Luminescence from open-shell, first-row transition metal dipyrrin complexes

Autor:	Shao-Liang Zheng, Austin B. Scharf, Theodore A. Betley
Rok vydání:	2021
Předmět:	Inorganic Chemistry Crystallography Transition metal Chemistry Ligand Metal ions in aqueous solution chemistry.chemical_element Protonation Lithium Zinc Luminescence Phosphorescence
Zdroj:	Dalton Transactions. 50:6418-6422
ISSN:	1477-9234 1477-9226
DOI:	10.1039/d1dt00945a
Popis:	Several first-row transition metal complexes of the 1,9-bis(2',4',6'-triphenylphenyl)-5-mesityl dipyrrinato ligand and its tetrahalogenated analogues have been synthesized and their luminescence spectra obtained. The protonated ligands, as well as the Li(i), Mn(ii), Cu(i), Cu(ii), and Zn(ii) chelates show appreciable luminescence, despite the paramagnetism of the Mn(ii) and Cu(ii) ions. Fluorescence quantum yields (ΦF) as high as 0.67 were observed for the zinc complex. Luminescence was partially quenched by the introduction of heavy halogens to the backbone of the ligand, as well as by the introduction of paramagnetic metal ions. Room-temperature, solution state phosphorescence was observed from the halogenated dipyrrinato lithium salts, as well as from the non-halogenated Mn(ii) complex.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b767e45259036c88e00e0acf8493511d https://doi.org/10.1039/d1dt00945a Zobrazit plný text záznamu