Inclusion complex formation of ternary system: Fluoroscein-p-sulfonato calix[4]arene-Cu(2+) by cooperative binding.
The aqueous solution of fluorescein-para sulfonato calix[4]arene-metal ion complex has been studied based on absorption, fluorescence, (1)H NMR and FTIR spectroscopic results. It was found that the fluorescence intensity quenched regularly upon addition of pSCX4 and metal ion. The quenching constants and binding constants were determined for pSCX4-FL and pSCX4-FL-Cu(2+) systems. 1:1 stoichiometry is obtained for pSCX4-Cu(2+) system by continuous variation method. The NMR and IR results indicates the interaction among FL, pSCX4 and Cu(2+). The combined results demonstrate the cooperative binding to design the complex for ternary system. The life time for binary and ternary system has been studied.
Department of Applied Chemistry, AISSMS-CoE, Pune, India.
Sharadchandra
S
Gawhale
Department of Chemistry, Savitribai Phule Pune University, Pune, India.
Ankita
A
Jadhav
Department of Chemistry, Savitribai Phule Pune University, Pune, India.
Nilesh
N
Rathod
Department of Chemistry, Savitribai Phule Pune University, Pune, India.
Dipalee
D
Malkhede
Department of Chemistry, Shri. Shivaji Science College, Amravati, India. Electronic address: gnchaudhari@gmail.com.
Gajanan
G
Chaudhari
D047250:Calixarenes / Q000737:chemistry*; D002413:Cations, Divalent / Q000737:chemistry; D056831:Coordination Complexes / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D019793:Fluorescein / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D010636:Phenols / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D017550:Spectroscopy, Fourier Transform Infrared
D002413:Cations, Divalent; D056831:Coordination Complexes; D010636:Phenols; C511968:p-sulfonatocalix(4)arene; D047250:Calixarenes; D003300:Copper; D019793:Fluorescein
Cooperative binding; Fluorescein (FL); Para sulfonato calix[4]arene; Ternary system