Multifunctional dendritic molecular probe for selective detection of Cu2+ ions using potentiometric and fluorometric techniques

The Analyst ◽  
2021 ◽  
Author(s):  
Partha Sarathi Sheet ◽  
Suji Park ◽  
Pavel Sengupta ◽  
Dipankar Koley
Keyword(s):  
Detection Limits ◽  
Molecular Probe ◽  
Selective Detection

We have designed and synthesized a multifunctional dendritic molecular probe that selectively detects Cu2+ ions via potentiometric and fluorometric techniques with low detection limits (3.5 μM in potentiometry, 15 nM in fluorometry).

New molecular probe for the selective detection of zinc ion

The Analyst ◽  
2013 ◽  
Vol 138 (19) ◽  
pp. 5576 ◽  
Author(s):  
Hong Wang ◽  
Chun-Lin Sun ◽  
Yong-Hao Yue ◽  
Fen-Fen Yin ◽  
Jian-Qiao Jiang ◽  
...  
Keyword(s):  
Zinc Ion ◽  
Molecular Probe ◽  
Selective Detection

An electrochemical sensor for highly sensitive detection of copper ions based on a new molecular probe Pi-A decorated on graphene

2017 ◽  
Vol 9 (4) ◽  
pp. 618-624 ◽  
Author(s):  
Liuqing Yang ◽  
Na Huang ◽  
Liyan Huang ◽  
Meiling Liu ◽  
Haitao Li ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
Electrochemical Method ◽  
Copper Ions ◽  
Molecular Probe ◽  
Selective Detection ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Reduced Graphene ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

In this paper, a new electrochemical sensor based on a new fluorescent probe N-(2-(1-(p-tolyl)-1H-phenanthro[9,10-d]imidazol-2-yl)phenyl)picolinamide (Pi-A) decorated reduced graphene oxide (RGO) modified glassy carbon electrode (GCE) was developed for highly selective detection of copper ions using the electrochemical method.

scholarly journals Manipulation of monomer-aggregate transformation of a heptamethine cyanine ligand: near infrared chromogenic recognition of Hg2+

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 32732-32736
Author(s):  
Xia Gao ◽  
Weidong Wu ◽  
Jinyan Xi ◽  
Hong Zheng
Keyword(s):  
Aqueous Solutions ◽  
Metal Ions ◽  
Near Infrared ◽  
Cyanine Dye ◽  
Molecular Probe ◽  
Selective Detection

A novel near infrared optical molecular probe (CyL) derived from heptamethine cyanine dye was developed for the selective detection of Hg2+ over other metal ions in aqueous solutions.

scholarly journals AIE-active Schiff base compounds as fluorescent probes for the highly sensitive and selective detection of Fe3+ ions

2020 ◽  
Vol 4 (5) ◽  
pp. 1471-1482 ◽  
Author(s):  
Jonnagaddala Harathi ◽  
Kathavarayan Thenmozhi
Keyword(s):  
Schiff Base ◽  
Fluorescent Probes ◽  
Photophysical Properties ◽  
Detection Limits ◽  
Association Constants ◽  
Selective Detection ◽  
High Association ◽  
Highly Sensitive ◽  
Enhanced Selectivity

AIE-active Schiff base compounds were synthesized and photophysical properties were investigated. The compounds exhibited prominent sensing behaviour towards Fe3+ ion with enhanced selectivity, high association constants and low detection limits.

scholarly journals Development of Fluorescent Reagent Based on Ligand Exchange Reaction for the Highly Sensitive and Selective Detection of Dopamine in the Serum

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3928 ◽  
Author(s):  
Yoshio Suzuki
Keyword(s):  
Fluorescence Intensity ◽  
Ligand Exchange ◽  
Fluorescence Emission ◽  
Molecular Probe ◽  
Free Form ◽  
Selective Detection ◽  
The Novel ◽  
Ligand Exchange Reaction ◽  
Exchange Site ◽  
Highly Sensitive

A new fluorescent probe (BDP-Fe2+) was developed for targeting dopamine, with a boron–dipyrromethenyl (BDP) group as the fluorophore and a Fe2+ complex as the ligand exchange site. The free form of BDP-Fe2+ in solution displayed weak fluorescence emission, while it showed strong fluorescence emission after interaction with dopamine due to the release of Fe2+ from BDP-Fe2+, confirming the binding of Fe2+ to dopamine. The increase in fluorescence intensity was concentration-dependent, and a good linear relationship was observed between the fluorescence intensity and dopamine concentration. The detection limit of dopamine by BDP-Fe2+ was 1.1 nM, indicating a 20-fold higher sensitivity than that of previously reported compounds. The reaction of BDP-Fe2+ with dopamine was not affected by the presence of foreign substances, allowing the highly selective detection of dopamine in the human serum sample. The results of this study indicate that the novel compound BDP-Fe2+ is a reliable fluorescent molecular probe for the detection of dopamine and can be widely employed in diverse scientific areas.

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