Metadata of CSIR Papers
View Archive Info| Field | Value | |
| Creator |
Patra, S
Boricha, VP Sreenidhi, KR Suresh, E Paul, P |
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| Subject |
Chemistry
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| Description |
Metalloreceptors containing ruthenium(II) bipyridine unit as fluorophore and pendant macrocyclic units as ionophore have been synthesized and their luminescence and electrochemical properties have been investigated. Ion-binding study of these fluoroionophore with the anions F(-), Cl(-), Br(-), I(-), H(2)PO(4)(-), ClO(4)(-), NO(3)(-), BF(4)(-), CH(3)COO(-), and HSO(4)(-) and cations Na(+), K(+), Mg(2+), Ca(2+), Zn(2+), Ba(2+), Sr(2+) Cd(2+), Hg(2+), Pb(2+) and Cu(2+), monitored by luminescence and (1)H NMR spectral changes, reveal strong interactions of H(2)PO(4)(-) and F(-) for 2 and 3 and of Cu(2+) only for 3. Luminescence titrations for 2 and 3 have been carried out to determine binding constants (K(s)), and the calculated values are in the range 2.85 x 10(2) to 4.48 x 10(4) M(-1). The (1)H NMR spectral changes for 2 and 3 with the addition of increasing concentration of F(-) and H(2)PO(4)(-) exhibit substantial low-field shift of the CONH proton indicating its involvement in complex formation with the anions. The H(2)PO(4)(-) adduct of 2 and 3 have been isolated and characterized by (1)H and (31)P NMR, mass and IR spectroscopy. The results are discussed in light of selectivity, structures of the anion bound complexes and their luminescence property. (C) 2010 Elsevier B.V. All rights reserved.
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| Publisher |
ELSEVIER SCIENCE SALAUSANNEPO BOX 564, 1001 LAUSANNE, SWITZERLAND
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| Date |
2011-09-20T12:03:17Z
2011-09-20T12:03:17Z 2010 |
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| Type |
Article
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| Identifier |
INORGANICA CHIMICA ACTA
0020-1693 http://hdl.handle.net/123456789/12260 |
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| Language |
English
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