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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Crystal structure and temperature dependence of the photophysical properties of the [Eu(tta)(3)(pyphen)] complex

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Author(s):
Cabral, F. M. [1] ; Galico, D. A. [1] ; Mazali, I. O. [1] ; Sigoli, F. A. [1]
Total Authors: 4
Affiliation:
[1] Univ Campinas UNICAMP, Inst Chem, Lab Funct Mat, POB 6154, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Inorganic Chemistry Communications; v. 98, p. 29-33, DEC 2018.
Web of Science Citations: 4
Abstract

In this work, we synthesized the [tris(thenoyltrifluoroacetone)pyrazino {[}2,34] {[}1,10]phenanthroline]europium (III) complex and studied its thermal emission quenching. The crystal structure of the {[}Eu(tta)(3)(pyphen)] complex show that the europium (III) ion occupies a distorted D(4)d symmetry of a square antiprism site. The complex shows an absolute emission quantum yield of 43.3 +/- 1.2. The temperature dependence of the photophysical properties of the complex was evaluated and indicates that the complex has potential to be applied as a lifetime based luminescent thermometer. The quenching of the luminescence as a function of temperature occurs due the energy back-transfer from the emitter state to the ligand centered triplet state. The temperature induced blue-shift in the D-5(0) -> F-7(0) transition band indicates the presence of the electron-phonon coupling in this complex. (AU)

FAPESP's process: 14/50906-9 - INCT 2014: in Functional Complex Materials
Grantee:Fernando Galembeck
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 13/22127-2 - Development of novel materials strategic for integrated analytical devices
Grantee:Lauro Tatsuo Kubota
Support Opportunities: Research Projects - Thematic Grants