A new half-condensed Schiff base platform: structures and sensing of Zn2+ and H2PO4− ions in an aqueous medium

2020 ◽  
Vol 49 (26) ◽  
pp. 8991-9001 ◽  
Author(s):  
Sujaya Chakraborty ◽  
Somenath Lohar ◽  
Koushik Dhara ◽  
Raktim Ghosh ◽  
Somasri Dam ◽  
...  

A new structurally characterised half-condensed Schiff base (HL′) and a Zn2L4 complex reacting from Zn2+ ion and HL produced from HL′ in a solution state as smart chemosensors for Zn2+ and H2PO4− ions respectively in aqueous medium.

2017 ◽  
Vol 46 (29) ◽  
pp. 9498-9510 ◽  
Author(s):  
Barnali Naskar ◽  
Ritwik Modak ◽  
Dilip K. Maiti ◽  
Michael G. B. Drew ◽  
Antonio Bauzá ◽  
...  

A Schiff base platform was explored to present structural aspects of its Zn(ii) and Cd(ii) coordination compounds, sensing behavior towards Zn(ii) and PPi in aqueous medium and anticancer activity.


2019 ◽  
Vol 131 (8) ◽  
Author(s):  
Rajasekaran Dhivya ◽  
Asaithambi Gomathi ◽  
Periasamy Viswanathamurthi

2020 ◽  
Author(s):  
Lifeng Hao ◽  
Cao Feng ◽  
Hua Jiahui ◽  
Wang Jianqiang ◽  
Wang Cheng ◽  
...  

2017 ◽  
Vol 72 (1) ◽  
pp. 35-41 ◽  
Author(s):  
Yuling Xu ◽  
Stephen Opeyemi Aderinto ◽  
Huilu Wu ◽  
Hongping Peng ◽  
Han Zhang ◽  
...  

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.


2005 ◽  
Vol 46 (42) ◽  
pp. 7169-7173 ◽  
Author(s):  
Xiang-Shan Wang ◽  
Mei-Mei Zhang ◽  
Zhao-Sen Zeng ◽  
Da-Qing Shi ◽  
Shu-Jiang Tu ◽  
...  

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