A rhodamine-based Hg2+-selective fluorescent probe in aqueous solution

2009 ◽  
Vol 63 (3) ◽  
Author(s):  
Minglei Zhao ◽  
Xiao-Feng Yang ◽  
Shenfeng He ◽  
Liping Wang
Keyword(s):  
Aqueous Solution ◽  
Detection Limit ◽  
Transition Metal ◽  
Fluorescent Probe ◽  
Fluorescence Emission ◽  
Transition Metal Ions ◽  
Fluorescent Product ◽  
Compound I ◽  
Strong Fluorescence ◽  
Fluorogenic Probe

AbstractA new rhodamine-based Hg2+-selective fluorescent probe (I) was designed and synthesized. Compound I displays excellent selective and sensitive response to Hg2+ over other transition metal ions in neutral aqueous solutions. I itself is a colorless, nonfluorescent compound. Upon addition of Hg2+ to its solution, the thiosemicarbazide moiety of I undergoes an irreversible desulfurization reaction to form the corresponding 1,3,4-oxadiazole (II), a colorful and fluorescent product, causing instantaneous development of visible color and strong fluorescence emission. Based on this mechanism, a fluorogenic probe for Hg2+ was developed. The fluorescence increases linearly with the Hg2+ concentration up to 0.8 μmol L−1 with the detection limit of 9.4 nmol L− (3σ).

Colorimetric and Fluorescent Probe for Hypochlorite with High Selectivity

2013 ◽  
Vol 295-298 ◽  
pp. 475-478 ◽  
Author(s):  
Zhi Xiang Han ◽  
Ming Hui Du ◽  
Guo Xi Liang ◽  
Xiang Yang Wu
Keyword(s):  
Reactive Oxygen Species ◽  
Aqueous Solution ◽  
Detection Limit ◽  
Fluorescent Probe ◽  
Rhodamine B ◽  
High Selectivity ◽  
Reactive Oxygen ◽  
Living Cells ◽  
Oxygen Species ◽  
Turn On

Rhodamine B thiohydrazide (RBS) was firstly employed as turn-on fluorescent probe for hypochlorite in aqueous solution and living cells. It exhibits a stable response to hypochlorite from 1.0×10-6to 1.0×10-5M with a detection limit of 3.3×10-7M. The response of this probe to hypochlorite is fast and highly selective compared with other reactive oxygen species (such as.OH,1O2, H2O2) and other common anions (such as X-, ClO2-, ClO4-, NO3-, NO2-, OH-, Ac-, CO32-, SO42-).

Complexation of o-phenylenediaminetetraacetic acid with some bivalent first-row transition-metal ions in aqueous solution

1985 ◽  
Vol 24 (1) ◽  
pp. 10-15 ◽  
Author(s):  
Noriyuki Nakasuka ◽  
Mihoko Kunimatsu ◽  
Kazunori Matsumura ◽  
Motoharu Tanaka
Keyword(s):  
Aqueous Solution ◽  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions

A Highly Selective and Sensitive Fluorescent Probe Based on Quinolone Derivative for Hg2+ in Aqueous Solution

2012 ◽  
Vol 549 ◽  
pp. 229-233
Author(s):  
Juan Juan Tian ◽  
Xin Zhou ◽  
Hui Juan Hao ◽  
Xue Wu
Keyword(s):  
Aqueous Solution ◽  
Fluorescent Probe ◽  
Limit Of Detection ◽  
Transition Metal Ions ◽  
Quinoline Derivative ◽  
Ligand Complex ◽  
Quinolone Derivative ◽  
Ph Range ◽  
Metal Ligand ◽  
Tof Ms

A new fluorescent probe, quinoline derivative DPQ bearing a methyl pyrrolidine-1-carbodithioate group, was synthesized and characterized by IR, Tof-MS and NMR. Its fluorescent behaviors toward transition metal ions were investigated. The results indicate that DPQ shows unique selective and high sensitive for Hg2+ in aqueous solution with a broad pH range 4-10. DPQ forms a 1:2 metal-ligand complex with Hg2+ ions with a limit of detection as low as 1.7×10-6 mol/L.

Photoactive pyrene-containing receptors for transition-metal ions

2001 ◽  
Vol 73 (3) ◽  
pp. 411-414 ◽  
Author(s):  
Frédéric Fages ◽  
Stéphanie Leroy ◽  
Tirapattur Soujanya ◽  
Jean-Ernest Sohna Sohna
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Photophysical Properties ◽  
Fluorescence Emission ◽  
Transition Metal Ions ◽  
Molecular Receptors

Photoresponsive molecular receptors based on the photophysical properties of the pyrene chromophore were designed to exhibit tunable fluorescence emission upon binding of transition-metal ions.

A bis-benzimidazole-derived N, S macrocycle as sensor for transition metal ions in aqueous solution

2001 ◽  
Vol 350 (3-4) ◽  
pp. 240-246 ◽  
Author(s):  
Mercedes Álvaro ◽  
Hermenegildo Garcı́a ◽  
Emilio Palomares ◽  
Redouane Achour ◽  
Ahmed Moussaif ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions

Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+

2018 ◽  
Vol 317 (1) ◽  
pp. 215-225 ◽  
Author(s):  
Radmila V. Hercigonja ◽  
Sanja D. Vranješ-Djurić ◽  
Marija D. Mirković ◽  
Bojana M. Marković ◽  
Danijela D. Maksin ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions

Differential Photosensor Activities for the L-Cysteine and L-Serine Capped ZnS:Mn Nanocrystals in the Detection of Divalent Transition Metal Ions in Aqueous Solution

2020 ◽  
Vol 20 (11) ◽  
pp. 6723-6731
Author(s):  
Mi Choi ◽  
Cheong-Soo Hwang
Keyword(s):  
Aqueous Solution ◽  
Particle Size ◽  
Transition Metal ◽  
Metal Ions ◽  
Average Particle Size ◽  
Transition Metal Ions ◽  
Average Particle ◽  
Quenching Effect ◽  
Transmission Electron ◽  
Particle Size Analyzer

Colloidal ZnS:Mn nanocrystals (NCs) were synthesized in water by capping the NC surface with conventional amino acids: L-cysteine (Cys) and L-serine (Ser) molecules, which have very similar structures but different terminal functional groups. The optical properties were investigated by using UV-Visible and photoluminescence (PL) spectroscopy. The PL spectra for both ZnS:Mn-Cys and ZnS:Mn-Ser NCs showed broad emission peaks at 590 nm. The measured average particle size from the high-resolution transmission electron microscopy (HR-TEM) images were 4.38 nm (ZnS:Mn-Cys) and 5.57 nm (ZnS:Mn-Ser), which were also supported by Debye-Scherrer calculations. In addition, the surface charge of the NCs in aqueous solutions were measured using zeta-particle size analyzer spectroscopy, which showed formation of negatively charged surface for the ZnS:Mn-Cys (−43.93 mV) and ZnS:Mn-Ser (−8.21 mV) NCs in water. In this present study those negatively charged NCs were applied as photosensors for the detection of specific divalent transition metal cations in aqueous solution at the same condition. Consequently, the ZnS:Mn-Cys and ZnS:Mn-Ser NCs showed totally different photosensor activities upon the addition of first-row divalent transition metal ions. The former NCs showed luminescence quenching for most added metal ions except for Zn (II) ions; whereas the latter NCs showed exclusive quenching effect for Cu (II) ions at the same conditions. These results suggested that those NCs can be applied as Zn2+ and Cu2+ ion sensors in water.

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