Premium
Selective Chemosensor of Fe 3+ Based on Fluorescence Quenching by 2,2′‐Bisbenzimidazole Derivative in Aqueous Media
Author(s) -
Wei Taibao,
Liu Jun,
Yao Hong,
Lin Qi,
Xie Yongqiang,
Shi Bingbing,
Zhang Peng,
You Xingmei,
Zhang Youming
Publication year - 2013
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201300019
Subject(s) - chemistry , fluorescence , detection limit , derivative (finance) , aqueous solution , metal ions in aqueous solution , proton nmr , quenching (fluorescence) , photochemistry , selectivity , aqueous medium , ion , analytical chemistry (journal) , organic chemistry , catalysis , chromatography , physics , quantum mechanics , financial economics , economics
2,2′‐Bisbenzimidazole derivative ( L ) was designed as a fluorescent chemosensor for Fe 3+ . This structurally simple chemosensor displays significant fluorescence quenching with increasing concentrations of Fe 3+ . L exhibited high selectivity and antidisturbance for Fe 3+ among environmentally relevant metal ions in aqueous media. The method of Job's plot indicated the formation of 1:2 complex between L and Fe 3+ , and the possible binding mode of the system was also proposed. In addition, further study demonstrates the detection limit on fluorescence response of the sensor to Fe 3+ is down to 10 −7 mol·L −1 range. The binding mode was investigated by fluorescence spectra, ESI‐MS, IR data, 1 H NMR, 13 C NMR and crystal data.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom