Synthesis and Characterization of Ln(III) Complexes and its Luminescence Properties

Jashobanta Sahoo; P S Subramanian; Santlal Jaiswar

doi:10.1007/s10895-016-1821-4

Synthesis and Characterization of Ln(III) Complexes and its Luminescence Properties

J Fluoresc. 2016 Jul;26(4):1341-7. doi: 10.1007/s10895-016-1821-4. Epub 2016 May 24.

Authors

Jashobanta Sahoo^{1

2}, P S Subramanian^{3

4}, Santlal Jaiswar⁵

Affiliations

¹ Inorganic Materials and Catalysis Division, Central Salt and Marine Chemicals Research Institute, (CSIR-CSMCRI), Bhavnagar, Gujarat, 364002, India.
² Academy of Scientific and Innovative Research (AcSIR), CSIR-CSMCRI, Bhavnagar, Gujarat, 364 002, India.
³ Inorganic Materials and Catalysis Division, Central Salt and Marine Chemicals Research Institute, (CSIR-CSMCRI), Bhavnagar, Gujarat, 364002, India. siva@csmcri.org.
⁴ Academy of Scientific and Innovative Research (AcSIR), CSIR-CSMCRI, Bhavnagar, Gujarat, 364 002, India. siva@csmcri.org.
⁵ Discipline of Marine Biotechnology and Ecology, CSIR-CSMCRI, Bhavnagar, Gujarat, 364 002, India.

PMID: 27220511
DOI: 10.1007/s10895-016-1821-4

Abstract

Hexadentate ligand L and its Ln(3+) complexes EuLCl3 (1), TbLCl3 (2), SmLCl3 (3) are synthesised. All these complexes are well characterized for their photophysical properties such as luminescence lifetime decay(τ) and overall quantum yield(Φ). These complexes being water soluble, depicts their intense metal centred luminescence. Effect of pH on these complexes suggest that their emission intensities are stable in the pH range 4-9 and show their compatibility to function in the physiological pH. Graphical Abstract Normalized emisson spectra of complex 1, 2 and 3 (1x10(-5)M) in HEPES Buffer at pH 7.4 (λexc=276nm).

Keywords: Lanthanide; Luminescence; Photophysical properties; Synthesis; pH control.