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http://hdl.handle.net/1843/56876| Tipo: | Artigo de Periódico |
| Título: | Tuning photoluminescent properties of silver(I)-based coordination networks through their supramolecular interactions |
| Autor(es): | Catiúcia Rodrigues Marcelino Oliveira Matos Flávia Garcia Alves Monteiro Fábio da Silva Miranda Carlos Basílio Pinheiro Andrew David Bond Célia Machado Ronconi |
| Resumo: | Eight novel luminescent silver(I)-based coordination networks have been self-assembled from two flexible dicyanomethylene ligands bearing diethylene (L1) and triethylene glycol (L2) spacers and silver salts (AgClO4 or AgBF4) in dichloromethane/toluene or dichloromethane/benzene solvents. Single-crystal X-ray diffraction reveals a variety of geometries around the silver(I) ion, resulting in mono-, bi-, and tetranuclear networks with rare topologies. The coordination networks show two-dimensional architectures through coordination of the cyano and glycolic groups to the silver(I) ions. The three-dimensional supramolecular arrangement is formed through weak π···π and Ag···π interactions as well as hydrogen bonds between water molecules and ClO4– and BF4– counterions. The silver(I)-based coordination networks display green to yellow emissions in the solid state, with quantum yields (Φem) varying from 1.1 to 8.5%. The emission properties are attributed to intraligand charge transfer and metal-perturbed intraligand transitions. Supramolecular interactions, such as Ag···π and π···π interactions, play an important role in the photophysical properties of these compounds. |
| Assunto: | Fotoluminescência Prata |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Instituição: | UFMG |
| Departamento: | ICX - DEPARTAMENTO DE FÍSICA |
| Tipo de Acesso: | Acesso Restrito |
| Identificador DOI: | https://doi.org/10.1021/acs.cgd.7b01082 |
| URI: | http://hdl.handle.net/1843/56876 |
| Data do documento: | 2017 |
| metadata.dc.url.externa: | https://pubs.acs.org/doi/10.1021/acs.cgd.7b01082 |
| metadata.dc.relation.ispartof: | Crystal Growth & Design |
| Aparece nas coleções: | Artigo de Periódico |
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