Methyl Ester Functionalized Phenalenyl Arene- and Bipyridine–Ruthenium-Based Complexes for Electroactive Langmuir–Blodgett Films
| Autor: | Ronny R. Ribeiro, Herbert Winnischofer, David L. Hughes, Isis Mani Wahl, Francielli S. Santana, Eduard Westphal, Tiago Leyser da Costa Gouveia, Leonardo Henrique Ribeiro Piccoli |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010405 organic chemistry
Ligand chemistry.chemical_element 010402 general chemistry 01 natural sciences Langmuir–Blodgett film 0104 chemical sciences Ruthenium Inorganic Chemistry chemistry.chemical_compound Bipyridine chemistry Polymer chemistry Polar effect Carboxylate Physical and Theoretical Chemistry |
| Zdroj: | Inorganic Chemistry. 58:8408-8418 |
| ISSN: | 1520-510X 0020-1669 |
| Popis: | We report the synthesis of a new phenalenyl ligand, functionalized with a methyl ester electron withdrawing group, named 9-hydroxy-1-oxo-1H-phenalen-5-methyl carboxylate (L), and the generated complexes [Ru(bpy)2L]PF6 and [(η6-C6H6)Ru(L)Cl]. Compounds were characterized by spectroscopic and X-ray diffraction methods, and their electrochemical behavior was investigated via cyclic voltammetry and UV-vis spectroelectrochemistry. The one-electron oxidized compounds have an unpaired electron located in the phenalenyl ring, as supported by theoretical calculations (DFT) and EPR results. Langmuir-Blodgett (LB) films deposited by [Ru(bpy)2L]2+/3+ species mixed with stearic acid are electroactive, showing a quasi-reversible wave with E1/2Film1 = 0.74 V and E1/2Film2 = 0.81, which are promising systems that allow access to immobilized open-shell species in the film. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|