Two-stage metal ion sensing by through-space and through-bond charge transfer

2020 ◽  
Vol 8 (40) ◽  
pp. 14028-14036
Author(s):  
Guoxin Yin ◽  
Yu Wang ◽  
Yuping Yuan ◽  
Ruxue Li ◽  
Rui Chen ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transition Metal ◽  
Fluorescent Probe ◽  
Metal Ion ◽  
Transition Metal Ions ◽  
Iron Ion ◽  
Two Stage ◽  
Ion Sensing ◽  
Metal Ion Sensing ◽  
Bond Charge

A highly selective colorimetric and ratiometric “two-stage”/“off–on” type fluorescent probe with an ability to exclude other heavy and transition metal ions has been designed and synthesized for iron ion detection.

scholarly journals Pt(dithiolene)-Based Colorimetric Chemosensors for Multiple Metal-Ion Sensing

2021 ◽  
Vol 13 (15) ◽  
pp. 8160
Author(s):  
Heawon Son ◽  
Seohyeon Jang ◽  
Gayoung Lim ◽  
Taeyong Kim ◽  
Inho Nam ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
Density Functional ◽  
Low Cost ◽  
Density Functional Theory Calculations ◽  
Transition Metal Ions ◽  
Field Analysis ◽  
Ion Sensing ◽  
Metal Ion Sensing

Colorimetric chemosensors are widely employed for in-field analysis to detect transition metal ions in real-time with the naked eye. Colorimetric chemosensors have attracted considerable attention because they can conveniently provide quantitative and qualitative information at a low cost. However, the development of colorimetric chemosensors for multiple-ion sensing where metal cations coexist has been limited. For this reason, we developed a new type of transition metal ion sensing material by selectively replacing functional groups on (diphosphine)Pt(dmit) molecules. The terminal groups of the diphosphine ligand were successfully substituted by the cyclohexyl groups, increasing the electron density of the thione moiety. Due to the electron donation ability of the cyclohexyl terminal groups, the proposed chemosensing material was able to selectively detect the mixture of Hg2+, Cu2+, and Ag+ in the presence of many types of interfering cations. To gain insight into the binding mechanisms between the metal ions and the developed (dchpe)Pt(dmit) molecule, density functional theory calculations were also performed.

scholarly journals Functionalization of Macrobicyclic Amino Cryptands With Photoactive Fluorophoric Units for Metal Ion Sensing Application

2019 ◽  
Vol 9 (1S4) ◽  
pp. 811-814
Keyword(s):  
Transition Metal ◽  
Metal Ion ◽  
Transition Metal Ions ◽  
Ion Sensors ◽  
Ion Sensing ◽  
Metal Ion Sensing ◽  
Photophysical Studies ◽  
Sensing Application ◽  
L1 And L2 ◽  
Metal Ion Sensors

In this report we discussed the photo physical properties of two hexaanthryl substituted cryptands, L1 and L2 respectively. Further, photophysical studies of L1 and L2 with different transition metal ions as an input are carried out to probe these molecules as metal ion sensors in solution.

scholarly journals Hg2+ and Cd2+ binding of a bioinspired hexapeptide with two cysteine units constructed as a minimalistic metal ion sensing fluorescent probe

2019 ◽  
Vol 48 (23) ◽  
pp. 8327-8339 ◽  
Author(s):  
Levente I. Szekeres ◽  
Sára Bálint ◽  
Gábor Galbács ◽  
Ildikó Kálomista ◽  
Tamás Kiss ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Metal Ion ◽  
Cysteine Residues ◽  
Ion Sensing ◽  
Metal Ion Sensing

Efficient and selective Hg2+ binding of a hexapeptide containing two cysteine residues is demonstrated both in solution and immobilized forms.

Evaluation of metal ion sensing behaviour of fluorescent probe along with its precursors: PET-CHEF mechanism, molecular logic gate behaviour and DFT studies

2019 ◽  
Vol 95 (1-2) ◽  
pp. 79-89 ◽  
Author(s):  
Chitra Varadaraju ◽  
Mosae Selvakumar Paulraj ◽  
G. Tamilselvan ◽  
I. V. Muthu Vijayan Enoch ◽  
V. Srinivasadesikan ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Metal Ion ◽  
Logic Gate ◽  
Dft Studies ◽  
Molecular Logic Gate ◽  
Ion Sensing ◽  
Molecular Logic ◽  
Metal Ion Sensing

scholarly journals Optical properties of selected 4d and 5d transition metal ion-doped glasses

RSC Advances ◽  
2017 ◽  
Vol 7 (42) ◽  
pp. 26411-26419 ◽  
Author(s):  
Hongli Wen ◽  
Bing-Ming Cheng ◽  
Peter A. Tanner
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Transition Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
Transition Metal Ions ◽  
Oxidation States ◽  
Transition Metal Ion ◽  
Doped Glasses

Charge transfer emission from transition metal ions in glasses and identification of their oxidation states.

scholarly journals Bend and twist intramolecular charge transfer and emission for selective metal ion sensing

2015 ◽  
Vol 5 (11) ◽  
pp. 2675 ◽  
Author(s):  
John Canning ◽  
Sandra Ast ◽  
Md. Arafat Hossain ◽  
Hazel Chan ◽  
Peter J. Rutledge ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Metal Ion ◽  
Intramolecular Charge Transfer ◽  
Ion Sensing ◽  
Metal Ion Sensing

scholarly journals Metal Ions Sensing by Biodots Prepared from DNA, RNA, and Nucleotides

Biosensors ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 333
Author(s):  
Maofei Wang ◽  
Masaki Tsukamoto ◽  
Vladimir G. Sergeyev ◽  
Anatoly Zinchenko
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Transition Metal Ions ◽  
Guanosine Monophosphate ◽  
Ion Concentration ◽  
Metal Nanostructures ◽  
Fluorescent Nanoparticles ◽  
Paper Strip ◽  
Ion Sensing ◽  
Metal Ion Sensing

Nucleic acids that exhibit a high affinity toward noble and transition metal ions have attracted growing attention in the fields of metal ion sensing, toxic metal ion removal, and the construction of functional metal nanostructures. In this study, fluorescent nanoparticles (biodots) were synthesized from DNA, RNA, and RNA nucleotides (AMP, GMP, UMP, and CMP) using a hydrothermal (HT) method, in order to study their metal ion sensing characteristics. The fluorescent properties of biodots differ markedly between those prepared from purine and pyrimidine nucleobases. All biodots demonstrate a high sensitivity to the presence of mercury cations (Hg2+), while biodots prepared from DNA, RNA, and guanosine monophosphate (GMP) are also sensitive to Ag+ and Cu2+ ions, but to a lesser extent. The obtained results show that biodots inherit the metal ion recognition properties of nucleobases, while the nucleobase composition of biodot precursors affects metal ion sensitivity and selectivity. A linear response of biodot fluorescence to Hg2+ concentration in solution was observed for AMP and GMP biodots in the range 0–250 μM, which can be used for the analytic detection of mercury ion concentration. A facile paper strip test was also developed that allows visual detection of mercury ions in solutions.

One-step synthesis of PCL/Mg Janus micromotor for precious metal ion sensing, removal and recycling

2019 ◽  
Vol 54 (9) ◽  
pp. 7322-7332 ◽  
Author(s):  
Dongmei Zhang ◽  
Dan Wang ◽  
Jieai Li ◽  
Xiaoyi Xu ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Precious Metal ◽  
Metal Ion ◽  
Ion Sensing ◽  
One Step ◽  
Metal Ion Sensing
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