Spectroscopic and Fluorescence Studies on the Trivalent Ce, Eu, Nd and La Metal Ions Rhodamine C Florescent Dye Complexes
Moamen S. Refat1*, Mahmoud Salman2, Akram M. El-Didamony3, Hammad Fetooh3, Eman S.E. Abd El-Maksoud3，Mohamed Y. El-Sayed3,4
1. Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
2. Department of Chemistry, Faculty of Science, Al-Hussein Bin Talal University, P.O. Box 20 Ma’an, Jordan
3. Department of Chemistry, Faculty of Science, Zagazig University, Egypt
4. Chemistry Department, College of Science, Jouf University, P.O. Box: 2014 Sakaka, Saudi Arabia
Spectroscopic and Fluorescence Studies on the Trivalent Ce, Eu, Nd and La Metal Ions Rhodamine C Florescent Dye Complexes
Moamen S. Refat1*, Mahmoud Salman2, Akram M. El-Didamony3, Hammad Fetooh3, Eman S.E. Abd El-Maksoud3，Mohamed Y. El-Sayed3,4
1. Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
2. Department of Chemistry, Faculty of Science, Al-Hussein Bin Talal University, P.O. Box 20 Ma’an, Jordan
3. Department of Chemistry, Faculty of Science, Zagazig University, Egypt
4. Chemistry Department, College of Science, Jouf University, P.O. Box: 2014 Sakaka, Saudi Arabia
摘要： The four isolates solid complexes: [La(RHC)(NO3)2]·3H2O, [Nd(RHC)(NO3)2]·4H2O, [Eu(RHC)(NO3)2]·2H2O, and [Ce(RHC)(NO3)2]·5H2O that obtained by the reaction of the nitrate salts of the Ce(Ⅲ), Eu(Ⅲ), Nd(Ⅲ) and La(Ⅲ) ions and rhodamie C (RHC) ligand were interpretative using elemental analysis (C, H and N), molar conductivity, infrared, electronic, fluorescence and 1H-NMR spectra to achieve the speculated suitable formula. The low molar conductance values of the synthesized RHC complexes concluded the non-electrolytic behavior. The infrared spectra recorded the absence of stretching vibration ν(OH) of the —COOH and presence of two new vibration bands at 1 597～1 601 and 1 383～1 399 cm-1 which were assigned to νas(COO-) and νs(COO-). The difference between them revealed that the carboxylate group acts as a bidentate ligand. 1HNMR spectra of Europium and lanthanum(Ⅲ) complexes were supported the FTIR results based on the absent of proton of the carboxylic group. Therefore, the microanalytical and spectroscopic results deduced that RHC acts as a monobasic bidentate ligand, and coordinated to the central metal(Ⅲ) ions via the two oxygen atoms of deprotonated carboxylic group. Fluorescence studies were performed on the metal complexes of Ce3+, Tb3+, Th4+, Gd3+ and La3+, that referred a quenching in the fluorescene intensity of rhodamine C in the aqueous state after complexation. The antimicrobial assessment against some kind of bacteria and fungi were also checked and recorded enhancement in case of their complexes.
Abstract：The four isolates solid complexes: [La(RHC)(NO3)2]·3H2O, [Nd(RHC)(NO3)2]·4H2O, [Eu(RHC)(NO3)2]·2H2O, and [Ce(RHC)(NO3)2]·5H2O that obtained by the reaction of the nitrate salts of the Ce(Ⅲ), Eu(Ⅲ), Nd(Ⅲ) and La(Ⅲ) ions and rhodamie C (RHC) ligand were interpretative using elemental analysis (C, H and N), molar conductivity, infrared, electronic, fluorescence and 1H-NMR spectra to achieve the speculated suitable formula. The low molar conductance values of the synthesized RHC complexes concluded the non-electrolytic behavior. The infrared spectra recorded the absence of stretching vibration ν(OH) of the —COOH and presence of two new vibration bands at 1 597～1 601 and 1 383～1 399 cm-1 which were assigned to νas(COO-) and νs(COO-). The difference between them revealed that the carboxylate group acts as a bidentate ligand. 1HNMR spectra of Europium and lanthanum(Ⅲ) complexes were supported the FTIR results based on the absent of proton of the carboxylic group. Therefore, the microanalytical and spectroscopic results deduced that RHC acts as a monobasic bidentate ligand, and coordinated to the central metal(Ⅲ) ions via the two oxygen atoms of deprotonated carboxylic group. Fluorescence studies were performed on the metal complexes of Ce3+, Tb3+, Th4+, Gd3+ and La3+, that referred a quenching in the fluorescene intensity of rhodamine C in the aqueous state after complexation. The antimicrobial assessment against some kind of bacteria and fungi were also checked and recorded enhancement in case of their complexes.
基金资助: Taif University Researches Supporting Project number (TURSP-2020/01), Taif University, Taif, Saudi Arabia
通讯作者:
Moamen S. Refat
E-mail: msrefat@yahoo.com; moamen@tu.edu.saIntroduction
引用本文:
Moamen S. Refat, Mahmoud Salman, Akram M. El-Didamony, Hammad Fetooh, Eman S.E. Abd El-Maksoud，Mohamed Y. El-Sayed. Spectroscopic and Fluorescence Studies on the Trivalent Ce, Eu, Nd and La Metal Ions Rhodamine C Florescent Dye Complexes[J]. 光谱学与光谱分析, 2021, 41(10): 3311-3315.
Moamen S. Refat, Mahmoud Salman, Akram M. El-Didamony, Hammad Fetooh, Eman S.E. Abd El-Maksoud，Mohamed Y. El-Sayed. Spectroscopic and Fluorescence Studies on the Trivalent Ce, Eu, Nd and La Metal Ions Rhodamine C Florescent Dye Complexes. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(10): 3311-3315.
[1] Durate F J. High Power Dye Laser, Springer-Verlag, Berlin，1991.
[2] Beija M，Afonso C A M，Matinho J M G. Chem. Soc. Rev., 2009，38：2410.
[3] Valeur B. Developen of Rhodamine Dyes for Biochemical Application. In Molecular Fluorescence: Principle and Applications, Zhang L., et al, Eds.; Wiley-VCH, Weinheim，2002.
[4] Mason W T. Fluorescent and Luminescent Probes for Biological Activity, 2nd ed. Academic Press: San Diego, CA，1999.
[5] Ravi V A. Tetrahedron Let., 1999，40：7611.
[6] Chandran S S，Dickson K A，Raines R T. J. Am. Chem. Soc., 2005，127：1652.
[7] Houghten R A，Dooley C T，Appel J R. Bioorg. Med. Chem. Lett., 2004，14：1947.
[8] Cai S X，Zhang H Z，Guasella J，et al. Bioorg. Med. Chem. Lett., 2001，11：39.
[9] Leytus S P，Melhado L L，Mangel W F. Biochem. J., 1983，209：299.
[10] Demas J N，DeGraff B A. J. Chem. Educ., 1997，74：690.
[11] Lakowicz J R，Terpetsching E，Murtaza Z，et al. J. Fluoesc., 1997，7：17.
[12] Terpetschnig E，Szmacinski H，Laowicz J R. Long-Lifetime Metal-Ligand Complexes as Probes in Biophysics and clinical Chemistry. In Methods in Enzymology, Academic Press: London, 1997，278：295.
[13] Shakhverdov T A，Ergashev R. Opt. Spektros., 1999，87：236.
[14] Qu J Q，Wang L F，Li Y Z，et al. Synth. React. Inorg. Metal-Org. Nano-Met. Chem., 2001，31：1577.
[15] Refat M S，Killa H M A，Mansour A F，et al. J. Chem. Eng. Data, 2011，56：3493.
[16] Abd El-Wahed M G，Refat M S，El-Megharbel S M. J. Mol. Struct., 2008，892：401.
[17] Abd El-Wahed M G，Refat M S，El-Megharbel S M. Spectrochim. Acta A, 2008，70(4)：916.
[18] Nakamoto K. Infrared Spectra of Inorganic and Coordination Compound. John Wiley & Sons, New York，1968.
