Calix[4]arene Based Highly Efficient Fluorescent Sensor for Au(3+) and I(.).
This approach disclose the selective fluorogenic ion sensing ability of 5,11,17,23-tetratertbutyl-25,27-bis((2hydroxynaphthylimino)1,2-ethylenediaminecarbonylmethoxy)-26,28 dihydroxycalix[4]arene (C4NSB). Binding property of receptor probed by using selected various cations and anions with conferring of results that demonstrates 'turn-off' fluorescence response and significantly high chromogenic selectivity toward Au(3+) and I(-). Furthermore, selective nature of receptor was investigated in the presence of different co-existing competing ions. The limit of detection (LOD) for Au(3+) and I(-) was determined as 1.5 × 10(-5) and 4.5 × 10(-6) M respectively. Receptor C4NSB form (1:1) stoichiometric complex with both ions and their binding constants were calculated as 8.0 × 10(2) for Au(3+) and 15.6 × 10(2) M(-1) for I(-). Complexes were also characterized through FT-IR spectroscopy.
National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan. shahabuddinmemon@yahoo.com.
Shahabuddin
S
Memon
National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan.
Ashfaque Ali
AA
Bhatti
National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan.
Asif Ali
AA
Bhatti
Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, Trabzon, 61080, Turkey.
Ümmühan
Ü
Ocak
Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, Trabzon, 61080, Turkey.
Miraç
M
Ocak
D000447:Aldehydes / Q000737:chemistry; D047250:Calixarenes / Q000737:chemistry*; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D005456:Fluorescent Dyes / Q000737:chemistry*; D006046:Gold / Q000032:analysis* / Q000737:chemistry*; D007455:Iodine / Q000032:analysis* / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D009281:Naphthalenes / Q000737:chemistry; D010636:Phenols / Q000737:chemistry*; D012545:Schiff Bases / Q000737:chemistry
C482304:2-hydroxynaphthaldehyde; D000447:Aldehydes; D005456:Fluorescent Dyes; D009281:Naphthalenes; D010636:Phenols; D012545:Schiff Bases; C121325:calix(4)arene; D047250:Calixarenes; D006046:Gold; D007455:Iodine
Calix[4]arene; Complex; FT-IR spectroscopy; Fluorescent; LOD