Skip to content
BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access August 11, 2008

Novel pH responsive luminescent poly(oxyethylene phosphate) tris(β-diketonate) europium (III) complexes

Stanislav Stanimirov and Ivan Petkov
From the journal Open Chemistry

Abstract

The paper reports on the dependence of the absorbance and luminescent intensity from pH of novel poly(oxyethylene phosphate) tris(β-diketonate) europium (III) complexes. The photophysical data obtained allow some preliminary assumptions about the nature of this phenomenon. Increase in luminescent efficiency is a consequence of enhanced efficiency of energy transfer caused by structural changes in complexes after water deprotonation. Remarkable change has been observed in photophysical properties of the polymer complexes by studying the fluorescent emission and excitation spectra and absorption recorded at various pH both in solution and in the solid state. Some of the complexes derivative of the dibenzoylmethane (DBM) show more than hundred times increase in the luminescence after alkalization. The pH value, at which the maximum luminescent efficiency appears, depends on the type of the fourth ligand. The difference between luminescent efficiency of the complexes in alkaline and neutral environment depends on the β-diketonate ligands and on polymer type as well.

[1] B. Timmer, W. Olthuis, A. van der Berg, Sensors and Actuators B 107, 666 (2005), DOI:10.1016/j.snb.2004.11.054 http://dx.doi.org/10.1016/j.snb.2004.11.05410.1016/j.snb.2004.11.054Search in Google Scholar

[2] T. Gunnlaugsson, Tetrahedron Letters 42, 8901 (2001), DOI:10.1016/S0040-4039(01)01935-9 http://dx.doi.org/10.1016/S0040-4039(01)01935-910.1016/S0040-4039(01)01935-9Search in Google Scholar

[3] T. Gunnlaugsson, J. P. Leonard, K. Senechal, A. J. Harte, J. Am. Chem. Soc. 125, 12062 (2003), DOI: 10.1021/ja035425a http://dx.doi.org/10.1021/ja035425a10.1021/ja035425aSearch in Google Scholar

[4] J. P. Leonard, C. M. G. dos Santos, S. E. Plush, T. McCabe, T. Gunnlaugsson, Chem. Commun. 129, 129 (2007), DOI: 10.1039/b611487c http://dx.doi.org/10.1039/b611487c10.1039/B611487CSearch in Google Scholar

[5] C. P. Mccoy, F. Stomeo, S. E. Plush, T. Gunnlaugsson, Chem. Mater. 18, 4336 (2006), DOI: 10.1021/cm060603v http://dx.doi.org/10.1021/cm060603v10.1021/cm060603vSearch in Google Scholar

[6] D. Parker, Coordin. Chem. Rev. 205, 109 (2000), DOI: 10.1016/S0010-8545(00)00241-1 http://dx.doi.org/10.1016/S0010-8545(00)00241-110.1016/S0010-8545(00)00241-1Search in Google Scholar

[7] R. Pal, D. Parker, Org.Biomol.Chem. 6, 1020 (2008), DOI: 10.1039/b718993a http://dx.doi.org/10.1039/b718993a10.1039/b718993aSearch in Google Scholar

[8] J. P. Leonard, T. Gunnlaugsson, Journal of Fluorescence 15 (4), 585 (2005), DOI: 10.1007/s10895-005-2831-9 http://dx.doi.org/10.1007/s10895-005-2831-910.1007/s10895-005-2831-9Search in Google Scholar

[9] D. Parker, P. K. Senanayake J. A. G. Williams, J. Chem. Soc., Perkin Trans. 2, 2129 (1998), DOI: 10.1039/a801270i 10.1039/a801270iSearch in Google Scholar

[10] Na Shao, J. Jin, G. Wang, Y. Zhang, R. Yang, J. Yuan, Chem. Commun., 1127 (2008), DOI: 10.1039/b715719c 10.1039/b715719cSearch in Google Scholar

[11] S. Blair, M. P. Lowe, C. E. Mathieu, D. Parker, P. K. Senanayake, R. Kataky, Inorg. Chem. 40, 5860(2001), DOI: 10.1021/ic010371w http://dx.doi.org/10.1021/ic010371w10.1021/ic010371wSearch in Google Scholar

[12] S. Salama, F. S. Richardson, J. Phys. Chem., 84, 512 (1980) http://dx.doi.org/10.1021/j100442a01210.1021/j100442a012Search in Google Scholar

[13] J. L. Kropp, M. W. Windsor, J. Chem. Phys., 39, 2769 (1969) http://dx.doi.org/10.1063/1.173409610.1063/1.1734096Search in Google Scholar

[14] A. Beeby, I. M. Clarkson, R. S. Dickins, S. Faulkner, D. Parker, L. Royle, A. S. de Sousa, J. A. G. Williams, M. Woods, J. Chem.Soc., Perkin Trans. 2, 493 (1999), DOI: 10.1039/a808692c 10.1039/a808692cSearch in Google Scholar

[15] Chun-Man Chan, Chun-Sing Fung, Kwok-Yin Wong, W. Lo, Analyst, 123, 1843 (1998), DOI: 10.1039/a802460j http://dx.doi.org/10.1039/a802460j10.1039/a802460jSearch in Google Scholar

[16] M. H. W. Lam, D. Y. K. Lee, K. W. Man, C. S. W. Lau, J. Mater. Chem., 10, 1825 (2000), DOI: 10.1039/b001914n http://dx.doi.org/10.1039/b001914n10.1039/b001914nSearch in Google Scholar

[17] K. Kossev, A. Vassilev, Y. Popova, I. Ivanov, K. Troev, Polymer 44 (2), 1987 (2003), doi:10.1016/S0032-3861(03)00081-8 http://dx.doi.org/10.1016/S0032-3861(03)00081-810.1016/S0032-3861(03)00081-8Search in Google Scholar

[18] J. Barnes, P. Holt, Makromol. Chem. 176, 275 (1975), DOI: 10.1002/macp.1975.021760203 http://dx.doi.org/10.1002/macp.1975.02176020310.1002/macp.1975.021760203Search in Google Scholar

[19] R. Tsevi, P. Novakov, K. Troev, D. M. Roundhill, Journal of Polymer Science: Part A: Polymer Chemistry 35, 625 (1997) http://dx.doi.org/10.1002/(SICI)1099-0518(199703)35:4<625::AID-POLA4>3.0.CO;2-O10.1002/(SICI)1099-0518(199703)35:4<625::AID-POLA4>3.0.CO;2-OSearch in Google Scholar

[20] J. Pretula, S. Penzek, Makromol. Chem. 191, 671 (1990), DOI: 10.1002/macp.1990.021910322 http://dx.doi.org/10.1002/macp.1990.02191032210.1002/macp.1990.021910322Search in Google Scholar

[21] R. Tsevi, G. Todorova, K. Kossev, K. Troev, D. M. Roundhill, Makromol. Chem. 194, 3261 (1993) http://dx.doi.org/10.1002/macp.1993.02194120510.1002/macp.1993.021941205Search in Google Scholar

[22] R. Georgieva, R. Tsevi, K. Kossev, R. Kusheva, M. Balgjiska, R. Petrova, V. Tenchova, I. Gitsov, K. Troev, J. Med. Chem. 45, 5797 (2002), DOI: 10.1021/jm020309o http://dx.doi.org/10.1021/jm020309o10.1021/jm020309oSearch in Google Scholar

[23] S. Stanimirov, A. Vasilev, E.T.K. Haupt, I. Petkov, T. Deligeorgiev, J. Fluorescence. In Press, DOI: 10.1007/s10895-008-0384-4 10.1007/s10895-008-0384-4Search in Google Scholar

[24] M. P. Lowe, D Parker, Inorg. Chem. Acta 317, 163 (2001), DOI: 10.1016/S0020-1693(01)00346-2 http://dx.doi.org/10.1016/S0020-1693(01)00346-210.1016/S0020-1693(01)00346-2Search in Google Scholar

[25] M. Woods, A. D. Sherry, Inorg. Chem. 42, 4401 (2003), DOI: 10.1021/ic0300823 http://dx.doi.org/10.1021/ic030082310.1021/ic0300823Search in Google Scholar

[26] Y. Hasegawa, E. Ishiwata, T. Ohnishi, G. R. Choppin, Anal. Chem. 71, 5060 (1999), DOI: 10.1021/ac990485d http://dx.doi.org/10.1021/ac990485d10.1021/ac990485dSearch in Google Scholar

[27] I. Mamedov, A. Mishra, G. Angelovski, H. A. Mayer, Lars-Olof Pålsson, D. Parker, N. K. Logothetis, Dalton Trans., 5260 (2007), DOI: 10.1039/b711351j 10.1039/b711351jSearch in Google Scholar

Published Online: 2008-8-11
Published in Print: 2008-9-1

© 2008 Versita Warsaw

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Scroll Up Arrow