Key Laboratory of Resource Chemistry of Nonferrous Metals

Hunan, China

Key Laboratory of Resource Chemistry of Nonferrous Metals

Hunan, China

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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 3 more authors.
RSC Advances | Year: 2013

The ester derived from picolinic acid and 4-hydroxynaphthalimide has been developed as a colorimetric and ratiometric fluorescent probe for the detection of Cu2+. Upon exposure to Cu2+ in a buffered solution, the probe displays a large red shift both in its absorption (110 nm) and emission (143 nm) spectra. This novel probe has a high sensitivity and an excellent selectivity for Cu2+ ions over competing metal ions (K+, Na+, Zn2+, Ni2+, Mn2+, Mg 2+, Ca2+, Hg2+, Cd2+, Pb 2+, Fe2+, Co2+, Ba2+, Ag+ and Fe3+). Most importantly, this new picolinate probe can successfully detect Cu2+ in living cells. © 2013 The Royal Society of Chemistry.


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.


Liu X.,Central South University | Yang D.,Central South University | Chen W.,Central South University | Yang L.,Central South University | And 4 more authors.
Sensors and Actuators, B: Chemical | Year: 2016

A red-emitting fluorescent probe for selective detection of cysteine was developed based on the conjugated addition/cyclization sequence mechanism. Upon the treatment with cysteine, this probe exhibits a strong fluorescence enhancement (62-fold) and a large Stokes shift (148 nm). The detection limit was calculated to be as low as 6.6 nM based on S/N = 3. Importantly, the practical application of this probe for the selective detection of cysteine was successfully demonstrated in living cells. © 2016 Published by Elsevier B.V.


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.


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.


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.


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.


Lv K.,Key Laboratory of Resource Chemistry of Nonferrous Metals | Lv K.,Central South University | Li J.,Key Laboratory of Resource Chemistry of Nonferrous Metals | Li J.,Central South University | And 6 more authors.
Journal of Hazardous Materials | Year: 2011

A WO3/TiO2 composite, hollow-sphere photocatalyst with average diameter of 320nm and shell thickness of 50nm was successfully prepared using a template method. UV-vis diffuse reflectance spectra illustrated that the main absorption edges of the WO3/TiO2 hollow spheres were red-shifted compared to the TiO2 hollow spheres, indicating an extension of light absorption into the visible region of the composite photocatalyst. The WO3 and TiO2 phases were confirmed by X-ray diffraction analysis. BET isotherms revealed that the specific surface area and average pore diameter of the hollow spheres were 40.95m2/g and 19nm, respectively. Photocatalytic experiments indicate that 78% MB was degraded by WO3/TiO2 hollow spheres under visible light within 80min. Under the same conditions, only 24% MB can be photodegraded by TiO2. The photocatalytic mineralization of MB, catalyzed by TiO2 and WO3/TiO2, proceeded at a significantly higher rate under UV irradiation than that under visible light, and more significant was the increase in the apparent rate constant with the WO3/TiO2 composite semiconductor material which was 3.2- and 3.5-fold higher than with the TiO2 material under both UV and visible light irradiation. The increased photocatalytic activity of the coupled nanocomposites was attributed to photoelectron/hole separation efficiency and the extension of the wavelength range of photoexcitation. © 2011 Elsevier B.V.

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