UPSI Digital Repository (UDRep)
|
UPSI Digital Repository (UDRep)
|
|
|
| ||||||||||||||||
| Abstract : |
| This paper describes the results from ultraviolet (UV) spectroscopic studies of diamide ligands namely N,N’-2,6- bis(3-pyridylmethyl)pyridine dicarboxamide (L5) and N,N’-2,6-bis(4-pyridylmethyl)pyridine dicarboxamide (L6) towards chloride, nitrate and chromate anions in solution. The responses of the ligands towards anions are monitored by the changes of the absorbance in the UV spectra. The time interval experiments were conducted from 0 to 3 hours, resulted to the rise of the absorbance of the ligands. The change in the absorbance value is attributed to the increase of interaction between the ligands and anions that is proportional with time. In contrast to the ligands, the absorbance of anion is decreased showing the reduction of anion concentration in the solution. Rapid UV response indicates the sensitivity of these ligands towards anions which at the same time showing promising potential as sensitive anion sensor. |
| References |
1. Gale, P. A. (2000). Anion coordination and anion-directed assembly: highlights from 1997 and 1998. Coordination Chemistry Reviews. 199, 181-233. 2. Dong, Z.Y., Yang, Y., Zhang, L. F., Xue, Y.R., Feng, M. Y. & Gao, G. H. (2012). Ionic liquids containing the urea moiety for recognition of halides and complex anions. Chinese Science Bulletin. 57 (5), 473-478. 3. Ranjan, D. and Pradyut, G. (2014). Recent developments in anion induced capsular self-assemblies. Chem. Commun. 50, 10538-10554. 4. Cametti, M. and Rissanen, K. (2009). Recognition and sensing of fluoride. Chem Commun. 2809-2829. 5. Cametti, M. andRissanen, K. (2013). Highlights on contemporary recognition and sensing of fluoride anion in solution and in the solid state.Chem Soc. Rev.42, 2016-2038. 6. Gale, P.A., Sessler, J. L., Kral, V., Lynch,V. (1996). Calix[4]pyrroles: Old yet new anion binding agents.”J. Am. Chem. Soc.118, 5140-5141. 7. James, A. S. and Scott, G. W. (2006). Calix[4]pyrrole: Synthesis and anion-binding properties. An organic chemistry laboratory experiment. J. Chem. Educ.83 (9), 1330-1332. 8. Kai, C. C., Shih, S. S., Maurie, O. O., Alistair, J. L. (2015).Anion recognition and sensing by transition-metal complexes with polarized N-H recognition motifs. Coordination Chemistry Reviews.284, 111-123. 9. Qian, Y.C., Yuan M.H., Pei, S.Y., Wen, F.F., Yu, X., Jing, H. L. (2014). A new ferrocene–anthracene dye bearing amide and triazolium donors for dual-signaling sensing to anions. Tetrahedron Letters. 55, 248-251. 10. Ghosh, K., Sarkar, A. R., & Masanta, G.(2007). An anthracene based bispyridinium amide receptor for selective sensing of anions. Tetrahedron Letters. 48: 8725-8729. 11. Sumby, C.J.And Hanton, L. R. (2009). Syntheses and studies of flexible amide ligands: a toolkit for studying metallo-supramolecular assemblies for anion binding. Tetrahedron. 65, 4681-4691. 12. Shi, P.F., Zhao, B., Xiong, G., Hou, Y.L., Cheng, P. (2012). Fast capture and separation of, and luminescent probe for, pollutant chromate using a multi-functional cationic heterometal-organic framework. Chem. Commun. 48: 8231-8233. 13. Kondo, S., Nagamine, M., Karasawa, S., Ishihara, M., Unno, M. (2011). Anion recognition by 2,20- binaphthalene derivatives bearing urea and thiourea groups at 8- and 80-positions by UV-vis and fluorescence spectroscopies. Tetrahedron. 67, 943-950. 14. Harakuwe, A.H., Haddad, P. R., Thomas, R. (1999). The effect of butan-1-ol on the separation of inorganic anions using capillary zone electrophoresis with reversed electroosmotic flow. Journal of Liquid Chromatography & Related Technologies. 22 (5), 659-667. 15. Bala, R., Kashyap, M., Kaur, A.,Golobič, A. (2013). A hexaureachromium(III) complex as a molecular receptor for oxoanions. Journal of Molecular Structure.1031, 246-253. |
| This material may be protected under Copyright Act which governs the making of photocopies or reproductions of copyrighted materials. You may use the digitized material for private study, scholarship, or research. |