Determination of trace copper(ii) by Triton X-100 sensitized fluorescence quenching of a novel calix[4]arene Schiff base derivative

2014 ◽  
Vol 6 (2) ◽  
pp. 575-580 ◽  
Author(s):  
Qian Yang ◽  
Xiashi Zhu ◽  
Chaoguo Yan ◽  
Jing Sun
2014 ◽  
Vol 2 (37) ◽  
pp. 6306-6312 ◽  
Author(s):  
Fangyuan Gai ◽  
Xiang Li ◽  
Tianlei Zhou ◽  
Xiaogang Zhao ◽  
Dongdong Lu ◽  
...  

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.


2012 ◽  
Vol 33 (4) ◽  
pp. 453-457
Author(s):  
刘保生 LIU Bao-sheng ◽  
闫潇娜 YAN Xiao-na ◽  
种宝红 CHONG Bao-hong ◽  
曹世娜 CAO Shi-na ◽  
吕运开 LV Yun-kai

2019 ◽  
Vol 74 (9) ◽  
pp. 665-670
Author(s):  
Yao Qu ◽  
Yancong Wu ◽  
Cong Wang ◽  
Kun Zhao ◽  
Huilu Wu

AbstractIn order to realize real-time monitoring of Cu2+, a new fluorescent probe HL, a Schiff base derivative of N-n-butyl-4-[2]-1,8-naphthalimide, has been designed and synthesized. In methanol-HEPES [2-(4-(2-hydroxyethyl)-1-piperazinyl)-ethanesulfonic acid] solution (1:1, v/v, pH = 7.4) HL showed excellent selectivity towards Cu2+ over other common coexisting metal ions. The fluorescence intensity for HL showed a good linearity with the concentration of Cu2+ ions in the range of 0.5–5.0 μm. Based on combined fluorescence titration, Job’s plot analysis, and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry results, Cu2+ forms a 1:2 complex with L. The fluorescence intensity of HL exhibits significant quenching after binding with Cu2+, owing to the strong, intrinsic paramagnetic behavior of Cu2+. Ultimately, in order to test the performance of the synthesized probe, HL was preliminarily applied to the determination of Cu2+ in the Yellow River and in tap water with satisfying results.


2004 ◽  
Vol 20 (6) ◽  
pp. 945-949 ◽  
Author(s):  
Chang-Qing ZHU ◽  
Yu-Qin WU ◽  
Hong ZHENG ◽  
Jin-Long CHEN ◽  
Dong-Hui LI ◽  
...  

2013 ◽  
Vol 46 (4) ◽  
pp. 694-705 ◽  
Author(s):  
Xiaoqing Xing ◽  
Yunyou Zhou ◽  
Junyong Sun ◽  
Dongbao Tang ◽  
Tao Li ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document