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Lv Y.,University of Sichuan | Lv Y.,Sichuan Provincial Universities
Asian Journal of Chemistry | Year: 2015

A novel yellow-green fluorescent BODIPY dye (1) was synthesized and its fluorescence properties were investigated in various surfactant solutions, including myristyltrimethylammonium bromide, sodium dodecylbenzenesulphonate, sodium dodecylsulfate and triton X-100. The results show that BODIPY dye (1) displays an obvious fluorescence sensitizing effect in the presence of myristyltrimethylammonium bromide, which can be attributed to the entrance of 1 into myristyltrimethylammonium bromide micelle. Furthermore, there is a good linear relationship between fluorescence intensity and myristyltrimethylammonium bromide concentration in the range of 0-2.1 × 10-3mol/L, with the association constant of 3.71 × 104. © 2014, Chemical Publishing Co. All rights reserved.

Lv Y.,University of Sichuan | Lv Y.,Sichuan Provincial Universities
Quimica Nova | Year: 2015

A novel Fe3+-selective and turn-on fluorescent probe 1 incorporating a rhodamine fluorophore and quinoline subunit was synthesized. Probe 1 displayed high selectivity for Fe3+ in CH3CN-H2O (95:5 v/v) in the presence of other relevant metal cations. Interaction with Fe3+ in 1:1 stoichiometry could trigger a significant fluorescence enhancement due to the formation of the ring-open form. The fluorescent response images were investigated by a novel Euclidean distance method based on red, green, and blue values. A linear relationship was observed between fluorescence intensity changes and Fe3+ concentrations from 7.3 × 10-7 to 3.6 × 10-5 mol L-1.

Huang T.-H.,Sichuan Provincial Universities | Yan J.,Sichuan Provincial Universities | Yang H.,Sichuan Provincial Universities | Qiang L.,Southwest University for Nationalities | Du H.-M.,Sichuan Provincial Universities
Journal of Molecular Structure | Year: 2015

Abstract Two mixed-ligand Ag (I) complexes, [Ag2(Phterpy)2(NO3)2(dppe)]·CH3CN (1) and [Ag4(Phterpy)2(NO3)2(dppp)2](NO3)2·6H2O (2) (dppe = 1, 2-bis (diphenylphosphino) ethane, dppp = 1, 3-bis (diphenylphosphino) propane, Phterpy = 4'-phenyl-2, 2':6', 2"-terpyridine), have been synthesized and structurally characterized by IR, 1H-NMR, 31P-NMR, elemental analysis and X-ray crystal structure analysis. Structural analysis reveals that the change of bridging ligands from dppe to dppp lead to the formation of centrosymmetric cations [Ag2(Phterpy)2(NO3)2(dppe)] and [Ag4(Phterpy)2 (NO3)2(dppp)2]2+, especially complex 2 containing two independent centrosymmetric tetramers with the central (obligate) Ag2O2 planes. Complexes 1 and 2 consist of the 1D infinite chains, with different variations in π-stacking patterns. Crystal structure of 1 contains 1D infinite chains constructed by π⋯π interactions between Phterpy, while 2 is built by π⋯π interaction of phenylene rings from dppp. All these reveal that the change of phosphine ligands might be the key of construction of different types of polynuclear structures and 1D π-stacking chain. Moreover, the solid-state emission spectra of complexes 1 and 2 display broad emission bands at 420-600 nm. © 2015 Elsevier B.V.

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