• Spectroscopy and Spectral Analysis
  • Vol. 41, Issue 10, 3311 (2021)
Moamen S. Refat1、1; *;, Mahmoud Salman2、2;, Akram M. El-Didamony3、3;, Hammad Fetooh3、3;, Eman S.E. Abd El-Maksoud3、3;, and Mohamed Y. El-Sayed3、3; 4;
Author Affiliations
  • 11. Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
  • 22. Department of Chemistry, Faculty of Science, Al-Hussein Bin Talal University, P.O. Box 20 Ma’an, Jordan
  • 33. Department of Chemistry, Faculty of Science, Zagazig University, Egypt
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    DOI: 10.3964/j.issn.1000-0593(2021)10-3311-05 Cite this Article
    Refat Moamen S., Salman Mahmoud, El-Didamony Akram M., Fetooh Hammad, Abd El-Maksoud Eman S.E., El-Sayed Mohamed Y.. Spectroscopic and Fluorescence Studies on the Trivalent Ce, Eu, Nd and La Metal Ions Rhodamine C Florescent Dye Complexes[J]. Spectroscopy and Spectral Analysis, 2021, 41(10): 3311 Copy Citation Text show less

    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.

    Introduction

    Laser dyes are very versatile[1]. Owing to the high fluorescence quantum yield, broad fluorescence in the visible region, and high absorption coefficient of rhodamine dyes, they are widely used as fluorescent probes[2]. Fluorescents are basic for researches in the clinical diagnosis of diseases, the assurance of food safety, environmental quality, the development of new drugs, and in the biological science[3,4].

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    Refat Moamen S., Salman Mahmoud, El-Didamony Akram M., Fetooh Hammad, Abd El-Maksoud Eman S.E., El-Sayed Mohamed Y.. Spectroscopic and Fluorescence Studies on the Trivalent Ce, Eu, Nd and La Metal Ions Rhodamine C Florescent Dye Complexes[J]. Spectroscopy and Spectral Analysis, 2021, 41(10): 3311
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