| Autor: |
Ana M. Cuadro, Obis Castaño, Inge Asselberghs, Juan J. Vaquero, Marco Antonio Ramirez, Koen Clays, Jose L. Andres, Julio Alvarez-Builla, Francisco Mendicuti, Raul Custodio |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Organicbiomolecular chemistry. 11(41) |
| ISSN: |
1477-0539 |
| Popis: |
Charged chromophores based on heteroaromatic cations were prepared by reaction of alkylazinium salts with N-heteroarylstannanes under Stille conditions. This approach provides easy access to potential single donor D-A(+) chromophores in which the acceptor moiety A(+) is the pyridinium cation and the donors are different π-excessive N-heterocycles. The β hyperpolarizabilities were measured in hyper-Rayleigh scattering experiments and the experimental data are supported by a theoretical analysis that combines a variety of computational procedures, including density functional theory and correlated Hartree-Fock-based methods. In some chromophores, the absence of a bridge between donor and acceptor fragments increases the NLO properties. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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