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Chen S.,Central South University | Hou P.,Central South University | Zhou B.,CAS Technical Institute of Physics and Chemistry | Song X.,Central South University | And 5 more authors.
RSC Advances | Year: 2013

A novel red (λmaxem = 632 nm) fluorescent probe based on 3-hydroxyflavone was designed and synthesized for thiol recognition with high sensitivity and excellent selectivity. Application of the probe for selective detection of intracellular thiols has been successfully demonstrated. © The Royal Society of Chemistry 2013. Source


Hou P.,Central South University | Chen S.,Central South University | Voitchovsky K.,Central South University | Song X.,Central South University | And 2 more authors.
Luminescence | Year: 2014

A colorimetric and ratiometric fluorescent sulfite probe, the levulinate of 4-hydroxynaphthalimide, was successfully synthesized from 4-hydroxy-naphthalimide and levulinic acid. Through sul fite-mediated intramolecular cleavage, the probe was converted into 4-hydroxynaphthalimide, which when excited at 450 nm, displayed a large Stokes shift due to the intramolecular charge transfer process. The probe exhibited high selectivity and sensitivity towards sulfite over other typical anionic species (F-, Cl-, Br-, I-,HPO4 2-,SO4 2-, NO3 -, AcO-,ClO4 -,HCO3 -) in HEPES-buffered solution (25 mM, pH 7.4, 50% acetonitrile, v/v). Copyright © 2013 John Wiley & Sons, Ltd. Source


Hou P.,Central South University | Chen S.,Central South University | Wang H.,Central South University | Wang J.,Central South University | And 4 more authors.
Chemical Communications | Year: 2014

A novel red emitting fluorescent probe exhibiting a 143 nm Stokes shift for the detection of fluoride ions in an aqueous solution was developed. The probe displays a rapid response, high selectivity and good sensitivity towards F -. Application of the probe for the selective detection of intracellular F- has been successfully demonstrated in living cells. © 2013 The Royal Society of Chemistry. Source


Hou P.,Central South University | Chen S.,Central South University | Song X.,Central South University | Song X.,Key Laboratory of Resource Chemistry of Nonferrous Metals | Song X.,State Key Laboratory for Powder Metallurgy
Luminescence | Year: 2014

A colorimetric and turn-on fluorescent probe for fluoride ions, tert-butyldimethylsilane 6-acetyl-2-naphtholate, was readily synthesized from 6-acetyl-2-naphthol and tert-butyldimethylchlorosilane (TBSCl). The probe exhibits high sensitivity and good selectivity for fluoride ions in acetonitrile. The inherent mechanism involves the cleavage of the Si-O bond in the probe, which induced yellow color formation and prominent fluorescence enhancement. Copyright © 2013 John Wiley & Sons, Ltd. Source


Chen S.,Central South University | Chen S.,Key Laboratory of Resource Chemistry of Nonferrous Metals | Hou P.,Central South University | Hou P.,Key Laboratory of Resource Chemistry of Nonferrous Metals | And 5 more authors.
RSC Advances | Year: 2012

The levulinate ester of 2-(benzothiazol-2-yl)phenol, 1, has been developed as a ratiometric fluorescent probe for identifying and quantitating sulfite anions. The mechanism of action is based on the sulfite-triggered intramolecular cleavage of the levulinate moiety to give 1 which, when excited with 310 nm light, decays to its ground state via an excited state intramolecular proton transfer (ESIPT) mediated pathway. We show that the intensity of the ESIPT fluorescent signal relative to that of 1 is proportional to sulfite concentration. This new probe shows good selectivity and high sensitivity for sulfite over other typically encountered anions (F-, Cl-, Br-, I-, HPO4 2-, SO4 2-, NO3 -, AcO-, ClO4 -, N3 -, HCO3 -) when measured in CH3CN/H2O (50:50, v/v) solution. © 2012 The Royal Society of Chemistry. Source

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