The Role of π-f Orbital Interactions in Eu(III) Complexes for an Effective Molecular Luminescent Thermometer

Inorganic Chemistry
Yuichi KitagawaYasuchika Hasegawa

Abstract

Luminescent Eu(III) complexes with a ligand-to-metal charge transfer (LMCT) state were demonstrated for the development of a molecular thermometer. The Eu(III) complex was composed of three anionic ligands (hfa: hexafluoroacetylacetonate) and a phosphine oxide derivative containing a chrysene framework (diphenylphosphorylchrysene (DPCO)). The chrysene framework induced a rigid coordination structure via intermolecular interactions, resulting in a high thermal stability (decomposition point: 280 °C). The Eu(III) complex also exhibited an extremely high molar absorption coefficient (490000 cm-1 M-1), high intrinsic emission quantum yields (73%), and temperature-dependent energy migration between ligands and Eu(III) ion. The characteristic energy migration system was explained by the presence of the LMCT state based on π-f orbital interactions.

References

Jan 20, 2005·Chemistry : a European Journal·David CasanovaSantiago Alvarez
Feb 17, 2006·The Journal of Physical Chemistry. a·Wagner M FaustinoGilberto F de Sá
Mar 28, 2009·Accounts of Chemical Research·Evan G MooreKenneth N Raymond
Jan 6, 2011·Chemistry : a European Journal·Kohei MiyataYasuchika Hasegawa
Jun 21, 2012·Chemical Communications : Chem Comm·Mouchumi Bhuyan, Burkhard Koenig
Jun 25, 2013·Chemical Society Reviews·Xu-dong WangRobert J Meier
Feb 26, 2015·Chemical Communications : Chem Comm·Yuanjing CuiGuodong Qian
Mar 25, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Minxian TangLimin Fu
Jul 30, 2015·Organic & Biomolecular Chemistry·Stephen R D GeorgeJason B Harper
Oct 8, 2015·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Haiying ZhouMikhail Y Berezin
Apr 15, 2016·Scientific Reports·Ayako NakajimaYasuchika Hasegawa
Aug 3, 2016·Chemistry : a European Journal·João RochaLuís D Carlos
May 4, 2017·Chemical Society Reviews·William P LustigSujit K Ghosh
Dec 6, 2017·Chemistry : a European Journal·Kei YanagisawaYasuchika Hasegawa
May 18, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Yuichi KitagawaYasuchika Hasegawa
Oct 17, 2018·Chemistry : a European Journal·Masanori YamamotoYasuchika Hasegawa

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cell Migration

Cell migration is involved in a variety of physiological and pathological processes such as embryonic development, cancer metastasis, blood vessel formation and remoulding, tissue regeneration, immune surveillance and inflammation. Here is the latest research.