Schiff base functionalized PEG as a high efficient fluorescent chemosensor for Al3+ detection in 100% aqueous solution

2019 ◽  
Vol 139 ◽  
pp. 1-8 ◽  
Author(s):  
Liping Bai ◽  
Guang Li ◽  
Leixuan Li ◽  
Mingxue Gao ◽  
Han Li ◽  
...  
2014 ◽  
Vol 6 (11) ◽  
pp. 3560-3563 ◽  
Author(s):  
Kai Wu ◽  
Yuting Gao ◽  
Zhenni Yu ◽  
Fangqi Yu ◽  
Juhua Jiang ◽  
...  

A facile naphthalene-based Schiff base chemosensor, 1-((pyridin-2-ylmethylimino)methyl)naphthalen-2-ol, has been designed and synthesized for selective detection of Zn2+ions.


2010 ◽  
Vol 51 (4) ◽  
pp. 618-621 ◽  
Author(s):  
Lei Li ◽  
Yong-Qiang Dang ◽  
Hong-Wei Li ◽  
Bin Wang ◽  
Yuqing Wu

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 573 ◽  
Author(s):  
Liping Bai ◽  
Yuhang Xu ◽  
Guang Li ◽  
Shuhui Tian ◽  
Leixuan Li ◽  
...  

The development of highly selective and sensitive chemosensors for Al3+ detection in pure aqueous solution is still a significant challenge. In this work, a novel water-soluble polymer PEGBAB based on salicylidene Schiff base has been designed and synthesized as a turn-on fluorescent chemosensor for the detection of Al3+ in 100% aqueous solution. PEGBAB exhibited high sensitivity and selectivity to Al3+ over other competitive metal ions with the detection limit as low as 4.05 × 10−9 M. PEGBAB displayed high selectivity to Al3+ in the pH range of 5–10. The fluorescence response of PEGBAB to Al3+ was reversible in the presence of ethylenediaminetetraacetic acid (EDTA). Based on the fluorescence response, an INHIBIT logic gate was constructed with Al3+ and EDTA as two inputs. Moreover, test strips based on PEGBAB were fabricated facilely for convenient on-site detection of Al3+.


2020 ◽  
Vol 44 (26) ◽  
pp. 11148-11154 ◽  
Author(s):  
Liping Bai ◽  
Yuhang Xu ◽  
Leixuan Li ◽  
Farong Tao ◽  
Shuangshuang Wang ◽  
...  

An efficient reversible fluorescent chemosensor, PEGFB, based on polyethylene glycol bearing a furan Schiff base unit has been successfully developed to sensitively detect Al3+ in pure aqueous solution.


Author(s):  
Xiaofeng Huang ◽  
Qiulin Deng ◽  
Xingzhang Wang ◽  
Hongquan Deng ◽  
Tinghong Zhang ◽  
...  

2021 ◽  
Author(s):  
Zishuai Wei ◽  
Qibin Chen ◽  
Honglai Liu

The removal of aniline from aqueous solution can have a major environmental impact and hence has attracted increasing attention in last years. In this work, four hypercrosslinked polymers (HCPs) bearing...


1965 ◽  
Vol 18 (5) ◽  
pp. 651 ◽  
Author(s):  
RW Green ◽  
PW Alexander

The Schiff base, N-n-butylsalicylideneimine, extracts more than 99.8% beryllium into toluene from dilute aqueous solution. The distribution of beryllium has been studied in the pH range 5-13 and is discussed in terms of the several complex equilibria in aqueous solution. The stability constants of the complexes formed between beryllium and the Schiff base are log β1 11.1 and log β2 20.4, and the distribution coefficient of the bis complex is 550. Over most of the pH range, hydrolysis of the Be2+ ion competes with complex formation and provides a means of measuring the hydrolysis constants. They are for the reactions: Be(H2O)42+ ↔ 2H+ + Be(H2O)2(OH)2, log*β2 - 13.65; Be(H2O)42+ ↔ 3H+ + Be(H2O)(OH)3-, log*β3 -24.11.


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