  
Dominik Göbel ◽  
Daniel Duvinage ◽  
Tim Stauch ◽  
Boris Nachtsheim
Keyword(s):  
Excited State ◽  
Solid State ◽  
Proton Transfer ◽  
Density Functional ◽  
Intramolecular Proton Transfer ◽  
Crystal Structure Analysis ◽  
Quantum Yields ◽  
Functional Theory ◽  
Emission Properties ◽  
Emission Enhancement

Herein, we present minimalistic single-benzene, excited-state intramolecular proton transfer (ESIPT) based fluorophores as powerful solid state emitters. The very simple synthesis gave access to all four regioisomers of nitrile-substituted 2(oxazolinyl)phenols (MW = 216.1). In respect of their emission properties they can be divided into aggregation-induced emission enhancement (AIEE) luminophores (1-CN and 2-CN), dual state emission (DSE) emitters (3-CN) and aggregation-caused quenching (ACQ) fluorophores (4‐CN). Remarkably, with compound 1-CN we discovered a minimalistic ESIPT based fluorophore with extremely high quantum yield in the solid state ΦF = 87.3% at λem = 491 nm. Furthermore, quantum yields in solution were determined up to ΦF = 63.0%, combined with Stokes shifts up till 11.300 cm–1. Temperature dependent emission mapping, crystal structure analysis and time-dependent density functional theory (TDDFT) calculations gave deep insight into the origin of the emission properties.<br>

Excited state proton transfer (ESIPT) based molecular probe to sense F− and CN− anions through a fluorescence “turn-on” response

2018 ◽  
Vol 42 (14) ◽  
pp. 11746-11754 ◽  
Author(s):  
Rashid Ali ◽  
Ramesh C. Gupta ◽  
Sushil K. Dwivedi ◽  
Arvind Misra
Keyword(s):  
Schiff Base ◽  
Excited State ◽  
Proton Transfer ◽  
Molecular Probe ◽  
Anion Sensing ◽  
Turn On ◽  
Excited State Proton Transfer ◽  
Fluorescence Turn On

Dual anion sensing through an efficient thiazole based phenolic Schiff base containing molecular probe by means of fluorescence “turn-on” response.

scholarly journals A selective NIR-emitting zinc sensor by using Schiff base binding to turn-on excited-state intramolecular proton transfer

2014 ◽  
Vol 2 (14) ◽  
pp. 2008 ◽  
Author(s):  
Junfeng Wang ◽  
Yingbo Li ◽  
Ernest Duah ◽  
Sailaja Paruchuri ◽  
Demin Zhou ◽  
...  
Keyword(s):  
Schiff Base ◽  
Excited State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Zinc Sensor ◽  
Turn On

scholarly journals Excited-state intramolecular proton transfer in a bioactive flavonoid provides fluorescence observables for recognizing its engagement with target proteins

2019 ◽  
Vol 18 (9) ◽  
pp. 2270-2280 ◽  
Author(s):  
Davide Vanossi ◽  
Monica Caselli ◽  
Giorgia Pavesi ◽  
Chiara Borsari ◽  
Pasquale Linciano ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Excited State ◽  
Proton Transfer ◽  
Bond Formation ◽  
Intermolecular Hydrogen Bond ◽  
Intramolecular Proton Transfer ◽  
Hydrogen Bond Formation ◽  
Target Proteins ◽  
Emission Properties

Intra- vs. intermolecular hydrogen-bond formation and ESIPT in a bioactive flavonoid result in different emission properties and provide a clue for recognizing its binding to target proteins.

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