Understanding the excited state dynamics and redox behavior of highly luminescent and electrochemically active Eu(<scp>iii</scp>)–DES complex
Sushil M. Patil, Ruchi Agrawal, Ruma Gupta, Santosh K. Gupta, Ayan Ghosh, Sumit Kumar, Kavitha Jayachandran, Tapan K. Ghanty
Abstract
in the Eu(III)-DES complex. TRPL measurement has also suggested two distinct local environments of europium ions in the complex. DFT calculations supported the EXAFS findings, confirming that the Eu(III)-DES structure involves not only the oxygen atom of decanoic acid but also the oxygen atoms from the nitrate ions, contributing to the local coordination of Eu(III). Electrochemical studies demonstrated that the redox reaction of Eu(III)/Eu(II) in DES displays quasi-reversible behavior. The reaction rate was observed to increase with higher temperatures. The findings of this study can contribute to the understanding of the fundamental properties and potential applications of this luminescent and electrochemically active complex and pave the way for further studies and the development of novel materials with enhanced luminescent and electrochemical properties.