Discriminating Chemosensor for Detection of Fe3+ in Aqueous Media by Fluorescence Quenching Methodology

2018 ◽  
Vol 39 (5) ◽  
pp. 631-637 ◽  
Author(s):  
Balasaheb D. Vanjare ◽  
Prasad G. Mahajan ◽  
Seong-Karp Hong ◽  
Ki Hwan Lee
Keyword(s):  
Fluorescence Quenching ◽  
Aqueous Media

Fluorescence quenching of a rhodamine derivative: Selectively sensing Cu2+ in acidic aqueous media

2012 ◽  
Vol 132 (8) ◽  
pp. 1987-1993 ◽  
Author(s):  
Jihua Ding ◽  
Lidi Yuan ◽  
Ling Gao ◽  
Jingwen Chen
Keyword(s):  
Fluorescence Quenching ◽  
Aqueous Media ◽  
Rhodamine Derivative

A highly selective fluorescent chemosensor based on naphthalimide and Schiff base units for Cu2+ detection in aqueous medium

2017 ◽  
Vol 72 (1) ◽  
pp. 35-41 ◽  
Author(s):  
Yuling Xu ◽  
Stephen Opeyemi Aderinto ◽  
Huilu Wu ◽  
Hongping Peng ◽  
Han Zhang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Fluorescence Quenching ◽  
Aqueous Medium ◽  
High Selectivity ◽  
Photophysical Properties ◽  
Aqueous Media ◽  
Medium Ph ◽  
Absorption And Fluorescence Spectroscopy ◽  
High Fluorescence ◽  
Base Units

AbstractA new Schiff base, 4-allylamine-N-(N-5-methylsalicylidene)-1,8-naphthalimide (1), has been designed and synthesized by combining a 1,8-naphthalimide moiety as a fluorophore and a Schiff base as a recognition group. Its photophysical properties were investigated by absorption and fluorescence spectroscopy, and this sensor exhibits a high fluorescence quantum yield of 0.75–0.91 inorganic solvents of different polarity. It also shows high selectivity for Cu2+ over other ions with fluorescence quenching in aqueous medium (pH=7.2). The reason for this phenomenon (fluorescence quenching) is attributed to the formation of a 1:1 complex between 1 and Cu2+ according to the Job plot and fluorescence titration. The sensor can be applied to the quantification of Cu2+ in a linear fashion from 0.5 to 5 μM with a detection limit of 0.23 μM. Additionally, the association constant (Ka) between Cu2+ and 1 is 1.328×106 M−1 in aqueous media.

Silica cross-linked nanoparticles encapsulating a phenothiazine-derived Schiff base for selective detection of Fe(iii) in aqueous media

2014 ◽  
Vol 2 (37) ◽  
pp. 6306-6312 ◽  
Author(s):  
Fangyuan Gai ◽  
Xiang Li ◽  
Tianlei Zhou ◽  
Xiaogang Zhao ◽  
Dongdong Lu ◽  
...  
Keyword(s):  
Schiff Base ◽  
Fluorescence Quenching ◽  
Aqueous Media ◽  
Selective Detection ◽  
Selective Determination ◽  
Design And Synthesis ◽  
Micellar Nanoparticles

This work demonstrates the design and synthesis of an ET-based fluorescence quenching chemosensor using silica cross-linked micellar nanoparticles as scaffolds to encapsulate EDDP for highly selective determination of Fe3+ in aqueous media.

scholarly journals Amphiphilic Copolymers Consisting of Vinylphenanthrene and Cationic Segments. Fluorescence Quenching by Amphiphilic Quenchers in Aqueous Media

1982 ◽  
Vol 14 (11) ◽  
pp. 861-868 ◽  
Author(s):  
Yotaro Morishima ◽  
Tohru Tanaka ◽  
Yoshihiro Itoh ◽  
Shun-ichi Nozakura
Keyword(s):  
Fluorescence Quenching ◽  
Aqueous Media ◽  
Amphiphilic Copolymers

Two new quinoline-based regenerable fluorescent probes with AIE characteristics for selective recognition of Cu2+ in aqueous solution and test strips

The Analyst ◽  
2018 ◽  
Vol 143 (20) ◽  
pp. 4870-4886 ◽  
Author(s):  
Jingwen Xiong ◽  
Zongzhi Li ◽  
Jihua Tan ◽  
Shaomin Ji ◽  
Jianwei Sun ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Fluorescence Quenching ◽  
Fluorescent Probes ◽  
Aqueous Media ◽  
Rapid Analysis ◽  
Selective Recognition ◽  
Quenching Mechanism ◽  
Aggregation Induced Emission ◽  
Test Strips ◽  
Fluorescence Quenching Mechanism

Two novel highly selective quinoline-based fluorescent probes with an aggregation induced emission (AIE) feature are used for rapid analysis of Cu2+ in aqueous media and on paper strips with a fluorescence quenching mechanism.

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